Polaris 550 fan...research

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kb97z

New member
I am getting a 2010 Polaris 550f Trail Touring (for wife/child). What compression results would be considered excellent and poor. I have been researching and found 110 to be poor and 130 to be good. That sound right? I know about the 10% rule between cylinders. Anything special to look out for with this sled.
Thanks
kb
 
A

anonomoose

New member
That is a great motor and sized sled engine for someone who doesn't need to go lake racing.

It has good pep, and is very reliable...often sized/type motor in rental fleet..what does that tell you??

Wondering why you are worried about compression? Is it used? High miles?

Probably picking this up cheaply and other than some minor issues this sled should work well for you.

Polaris leaves alot to be desired regarding hose routing, and wire rubbing on stuff. Just go thru the engine compartment and check stuff out thoroughly.

Otherwise, good chassis, and strong motor without the issues of liquid...not the best on gas mileage but should do the job for you...not as heavy as the liquids either.

We often forget that not long ago, this was the engine size of the top model sleds, and forget also that in a lighter sled this unit will go a long way for cheap.
 
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ezra

Well-known member
buying a 2010 may be looking at a rental just remember verry comon in rental fleat to do spedo swaps when selling
 
K

kb97z

New member
good compression ??

I trust the guy on the rental question..Sled has 1500 miles..hopefully the miles will match the condition...I would not buy a sled without doing comp test.. I'm hoping to see 130 130 ish...110 110 I'll rethink
 
indy_500

indy_500

Well-known member
Gotta remember it depends on the gauge. kb97z what brand gauge do you have?

There are some gauges that read 20 psi lower than others.
 
K

kb97z

New member
a cheapy but I trust it..did 2 rebuilds myself and use it several times a year..I have checked it against the calibrated one at work..low by 1 psi at 145..thats my 1000sdi rebuild number:)
 
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snootbiscuit

New member
be careful guys,I've seen alot of guys get burned using compression gauges, esp. with an electric start. best to use a leakdown tester,bring each piston up to tdc and hold clutch, usually two man op. you can have small scores not show up on comp. , but usually show up on leakdown. not saying a compression is a bad tool,but if you dont use one(that you are familiar with) often enough on good units, then you may not recognize a small problem in a particular cylinder! and I always count the amount of pulls on rope to get it up to like 120 or 130! if one cylinder took 4 pulls and other took 5 or 6, then I'd be suspecting something with one that req. more. sorry for the long ramble,but I've seen this WAY too many times! I've been wrenching ,full time,on boats for 28 yrs. and I've worked for sled dealers
 
K

kb97z

New member
thanks

thanks..never got to test the poo 550f..went a different direction..wifey "just cause u getting 2up doesn't mean I'm going North" got a 04 doo mxz x 800ho w 2000 miles.. Thanks Ric! tested out at 145 149 ..can't wait to ride tomorrow
 
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