I know this has probably been discussed before. BUT. How and does a donut seat itself?

I just finished refreshing my top end on my F7 and the donut leaks like a seive. Thus completely messing up my clean-up.

Thanks for any advice!

If it's that bad replace it. Might need new springs to put more clamping force on it. Or I always run a bit of High Temp Gasket around it, and the one on the can. Then a dab on the springs to help with vibration.

It is called heat silicon. Dosn't matter how tight your springs are it will still leak a little without it. Cheap just go to the auto parts store and get some. Also it helps if you apply a stip down the spring helps them from breaking, with all the vibration that is on them.

My sled did that when it was new,,spit oil all over the place,, took tin foil and wraped it and it seemed to seal it up,,Ok now...R2R

Put a new donut on it, and a few new springs, all are cheap. If it still leaks, high temp silcone will take care of the rest.