Technical Tips > Brakes, Suspensions, Steering, Wheels & Tyres

boosters

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White88:
Hi everybody, I'm new to this site and I was hoping someone could help me out. I bought my car several weeks ago.C4 1988 coupe all original. Last week my brake booster failed ( hard pedal and making hissing noises) found the EGR pipe running up the engine with the heat protection thingy on had burnt a hole in the booster right where the flange is ,(i have 2-3mm gap between both) so i bought a new one, all good for a couple days untill it happened again, this time the hole was bigger. Okay now i realise how hot these things get. So what do you guys have on your cars as a heat sheild to protect the plastic booster. I saw a metal booster on the corvette forum site the other day I'm thinking of doing a bit of investigation on much and how long to get it here. Any thoughts?

Thunder Kiss:
Hi White88, welcome to the forum.

My EGR pipe has quite a bit of "woven material" wound around it to protect the booster.  Even though it's fairly thick, there is still around 10mm clearance between it and the booster.

Otherwise I've seen some cars without the EGR pipe at all.  There must be some way around it that doesn't trigger error codes ("service engine soon" light on dash).

Here is a pic of a modified '86 without the pipe (although it does have a metal booster):

White88:
If anybody you C4 owners are worried about your boosters melting, go to www.hotrodsusa.com they have metal boosters there ,landed in oz for $270.00 AUD a lot cheaper orig part ($480.00) to suit 85-91 models and it won't melt !.Nothing worse than coming off the freeway doing 110kmh and finding the pedal won't go down.It's something the conversion people "should" be doing as a saftey issue. By the way i just bought one last night they said 3-7 days. ( i won't hold my breath)

Vette Obsessed:
It's not really the conversion peoples fault - GM built these cars (with the exception of ZR1's) with plastic boosters...

TIPPA:
Maybe White88 is saying with the conversion the booster is on the other side. I own a C3 but assume that this brings it closer to the EGR pipe which in turn melts it... In that case you would prob be right to assume it would be the up to the conversion people to recognise a safety issue like that.... or the RTA (?) for allowing the conversion to meet ADRs.

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