Originally Posted by RipModz (Post 11115049)

I want to know what nova .12 is the best for the money? Please help

Originally Posted by Wachsmann64 (Post 11114951)

How is the conrod's big end? Have you checked the small end to make sure no pieces are missing? There seem to be marks on the conrod as well, close to the piston's skirt.

Originally Posted by Roelof (Post 11113412)

No damaged at the side of the piston, I would say if you did not have a blown plug or a broken ball from a bearing it must be a to low head clearance. First of all check the play on the main bearing and conrod. If that is all OK then you must add at least 0.5mm of headshims.....

Originally Posted by Roelof (Post 11114024)

Ever seen the result of a pre-detonation? That looks more like it was sandblasted, this is not. And the moment has nothing to do with the opening of the exhaust.
Normally you get the ignition just before TDC and because there is a slow reaction the combustion after TDC. With pre detonation the combustion will start just before or on TDC making a uge pressure.

This looks like dirts from somewhere or I would say a to low head clearance.

Originally Posted by rip67vdub (Post 11115063)

IMO, can't go wrong with the flash .12


My other choices would be the Mega ZX12 DSII and the Picco JLR Evo3.

Originally Posted by ToysRUsKid (Post 11106421)

for a new break-in Keep-On .12, does anything else need to be done before it can be raced?

Originally Posted by ToysRUsKid (Post 11118487)

anybody...:confused:

Originally Posted by Grinder (Post 11118648)

Idle one tank, then run it on the track at a rich setting for a couple tanks. Then start race tuning.;)

Originally Posted by GREGORY! (Post 11133876)

hi.there is a back plate with steal insert for 11.5mm crankcase 12 novarossi engine?i have seen engines with that type of backplate but they are for 11.9mm crankcase.