Pistons? - Snowmobile Forum: Your #1 Snowmobile Forum

jeffcool326 · 11-10-2012, 09:04 PM

I need to do a topend rebuild on a 2005 SkiDoo 800 HO. Does anyone have any suggestions on the type of pistons to use (OEM, SPI, Wisco, etc). Thanks Jeff

**RJ Gleason** · 11-11-2012, 05:07 AM

OEM would be best fit.

jeffcool326 · 11-11-2012, 05:19 AM

Thanks RJ........The sled has 11,500 miles and has medium compression in both cylinders. Still runs but not at its peak, If you know what I mean!

**kccats** · 11-11-2012, 06:50 AM

I just priced a set up for Renegade! Have you had issues with the carb flanges?

Renagade · 11-11-2012, 11:57 AM

ya i was suprized how bad the carb
boots were and it didnt blow up.
it still has 138psi and runs great.
how many miles do u have on yours?

Kemo · 11-11-2012, 12:28 PM

ive had great success with kimpex/spi and wiseco... can't go wrong with either.

jeffcool326 · 11-11-2012, 03:40 PM

Think I'm going to go with OEM......I can buy a top end kit for this for around $275.........And kccats that is a yes on the carb flanges. I had to replace them about 2 yrs ago........ I have alot of shop work to do now. I just bought 3 skidoos and a 4 place trailer that have been sitting for about 4 years. I love it when there is tinkering to do in the barn...THINK SNOW!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

**smallengineguy** · 11-11-2012, 03:47 PM

OEM is the best. Put in it what came out of it!

jeffcool326 · 11-17-2012, 06:38 AM

OK so i tore down the sled and i have bigger problems then what I thought...lol. I have a pic of the piston I was just wondering if anyone know what caused this. The cylinder is junk...unrepairable....But the pic is the clutch side-exhaust port piston.

**smallengineguy** · 11-17-2012, 06:40 AM

I assume that's the exhaust side? That got H-O-T!!!

jeffcool326 · 11-17-2012, 06:57 AM

Yes that is the exhaust side.....Way to HOT!!!!!!! Know of any good places to get cylinders from besides ebay? website maybe

ridgerunner · 11-17-2012, 07:12 AM

i went though mcb performance for my cylinders and pistons on my mxz. i had great service and the parts were great. they have dual ring piston that worked amazing. a lot of skidoo guys also rave about rktek.... but if you have had good luck with the oem then you can't really go wrong.

Kemo · 11-18-2012, 09:14 PM

Isn't there a sleeve that can be removed and replaced? It should be a lot cheaper to re-sleeve it than to find a new cylinder.

jeffcool326 · 11-19-2012, 06:06 PM

I just did a crap load of research on this. There is no sleeve on the 04-07 800ho they are plated. I just ended up buying a re-manufactured cylinder. Wasn't to bad for $200 plus core!!! Think Snow!!!!

Grudman · 11-19-2012, 06:26 PM

Jeff,

the snow is coming look for a blizzard week of december 3rd!

I called it first

jeffcool326 · 11-19-2012, 07:27 PM

Going to hold you to it Grudman!....lol

Kemo · 11-19-2012, 07:30 PM

Quote:

Originally Posted by jeffcool326

I just did a crap load of research on this. There is no sleeve on the 04-07 800ho they are plated. I just ended up buying a re-manufactured cylinder. Wasn't to bad for $200 plus core!!! Think Snow!!!!

they should still be able to sleeve it though, or at least i would imagine so. was the reman sleeved by chance?

jeffcool326 · 11-19-2012, 07:39 PM

no it is replated!!!!! I could be wrong but reading up on them it said that all HO cylinders from 2004 to 2007 were non-sleeved....

Kemo · 11-19-2012, 07:48 PM

What I meant is if they are reman cylinders, companies DO sleeve them and replate them.

https://www.denniskirk.com/cylinder-...re.pfl1267.prd

See fitment tab.

**kccats** · 11-19-2012, 08:42 PM

Don't sleve! Send your cyl to US Chrome!