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Troy86250r
12-10-2001, 09:34 PM
I have an 86 250r and it has the original top end in it. I was looking through the manual and it says to replace the piston and rings every 30 hours. Is this true or can I get by with more? The guy I bought it from said it only had 25 hours on it when I got it (it sat in storage for 14 years), and I have put about 5 or 10 hours on it so far. It has good compression, and it starts secound kick every time. Should I replace it?

4punksdad
12-13-2001, 07:33 PM
I have always said.........if it aint broke, don't fix it.

Chef
12-13-2001, 08:40 PM
Originally posted by 3punksdad
I have always said.........if it aint broke, don't fix it.

Exactly....but the piston and rings should last more than 30 hours...

The400exExorcist
12-16-2001, 08:51 PM
yeah...keep it....when you start losing compression....then its time for a new piston/rings

Troy86250r
12-17-2001, 07:17 PM
Thanks for the replies. I still dont know what to do. I have had people tell me to replace it and I have had people tell me not to replace it. I might just replace it just to be sure.

Chef
12-17-2001, 10:06 PM
if you have/can find a compression gauge thing to test the compression, test it, and see if its too low. when its low, you need to replace the stuff

The400exExorcist
12-18-2001, 03:23 PM
Yeah...thats probably the only way to tell how much compression you have in your cylinder....it should say in the manual how many psi's should be in the cylinder