icanfixall
Official GMM hand model
I talked to some design engineers at Mahle Inc. in Tenn. today. I told them I wanted a set of turbo idi big pin pistons for my design turbo idi motor. They said that they wouldn't reccommend them in my non turbo motor even after I told them I was upgrading to the turbo big pin rods. They thought the small pin pistons would be a much better choice. They know I have been running a Banks Sidewinder turbo at 12 lbs of boost for years too. I couldn't get them to tell me why the small pin pistons would be better. I told them that at the very most the motor would turn about 3200 rpm because I don't seem to ever run it much faster about 2900 rpm most of the time and that it would be balanced but still they thought the big pin pistons were not the answer. So, does anybody know whats going on here? Are the turbo cranks differant in any way from the non turbo cranks? I know the bearing sizes on both rod and main journels are the same so what gives? I will be talking with them again on Monday when I place an order so I'll post more info then. They were closed and just finishing up the calls they had gotten today.