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Thumper · 07-31-2022, 09:52 AM

If you haven't adjusted the valves, definitely adjust them ASAP. No change needed for pipe change. Exhaust gap 0.005 to 0.007", and intake 0.003 to 0.005" is all good (adjust when the engine is cold).

Edit... These gaps are too wide, should be closer to 0.002/0.003 (intake/exhaust), give or take 0.001"
Some run these on the narrow side. I have erred on the wide side to be sure that the valves seal, but I know too wide can damage the tappet surface in the long run.

07-31-2022, 09:52 AM	#2
Thumper Join Date: Feb 2021 Location: Kansas City Posts: 2,322	If you haven't adjusted the valves, definitely adjust them ASAP. No change needed for pipe change. Exhaust gap 0.005 to 0.007", and intake 0.003 to 0.005" is all good (adjust when the engine is cold). Edit... These gaps are too wide, should be closer to 0.002/0.003 (intake/exhaust), give or take 0.001" Some run these on the narrow side. I have erred on the wide side to be sure that the valves seal, but I know too wide can damage the tappet surface in the long run. Last edited by Thumper; 08-01-2022 at 07:58 AM.
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