small engine ?

[scat]

when you are building an engine of any brand what do you do about the automic pressure relief. ok let me explain when the piston travels around {up} to the power stroke right be fore it sparks the exhaust valve lifts ever so slightly to relief some pressure. now i have down some studdeing about this and all i can find out is that it helps you start the engine easier. ok i have found all my kholers have this and all my briggs have this does hondas have it what about wisconsins; do you just leave it or grind on the lappet or valve or cam/ or have any of you guys ran it to this or is it just me.

 

[ed1380]

yeah its there to help you start it. id leave it unless you're popeye

 

[Russ2251]

If ground...power loss is guaranteed.

 

[Kenny_McCormic]

It somehow doesnt do this at higher RPM, its called a compression release, some cms just have a bump, others have a mechanism on the camshaft the shuts off with cent force.

 

[THE HUNTER]

Automatic Compression Release (or ACR)
just leave it. it helps make starting easier. when the engine RPM is really low (when starting) its on, and when the engine starts the centripetal force causes it to stop opening the exhaust valve. that's why its called automatic. it wont cause any problems... unless you want a really low idle for some reason.