I have a SIG Four Star 60 with a Thunder Tiger Engine that has sat for about 5 yrs not being used. Can anyone tell me how I can confirm the compression is still good?

Thanks

I usually gt some fuel running thru it and see if it starts...it usually does if it ran well before!

Hi!
Compression is you least problem. It doesn't just dissapear with age. The problem is the ball bearings! Old congealled Castor oil is destroying them.

A shot of Dawn Power Dissolver will undestroy them unless they are rusted. Agreed though on compression. It doesn't go away from an engine sitting. About the only thing you can do to ruin that is run an engine with your mix way off. Too rich ruins the pinch eventually and too lean makes the liner wear and/or peel.