Jiglu: BMW '02 Owners: Discussion: help with Tii calipers needed

spent a couple of hours tonight trying to remove a bleed nipple from n/s caliper

flats were rounded off,mole grips didnt grip,tried mig welding a piece of rod onto nipple-that didnt work,cut a slot in the end only for one side to break off .Drilled hole bigger to use eazy out -nipple broke off flush,drilled hole a bit bigger and eazy out still wouldnt budge it

has anyone got any fixes such as tapping the hole bigger and using a different bleed nipple (obvious problem of getting it to seat on taper)? or is it I assume scrap?

the o/s caliper has all 3 bleed nipples seized although I havent tried mole grips yet presumably the same thing will happen with them

Has anyone got a pair of calipers for sale at a reasonable price or preferably a pair of E12 calipers and E21 323i front hubs ?

I know E23 7 series calipers also fit (with a single line system). What about the later 5 and 7 series calipers ?

David

Send the caliper off to past parts. It's bloody hard to get a nipple out once it's broken off. You have to use oxy/accetelyne heat on the caliper and a single hex 7mm ring spanner (or single hex 7mm socket) and gently move it back and forth using penetrating oil until you can easily unscrew the nipple.

Date: Mon, 13 Aug 2007 22:47:26 +0100
From: ...
To: ...
Subject: [bmw02] help with Tii calipers needed

spent a couple of hours tonight trying to remove a bleed nipple from n/s caliper
flats were rounded off,mole grips didnt grip,tried mig welding a piece of rod onto nipple-that didnt work,cut a slot in the end only for one side to break off .Drilled hole bigger to use eazy out -nipple broke off flush,drilled hole a bit bigger and eazy out still wouldnt budge it
has anyone got any fixes such as tapping the hole bigger and using a different bleed nipple (obvious problem of getting it to seat on taper)? or is it I assume scrap?
the o/s caliper has all 3 bleed nipples seized although I havent tried mole grips yet presumably the same thing will happen with them
Has anyone got a pair of calipers for sale at a reasonable price or preferably a pair of E12 calipers and E21 323i front hubs ?
I know E23 7 series calipers also fit (with a single line system). What about the later 5 and 7 series calipers ?
David
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Hi John

Just picked up a pair of 6 series calipers from a W reg ( I think they used the same floorpan and suspension as the E12?). They fit the tii struts anyway and yes all the nipples are free -I checked they would loosen before I removed the calipers from the car.

It started pouring with rain so I didn't get around to lifting the bonnet. Is the servo system the same as an E12? If so I will go and get the master cylinder

Thought I could get some E21 hubs when I spied a Baur convertible but it was one with M10 engine and solid discs,cyl head was very clean inside and out.

New brake pipes and lines have arrived from W & N aswell today so just need E21 hubs and a pair of vented discs and time to put it together

David

Hi David,

When/if you have another look at those E12 servos can you find out if they are the same as the 2002tii servos. What need info on is the internal bore size. The E12 MC has a 22.2mm bore while the 2002tii has a smaller bore ID. I'd like to know if you use a E12 MC do you need to use the E12 servos as well or can you refurb the 2002tii servos as they are all the same.

I'd be interested in the Servos if they are in good condition...

Regards

Divyesh

e12 servos are bigger.

From: "Jansari, Divyesh" <...>
Reply-To: <...>

Date: 15 Aug 2007 14:49:13 +0100
To: <...>
Subject: RE: [bmw02] help with Tii calipers needed

Hi David,
When/if you have another look at those E12 servos can you find out if they are the same as the 2002tii servos. What need info on is the internal bore size. The E12 MC has a 22.2mm bore while the 2002tii has a smaller bore ID. I'd like to know if you use a E12 MC do you need to use the E12 servos as well or can you refurb the 2002tii servos as they are all the same.
I'd be interested in the Servos if they are in good condition <http://bmw02.jiglu.com/discussion/tags/good-condition> ...
Regards
Divyesh

