Master of Cylinders

[robweenerpi]

Yes I too am wondering how increasing the size of your master cylinder bore would affect the grip the tires have on the road, that determines your braking distance.

[Chapel]

so, if Im going to swap my master cylinder, should I just grab an E30 M3 one, the 25mm one (what car is that off of?) or do a direct replacement with the standard 325i one?

[parkerbink]

I got the 25mm one from a 750 it goes in next week, I will let you know how it feels/works.

[Schnell 318]

is there an mc upgrade for the 318 with rear drums?

[Ryan Stewart]

NOt directly.

Here is the MC out of a 535. You can see how its for a car with ABS because it only has one front port. If you dont have ABS you will need to fabricate a t-fitting.

Are the drums cable? If so then you could probably just plug in both fronts but I dont see why you are worried about upgrading the fronts while the rears still are so bad.

I would work on the rear disks and vented front first.

[parkerbink]

Here's the one I got from Patrick .25mm from a 750

[Brew]

so, if Im going to swap my master cylinder, should I just grab an E30 M3 one, the 25mm one (what car is that off of?) or do a direct replacement with the standard 325i one?

If you want an e30 m3 one, I've got one that I'll sell for 30 bucks.

[Chapel]

I bought the 25mm one from Ryan earlier today

[Chapel]

god I hope my reservoir fits on this MC...

[Ryan Stewart]

The 325i one I jacked from a parts car fit it. I just didnt use it because I went with a much more complicated setup that required a remote resevior.

Sadly its not here and wont be here till a week or else I would send it with the MC.

[Brew]

god I hope my reservoir fits on this MC...

It most likely will, but the fitting on the brake lines might be different.

[schnitzer teil-jäger]

http://e30m3performance.com/installs/installs-1/25mc/25mc.htm

wes

[Chapel]

good thing I work at a BMW Dealership.
I hope I dont have to replace that hard line though... the lines running into the ABS pump are generally a bitchass to get out.

[parkerbink]

Damn! I had no idea I needed a 10mm break line :( guess it's not going in until next month.

[65Matt]

Here's my MC I bought from Jonathan Chan on the bimmerforums message board. It went in my '89 325i with no problems, direct fit. I like the firm pedal, but it does take more effort. Not sure what to compare it to since my old one went out shortly after buying the car.

http://e30tech.com/index.php?module=photoshare&func=viewimage&iid=596&viewkey=