Early 325i brakes

General E30 related discussions -
Please put technical questions in E30 Tech Help forum below

Moderator: martauto

User avatar
toby
E30 Zone Addict
E30 Zone Addict
Posts: 3609
Joined: Thu Aug 11, 2005 11:00 pm
Location: Kent

Post Tue Sep 19, 2006 7:06 pm

Years ago, when an H plate was new, I noticed that the C & D reg 325i cars fitted with the earlier engine had less braking power. The pedal seemed harder but less effective.

Is this general? - is there a difference?
I was only a new driver at the time and it was a long time ago so perhaps I'm completely wrong.

If it is true - I'm not quite sure why this would be. The master cylinders differ I think - maybe some other bits.

Anyone know?

Cheers
Toby
User avatar
pnd
E30 Zone Squatter
E30 Zone Squatter
Posts: 1801
Joined: Sat Nov 12, 2005 11:00 pm

Post Tue Sep 19, 2006 7:20 pm

I have noticed this too and was told they uprated the brakes from shit to merely poor from about 1987 on. The guy who told me was an ex head mecfheanic for a bmw dealer who's been working on BM's since the sixties.
zaust
Zone day release
Posts: 13007
Joined: Sun Jan 09, 2005 11:00 pm
Location: Somewhere in Hertfordshire , or press Ctrl + W

Post Tue Sep 19, 2006 7:53 pm

For some reason there is more(lenght) copper pipe on the earlier one's, I put this down to part of the problem, I'm not to sure there is a difference in the abs unit's.
M30 Tech 1 Touring on gas.
Image
User avatar
toby
E30 Zone Addict
E30 Zone Addict
Posts: 3609
Joined: Thu Aug 11, 2005 11:00 pm
Location: Kent

Post Tue Sep 19, 2006 11:12 pm

Come on... where are all the E30 geeks?

Perhaps it's down to a combination of all the parts that were updated - but that's a boring answer.
Image
SCOTT325SE
Married to the E30 Zone
Married to the E30 Zone
Posts: 12582
Joined: Sun Jan 09, 2005 11:00 pm
Location: Carmarthen (West Wales)

Post Tue Sep 19, 2006 11:16 pm

there is a difference in the actual branding of some years of e30 brake calipers - some are ATE, some are girling, some are something else. It is possible that the internals of one brand provide a better feel and are more effective due to a lesser amount of fluid sitting in the caliper, or the entry direction and porting in the calipers and brake servo being more direct and efficient.

just a geek note, but the pipes arent made of copper... they are steel - thats why they rust and fail MOT's.
User avatar
fowler
Boost Junkie
Posts: 3468
Joined: Mon Jan 10, 2005 11:00 pm
Location: New Addington/Croydon

Post Wed Sep 20, 2006 7:46 am

and they have proprtioning valve on the back of the servo give them a good stamp to get them going
EX A-Tech Workshop bitch !!!
325i Turbo touring (Aka Project Fridge)
gone but not forgotten
zaust
Zone day release
Posts: 13007
Joined: Sun Jan 09, 2005 11:00 pm
Location: Somewhere in Hertfordshire , or press Ctrl + W

Post Wed Sep 20, 2006 8:46 am

SCOTT325SE wrote:there is a difference in the actual branding of some years of e30 brake calipers - some are ATE, some are girling, some are something else. It is possible that the internals of one brand provide a better feel and are more effective due to a lesser amount of fluid sitting in the caliper, or the entry direction and porting in the calipers and brake servo being more direct and efficient.

just a geek note, but the pipes arent made of copper... they are steel - thats why they rust and fail MOT's.

This is true.. But i always replace with copper..
M30 Tech 1 Touring on gas.
Image
User avatar
fowler
Boost Junkie
Posts: 3468
Joined: Mon Jan 10, 2005 11:00 pm
Location: New Addington/Croydon

Post Wed Sep 20, 2006 8:49 am

how expensive to change to copper Marc need a chat will call you !!!
EX A-Tech Workshop bitch !!!
325i Turbo touring (Aka Project Fridge)
gone but not forgotten
zaust
Zone day release
Posts: 13007
Joined: Sun Jan 09, 2005 11:00 pm
Location: Somewhere in Hertfordshire , or press Ctrl + W

Post Wed Sep 20, 2006 8:59 am

We need to sort out the 24's as well. I feel a trip to spain comming on..
M30 Tech 1 Touring on gas.
Image
User avatar
fowler
Boost Junkie
Posts: 3468
Joined: Mon Jan 10, 2005 11:00 pm
Location: New Addington/Croydon

Post Wed Sep 20, 2006 9:04 am

you know this my friend when where i will be there ! Road trip yippeeeeeeeeeee!!!! :evil:
EX A-Tech Workshop bitch !!!
325i Turbo touring (Aka Project Fridge)
gone but not forgotten