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#21 |
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Randy, if your cam is ground properly, your valve lash will be the same anywhere on the base circle. If not, it has some base circle runout. It should not have that.
If it does, where in that diameter variation, do you choose to set the lash?
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Ed Wright 4156 SS/JA |
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#22 |
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I've just found out that on the base circle, I can be perfect in one spot, and bump it, be perfect, hit it again, and be a couple loose. I've found this on about every grind from every company to be true. I always set tight at the loosest area of the bottom. I set my valves rather tight anyway, but that's just me. Try it and see if you get the same results. Now you have me curious.
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#23 | |
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I have been setting valves by bumping the engine over and setting the lash at the loosest location on the base circle on both flat and roller tappet engines. I have been doing lash this way 50 years, I'm not saying that it's right I am saying that it has worked in past and will work in the future. There are a lot of different ways to skin a cat, so just use what works for you. Bob
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Bob Mulry 7516 STK A & M Motorsports |
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#24 | |
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#25 | |
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We used to set them at TDC, compression stoke. Had the dampener marked each 90 degrees. Follow the firing order. Two revolutions got them all. Most everybody I know bump the starter, set the intakes when the exhaust valve starts to open. No exact point. Set the exhaust when the intake is almost closed. I check my valves each day at the races. Very seldom have to adjust one. And, stopping at the same exact point each time would very unlikely. Lash does not vary while checking it at different points.
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Ed Wright 4156 SS/JA |
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