From: David Bennett [mailto:...]
Sent: 15 August 2007 14:32
To: ...
Subject: Re: [bmw02] help with Tii calipers needed

Hi John
Just picked up a pair of 6 series calipers from a W reg ( I think they used the same floorpan and suspension as the E12?). They fit the tii struts anyway and yes all the nipples are free -I checked they would loosen before I removed the calipers from the car.
  It started pouring with rain so I didn't get around to lifting the bonnet. Is the servo system the same as an E12? If so I will go and get the master cylinder
    Thought I could get some E21 hubs when I spied a Baur convertible but it was one with M10 engine and solid discs,cyl head was very clean inside and out.
    New brake pipes and lines have arrived from W & N aswell today <http://bmw02.jiglu.com/discussion/events/20070815> so just need E21 hubs and a pair of vented discs and time to put it together

David
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Hi Divyesh

Yes you can use both the e12 master cylinder and servos. I have been told the master cylinder works well on a 2002 but the srvos makes the brakes like a switch either on or off !

Regards

James
Sent using BlackBerry® from Orange

-----Original Message-----
From: "Jansari, Divyesh" <...>
Date: 15 Aug 2007 14:49:13
To:<...>
Subject: RE: [bmw02] help with Tii calipers needed

Hi David,
When/if you have another look at those E12 servos can you find out if they are the same as the 2002tii servos. What need info on is the internal bore size. The E12 MC has a 22.2mm bore while the 2002tii has a smaller bore ID. I'd like to know if you use a E12 MC do you need to use the E12 servos as well or can you refurb the 2002tii servos as they are all the same. I'd be interested in the Servos if they are in good condition <http://bmw02.jiglu.com/discussion/tags/good-condition> ... Regards
Divyesh
From: David Bennett [...]
Sent: 15 August 2007 14:32
To: ...
Subject: Re: [bmw02] help with Tii calipers needed

Hi John
Just picked up a pair of 6 series calipers from a W reg ( I think they used the same floorpan and suspension as the E12?). They fit the tii struts anyway and yes all the nipples are free -I checked they would loosen before I removed the calipers from the car.   It started pouring with rain so I didn't get around to lifting the bonnet. Is the servo system the same as an E12? If so I will go and get the master cylinder
    Thought I could get some E21 hubs when I spied a Baur convertible but it was one with M10 engine and solid discs,cyl head was very clean inside and out.
    New brake pipes and lines have arrived from W & N aswell today <http://bmw02.jiglu.com/discussion/events/20070815> so just need E21 hubs and a pair of vented discs and time to put it together

David
www.jiglu.com <http://www.jiglu.com> – making communities, smarter
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Whats the bore size of the e12 servos? and can the 02tii servos be bored out to the same size. Nick, I think you are using the e12 servos with an e12 MC in your M2. I have the Massive brake set up front and rear with an E12 MC. I'm thinking of a single servo set up.

divyesh

From: Nick Vyse [mailto:...]
Sent: 15 August 2007 15:05
To: ...
Subject: Re: [bmw02] help with Tii calipers needed

e12 servos are bigger.

From: "Jansari, Divyesh" <...>
Reply-To: <...>
Date: 15 Aug 2007 14:49:13 +0100
To: <...>
Subject: RE: [bmw02] help with Tii calipers needed

Hi David,
When/if you have another look at those E12 servos can you find out if they are the same as the 2002tii servos. What need info on is the internal bore size. The E12 MC has a 22.2mm bore while the 2002tii has a smaller bore ID. I'd like to know if you use a E12 MC do you need to use the E12 servos as well or can you refurb the 2002tii servos as they are all the same.
I'd be interested in the Servos if they are in good condition <http://bmw02.jiglu.com/discussion/tags/good-condition> ...
Regards
Divyesh

