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View Full Version : 416 rejetting issue



xNOILABOYx
02-22-2005, 01:27 PM
i had a 400 w/ WB R4 slipon,which seemed to be jetted fine,after my je 416 kit and stg 2 hotcam i fould my first plug and its BLACK,did anyone else have to rejet when gettin a bigger bore or is it just because the plug was old

duke416ex
02-22-2005, 03:04 PM
Yea, you need to rejet when getting a bigger bore. When I went to a 416 I went from a 154 jet to a 165 jet, but I had a full port and polish.

cals400ex
02-22-2005, 03:38 PM
was it black after checking the plug at idle, mid throttle, or full throttle?