Engine Compression

How much compression should an old (not very).21 engine have??

I had my RB K9 for about 9 months and i've just been turning it over and it doesn't seem to have much compression. I can turn it over fairly easily using 2 fingers on the flywheel. I would have thought it should have been harder than that...?

I think i might have thrashed it to death already.... although it has had at least 10 Gallons of fuel run through it - probably more

Any Thoughts

Chris

[Mark]

a good test is ...

No fuel or after run with in the engine ( plug in )

hold the engine by the fly wheel and see if the engines own weight will take it past Top Dead Center if it rotates easy then yes its low on compression

Thanks Mark very helpful

did as you said and yes it drops past TDC.

I better get saving some pennies for a new one.

Chris

[DEREK]

chris i think you have thrashed the life out of it time for a new one me thinks

[WM-01]

You can also switch to a fuel with a higher oil content and lower nitro as it will help sealing between the piston liner and piston.

hi mate if your getting a new engine i will buy the nakered one i need a new head and back plate for mine give me a call 0781408792 or just pm back cheers steve

Marks ordered me a Killer 10 today.... i wonder how long that will survive?
I wouldn't be so bothered but i hate running in

Steve you have a PM