From: David Bennett [mailto:...]
Sent: 15 August 2007 14:32
To: ...
Subject: Re: [bmw02] help with Tii calipers needed

Hi John
Just picked up a pair of 6 series calipers from a W reg ( I think they used the same floorpan and suspension as the E12?). They fit the tii struts anyway and yes all the nipples are free -I checked they would loosen before I removed the calipers from the car.
  It started pouring with rain so I didn't get around to lifting the bonnet. Is the servo system the same as an E12? If so I will go and get the master cylinder
    Thought I could get some E21 hubs when I spied a Baur convertible but it was one with M10 engine and solid discs,cyl head was very clean inside and out.
    New brake pipes and lines have arrived from W & N aswell today <http://bmw02.jiglu.com/discussion/events/20070815> so just need E21 hubs and a pair of vented discs and time to put it together

David
www.jiglu.com <http://www.jiglu.com> – making communities, smarter

This message has been scanned for viruses by MailControl <http://bluepages.wsatkins.co.uk/?6875772>

This email and any attached files are confidential and copyright protected. If you are not the addressee, any dissemination of this communication is strictly prohibited. Unless otherwise expressly agreed in writing, nothing stated in this communication shall be legally binding.

The ultimate parent company of the Atkins Group is WS Atkins plc. Registered in England No. 1885586. Registered Office Woodcote Grove, Ashley Road, Epsom, Surrey KT18 5BW.

www.jiglu.com <http://www.jiglu.com> – making communities, smarter

This email and any attached files are confidential and copyright protected. If you are not the addressee, any dissemination of this communication is strictly prohibited. Unless otherwise expressly agreed in writing, nothing stated in this communication shall be legally binding.

The ultimate parent company of the Atkins Group is WS Atkins plc. Registered in England No. 1885586. Registered Office Woodcote Grove, Ashley Road, Epsom, Surrey KT18 5BW.

I use e12 MC and servos with the 5 series 4 piston calipers upfront (which I don’t think are any bigger than Tii, just wider to accept a vented disk) and Ireland Engineering rear disk brake conversion. True, it’s a lot of servo assistance, but it modulates extremely well and stops extremely well, although I’m going to change to a single line system and try using just one of the servo in the future.

From: "..." <...>
Reply-To: <...>

My thinking is the same Nick. Twin servos with the Four pot willwood calipers all round is going to equal to much braking. I'm looking at a single servo system. Have you looked into the brake line configuration to achieve a single servo set-up?

Divyesh

Same as 1600-2 and others

From: "Jansari, Divyesh" <...>
Reply-To: <...>

Hi,
The situation with the servos is that the E12 servos have a different ratio of assistance to the 2002 (the servo is also slightly larger). Only a few internal parts are interchangable and I would recommend that you stay with the 02 servos and get them refurbed as required.
If you want a single line system, you can use E23 7 series front calipers.
The type of brake pad that you use will also affect brake feel etc.
Use the E12 master cyl. The 02 is 19mm dia.
Some people do without the servo if they have fitted the larger master cyl.
I have been using the E12 calipers,02 servo and the E12 master cyl and I can just about out brake a standard E30 M3. Like Nick states, the car stops esp when the servos are working properly.

Date: Wed, 15 Aug 2007 14:31:56 +0100
From: ...
To: ...
Subject: Re: [bmw02] help with Tii calipers needed

Hi John
Just picked up a pair of 6 series calipers from a W reg ( I think they used the same floorpan and suspension as the E12?). They fit the tii struts anyway and yes all the nipples are free -I checked they would loosen before I removed the calipers from the car.
  It started pouring with rain so I didn't get around to lifting the bonnet. Is the servo system the same as an E12? If so I will go and get the master cylinder
    Thought I could get some E21 hubs when I spied a Baur convertible but it was one with M10 engine and solid discs,cyl head was very clean inside and out.
    New brake pipes and lines have arrived from W & N aswell today so just need E21 hubs and a pair of vented discs and time to put it together

David
www.jiglu.com – making communities, smarter

Discover the new Windows Vista Learn more!

