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130 PSI + . Lower than that, start thinking about some new rings. If its below 100, do it now.
 

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Discussion Starter · #6 ·
150 is what my zr900 was too for good comp just wasnt sure if it was the same i will check fri am it starts fine second pull just want to check
 

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Make sure they are within 5psi, side to side, that's the biggest thing.
 

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Discussion Starter · #9 ·
137-38 clutch side 133-135 exhaust side think i should do rings now or get the season and do it in the spring?
 

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I'd run it. When it gets below 115 psi, then I would think about it. You could try a different gauge also. See it changes any.
 

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That's less than a 5% difference. I sure wouldn't worry about it.
 

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900modman said:
this one is a brand new one but i double checked each side 3 pulls then lookked at reading
Try it again..

This time, pull it till it stops moving the needle, that's the max compression.. Your arm gets weaker each pull, so it will vary in strength each time.
 

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I normally do 6-10 pulls,
 

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Run it, that fine compression, wait till ito closer to 100. As long as they're close, theyre good.
 

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Discussion Starter · #19 ·
just pulled till no more 145 exh side 148 clutch side i am pumped this is good i was a little nervous it says 10,0000 miles but when i git it the mph was reading 120 all the time so real miles are unknow i fixed the spedo pick up and now it reads correct at idel
 
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