I have been porting Eaton M-90s for about 6 years now as a hobby. I will be offering many different levels of porting from basic porting to welding and porting. Like most i can rebuild the nose drive and replace the rear needle bearings in the case. A basic port would be simply enlarging the inlet to the blower as far as it can go, matching the intake plenum and smothing the exit. I pick up 1-2 PSI more boost and like any improvment on the intake side you reduce pumping losses $200.00. Next level would be welding up the back of the blower to increase the duration of rotor filling plus standered porting $400.00. Just about anything you want i can make if you have the money. Remember this is a hobby and if i dont have the time to finish what you want i will not do it. Turn around is usally 3 days. Please E-mail with questions and more options.
Brian Bitner
BKB
Brian Bitner
BKB