Anyone refurbing a pair of servos at past parts bury st eds get intouch with me as I can get a few quid off what they charge which is 150 per servo if I remember correctly Also the original servos for an 02 came in two different bore sizes. I think the piston bore according to past parts. You can't tell untill you take them apart. Don't really know what it all means in the big scheme of things but that's my pennyworth Best paul hill

Sent via BlackBerry

-----Original Message-----
From: John Hudson <...>
Date: 15 Aug 2007 18:18:35
To:<...>
Subject: RE: [bmw02] help with Tii calipers needed


Hi,
The situation with the servos is that the E12 servos have a different ratio of assistance to the 2002 (the servo is also slightly larger). Only a few internal parts are interchangable and I would recommend that you stay with the 02 servos and get them refurbed as required. If you want a single line system, you can use E23 7 series front calipers. The type of brake pad that you use will also affect brake feel etc.
Use the E12 master cyl. The 02 is 19mm dia.
Some people do without the servo if they have fitted the larger master cyl. I have been using the E12 calipers,02 servo and the E12 master cyl and I can just about out brake a standard E30 M3. Like Nick states, the car stops esp when the servos are working properly.
Date: Wed, 15 Aug 2007 14:31:56 +0100
From: ...
To: ...
Subject: Re: [bmw02] help with Tii calipers needed

Hi John
Just picked up a pair of 6 series calipers from a W reg ( I think they used the same floorpan and suspension as the E12?). They fit the tii struts anyway and yes all the nipples are free -I checked they would loosen before I removed the calipers from the car.   It started pouring with rain so I didn't get around to lifting the bonnet. Is the servo system the same as an E12? If so I will go and get the master cylinder
    Thought I could get some E21 hubs when I spied a Baur convertible but it was one with M10 engine and solid discs,cyl head was very clean inside and out.
    New brake pipes and lines have arrived from W & N aswell today: <http://bmw02.jiglu.com/discussion/events/20070815> so just need E21 hubs and a pair of vented discs and time to put it together

David
www.jiglu.com: <http://www.jiglu.com/> – making communities, smarter
Discover the new Windows Vista Learn more!: <http://search.msn.com/results.aspx?q=windows+vista&mkt=en-US&form=QBRE>

www.jiglu.com: <http://www.jiglu.com> – making communities, smarter

The confusion with the servos arises from the fact that they would have been changed at least once or twice in a car's life. People may have replaced them with other servos that have come off other model BMs thinking that they were the same. The E3 and E9 cars had different bore sizes to 02's and this is in the part of the servo which is indirectly connected to the smaller diaphram at the bottom of trhe servo.
Hence, it's important to replace/repair these in pairs ensuring that they are matched.

Date: Wed, 15 Aug 2007 18:34:19 +0100
From: ...
To: ...
Subject: Re: [bmw02] help with Tii calipers needed

Anyone refurbing a pair of servos at past parts bury st eds get intouch with me as I can get a few quid off what they charge which is 150 per servo if I remember correctly Also the original servos for an 02 came in two different bore sizes. I think the piston bore according to past parts. You can't tell untill you take them apart. Don't really know what it all means in the big scheme of things but that's my pennyworth Best paul hill
Sent via BlackBerry
-----Original Message-----
From: John Hudson <...>
Date: 15 Aug 2007 18:18:35
To:<...>
Subject: RE: [bmw02] help with Tii calipers needed


