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compression
1-20 of 23 Results
  1. Skandic / Expedition
    Hi all, Bought a used Skandic last year, 10K km on it. It was a great deal. Good Compression when I bought it (hes a mutual friend and airplane mechanic), and this season, it had trouble starting. On a lake the other day, and going 40km in 2nd...Stopped to shift to 1st, and it died. It would...
  2. REV-XP/XS Chassis: Perf. Trail 120-129 Inch Models
    SHOULD I BUY IT??? Just went and looked at 2008 Ski-doo 800R MXZ Renegade. 3150 miles. Electric start. Reverse. New skis, new track -1.5 inch lug, 137 inch long track. It may not be what you want, but it IS what I have been looking for. Seat in great condition, everything cosmetically...
  3. REV Chassis - Mountain Sleds
    Ok, so I'm getting all my sleds ready for this winter. Got an 2007 ski doo summit xrs 800 I checked the compression 90 psi and 95 psi. I ran the sled until it was up to operating temps and held the throttle at wide open during the test. I guess my question is should i go ahead and do a top...
  4. MXZ / Legend / Summit / Grand Touring / Formula
    I am looking for a union bay head or something similar for my 583, if anyone has or knows of one laying around please get ahold of me on here or my email, I know its a long shot..... my email is [email protected]
  5. REV-XP / XM Chassis - Mountain Sleds
    I recently just bought a 2013 skidoo summit 800 etec and tested the compression and both cylinders are at 130psi the sled has 1800 miles on it should I be worried about that or run it? I believe the normal compression should be around 150psi. Also don't know if I checked the compression...
  6. Race Sled Classifieds
    600 mod head high comp head. Done by Trygstad or Crank Shop I believe. $125obo
  7. MXZ / Legend / Summit / Grand Touring / Formula
    I was wondering what would be good compression for my 97 F500, I have the shop manual and I couldn't really find anything. A lot of people say 120 psi, but I am wondering what it should be for my sled considering it is a 494.
  8. Mach Z RT and MXZ 1000 SDI Models
    Hi Guys, I have an 06 summit 1000, it was running great and then the rod bearing ceased and took out the piston, engine case ect.. I started to rebuild it through the summer, got a new crank from ski doo and I used wiesco pistons and I got a used set of cases. put it all back together and in...
  9. REV-XP/XS Chassis: Perf. Trail 120-129 Inch Models
    OK DOOTALK. Please help. I have a 2012 600 etec. Sled suddenly would not run over 7000 rpm. Starts hard, requiring me to use full throttle to get it to start. Then it seems to idle ok at 1200 rpm, although it does sound a little rough. On trail, it accelerate fairly well, but if you just...
  10. MXZ / Legend / Summit / Grand Touring / Formula
    Hi All, Been doing some reading on the forum about different sleds and am looking for a good reliable sled for me and my dad or me and my girlfriend to use ice fishing. Found a nice 03 Grand Touring for $2000 but after doing a compression test the numbers are pretty low - 95psi. This was done...
  11. Sledding - General Discussion
    Nice Engine Compression Ratio (CR) Calculator. http://www.csgnetwork.com/compcalc.html To figure out a 380HO 11.2cr Compression versus the standard 9.6cr.
  12. Race Sled Classifieds
    F/S: 600 factory mod race head with H/C domes. Near perfect condition!! Open to reasonable offers!!
  13. REV Chassis - Performance and Trail Models
    Hi, It appears the clutch side is running alittle lean, not sure from what. Checked compression on clutch side it is 140. Other side is 130. Anyone know what stock should be. It appears motor was rebuilt by previous owner as it has wiseco pistons. Took of air box, cleaned carbs, looking at...
  14. Vintage Ski Doo's
    What Compression, does the Standard 377/380 use? Was there a Low Compression Head, and a High Compression Head, maybe for the Mts? Did they ever make a Fuel Injected 377/380? Was the 377/380(62mm x 61mm) 368.8cc ever called something else? Thanks Rich
  15. Sledding - General Discussion
    I recently had a guy looking at a sled i had for sale and he had brought a compression tester along and wanted to check the compression. No big deal i said, So we pull the plugs and go through the compression testing procedure. Compression read 90PSI Both sides. I'm like What the hell? It was...
  16. Race Sled Classifieds
    I am selling the mod kit off of my 2011 600RS. This will fit years 08-13, good condition, runs on 114 octane, includes twin pipes, mod air intake and support, mod ecm, high comp domes, 3gal aluminum gas tank and seat support, and jets. PM or text 647 444 7220. Thanks, Russ.
  17. MXZ / Legend / Summit / Grand Touring / Formula
    My son has a 2000 mxz 500. The compression is 90 on both sides cold, 100 on clutch side and 90 on chain side when warm. I had to change the carb on the clutch side because one of the pin holders that held the float broke. He also tipped it over last winter. He tried cleaning the carbs himself...
  18. Mach Z / Mach 1 / Formula III Triples
    I've got a Formula III that I will be running next year in an oval racing class. The class does not allow any porting, but it doesn't have any limits on what thickness base gasket you can use. Race fuel can be used in the class. I am wondering if I'm better off using a thin base gasket to...
  19. Vintage Ski Doo's
    Here's my story.... I was out on the trails for a full day of snowmobiling on my 1977 T'NT 340 FA. My sled was running great and I was having the time of my life! After about 5-6 hours of riding my engine sound dropped an octave so I pulled it over and then it just stalled out. I opened the...
  20. Vintage Ski Doo's
    So I finally got ahold of a compression tester, and my 447 tested 121 PSI Mag, 28PSI PTO on average for both. I did 3 tests each. What are the acceptable compression levels for this motor? I am hoping to get away with rebuilding just the one side, assuming the other is ok, but I think 121 is way...
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