2009 Summit 800R-Compression test. What should it be??? - REV-XP / XM Chassis - Mountain Sleds - DOOTalk Forums

Jump to content

 






Photo

2009 Summit 800R-Compression test. What should it be???


  • Please log in to reply
4 replies to this topic

#1 Ctown47

Ctown47

    Advanced Member

  • Members
  • PipPipPip
  • 64 posts
  • Gender:Male
  • Location:Labrador City, NL. Canada
  • Sled:2009 Summit 800R 50th edition

Posted 10 January 2013 - 02:01 PM

Hi,
I'm doing a compression test on my 2009 Summit 800R for the first time. Wondering what the compression should be in each cylinder? Also do you do it with the engine hot or cold. Any info much appreciated!!

#2 treeboy

treeboy

    Advanced Member

  • Members
  • PipPipPip
  • 730 posts
  • Gender:Male
  • Location:West Kootaneys BC
  • Interests:Being in the mountains near everyday.
  • Sled:Too many

Posted 10 January 2013 - 06:57 PM

Depends on your elevation

#3 BDA

BDA

    Advanced Member

  • Members
  • PipPipPip
  • 628 posts
  • Gender:Male
  • Location:Kenai, Alaska
  • Interests:anything offroad
    PM me - lets RIDE!
  • Sled:13-800 XM,11-800e-tech 154, 10 800r 154

  •    

Posted 10 January 2013 - 07:08 PM

Every compression tester will read a little differently

Do it with sled cold and warm

Make sure u have pulled it through several times before starting so there is some oil to help seal rings as when running

Pull through compresion at least twice so it pumps up (2 to 3 compresions in that cylinder)

Dealer said 145# at sealevel for my etech - still in break in
A good day = Riding 100 miles without seeing an improved trail.

#4 treeboy

treeboy

    Advanced Member

  • Members
  • PipPipPip
  • 730 posts
  • Gender:Male
  • Location:West Kootaneys BC
  • Interests:Being in the mountains near everyday.
  • Sled:Too many

Posted 11 January 2013 - 11:48 PM

Just got back to my computer, not using my phone.
As I said before elevation will give you different readings. 150psi at sea level (I have herd the r's are 150psi at sea level), will be less at 6000ft there is most likely some math formula for it.
At 1600ft at 115psi or around 3000 to 3500km at most i'd redo a top end.
The X ski doo team mech that taught me would do at least 8pulls to 10 cold than hot. But do all your pulls the same at wot. When you do your hot pulls make sure its good and hot, you tunnel cooler should be hot for your best result.
Take a look at dynamo joe web site, he has a really good post on there about compression and engine fitness.
Hope this give you a good start.

#5 TBLOOMA

TBLOOMA

    Advanced Member

  • Members
  • PipPipPip
  • 120 posts
  • Gender:Male
  • Location:chugiak, AK
  • Interests:07 summit X 800R 151<br />05 summit 600 HO 144<br />93 tundra!!
  • Sled:08 summit X800R 154

Posted 11 January 2013 - 11:55 PM

My 800R was 159psi at sea level ( did about 10 pulls )cold at the beginning of the season with 2400 miles on it




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users