Originally Posted by gladcow

Hi, i have a g4js which i picked up last year. I finally obtained everything i need to get the car running when i got my hands on a jl red dot. At the time I wasn't aware that picco's used smaller diameter crankshafts. I picked the engine up used so I do not have the collet which they normally come with. I tried the one for the nt1, the taper seems to match but it is still too big. I can't seem to find a picco one anywhere designed for the g4. Is there anyone that can tell me which collet they use? The one with the engine comes with or is there some aftermarket one that works well? Also would you guys advice against grinding the collet down to make it fit? I know it might be kind of out of place here but i think both models utilize the same collet. Thanks in advance for any help.