Originally Posted by
Karlos G
After almost a year of restoration, both body work and engine, running it in and having it setup last week, I decided to go back to a standard Cam and loose the laggy 285T2 and the fucking head gasket has gone within hours of me fitting the cam!!
I cant understand why this would happen?!
The AFR should not have changed, I marked the Dizzy so that it went back in exactly the same place to maintain the correct ignition timing, i'm only peeking at 17psi and holding at 10psi, and going back to a stock Cam should let less air and fuel mix in making the engine run a little cooler.
Why has the gasket gone??
Is there something i didnt think of?
Karlos.
hi mate i run a piper t2 and the dizzy timing is different to the standard cam timing thought it was 12 btc on standard cam and around 16btc for the piper t2 also if you are changing a cam then i would of thought the mixture needs setting up again as these cams are so far apart in profile
i would talk to your tuner and see what he says
also i just had mine r/r on the t2 with no adjustable cam pulley and it was laggy so whacked on an adjustable vernier and made an extra 21 bhp and lost alot of the lag but its a stage 3 hybrid which are slow to build up with the piper under 2.5k revs
chat with the tuner
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