Originally Posted by
Pattojnr
so your saying the picco crank, has 200 deg of duration ? i actually measured 205 deg on all 3 picco engines i have. one an IDM evo 3, a JL std, and a JL tuned. so if one was to open up the duration further to say 215 like nova based motors, would one see a big difference ? i agree the opening would have to opened up,a s there is about 10 deg difference here from the nova engines. just thinking out aloud at the moment, i am in the process of degreeing all my engines. so there is about 4 more to go . so far the plus 12-3sct has the most duration of all the engines i have checked so far.
Hmm, I have data of about 15 Picco based .12 engines in my little book, all engines I timed myself and the only Picco based crank that had a different timing was an old Collari engine. All the other have 200 degrees crank timing (40 -60).
Are you sure you are measuring correctly? How do you set the degree wheel to zero?
I measured these engines: IDM EVO3 (4 engines), LRP Spec4(3 engines), LRP Spec3, Picco EVO3 Edo, Mega ZX12 DSII (2 engines), Collari Inotech and an old Picco EVO.
I also have a few Plus 12-3 ST and SCT on record and the crank duration of the stock engines is usually 210 degrees. Is that also what you measured?