Hi,
The situation with the servos is that the E12 servos have a different ratio of assistance to the 2002 (the servo is also slightly larger). Only a few internal parts are interchangable and I would recommend that you stay with the 02 servos and get them refurbed as required. If you want a single line system, you can use E23 7 series front calipers. The type of brake pad that you use will also affect brake feel etc.
Use the E12 master cyl. The 02 is 19mm dia.
Some people do without the servo if they have fitted the larger master cyl. I have been using the E12 calipers,02 servo and the E12 master cyl and I can just about out brake a standard E30 M3. Like Nick states, the car stops esp when the servos are working properly.
Date: Wed, 15 Aug 2007 14:31:56 +0100
From: ...
To: ...
Subject: Re: [bmw02] help with Tii calipers needed

Hi John
Just picked up a pair of 6 series calipers from a W reg ( I think they used the same floorpan and suspension as the E12?). They fit the tii struts anyway and yes all the nipples are free -I checked they would loosen before I removed the calipers from the car.   It started pouring with rain so I didn't get around to lifting the bonnet. Is the servo system the same as an E12? If so I will go and get the master cylinder
    Thought I could get some E21 hubs when I spied a Baur convertible but it was one with M10 engine and solid discs,cyl head was very clean inside and out.
    New brake pipes and lines have arrived from W & N aswell today: <http://bmw02.jiglu.com/discussion/events/20070815> so just need E21 hubs and a pair of vented discs and time to put it together

David
www.jiglu.com: <http://www.jiglu.com/> – making communities, smarter
Discover the new Windows Vista Learn more!: <http://search.msn.com/results.aspx?q=windows+vista&mkt=en-US&form=QBRE>

www.jiglu.com: <http://www.jiglu.com> – making communities, smarter

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I could do with a drawing to get me started on the brake line configuration. Any ideas where I can source one for the 1600–2?

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15 August 2007 21:20

Hi John,
I have competition Wilwood Calipers 4-pot on all 4 corners with a spot caliper for a handbrake. The front calipers are 1.75" piston and the rear are 1.00" piston. These calipers work off an E12 MC 22.2mm. I need to have my 2002tii calipers refurbished but I will only be using one servo on a single circuit as twin servos will deliver do much braking. divyesh

Type your signature here

____________________________

From: John Hudson [...]
Sent: Wed 15/08/2007 18:18
To: ...
Subject: RE: [bmw02] help with Tii calipers needed

Hi,
The situation with the servos is that the E12 servos have a different ratio of assistance to the 2002 (the servo is also slightly larger). Only a few internal parts are interchangable and I would recommend that you stay with the 02 servos and get them refurbed as required. If you want a single line system, you can use E23 7 series front calipers. The type of brake pad that you use will also affect brake feel etc.
Use the E12 master cyl. The 02 is 19mm dia.
Some people do without the servo if they have fitted the larger master cyl. I have been using the E12 calipers,02 servo and the E12 master cyl and I can just about out brake a standard E30 M3. Like Nick states, the car stops esp when the servos are working properly.

____________________________

        Date: Wed, 15 Aug 2007 14:31:56 +0100
        From: ...
        To: ...
        Subject: Re: [bmw02] help with Tii calipers needed


        ?

        Hi John
        Just picked up a pair of 6 series calipers from a W reg ( I think they used the same floorpan and suspension as the E12?). They fit the tii struts anyway and yes all the nipples are free -I checked they would loosen before I removed the calipers from the car.
         It started pouring with rain so I didn't get around to lifting the bonnet. Is the servo system the same as an E12? If so I will go and get the master cylinder
         Thought I could get some E21 hubs when I spied a Baur convertible but it was one with M10 engine and solid discs,cyl head was very clean inside and out.
         New brake pipes and lines have arrived from W & N aswell today <http://bmw02.jiglu.com/discussion/events/20070815> so just need E21 hubs and a pair of vented discs and time to put it together

        David
        www.jiglu.com <http://www.jiglu.com/> – making communities, smarter

____________________________

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15 August 2007 21:28

Hi Paul,
I need to get my servos refurbished can you let me know your contact details. Divyesh

Type your signature here

____________________________

From: paulhill [...]
Sent: Wed 15/08/2007 18:34
To: ...
Subject: Re: [bmw02] help with Tii calipers needed

