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uwanna uwanna is offline
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Join Date: Jan 2009
Location: Marietta, Ga (Atlanta)
Posts: 2,970
Quote:
Originally Posted by uwanna View Post
I had an identical symptom on my '80 SC. Tried everything with no luck, till I changed out the master cylinder. Voila! had super brakes once again.
your problem may be something else, but sounds like you've tried everything else!

EDIT: just reread your post and saw you replaced the MC, maybe the new one is defective. Just guessing.
Your problem is PRECISLY the problem I had on my car. Everything you have mentioned about not being able to do an agressive stop happened to me. I know exactly what you mean about feeling a "hard stop" in the pedal under hard braking. I mentioned that I had replaced the MC, but neglected to also mention that I replaced the power booster as well! In fact I bought a complete unit, MC, booster on Fleabay and all still assembled. Installed, and good as new! I initially thought it must have been the MC that fixed it, but now I'm sure it was the power booster. Given everything you have done, I would bet you also have a faulty power booster unit.
As an aside, I have seen complete units on sale recently on Fleabay from the several Pcar dismantlers that sell there. Here is one from the same guy I bought mine from. I have bought many parts from this guy and have been very pleased with value and fast shipping. (no connection, just happy customer) This is a relisting, because it went unsold at $49.00 !!!

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=200453681874
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'80SC Widebody 3.6 transplant Anthracite "The Rocket"
Long gone but still miss them all:
'77 911 Targa, '72 BMW 3.0CS Coupe(finest car I ever had!)
'71 911T Coupe White, '70 911T Coupe Blue
'68 911 Coupe Orange, '68 911L Soft Window Targa

Last edited by uwanna; 03-25-2010 at 09:11 AM..
Old 03-25-2010, 08:03 AM
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