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WRX or STi Brake Booster fit?

Posted: Sun Apr 04, 2010 7:31 pm
by wtdash
I'm still having issues w/my brakes and would like to try a different brake booster.

I upgraded to a Single Diaphragm from a USED Impreza and didn't notice an improvement.

I may just buy a new/rebuilt one, but I saw on the Forester site the STi BB is a great upgrade, but don't know if they'll fit in my '90 Legacy.


Thanks,
Td

Re: WRX or STi Brake Booster fit?

Posted: Mon Apr 05, 2010 6:45 pm
by Legacy777
Don't quote me on it.....but I don't see why it wouldn't fit.

Re: WRX or STi Brake Booster fit?

Posted: Tue Apr 06, 2010 10:52 pm
by wtdash
I think I know Why it won't work. The Master Cylinder is different - older style on Left:
Image

I have the non-ABS brakes and my MC is an 'inny' not an 'outy'.

:x

Re: WRX or STi Brake Booster fit?

Posted: Tue Apr 06, 2010 11:01 pm
by SiCkSTi04
could you compare the Sti MC to one of our legacys MC that has ABS?

Re: WRX or STi Brake Booster fit?

Posted: Tue Apr 06, 2010 11:17 pm
by wtdash
I don't have one avl., but I believe they have the same type of connection as the non-abs.

Re: WRX or STi Brake Booster fit?

Posted: Tue Apr 06, 2010 11:29 pm
by Legacy777
Hmmm....wonder if you could switch the guts. Assuming the bore is the same size and the ports are at the same distance from the end....I don't see why it wouldn't work.

Here's some pics of one I took apart
http://www.main.experiencetherave.com/s ... mastercyl/

Here's pics of an ABS one.
http://www.main.experiencetherave.com/subaru/images/MC/

Same as the non-abs MC, but without the bottom castings drilled and tapped.

Re: WRX or STi Brake Booster fit?

Posted: Fri Apr 16, 2010 2:39 am
by SiCkSTi04
wtdash wrote:I think I know Why it won't work. The Master Cylinder is different - older style on Left:
Image

I have the non-ABS brakes and my MC is an 'inny' not an 'outy'.

:x
i remember seeing the WRX MC and it looks just like the STi MC but with the 'inny' but its still abs. i'll try to find the picture.