C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Brake Booster (86)

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Old Nov 2, 2007 | 02:26 PM
  #1  
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Default Brake Booster (86)

When I depress the brake pedal on my 86 my idle goes way down and I'm also noticing a hard brake pedal, can I safely assume my booster is shot. I don't hear any vacuum leaks and the line going to the booster checks ok. I seen some metal boosters online for a lot less $$$ than original, what do you guys think. Thanks in advance
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Old Nov 2, 2007 | 03:31 PM
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Old Nov 2, 2007 | 03:59 PM
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Sounds like a booster. I'd just go get a new one from Autozone or the like. Used ones tend to develop the same problems as the one you're taking out. It takes a 13mm, swivel, and about 18" of extension and it's not to bad.
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Old Nov 2, 2007 | 05:15 PM
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booster is my bet. You can replace with a plastic unit - but i like the metal one better
http://www.hotrodsusa.com/store/product341.html

is where I got mine - cheap - and good service - I've been running it for 2 years now - on tracks and autoX's - works great even with bigger brakes!

Some here say it's a PITA to change - really not to bad - you need to pull the drivers seat - 4 nuts - a 5 minute job - that makes it a whole lot easier - that and a set of Wobbler extensions from harbor Freight - 8 bucks for 5 or 6 of em I think - all different sizes - combos of them make reaching the nut hidden partially behind the steering column easy to get to. I did mine in my 86 in about 45 minutes - and there are chimps with tools that are better mechanics than I am!

Carl Johansson
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Old Nov 2, 2007 | 06:45 PM
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Thanks for the help guys, I'll tackle it over the weekend.
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Old Nov 2, 2007 | 08:13 PM
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I installed the metal one with no real problems. If I had to redo it, I'd spray paint it black, first. Just personal preference. I bought it on piratejack.net - a little cheaper than that other site, but it looks like they are all the same mfg.

http://www.piratejack.net/brakebooster.html

Matthew
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