Re: 178 mm Crankshaft Pulley with 64 mm Supercharger Pulley
I ran a 178 with a 64mm pulley for a day. Got to the the drag strip, ran with the stock supercharger pulley most of the night. (12 flat all night) Popped on the 64 mm pulley and ran a 11.9x, got an over boost cell (22lbs) and pondered the measly .02 improvement. Intake temperatures went WAY up. Killed power up top. Ran like a beast down low. Decided to drive the 2 hours home with the stacked setup. Super touchy at part throttle and concerning. AFR's stayed in the 14's while getting on it on the expressway. It was slow to drop into the 12's. Too dangerous for me so I returned to the stock pulley. I ran water/meth for a while until it malfunctioned and filled the intercooler outlet with the mixture. The nozzle was in the Y pipe pointing in front of the IAT sensor. Meth came on in the burnout box and emptied the washer bottle into the intercooler outlet. Got it home, thought I had fixed it. Armed the system and the engine died. Filled it up again. Needless to say it was not worth it for me. Yes it works. Too much trouble for my situation but it will be amazing as long as nothing goes wrong.
Les