Upgrade to enjoy this feature!
Vital MX fantasy is free to play, but Premium users receive great benefits. Premium benefits include:
- View and download rider stats
- Pick trends
- Create a private league
- And more!
Only $10 for all 2026 SX, MX, and SMX series.
if I knew anyone else well enough, i would ask them. we have a lot of friends from the tracks, but no one I know well enough to ask them to take a few hours out of their day to look at this
If there is something coming apart down there it will wipe out the new top end.
I sent the piston to them along with the cylinder so they could make the cylinder fit the piston. I got an email from them today telling me that the piston is actually for a cr80, not an 85. I appreciate them telling me this so at least I know it was nothing we did.
I have sent an email back to them asking if I can just buy a piston from them for an 85. The cylinder still needs to be replated, but at least now I know what the problem was.
Thanks to PowerSealUSA for helping me out, I really appreciate it
The Shop
Free shipping: VITALMX
Luxon 4-Post Bar Mounts
$189.95 - $239.95
DeCal Works Huge Plastic Inventory of UFO and Polisport kits.
Now we are just hoping everything comes back in time to get it put back together in time for racing this weekend, and also that I don't have a hard time returning that wrong piston and getting my money back.
Thanks again to everyone for the suggestions and ideas.
If the piston was wrong (for the cr80 instead of the 85) could the bearing also be wrong. I am not sure if the bearing is the same for both bikes. It's only 13 bucks so I am probably just going to order a new one and ship the other one back.
Any thoughts or does any one know if the bearings are the same for both bikes?
Thanks
not going to live or die over it, but it is really not used, it was in the bike for about 5 minutes. I would hope they would do something seeing as how they have really cost me an extra 200 bucks. If they had sent me the right parts, I wouldn't have sent the cylinder to be plated and ,my son would already have two weeks of riding in.
If they give me a hard time, i will let it die peacefully, but I will never order anything from them again. I know big places like that do not need just one customer, but it is what it is and I will just see what happens.
Thanks
as a general rule you should always check the end gap on your rings by placing the ring only in the cylinder. Use a feeler guage to check the gap. New ring should be about .012". The 85 is 1/2 mm bigger bore than the 80, that should have been noticeably loose when putting it together.
Motofab, you are 100% right. I looked at the way the ring was sitting on the 80 piston as compared to the way the ring was sitting on the 85 piston and there is a noticeable difference, chalk this up as a learning experience for me.
Thanks to everyone for all of the suggestions and help, and a special thanks to PowerSealUSA for finding out about the wrong piston and for the quality service and quick turn around time.
Now if we could just get some nice weather her in jersey, we may be able to get otu and race.
Thanks again to everyone
F'in NOOBS...
Pit Row
Post a reply to: clicking noise after replacing piston