Your correct .004 per inch of bore. I believe mine was at .012. I just touched it about .0015 more.

 

.200mm is only .007 of an inch. That's way too tight.

part number for the rings should be xg8300. At least that's what I received. Wossner may use different rings.
Just be sure to use the piston to square the ring in the bore. If it's that tight you will need to get a fine knife sharping stone.

If you do fine you need to adjust don't forget to deburr the rings edges from stoning the end. Should be no sharp edges around the filed end.

 

Already got a reply from Mark at KustomKraft, he says to go with Wossners specs on the rings because its a forged piston not cast and forged swells different than stock. so i need to open up to:

.004"x3.26"= 0.0130" (0.331 mm) Top Ring
.005"x3.26"=0.0163" (0.414 mm) 2nd Ring

Not sure what to do with the oil ring as the gap seems pretty darn big but wossner supplies no maximum spec on the oil ring.

 

.015 inch on oil rings. Not as important as the top.

strange they have a bigger factory of .005 for second ring. Most piston the second is a little tighter.

 

Thats what i thought but that is what it says on the wossner website??

 

Some builder will run larger gaps on rings. The slight leakage it causes keeps the rings clear and help stop ring fludder at high rpm.

 

What do i do if my oil ring is already at .041" (kinda hard to measure but it seems pretty big), im talking about the oil scraper, the wavy looking one, not the top and bottom oil rings above/below it

I have my rings set at .013 (top), .014 (2nd) only because .016 seems really big but... what do you think, go all the way to wossners .016 for #2?

thanks for the help! never done this before

 

Your fine with the oil control ring ( wavy looking one) You don't gap that one. My rings are at .013 /.014 with 0 issues but yes use wossner specs. Different piston run rings at different temps due to ring location. The higher the ring the higher the temp. They do this because it make the combustion more effeicant.

Wossner is an excellent piston. Work of art really. If they want bigger gaps let them have it.

BTW Your your doing just fine!

 

Just a FYI. Running a larger end gap only safe guards you. Now we are not talking about a high hp engine with the klx but it still applies.

too lean jetting , poor fuel , hot engine , incorrect timing causing detonation can butt rings together in a hurry.

Rings with gaps of .060 can even butt if severe detonation occurs.

I have been building engines for over 20 years.I know you would be fine with your end gaps but I would still use there spec.

 

What did you run for break in oil? I typically run Rotella T6 synthetic and i know synthetic is not recommended for break in.