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Bruce Lancaster · 01-23-2014, 02:24 PM

The things are annoying but usable if the lifters are close to stock height. Much drop makes them useless as noted by all. If they are usable in your case, using them is going to be less work than taking everything back apart for drilling...
Flatheads generally do not need repeated valve adjustments as wear is very low there in stock or mild engines. That being said, some recent lifters will not hold adjustment because of poor machining. Check lifter height and go for it if practical...
If you have a small base circle, you can cope by turning cam repeatedly during adjustment, reallydamnannoying but again probably easier than dismantling engine.
Removing cam gear is quick and easy, and this allows you to work just from the cam and not turn entire engine for each move.

01-23-2014, 02:24 PM	#10
Bruce Lancaster Member Emeritus Join Date: May 2010 Location: Madison, NJ Posts: 5,230	Re: some advice for adjusting valves The things are annoying but usable if the lifters are close to stock height. Much drop makes them useless as noted by all. If they are usable in your case, using them is going to be less work than taking everything back apart for drilling... Flatheads generally do not need repeated valve adjustments as wear is very low there in stock or mild engines. That being said, some recent lifters will not hold adjustment because of poor machining. Check lifter height and go for it if practical... If you have a small base circle, you can cope by turning cam repeatedly during adjustment, reallydamnannoying but again probably easier than dismantling engine. Removing cam gear is quick and easy, and this allows you to work just from the cam and not turn entire engine for each move.