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gomarlins3 · 10-05-2007, 10:47 AM

I went to a 7 lb pulley on my CT system. No problems that were not self inflicted. I have heard of people going to 9 lbs w/o having to change the head gasket. I think once you get above that, you need to change the head gasket and fuel injectors. Heck, you may need to change out the stock fuel injectors with a 9 lb. for all I know. I tried changing them to 550's with my 7 lb. pulley and got 15 more WHP, but the driveability suffered. I am back to the stock 360 injectors.

10-05-2007, 10:47 AM	#2 (permalink)
gomarlins3 "Enjoy the drive" Join Date: Jul 2005 Location: Kuna Idaho Posts: 2,644	I went to a 7 lb pulley on my CT system. No problems that were not self inflicted. I have heard of people going to 9 lbs w/o having to change the head gasket. I think once you get above that, you need to change the head gasket and fuel injectors. Heck, you may need to change out the stock fuel injectors with a 9 lb. for all I know. I tried changing them to 550's with my 7 lb. pulley and got 15 more WHP, but the driveability suffered. I am back to the stock 360 injectors. __________________ Yablownowitz Racing brought to you by Anytime Fitness. Happiness is a nice road, great weather, and driving the S with Sue in the seat next to me. "Whatever you do, where ever you go, enjoy the drive." I know for a FACT that the last year of production of the S2000 is 2003!!!!! After that, it will be the S2200 under an assumed name.