Originally Posted by
houston
The engine in the video is preheated and ohyes you can tune the lsn/idle in in 2 steps , it takes some special skills though.
I can tell you right now there are not many who can , whether the tuner be a super fast guy or some. Average joe
I sure can't
I took my bnib N21R apart yesterday for inspection before break-in now I have my comp-heat and my inverter... as with the previous Nova (+4) i got new, there was a small metal shaving dangling from the plug insert (from the threading it seems)... watchout, guys. Interestingly the crankcase "closure" (sorry, not sure about the name) had some internal scratches, no effect on performance though. The rear bearing was greased like crazy, with grease residues on the crankshaft too. For reference, the crank pin is at 4.97mm, conrod isn't R7 though, but looks the business.
Definitely older gen mill, but I've seen them run on the track and they are not that far away from the $350 mills... And from afar, now they have the new big purple heads, they create the illusion nicely
Paul