Guests - If You want access to member only forums on HSO. You will gain access only when you sign-in or Sign-Up on HotSpotOutdoors.

It's easy - LOOK UPPER right menu.

Sign in to follow this  
Followers 0
Tyler23

compression on 600 rev

14 posts in this topic

anyone know what the compresson on a 2003 600ho rev should be?? mine has about 2400 miles

Share this post


Link to post
Share on other sites

ok well mine has 127 in both cylinders. does that mean it could use a set of rings?

Share this post


Link to post
Share on other sites

Its certainly a possibility, but so is an inaccurate compression gauge. If it starts and runs ok, I would double check the gauge before a teardown. I had over 5000 miles when I re-ringed mine but it was starting to be a bit fussy starting hot. It was down to about 130psi. Other than that it ran fairly good once running.

Share this post


Link to post
Share on other sites

Tyler, are you having any issues with starting or reverse?

I would tend to say that 135-145psi would be an acceptable range on that engine cold, but as mentioned it's certainly possible that your gauge is off.

Do you have access to another gauge you could test with to compare?

Was this cold engine with wide open throttle?

From what I have heard many dealerships were not re-ringing until 125 psi. Obviously the rings are something you will want to watch as they are a known issue on the 03-04 sleds. I think it was 05' when they updated the rings?

Share this post


Link to post
Share on other sites

every once in awhile i have to give it some throttle when warm to get it going other than that it runs good. no problems when going into reverse. and yes i have access to another compression tester i will do that tmrw.

Share this post


Link to post
Share on other sites

If you test it again tomorrow test it twice. First time run it for 30 seconds and then test it at wide open throttle. Second time run it up to operating temp (tunnel cooler is warm) and test it again. Let us know what the results are.

Share this post


Link to post
Share on other sites

ok it was cold when i first did it and never did it with it at full throttle. i will get a different tester from work tmrw tho

Share this post


Link to post
Share on other sites

ok it was cold when i first did it and never did it with it at full throttle. i will get a different tester from work tmrw tho

You definitely need to test it at wide open throttle, this would be standard. You may want to re-test cold with your tester to see what results you get.

Share this post


Link to post
Share on other sites

alright. i got a different tester today and heres what i came up with. at cold wide open it was 127&130, after running for 30 sec it was 130&135. one cylinder was completely rebuilt prior to my owning and that is the one with a little bit higher compression. so with these numbers could it use rings or am i alright??

Share this post


Link to post
Share on other sites

If you look at my post above I mentioned testing it at 30 seconds (cold) and after the tunnel coolers are warm (hot). Sounds like you only tested cold. The variance in the first numbers seems ok but the number are a little low. The second is getting a little more difference than what you want.

How many times did you pull the engine over, and did you do the same on each cylinder?

Here is a recommendation on compression testing from someone who has a good amount of experience with Doo engines:

Quote:
This is the way to do a compression test to help you determine the sate of the rings, reagrdless if your gauge is accurate or not. Start the sled and let it run for about 30 seconds and then check the compression, what you are looking for at this time is if there is a 5lb or greater difference from side to side and if there is then it is an indicator that the rings need to be replaced. next start the sled and let it run until it is at operating temps and the t-stat is open and the coolant is flowing, shut it off and check the compression now that it is hot if the compression is 7lbs ( or more ) less than when it was cold then it is an idicator that you need rings. For example the cold compression was 135lbs and the hot compression is 128lbs or less then it probably need rings and generaly if it is 10lbs less than cold it usually will need pistons also.

Share this post


Link to post
Share on other sites

oh ok i missed that part sry ill do it again tonight when i get home. i pulled it 5 times on each cylinder at wide open. but ill let it run and do it again.

Share this post


Link to post
Share on other sites

You can pull more time than that if you still see the gauge going up. Just make sure you do even number on both sides.

Share this post


Link to post
Share on other sites

yep i know it was done moving at 5 pulls for me. i know i dont have much experiance with snowmobiles but im tring to learn. thanks for all the help guys!

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0



  • Posts

    • I have been going to golden meadows lately to work my dog so far we have shot 24 birds over him. One more time at the preserve before the season starts and we are itching to get out in the real fields!  
    • Wow do the unicorns fly in your fantasy too?
    • Would you like me to put sugar in your medicine to make it taste better?
    • Unless: If no candidate wins an absolute majority in the Electoral College, the election is decided by the House of Representatives. Thus, if Johnson were to win, say, Colorado while Trump and Clinton split all other electoral votes 50-50, the House would pick the winner. Given that Trump and Clinton are the most unpopular candidates in recent history, a divided House might compromise by selecting Johnson, a former two-term (Republican) governor of New Mexico.
    • It's probably going to be late this year. I got my itch scratched at Traxlers reserve in LeCenter today at least so that helps but really for me the pheasant season doesn't get into high gear until after deer season. Normally the first few weeks are too warm to be out a whole day with the dogs and there are too many corn fields in. By the 3rd week in November the temps have dropped and the corn is mostly out and that's when it gets better and of course first snow...... I am fairly optimistic about the bird populations this year. Obviously the rain we had was a wildcard and it's hard to say right now how that has impacted populations but there was a good group of birds that carried over from last season and the winter didn't take too many.
    • You sound like Dingle when someone spells isn't without the apostrophe.  It's like he can't even comprehend the sentence.
    • I'm saying that the people get what they deserve and that includes us, you all and me too.  As one of the characters in catch-22 said.. "They can do anything you can't stop them from doing".   And we have allowed the Clintons, a pair of crooks from the git go, to gain control of the Democratic Party, with a brief hiccup from Obama who only got to congress by getting a machine judge to release his opponent's sealed divorce records.  And we allowed the Republicans to leave in place a setup that encouraged every doofus that could rub two nickels together to get in the race.   Michelle Bachman?  Rick Santorum?  Rand Paul?   and of course Donald Trump....   Throw ten or 20 of them on TV about 50 times and see what happens.  And we all mostly just ignored it so the celebrity with the media skills got the nod, because he articulated the rage and disgust of a significant part of the voters, and he didn't have to rely on contributions to campaign.     Now we are being told, in the words of La governor Edwards supporters.."Vote for the Crook.  It's important." So, yes we deserve what we got.  Now the decision is which of these two will do the least long term damage to the country.   Maybe Jill Stein or Gary Johnson would but it ain't gonna happen, and anyway they would be jesse'd (term invented by me) by the congress like Jesse Ventura was by the state legislature after the first term since Jill and Gary have no power base.  
    • You and your back slappers bring up stuff Trump did or said in 1850...are you kidding me.   #hypocritesandfrauds
    • It sounds like you are describing a transmission slip in first gear? how many miles on it? Is the check engine light on? Have you checked the transmission fluid level and condition?
  • Our Sponsors