Those who have either p30 or pr3 installed… I have now 400 miles after installation of p30 with new rings and new headgasket. My question: while accelerating, up to 3.5K rpm, the engine now sounds different, it is a little bit like lawn mower, chatters, somewhat audible, but definitely different than with the old pistons. It feels different for sure, just liek I said, like accelereting lawnmower tratatataaaatraaatatataa, drives me crazy just thinking maybe something went wrong. I feel the engine is a bit hesitant than before. it lost that zest. my engine originaly has only 60K miles, did i make mistake chaniging pistons on such relatively nice engine.
I noticed that fuel economy increase somewhat, but maybe because I am still breaking-in, not steping on the gas so fast.
and the last question, where should I set the timing now- 16 btdc or 18?
Any ideas why it behaves like this? or is it normal? my wife’s civic d16z6 pulls much smoother, it f§&%$ grabs, it is embarasing to me to loose to 1.6l.