Originally Posted by
Chopshop85
yeah 1.6 cvh yeah.
Well ive been told that pinging engines can be a sign of a higher compression ratio. I think the head thats on my engine now has been skimmed twice. So im guessing that could be accounting for the compression issue?
If your pinging (Detonating), then your lean, timing is too advanced, or your running to much boost!
A setup will sort that out, or if you want to do something now to save an engine then retard the timing to 8degrees BTDC (if it's not already), run V-Power 99RON, and turn the boost down a couple of psi!
Why do you think it's Det'ing?
As far as skimming pistons, or decomp plate i'd do neither!
Skimming stock RS pistons will just reduce what BHP they can take and a decomp plate will alter the shape and size of the 'squish' area and as a result your burn pattern which if your really unlucky could actually increase the chances of Det!