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Discussion Starter #1
Does anyone know the stock compression psi numbers? What is the acceptable range?

I just tested my RZR 1K piston compression, Reading 150 psi - it seems low compared to other RZRs such as the 800 and 900, but have no reference to compare in relation with the 1K stock engine.

TKS
 

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I looked through the service manual and I can't find any specs or procedures for a compression test, only a leakdown test. My guess is with the electronically controlled throttle body the butterflies are not opening during cranking which would cause a low reading.
 

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Couldn't you turn the key on, mash the gas to full throttle, and crank them over for 7-10 revs to get a compression #?
 

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Govolhg

I am not Shute how much help this is.
My xp1k turbo reads 205 psi on both cylinders, throttle fully open during test.
It is a stock engine by the way.

Here is the catch. I had the throttle body assembly off when I did the test a while back, as I was getting ready to install my billet intake manifold set up. I have not tested with everything in tact. If someone finds it helpful, I can take a reading in assembled form.
 
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