Thread: Valve springs/specifications for a 40 Merc
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Old 06-14-2010, 05:34 PM   #4
Pete
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Default Re: Valve springs/specifications for a 40 Merc
Quote:
Originally Posted by F1 Flathead View Post
As mentioned in another thread, I have my 40 Merc motor down for a valve job since it appears I have some valves hanging up. I'd like to check the valve springs for proper load. Does anyone have the spec? Also can I get a recommendation for buying replacements if needed? The previous owner said that he installed a "3/4 race" cam so it may not be stock. I plan to check the lift to confirm. I see that it already has adjustable lifters. Should I buy some higher load springs if the cam is, in fact, a performance version?
Thanks,
Dan
If you do in fact have a "3/4" cam it might be cheap insurance to put a set of Zephyr springs in.
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