Rear disc conversion - need to change master cylinder?

Need technical Q/A then you're in the right place

Moderator: martauto

User avatar
andye30m3
E30 Zone Newbie
E30 Zone Newbie
Posts: 95
Joined: Sun May 28, 2006 11:00 pm

Post Thu Jan 16, 2014 9:26 pm

My PBMW 320i has had a rear disc conversion at some point in its life and I'm not 100% sure it's been done correctly

Tends to wear out rear pads quite quickly compared to fronts and I'm not that confident on he brakes. Tried various pads but still don't seam 100% correct

Does anyone know if you need to change the master cylinder as well?

I guess it could also be the regulator valve?
Top
milescook
E30 Zone Camper
E30 Zone Camper
Posts: 1285
Joined: Thu Jan 13, 2011 11:00 pm
Location: The 'bran of Cwm

Post Thu Jan 16, 2014 9:40 pm

Haven't seen that advice anywhere myself to change the m/c.
The story so far... http://www.cookracing.co.uk/

Also please help the race budget by watching some videos :) https://www.youtube.com/cookracinguk
Top
Tedswagon
E30 Zone Addict
E30 Zone Addict
Posts: 2195
Joined: Sun Nov 23, 2008 11:00 pm
Location: Edinburgh

Post Thu Jan 16, 2014 9:42 pm

Could it just be sticky calipers? Have you refurbished them? New seals?
E30 316i auto coupe build thread here viewtopic.php?f=25&t=273035
Top
Tedswagon
E30 Zone Addict
E30 Zone Addict
Posts: 2195
Joined: Sun Nov 23, 2008 11:00 pm
Location: Edinburgh

Post Thu Jan 16, 2014 9:44 pm

If it's sticky calipers the heat would be getting transferred into your brake fluid as well, are you getting brake fade?
E30 316i auto coupe build thread here viewtopic.php?f=25&t=273035
Top
User avatar
Brianmoooore
E30 Zone Team Member
E30 Zone Team Member
Posts: 49360
Joined: Mon Jan 10, 2005 11:00 pm

Post Thu Jan 16, 2014 9:47 pm

No M/C change needed.
Top
User avatar
andye30m3
E30 Zone Newbie
E30 Zone Newbie
Posts: 95
Joined: Sun May 28, 2006 11:00 pm

Post Thu Jan 16, 2014 9:49 pm

Calipers have all been serviced

Does anyone know if the pressure regulator is different between drum and disc cars?

Could also just be me being a bit rubbish!

I don't find the fronts tend to lock that easily (i have no abs) and I was finding the front rs29's seamed to glaze over which others didn't seam to suffer from
Top

Return to “E30 Technical Help”