yeah, without the plug theres a little bit less compression, but it looks like the piston is almost reaching topdeadcenter. its like the shaft locks up when it gets almost all the way up. I havent gotten to the hair dryer yet, im gonna do it after i finish my homework.

ah, another rc'er in school

keep us posted on how it runs I bought one off ebay NIB for $153 Im happy also lol. Ive never seen this engine run before Ive always had P5 in the past, hope its good though.

what the grp .21?

i got the untuned version with the silver head

Yea I got the standard version also. Ive never had a GRP before so I am interested to see how it runs.

ive never bought an engine in my life...so....yeah me too

well, the GRP is a ninja based motor. it's just a ninja with a little less timing, but the tuned version has the more agressive timing i believe

so would you say its on par with a novarossi P5?

i have o experience with the p5, only an old nova. but i can tell you that the grp screams. if i remember right, the .21 and .28 both hit 43k rpm on a dyno stock. if the p5 is a budget motor at all, i believe the grp should have a better power band.

so from what you all say, its normal to have so much pinch that a starter box wont be able to turn the flywheel when the engine is cold?
i didnt get to heating it up today, so one more ?'s

are you supposed to turn the flywheel when you are heating the engine up with a hair dryer?

when you start the engine it should be at bdc, as well as when your done runng it. if you leave the piston up, it will pinck the piston excessively when the motor cools, and you'll start to lose compression faster.