catman1

My 2005 sabercat 500 has 4000 miles and it has 115 psi in each cylinder, and i was wondering if that is good or not, or time for a new top end

JDS

Compression readings should be taken when the motor is up to temp. with the throttle side open. If yours were taken on a cold motor, they will be lower. Also, compression will sometimes read quite a bit lower at higher altitude. As long as your compression is close to the same for both cylinders and doesn't have any unusual noise, run it.

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JD
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2001 Arctic Cat ZR500
2003 Polaris Trail RMK 550F(wife's)
1991 Arctic Cat EXT SP 550
1991 Honda Fourtrax

RJ Gleason

The correct way to get the reading is to pull both plugs, leave the ignition off, attach gauge, Hold throttle wide open and give a minimum of 3 pulls.

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Old Cat Rider


w/ Comet 108 Pro-4 clutch


80 PANTERA 500 F/C w/ Comet 102 clutch

'90 Wildcat Project in progress.

Trail Boss; Dryden to Summerhill trail.
http://www.dcdrifters.net/

Senior Deacon; F&AM Lodge# 472

kccats

I usually will give it 6-10 pulls! If indeed this is how you came up with it then yes it is time to freshen the motor! I ususaly tell people about 3500 it's about time! At 400 you may want pistons too!