VQ37vhr timing chain

jmroy6

Was the timing off on your motor then?

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2012 370z GTM SC

husam2012

I honestly don't know, but it didn't hurt to retime it in case it was.

I was in such a hurry that i didn't even check if it was off and just retimed it.

In the end, it wasn't the timing that caused my low compression on 2-3 cylinders but the fact that the motor sat for a while. I did the leak down and compression right after putting the cover back on and they were still at 100 PSI/ 80% leak down.

I got a tip from a friend here to start the motor for a few minutes and recheck the leakdown/compression. He said that some engines that have sat get stuck piston rings.

Fortunately after a few minutes of idling the engine it started to idle cleaner and after redoing both tests all cylinders passed with flying colors

Keep in mind that compression test gauges vary from brand to brand as I've tried 3 gauges each ranging from 180-240 compression on the same cylinder. What you need to worry about is just the percentage difference between cylinders.

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Creator of the GTR TT Conversion Kit, NA Record Holder (401WHP)
Ecutek Master Tuner (VQ37, VR30, VR38, B58, S55, S58)
BTWTuning