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07-05-2007, 02:47 PM
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FF.Com.Au Hardcore
Join Date: Apr 2006
Posts: 784
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i want to put the cam back in my i6 now and i'm a bit unsure of how the stock valve springs will handle it.
i measured up the cam and it has 480 thou lift at the valve ,both intake and exhaust.according to my hanes manual an xr6 hp should have around 478 thou lift at the valve on the intake side and 455 on the exhaust a standard au cam roughly 444 intake and 475 ex. so i'm thinking the valve springs will handle the lift alright.my question is how much effect dose the duration of a cam have on the valve springs? i have no way of trying to measure the duration on this cam.but to look at side by side with a standard cam ,you can see by the lobes it has a lot more duration than a standard au cam.
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au2 s i6 5 spd , au series 1 xr6 hp motor, cam advanced 5*,jmm cai ,topgun leads,pacey 4480's,3 inch cat,lukey 2 1/2 sports zorst and 3.89 lsd,standard ecu. current best,14.939 @ 93.17. |
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i6 valve srings ????
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