If you mount the 2nd ring on a Wiseco HC piston kit w wrong side up,
what will the result/damages be?
Never seen the setup in question, but the second ring is usually another compression ring and the way they work is for compression gasses to get behind the ring and force it out against the cylinder wall. If any thing I would think you might reduce the amount of gas pressure allowed behind the ring thereby reducing its sealing effect.
Could possibly allow some blowby. Years ago I used to leave the second ring out of my race engine. FYI most modern small two strokes (chain saws) only have one ring.
Sometimes the 2nd rings are a tapered 'scraper' style.
Prolly best to call Wiseco and ask them....
QuoteCould possibly allow some blowby.
QuoteSometimes the 2nd rings are a tapered 'scraper' style.
My reason f asking.
I have quite high oil consumtion though I think I`ve been
thorough w the rings.
A couple of thoughts. It may take longer than expected for the aftermarket rings to seat against a used cylinder wall. How many miles have you got on the new pistons? And, what are you calling high oil consumption (some guys seem to thing one ml every oil change is too much). And although it's still sort of a controversial topic, did you ride it hard while seating the new rings?
I'm really thinking out loud now, but did you use synthetic oil during the break-in. I know that bikes come from the factory with synthetic oil these days and the conventional wisdom is that it's OK for break-in, but I'm not sure that applies to modified motors with aftermarket pistons and rings.
Forged pistons I think have more cold clearance and take a little longer to reach normal operating temp and normal clearance. If you're riding in the cold a lot in Sweden it could be taking your bike a long time to reach operating temp and using more oil in the meantime.
Again, just thinking out loud.