Thread: Pro785 new rings center piston
06-10-2010, 10:58 AM #1
Pro785 new rings center piston
The shop just told me today that on my stock pro785 the center piston is a little low on compression and they recomend a new piston and rings,
I told them I would do it on a winter re-build later this year, but give me a quote on them to do it,
How difficult is it to do just one cylinder?
Should I do them all, or just do the one that is a little low on compression?
Standing by for help!
06-10-2010, 11:03 AM #2
- Join Date
- Jul 2007
- near Toronto, Canada
Is the piston damaged or worn?
Is the cylinder worn?
Perhaps it just needs new rings, and a light diamond honing
06-10-2010, 11:04 AM #3
i replaced just the mag on my sltx anditwasnot hard at all.. just take yourtime.. and do your self a favor and buy the torq extention from watcon for the base nuts... i wish i did.
how low is low?
if there is nothing wrong with the cyl or piston, just woren out rings.. just re ring and hone.. (need diamond hone correct?)
whats comp across the bored?
06-10-2010, 11:23 AM #4
Matt the mechanic didn't say anything but the center had low compression,
I had dropped it off for him to take a look at the low rpm's problems,
He was the one that tuned my race ski, and did a great job,
Gene's Polaris World in Baytown,
In fact Matt the Mechanic used to race the Pro 785's back in the day,
I will get the full report from him later,
That is why I was checking with you guys to see how difficult it is to do a ring job/piston job, and where do I buy the parts from?
06-10-2010, 12:30 PM #5
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