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wastegate spring adjustment
I bought a turbo engine monday, and was fooling around with the wastegate
since it is a spare, and discovered that it is adjustable !!! If I am not mistaken,
all Audi wastegates are similar. The adjustment is hidden by a plug (sort of like
a carbureted car's mixture screw) I drilled a hole the plug, then popped it out
with a screwdriver. The adjustment is a 12mm x 1.25 pitch allen head set
screw. It takes a 6mm allen wrench. There is about 1/4" of adjustment that
I had to heat the wastegate cap to turn the adjustment because it is
loctited in with the green stuff (which is very strong). I doubt that you could
turn the adjustment screw without the heat.
Once the adjustment is free, it would need to be retained in some fashion. I
located some 12mm x 1.25 x 25mm setscrews locally that would work quite
nicely to lock the adjustment in place.
When Charlie's springs come, I should have plenty of boost.
'86 5kcstq Squared