clicking noise after replacing piston

Cygnus
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14845
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Hanover, CO, USA
2/26/2010 4:25pm
You don't know any other riders with some mechanical ability to looks at it for you? I can't be that hard to find. Go buy a mechanics stethoscope to pin point the noise.
TKF Racing
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69
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12/1/2009
Location
Rockaway, NJ, USA
2/26/2010 6:20pm
only one and he was the one who helped me replace the piston...now he feels bad because he thinks it is something he did

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
tunedlength
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Ontario, CA, USA
2/26/2010 6:46pm
I think I would split the cases and have a look at the bottom end.
If there is something coming apart down there it will wipe out the new top end.
TKF Racing
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Location
Rockaway, NJ, USA
3/4/2010 6:15pm
well here is the latest from PowerSealUSA...

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

3/8/2010 4:35pm
WOW you think that would be the first thing the shop would have checked. Re-plating on a couple year old cylinder usually isn't necessary.
89'cr dude
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The Middle Of Nowhere, NY, USA
3/9/2010 4:17pm
your cylinder was probobly fine until that 82.9 CC piston started slapping around in an 84 CC engine. that sucks but now you know your bike will be good when put together.
Void Main
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USA
3/9/2010 5:33pm
Damn, that would probably make a bit of noise. Sorta reminds me of an old girlfriend.
TKF Racing
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Location
Rockaway, NJ, USA
3/9/2010 6:03pm
I hear ya cr dude. I am even more glad that is was nothing that my friend or I did.

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.
TKF Racing
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12/1/2009
Location
Rockaway, NJ, USA
3/10/2010 3:06pm
I got to thinking today about the one last part I originally ordered, the bearing. I have reordered all new gaskets, got a new piston from PowerSeal, but I am wondering about the bearing.

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
3/10/2010 4:33pm Edited Date/Time 4/17/2016 9:18pm
According to PRO-X both the 85 & 80 uses the same top end bearing.
3/10/2010 6:11pm
Are you really expecting a refund / credit on a used piston and needle bearing?
TKF Racing
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69
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12/1/2009
Location
Rockaway, NJ, USA
3/10/2010 6:26pm
project racer....

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
motofab36
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Cowden, IL, USA
3/11/2010 7:47am
Keep the bearing, it will work.

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.
TKF Racing
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69
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12/1/2009
Location
Rockaway, NJ, USA
3/13/2010 7:48pm
well it is amazing how well things work when you have the right parts. We put everything back together today and it ran like a charm.

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
Team Ideal
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9/22/2008
Location
Ste. Marie, IL, USA
3/16/2010 10:42am
Void Main wrote:
Damn, that would probably make a bit of noise. Sorta reminds me of an old girlfriend.
LMAO the noise or the slapping around inside? LOL either way I think I know a couple of those to.
Mxfan
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El Cajon, CA, USA
12/10/2012 8:49pm
Did you check the chamfer on the intake and exhaust ports? The new rings may be catching an edge on them and making a noise.
motofab36
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Cowden, IL, USA
12/11/2012 7:09am
Mxfan wrote:
Did you check the chamfer on the intake and exhaust ports? The new rings may be catching an edge on them and making a noise.
Huh did you read this story before you posted that?
slipdog
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Nor Cal, CA, USA
12/11/2012 7:58am
Thank you Motofab!

F'in NOOBS...
scooter5002
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6/6/2010
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Nanton Alberta, CA
12/11/2012 10:13am
Lol. What in thee HELL made you want to drag up a 2 1/2 year old thread to offer your mechanical genius on anyway? Nothing else newer you had a clue about? Ya, I'll bet Monsieur TKF has been sitting around wringing his hands, PRAYING you would come along to solve his troubles.
4stroke4DWIN
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texas city, TX, USA
12/11/2012 12:17pm
Mxfan wrote:
Did you check the chamfer on the intake and exhaust ports? The new rings may be catching an edge on them and making a noise.
LMAO, POST FAIL!!!!!!!!!!!!!!!Laughing Laughing Laughing Blink Read before you type grasshoppa.

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