Polaris Pro compression

[sledsnowco]

What should the compression be on stock 11 pro? Mine tested out at 105 in each cylinder. Thanks

 

[Rabbi 1]

600 or 800?

 

[tdorval]

Elevation also has an effect on compression fyi.

 

[sledsnowco]

800 and I'm at 6000 ft in Colorado.

 

[AndrettiDog]

Elevation also has an effect on compression fyi.

Yes, and doesn't throttle pull as well?

 

[milo303]

Warm motor, throttle wide open

I could only get 90 on mine and the ladies 800's in littleton but each tester will read different.

How many miles you have on yours sledsnoco?

We both have 1300 and I'm putting Rk Tek kits in both before they roll again

 

[dh1]

110psi in mine. Throttle held open. Sled has 420 miles on it.

 

[sledsnowco]

My Pro has 1200 miles on it since I put rktek replacement wossner pistons in it. Cold I get 105 in each side, warm I get 110 in each side. Wossner pistons seem far superior than anything else I've ever used.

 

[jdog1]

Warm motor, throttle wide open

I could only get 90 on mine and the ladies 800's in littleton but each tester will read different.

How many miles you have on yours sledsnoco?

We both have 1300 and I'm putting Rk Tek kits in both before they roll again

I hope his kit works out better for you then some of ours did in the past. If not we will be able to tow you you home!!

 

[milo303]

I hope his kit works out better for you then some of ours did in the past. If not we will be able to tow you you home!!

Great post! Maybe if your screen name wasn't jDOG I'd take you seriously and ask about your experience

 

[milo303]

My Pro has 1200 miles on it since I put rktek replacement wossner pistons in it. Cold I get 105 in each side, warm I get 110 in each side. Wossner pistons seem far superior than anything else I've ever used.

Where at in CO are you checking it?

Have you had a chance to pull it apart and see how things look after the 1200 miles?

 

[sledsnowco]

I'm in New Castle on the west slope, I'm gonna pull it apart next week and check it out. I'm also gonna do rktek cheater head with 14.1 domes this year. Bikeman is also using wossner pistons in all there stuff with good results.. Just a FYI bikeman tests all there products on the flattops at high elevation.

 

[milo303]

Cool, please report back with your findings on those pistons! It's nice to get real world reviews with pics and such for all of these fix kits. As for me, my drop in kit is sitting in the garage so I'm balls into it already.

Sounds like you've enjoyed the pistons, that's good to hear. The lady is getting the pistons while I'm going drop in. Can't have her sled going as hard as mine

 

[Pol600]

115lbs. Each cylinder identical. engine at 100 degrees, throttle held, ~1200ft in MN. 660miles. completely stock.

 

[jwentzer]

I'm at the same elevation as Milo, roughly 4900ish, also here in CO. Stock pistons at about 700 miles with all but 150 of them being boosted, my comp tester would show 95. This was warm motor, throttle WFO, comp tester on one side and I removed the spark plug on the other.

I installed one of the popular "kits".... cylinders and pistons. I instantly went up to 105 per cylinder on a cold test. I haven't tested the new top end with a warm motor yet.

 

[jdog1]

Great post! Maybe if your screen name wasn't jDOG I'd take you seriously and ask about your experience

Gee I'm sorry my screen name offends you! It must make me a less knowledgeable person. Wasn't trying to start a bashing thread.

 

[mtncat1]

I hope his kit works out better for you then some of ours did in the past. If not we will be able to tow you you home!!

so what was your experience with the rkt drop in kits,i've ran a couple of them with good results.