Anyone refurbing a pair of servos at past parts bury st eds get intouch with me as I can get a few quid off what they charge which is 150 per servo if I remember correctly Also the original servos for an 02 came in two different bore sizes. I think the piston bore according to past parts. You can't tell untill you take them apart. Don't really know what it all means in the big scheme of things but that's my pennyworth Best paul hill

____________________________

Sent via BlackBerry

-----Original Message-----
        From: John Hudson <...>
        Date: 15 Aug 2007 18:18:35
        To:<...>
        Subject: RE: [bmw02] help with Tii calipers needed





        Hi,
        The situation with the servos is that the E12 servos have a different ratio of assistance to the 2002 (the servo is also slightly larger). Only a few internal parts are interchangable and I would recommend that you stay with the 02 servos and get them refurbed as required. If you want a single line system, you can use E23 7 series front calipers. The type of brake pad that you use will also affect brake feel etc. Use the E12 master cyl. The 02 is 19mm dia.
        Some people do without the servo if they have fitted the larger master cyl. I have been using the E12 calipers,02 servo and the E12 master cyl and I can just about out brake a standard E30 M3. Like Nick states, the car stops esp when the servos are working properly.
____________________________
        Date: Wed, 15 Aug 2007 14:31:56 +0100
        From: ...
        To: ...
        Subject: Re: [bmw02] help with Tii calipers needed

        ?
        Hi John
        Just picked up a pair of 6 series calipers from a W reg ( I think they used the same floorpan and suspension as the E12?). They fit the tii struts anyway and yes all the nipples are free -I checked they would loosen before I removed the calipers from the car. It started pouring with rain so I didn't get around to lifting the bonnet. Is the servo system the same as an E12? If so I will go and get the master cylinder
         Thought I could get some E21 hubs when I spied a Baur convertible but it was one with M10 engine and solid discs,cyl head was very clean inside and out.
         New brake pipes and lines have arrived from W & N aswell today: <http://bmw02.jiglu.com/discussion/events/20070815> so just need E21 hubs and a pair of vented discs and time to put it together

        David
        www.jiglu.com <http://www.jiglu.com/> : <http://www.jiglu.com/> – making communities, smarter
____________________________
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        www.jiglu.com <http://www.jiglu.com/> : <http://www.jiglu.com <http://www.jiglu.com/> > – making communities, smarter

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15 August 2007 21:34

You can mail me on ...
Cheers paul hill

Sent via BlackBerry

-----Original Message-----
From: "Jansari, Divyesh" <...>
Date: 15 Aug 2007 22:28:54
To:<...>
Subject: RE: [bmw02] help with Tii calipers needed


Hi Paul,
I need to get my servos refurbished can you let me know your contact details. Divyesh

Type your signature here
________________________
From: paulhill [ <...> ...] Sent: Wed 15/08/2007 18:34
To: ...: <...>
Subject: Re: [bmw02] help with Tii calipers needed
Anyone refurbing a pair of servos at past parts bury st eds get intouch with me as I can get a few quid off what they charge which is 150 per servo if I remember correctly Also the original servos for an 02 came in two different bore sizes. I think the piston bore according to past parts. You can't tell untill you take them apart. Don't really know what it all means in the big scheme of things but that's my pennyworth Best paul hill
________________________
Sent via BlackBerry
-----Original Message-----
        From: John Hudson <...: <...> >         Date: 15 Aug 2007 18:18:35
        To:<...: <...> >
        Subject: RE: [bmw02] help with Tii calipers needed





