Originally Posted by Josh-n-ya

Be careful. I also went this route with the 17.5 motors. I got very good results with cranking timing up to 65 or70 with fdr at 4.0 to 4.1 but with the expense of a motor or two. The stators just don't have it in them to go that far consistently. On a motor tester it shows great numbers revved up but on the track however it's just a mater of time. So when I was asked to run the R1 I was hesitant but throwing it on my little motor tester at only 30* of timing. RPM numbers were the same as killshot at 60*. I was impressed. Proof was on the track. It proved it and is still getting better with our timing reaching up to 40* and fdr at 4.0ish. It's like a 13.5 boosted.