compression??? on 08 D8 with new 2010 motor

[t stone]

I just got my sled back from my dealer. Polaris just warrentied the motor for the 3rd time. They put a 2010 complete long block it in. I have put approx. 50 miles on it for break in. Today I checked the compression on it and both cylinders are at 95lbs. Seams low to me , can anyone tell me if that is ok or to low.Thanks

 

[AKSNOWRIDER]

I just got my sled back from my dealer. Polaris just warrentied the motor for the 3rd time. They put a 2010 complete long block it in. I have put approx. 50 miles on it for break in. Today I checked the compression on it and both cylinders are at 95lbs. Seams low to me , can anyone tell me if that is ok or to low.Thanks

thats about right..2 things ..first as the rings seat it will gain some.. second..because of the agressive porting and port heights it wont show great compression, especially with the lower compression 10 head..it will make power though...

 

[95RXL]

Yep. That's normal for the update so I've heard.

 

[dub]

After brake in mine is 110 psi @ 1,200', cold motor.

 

[powerstroke 350700]

Mine is a 2010 D8 115 & 120 At 300mi

 

[DragonSlayer1]

90's

Mine was 90 on both sides on a warm motor after 250 miles. I put Brad's Head on it and It bumped it up to 115. I'm really pleased with it.

 

[champyfz450]

Mine was 90 on both sides on a warm motor after 250 miles. I put Brad's Head on it and It bumped it up to 115. I'm really pleased with it.

Have you noticed much of a power difference with the power addiction head? What comp ratio did you go with?

 

[OLD GOAT]

what dealer did yout update?

I am having warranty issues with Polaris, could you please tell me which dealer did your update, I need to get a hold of them. Thanks