        Hi,
        The situation with the servos is that the E12 servos have a different ratio of assistance to the 2002 (the servo is also slightly larger). Only a few internal parts are interchangable and I would recommend that you stay with the 02 servos and get them refurbed as required. If you want a single line system, you can use E23 7 series front calipers. The type of brake pad that you use will also affect brake feel etc. Use the E12 master cyl. The 02 is 19mm dia.         Some people do without the servo if they have fitted the larger master cyl. I have been using the E12 calipers,02 servo and the E12 master cyl and I can just about out brake a standard E30 M3. Like Nick states, the car stops esp when the servos are working properly.
________________________
        Date: Wed, 15 Aug 2007 14:31:56 +0100
        From: ...: <...>         To: ...: <...>
        Subject: Re: [bmw02] help with Tii calipers needed

        ?
        Hi John
        Just picked up a pair of 6 series calipers from a W reg ( I think they used the same floorpan and suspension as the E12?). They fit the tii struts anyway and yes all the nipples are free -I checked they would loosen before I removed the calipers from the car. It started pouring with rain so I didn't get around to lifting the bonnet. Is the servo system the same as an E12? If so I will go and get the master cylinder
         Thought I could get some E21 hubs when I spied a Baur convertible but it was one with M10 engine and solid discs,cyl head was very clean inside and out.
         New brake pipes and lines have arrived from W & N aswell today: <http://bmw02.jiglu.com/discussion/events/20070815: <http://bmw02.jiglu.com/discussion/events/20070815> > so just need E21 hubs and a pair of vented discs and time to put it together

        David
        www.jiglu.com: <http://www.jiglu.com> <http://www.jiglu.com/: <http://www.jiglu.com/> > : <http://www.jiglu.com/: <http://www.jiglu.com/> > – making communities, smarter
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From: "Jansari, Divyesh" <...>
Reply-To: <...>

Hi Divesh,
You may not need to run a servo as the piston sizes are large. It will be a case of suck it and see. Another thing is your disc size will have an effect on your brake effort/pedal feel. The further out the caliper sits from the hub centre, the less pedal presure is required to stop.
The twin servos system will have similar brake pedal assistance as a single one will. If you had two servos on the same brake line, you would be doubling up on the amount of assistance. Not so on a twin line system with a servo on each line.The twin system evolved from the first neue klasse cars and the very first 02's which used single line and I think the changeover date was in 1968.
John.

Date: Wed, 15 Aug 2007 22:27:51 +0100
From: ...
To: ...
Subject: RE: [bmw02] help with Tii calipers needed

Hi John,
I have competition Wilwood Calipers 4-pot on all 4 corners with a spot caliper for a handbrake. The front calipers are 1.75" piston and the rear are 1.00" piston. These calipers work off an E12 MC 22.2mm. I need to have my 2002tii calipers refurbished but I will only be using one servo on a single circuit as twin servos will deliver do much braking. divyesh

Type your signature here
____________________________
From: John Hudson [...]
Sent: Wed 15/08/2007 18:18
To: ...
Subject: RE: [bmw02] help with Tii calipers needed
Hi,
The situation with the servos is that the E12 servos have a different ratio of assistance to the 2002 (the servo is also slightly larger). Only a few internal parts are interchangable and I would recommend that you stay with the 02 servos and get them refurbed as required. If you want a single line system, you can use E23 7 series front calipers. The type of brake pad that you use will also affect brake feel etc.
Use the E12 master cyl. The 02 is 19mm dia.
Some people do without the servo if they have fitted the larger master cyl. I have been using the E12 calipers,02 servo and the E12 master cyl and I can just about out brake a standard E30 M3. Like Nick states, the car stops esp when the servos are working properly.
____________________________
        Date: Wed, 15 Aug 2007 14:31:56 +0100
        From: ...
        To: ...
        Subject: Re: [bmw02] help with Tii calipers needed


        ?

