Lapping the valves is not necessary and can be detrimental to the valve face and the seat. However it is my opinion that new valves should be put into a valve grind machine and checked, just to be sure. I have seen some new valves that are not exactly concentric and touching them up on the valve grinder will guarantee that they are OK.
To lap valves or not? this is the question...
I am rebuilding my 454. I just got the heads back from the machine shop where I had the seats ground. I have brand new valves for it. Springs will remain stock. Cam is only a step up from stock (Edelbrock 2162 with matched intake manifold).
My question is - is it worth lapping the valves? I have searched here in the forums and cant seem to find a definitive answer concerning new valves.
I know how to lap them having done it a few times over the years, just wondering if its even necessary given the valves are new and the machine shop done by a man I trust completely.
Opinions?
Thanks:hurray:
My question is - is it worth lapping the valves? I have searched here in the forums and cant seem to find a definitive answer concerning new valves.
I know how to lap them having done it a few times over the years, just wondering if its even necessary given the valves are new and the machine shop done by a man I trust completely.
Opinions?
Thanks:hurray:
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