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Polaris: Pro-Ride 2010 and up, all models in the Pro-Ride chassis
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  #1  
Old 02-27-2018, 07:06 PM
rags319 rags319 is offline
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Default Need some advice on cylinder.

Sled is a 2011 800 Pro. Pistons got scored . Almost certain from snow injestion. Here is a pic of cylinder. I can only feel one of those lines with my finger nail barely. Took it to most reputable shop around here that I know off. He said it's not ideal but would work with no ill effects. Measured it and deglaze it for me. What do you guys think. Does it need to be redone.
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  #2  
Old 02-27-2018, 07:42 PM
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diamonddave diamonddave is offline
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Honestly, I am more concerned with how many miles are on it with stock pistons. Why? Because those loose fitting stock pistons have been hammering on those thinner (2011-2012) cylinder skirts for however long.


Check very closely for cracks. Too many stories of replacement pistons followed by cracked skirts. And then 100% of the blame has fallen on the replacement pistons.
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Old 02-27-2018, 08:38 PM
rags319 rags319 is offline
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Originally Posted by diamonddave View Post
Honestly, I am more concerned with how many miles are on it with stock pistons. Why? Because those loose fitting stock pistons have been hammering on those thinner (2011-2012) cylinder skirts for however long.


Check very closely for cracks. Too many stories of replacement pistons followed by cracked skirts. And then 100% of the blame has fallen on the replacement pistons.
I hear you there. Sled had 1300 miles on stock pistons. Put rkt drop-ins in at that time. Now has 1900 miles. Took pics of skirts to magnify them. Don't see any viable cracks anywhere.
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Old 02-27-2018, 10:07 PM
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05rmksteve 05rmksteve is online now
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Put new pistons in it and run it.
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Old 03-08-2018, 03:10 PM
raleigh111 raleigh111 is offline
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Put new pistons in it and run it.
agree!
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Old 03-10-2018, 03:52 AM
Drewd Drewd is offline
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don't deglaze the cylinders. Just clean really well with some brake cleaner and scotch brite plads instead of a honing tool.
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Old 03-11-2018, 08:34 AM
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It's going to be a risk not replacing the monoblock with brand new. But I get it, there now $1,200.

But, please make sure you replace the injectors. 2011's were problematic and have been updated. Injector location lends itself to carbon deposits on the tip's. Which then results in fuel pattern spray issues. Which then leads to issues just like you are seeing right now.

May not have been snow ingestion.
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Old 03-12-2018, 12:22 PM
rags319 rags319 is offline
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Quote:
Originally Posted by diamonddave View Post
It's going to be a risk not replacing the monoblock with brand new. But I get it, there now $1,200.

But, please make sure you replace the injectors. 2011's were problematic and have been updated. Injector location lends itself to carbon deposits on the tip's. Which then results in fuel pattern spray issues. Which then leads to issues just like you are seeing right now.

May not have been snow ingestion.
I did have injectors ultra sonic cleaned by indy specialties 4-500 miles ago which was sevel years ago that seem to cure a cutout/stumble issue. They are blue so I was under impression they were updated version. They are ones sled came with new. Maybe there is a more updated one?

Last edited by rags319; 03-12-2018 at 12:34 PM.
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Old 05-18-2018, 08:48 AM
sledtahoe sledtahoe is offline
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Default replace

Quote:
Originally Posted by diamonddave View Post
It's going to be a risk not replacing the monoblock with brand new. But I get it, there now $1,200.

But, please make sure you replace the injectors. 2011's were problematic and have been updated. Injector location lends itself to carbon deposits on the tip's. Which then results in fuel pattern spray issues. Which then leads to issues just like you are seeing right now.

May not have been snow ingestion.
call indydan and get it done right.
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