I recently adjusted my valves on my b16 and i lost quarter mile time. I adjusted them to the c-speedracing.com factory specs for a b16 which is .006 intake and .007 exhaust. I was wondering if anyone has a b16 with factory cams and valvetrain and what they have their valves set at, i have a jdm b16 second gen. i was wondering what they're supposed to be set at. any help would be appreciated, thanks.

 

how much time did you lose? there are a number of things that it could be related to...how consistant were you to begin with? track conditions? heat? humidity? tires...burnout scenarios...launch differences...how many dumps you have put on your clutch since you last ran...how hot the clutch was...dude...when running in the mid-low 15 seconds in a car dont attest losing a few tenths to only one thing that you have done...it could play a small role but not much... i dont know how to answer your question in the technical sense im just offering a lil advice not to flip if your times drop...they can vary a lot with a daily driver.

Dave