lash cap safty
larger surface area on a skinny valve stem, that's whats on a hi flow small block chev head with ultra high lift cam, also helps keep the keepers from flying out as easy during valve float.
On these 212cc industrial type engines with there cheese soft valve springs its probably cheap insurance in the event that someone accidentally over revs the motor and floats the valves before the governor can pull it back (broken drive chain or belt for example). If the valves are floated and the piston hits the slow in closing exhaust valve the dogged in retainer can separate from the valve and it will drop. The lash cap and retainer are fitted pieces that need a lot of room to become separated, acts like an additional interlock.
They don't put one on the intake cause it's not in danger of being hit by the piston during valve float.
larger surface area on a skinny valve stem, that's whats on a hi flow small block chev head with ultra high lift cam, also helps keep the keepers from flying out as easy during valve float.
On these 212cc industrial type engines with there cheese soft valve springs its probably cheap insurance in the event that someone accidentally over revs the motor and floats the valves before the governor can pull it back (broken drive chain or belt for example). If the valves are floated and the piston hits the slow in closing exhaust valve the dogged in retainer can separate from the valve and it will drop. The lash cap and retainer are fitted pieces that need a lot of room to become separated, acts like an additional interlock.
They don't put one on the intake cause it's not in danger of being hit by the piston during valve float.
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makin it fit
Yyou've answered your own question, you have to grind it, make it like the exhaust. from that other thread you seem to know about adding shims so as to maintain correct installed height.
i looked it over on a head i have here and it looks like it should work.
Llet us know how it go's.
What was the reason again that people do this mod?
Yyou've answered your own question, you have to grind it, make it like the exhaust. from that other thread you seem to know about adding shims so as to maintain correct installed height.
i looked it over on a head i have here and it looks like it should work.
Llet us know how it go's.
What was the reason again that people do this mod?
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