800 Compression?

[freeride73]

Just checking to see what the compression is on a 2013 RMK Assault 800?

 

[ABMax24]

My 2013 Pro runs 118lbs

I've been told 110-125lbs is considered normal, assuming both cylinders come within a couple psi of each other.

 

[dragonweld28]

I have the RK TEK pistons in mine and im getting 134 psi per cylinder.

 

[Warhawk]

all depends on the gauge.

 

[bbecker17]

Make sure to have someone hold throttle open while your testing

 

[css]

My 2011 was 105 and 110. Pistons were in great shape but had some flaking on the rings. Gonna out the mtnk fix kit in with a par head. Hoping for 130ish when its all said and done

 

[team_ktm]

I Have a 2011 pushing over 2000 miles on stock pistons, 120 a side

 

[DaltonW]

Make sure to have someone hold throttle open while your testing

What is the purpose of this? never checked like that before. Is this a fuel injection technique?

 

[bbecker17]

always just been told that's what im supposed to do when compression testing, id assume its just to open the throttle body to allow the maximum amount of air in to get a good accurate reading

 

[j335]

On my old 2012: on my gauge it was about 95psi and the dealers gauge it was 115 psi, both sides only a few psi different. Depends on the gauge...