        Hi John
        Just picked up a pair of 6 series calipers from a W reg ( I think they used the same floorpan and suspension as the E12?). They fit the tii struts anyway and yes all the nipples are free -I checked they would loosen before I removed the calipers from the car.
         It started pouring with rain so I didn't get around to lifting the bonnet. Is the servo system the same as an E12? If so I will go and get the master cylinder
         Thought I could get some E21 hubs when I spied a Baur convertible but it was one with M10 engine and solid discs,cyl head was very clean inside and out.
         New brake pipes and lines have arrived from W & N aswell today <http://bmw02.jiglu.com/discussion/events/20070815> so just need E21 hubs and a pair of vented discs and time to put it together

        David
        www.jiglu.com <http://www.jiglu.com/> – making communities, smarter

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16 August 2007 08:33

The right hand drive 02 models (1602 to 2002tii) all used the same servo.

The 1502 used a smaller bore servo.

The E9 models also used the same servos as the 02 range. The 2800cs to 3.0csi used the same as the 1602 to 2002tii and the 3.0csl models used the smaller bore (1502) type.

However the 3.0csa and csi are also listed as using the small bore as well as the bigger bore and I can not find any dates etc to see when and why.

Also the very early right hand drive single circuit 1602-2002 servo is the same as the later larger bore one.

*******************************************************************
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Tel: +44 (0)1263 768768 Fax: +44 (0)1263 768336
www.jaymic.com Email: ...
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----- Original Message -----
From: John Hudson
To: ...
Sent: Wednesday, August 15, 2007 8:24 PM
Subject: RE: [bmw02] help with Tii calipers needed

The confusion with the servos arises from the fact that they would have been changed at least once or twice in a car's life. People may have replaced them with other servos that have come off other model BMs thinking that they were the same. The E3 and E9 cars had different bore sizes to 02's and this is in the part of the servo which is indirectly connected to the smaller diaphram at the bottom of trhe servo.
Hence, it's important to replace/repair these in pairs ensuring that they are matched.

Date: Wed, 15 Aug 2007 18:34:19 +0100
From: ...
To: ...
Subject: Re: [bmw02] help with Tii calipers needed

Anyone refurbing a pair of servos at past parts bury st eds get intouch with me as I can get a few quid off what they charge which is 150 per servo if I remember correctly Also the original servos for an 02 came in two different bore sizes. I think the piston bore according to past parts. You can't tell untill you take them apart. Don't really know what it all means in the big scheme of things but that's my pennyworth Best paul hill

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-----Original Message-----
From: John Hudson <...>
Date: 15 Aug 2007 18:18:35
To:<...>
Subject: RE: [bmw02] help with Tii calipers needed


Hi,
The situation with the servos is that the E12 servos have a different ratio of assistance to the 2002 (the servo is also slightly larger). Only a few internal parts are interchangable and I would recommend that you stay with the 02 servos and get them refurbed as required. If you want a single line system, you can use E23 7 series front calipers. The type of brake pad that you use will also affect brake feel etc.
Use the E12 master cyl. The 02 is 19mm dia.
Some people do without the servo if they have fitted the larger master cyl. I have been using the E12 calipers,02 servo and the E12 master cyl and I can just about out brake a standard E30 M3. Like Nick states, the car stops esp when the servos are working properly.

Date: Wed, 15 Aug 2007 14:31:56 +0100
From: ...
To: ...
Subject: Re: [bmw02] help with Tii calipers needed

Hi John
Just picked up a pair of 6 series calipers from a W reg ( I think they used the same floorpan and suspension as the E12?). They fit the tii struts anyway and yes all the nipples are free -I checked they would loosen before I removed the calipers from the car.   It started pouring with rain so I didn't get around to lifting the bonnet. Is the servo system the same as an E12? If so I will go and get the master cylinder
    Thought I could get some E21 hubs when I spied a Baur convertible but it was one with M10 engine and solid discs,cyl head was very clean inside and out.
    New brake pipes and lines have arrived from W & N aswell today: <http://bmw02.jiglu.com/discussion/events/20070815> so just need E21 hubs and a pair of vented discs and time to put it together

David
www.jiglu.com: <http://www.jiglu.com/> – making communities, smarter

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