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Old May 26th 2020, 04:21
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Join Date: Apr 2009
Location: Groningen The Netherlands
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I'm sorry but I think you're making a mistake with the holes in the pushrods. All they do is leak oil into the heads. Oil takes the path of least resistance, cousing no oil pressure in the rockers. The only bennefit of your pushrod holes in combination with all the HVX mods would be that the extra oil absorbs heat out of the heads. It does'nt do anything for lubrication of the rockers on the rockershaft and even if the hole is faceing the valve, I don't think it will squirt oil high enough to reach the valvetips either.

An unmodified camfollower only delivers oil to the pushrods when the valve is open. That's only 8% of the cam's 360* rotation.

Have you read Bob Hoovers blog about the HVX mods?

http://bobhooversblog.blogspot.com/2.../hvx-mods.html
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