Hello All,

I am thinking of removing the compression release on my Honda GX25 so that I can get it to idle lower. I'm afraid the idle would be high enough that my Kangke Monocoupe that I'm installing in on might want to keep flying instead of landing. Has anybody done this? Any tips? Also, will I ruin the valve cover gasket by removing the valve cover?

Thanks,
Charlie

The compression relaease is a little piece on the cam gear that slightly bumps the exhaust valve open..Why would that have any effect on the idle ? I disabled it on the one I converted for easier hand starting, but don't remember if the idle was too fast...2 stroke gasser 25s don't idle much slower than about 1600 and it doesn't seem to be a problem...
Taking the cover off won't hurt the gasket...
Just did a search, mine idled at 1400 with a Mejzlik 18-6, top rpm was 7500....4 1/2 lbs...Not as strong as a G23, and heavier...Good for a big slow airplane...

The pivot pin is swedged /rolled over on release arm , grind off the rolled portion and you should be able to press the pin out of the arm.
The compression release retracts at 600 cam rpm or 1200 crank rpm. I asked Bob at ASMBA about this as he makes cams for Honda minis and would know.
The compression release will swing out slowly as rpm goes down below 1200 and be in full effect at 750 rpm or lower. Crankshaft rpm. With manufacturer tolerances and tach errors , if you are idling at 1200-1500 rpm , I suggest to take the release out.
In any case you can take it out and not worry. Its only in there to get Honda the low cord pull they like to brag about, who really cares? they start on the first pull all the time anyway , not like starting a two stroke: 100 pulls later just to get a pop?

*edit added rpm clarification*