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post #1 of 4 (permalink) Old 11-20-2012, 12:54 PM Thread Starter
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how do i tell piston size

I have a 89 650 indy and I just pulled the engine for new seals. While I have the engine out I want to put in new rings too but are unsure of the piston size. They read .50 mm on the domes along with 2346P2. The cylinders read from 67.95 to 68.1mm with my cheap caliper. So how do I know what size rings to order. Not sure of stock size, I'm at work and my manuals at home. Thanks
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post #2 of 4 (permalink) Old 11-20-2012, 05:04 PM
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The .50 means it's bored .020 over stock. 67.75mm should be the stock bore.
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post #3 of 4 (permalink) Old 11-20-2012, 11:57 PM
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2346P2 is a Wiseco piston. The rings you need are part Wiseco number 2687CD

They all start turning to junk as soon as you pull the rope...
www.snowmobileswapmeet.com
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post #4 of 4 (permalink) Old 11-21-2012, 04:30 PM Thread Starter
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Thanx guys I spent all summer on my banshees now I gotta get back into sled world. Had a dune port done on one and it was night and day, think I might look into porting the triple too
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