Maintenance & Technical > KX500 Original
Winter maintenance
5dracing:
Decided to check on the condition of the top end in my bike. Took a cold compression check an a hot check. Cold was 205 and hot was 175. :D It appears to have the thin gaskets top and bottom. I have about 30 hours on the bike since I got it and the guy said he replaced the piston right before I bought it.
I'm wondering how long everyone goes before a top end?
I run Amsoil at 32:1 with pump gas 93 octane.
Also wondering what brand of fiber clutch plates everyone is using?
I have steel plates.
hughes:
Steel plates are best for not leaving any debri in the engine. I just had my caes split last week and I was amazed how much grayish slushy stuff built up in the corners of the cases. this stuff was everywhere. The engine had alumn. plates I went back steel. Took some time to clean all the parts off before I put it back togther. Top end on these bikes are tough but good oil and clean clean clean clean air filters are very important. I clean my filter everyride. I run Yamalube 2-R at 32:1. It's good to inspect the top end from time to time. keep an eye on the compression or if you have time you can teardown and measure the piston and bore once a year. I think KXcamm22 got 12 years on his top end.
KXcam22:
5D,
Pardon me if I'm off base but amsoil as 32:1 sounds extremely rich. Isn't that stuff supposed to be at 80 to 100:1. I am running the DP carbon fiber plates with steel. Cam.
hoopty:
The steel plates will last longer and give more a flywheel effect. I run Amsoil Pro @ 100:1 in LL100 and have never had an issue. Also, the FAQ has the service limits for compression.
http://www.pitbull-racing.com/modules.php?op=modload&name=FAQ&file=index&myfaq=yes&id_cat=5#q15
hughes:
--- Quote from: KXcam22 ---5D,
Pardon me if I'm off base but amsoil as 32:1 sounds extremely rich. Isn't that stuff supposed to be at 80 to 100:1. I am running the DP carbon fiber plates with steel. Cam.
--- End quote ---
Running that lean on oil is that not an issues with bearings?
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