RE: New Radical 621T .21 Off-Road Engine
nascardad-
I just got the 621t, and I'm running it with the radical pipe. Breakin for me has been easy. Alot easier than the STS that this mill replaced. It turns over like it should, and running SUPER rich breakin settings, first tank was just under 230, second around 210, third 200, and now that I'm starting to run it on the street and getting ready to put a tune to it after 8 tanks, I'm coming in at 190. Thru it all, it was about 60F outside. They say this engine likes to run around 180-190. I just switched from the stock plug that came with it to a P6. It has all sorts of bottom end, with 5 mm of spacers on the radical pipe. I got mine from Raceday Hobbies, great guy to deal with. Not sure if he has anymore in stock, though.