Should I BUY!! Help me out!! - REV-XP / XS Chassis - Performance Trail 120-129 Inch Models - DOOTalk Forums

Jump to content

 






Photo

Should I BUY!! Help me out!!

800R 2008 top end spark plugs compression

  • Please log in to reply
36 replies to this topic

#1 jac3149

jac3149

    Advanced Member

  • Members
  • PipPipPip
  • 31 posts
  • Gender:Male
  • Location:Southern MN
  • Sled:1998 Ski-doo Formula Z 670

Posted 17 January 2021 - 11:06 AM

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 looks good, no cracks, no dents.

 

This is a two owner sled.  The guy who has it for sale said he bought it about 800 miles ago (about two years ago).  In the his first year of ownership, the water pump went out and he had it professionally replaced.  He had the receipt and it was $1,100 US dollars to repair it.

 

Took it out for a 10 min test ride.  Pulls hard through the throttle.  I never went wide open.  Didn't need to.  Fast, light, corners well.  Felt smooth and was all the power I'll ever need.

 

Got back to his house and was ready to buy.  I pulled the spark plugs and noticed that the right plug was more tan then the left plug (clutch side).  Both plugs looked dirty, but the clutch side plug was darker and more "dirty".  Then the compression test.  After 7 pulls each side, the clutch side had at reading of 105 psi and the right side had a reading of 95 psi.  I checked it again (both sides) and got the same readings.

 

Doesn't this seem low?  And of course the compression numbers don't match.  What does this mean?  

 

If it means a "top end" I don't have the skills to do that myself.  What does that cost?  I think I can buy it for around $3000.

 

WHAT SHOULD I DOO??!!??



#2 Wanna Go for a rip bud ?

Wanna Go for a rip bud ?

    Advanced Member

  • Members
  • PipPipPip
  • 189 posts
  • Sled:2016 mxz tnt 600 ho 2008 mxz tnt 600

Posted 17 January 2021 - 11:08 AM

Walk away.

Sent from my SM-G973W using Tapatalk

#3 smurfy71

smurfy71

    That's probably sarcasm.

  • Members
  • PipPipPip
  • 20565 posts
  • Gender:Male
  • Location:Odessa Ontario Canada
  • Sled:16 1200 Renegade X

Posted 17 January 2021 - 11:20 AM

Low numbers could be the tester, but the uneven numbers are an issue. Rings at a minimum, but if you go that far, might as well do the pistons. If you have a decent set of tools, it’s not that difficult to do.

When I got my first sled 7ish years ago, I lost a piston. I was ready to part it out as the shop wanted more to fix it than I paid for it. With the guidance of the members on this forum, I rebuilt it for about $400.

I’ve now done 3 top end rebuilds and replaced a crank.




Sent from the Island of Misfit Toys.

2016 1200 Renegade X

2005 MXZ 500ss

2004 600HO SDI (For Sale)
94 MX 470

 


#4 stealth bomber

stealth bomber

    Advanced Member

  • Members
  • PipPipPip
  • 13542 posts
  • Gender:Male
  • Interests:Running over snowflakes
  • Sled:2020 XRS 850

Posted 17 January 2021 - 11:30 AM

I think you answered your own question. It needs engine work and you can’t do it yourself. Probably not such a good deal. Likely would pay a shop the better part of $1000 for pistons, rings and gaskets installed. That number will go way up if the cylinder needs repair or things like carb boots. 2008 wasn’t a great year for the XP chassis from a reliability standpoint.

#5 auto

auto

    Advanced Member

  • Members
  • PipPipPip
  • 1459 posts
  • Gender:Male
  • Location:Rochester New Hampshire
  • Interests:Supermoto back road riding Bass Fishing
  • Sled:2019 MXZ TnT 850

Posted 17 January 2021 - 12:07 PM

new track @ 3150. I question that mileage especially with those compression readings. can't remember the numbers, but owned 3 of those motors, with very little loss of compression in 5000 miles. Like others have said, walk away. Good Luck !



#6 12/3

12/3

    Advanced Member

  • Members
  • PipPipPip
  • 2529 posts
  • Gender:Male
  • Location:Stonewall, Manitoba-Canada
  • Interests:Sledding, boating and cottage life.
  • Sled:11, 600 etec, 14 &15 900's, 69 Olympic

Posted 17 January 2021 - 01:10 PM

From what you have described I would walk away. If that's the sled that you want then wait and find one that that has better compression.

How did the reed boots look? If it needs boots and a top end you'd be further ahead to put that money towards a bit newer sled that has a better history.

Edited by 12/3, 17 January 2021 - 01:11 PM.


#7 Daag44

Daag44

    Advanced Member

  • Members
  • PipPipPip
  • 27752 posts
  • Gender:Male
  • Location:South Shore, Quebec
  • Interests:1973 Olympic
  • Sled:2007 1000 SDI

Posted 17 January 2021 - 01:38 PM

Walk away. When shopping for an old sled especially in a time when they are priced high, you may consider one with a blown engine and invest in a $1800 oem rebuild which has a new coolant pump and requires no major work. It is nearing a little late in the season for many to get into this kind of work, but I am not suggesting it for your case, just throwing it out there as a possibility. For an 800R, used is a gamble, properly rebuilt is a really good engine.


Edited by Daag44, 17 January 2021 - 01:39 PM.

Air/Fuel Ratio for two and four strokes
Air/Fuel Ratio for 1200 with boost
Air/Fuel Ratio is measured through emissions
Wideband and EGT
Wideband readings of Air/Fuel Ratio on a two stroke
600 SDI MY2004 Lean/Hot spot running 6900-7000 rpm @ 40-45% Throttle Opening
800R Cranking Compression
800R Oil Injection / Premix combo
800R P-TEK Electrical Troubleshooting #1 and #2 
800R Turbo
850 Center Oil line for coolant pump melted
850 Main Oil line caught fire #1 and #2
900 ACE Turbo - muffler turning red hot
1200 4-TEC Mapping
1200 4-TEC MY 2009 to 2011 Fuel Line issues that could cause a fire
Batteries
Belt Blowers: Overview of UPMICHIGANDER's and Ronn's experience
BUDS 3.3.0 won't connect to SDI
BUDS not connecting to HO or SDI - Try a CanDoo
Crankshaft runout - maximum allowable specs 
CVT efficiency - BlueMax
Deep snow intake for XP chassis
Electrical - ECM drivers for Ignition Coils and E-TEC injectors 
Electrical - Diagnoses of a failed ECM
Electrical - 30A Battery Charging Fuse Socket Diagnoses and Relay
Electrical - Relay Coil Wine
Electrical - Relay Testing
Electrical - Battery Charging Relay Diagnostic 
Electrical - Troubleshooting with BRP video 
Electrical - Solder vs Crimp
Electrical - Diagram for Fanners on page 3
Engine Break-In 
Engine Weight 
E-TEC 600HO Clutching
E-TEC Oil Pump
E-TEC Dial-A-Jet
E-TEC Electric Start troubleshooting
E-TEC Engine Management
E-TEC eRAVE position code recurring
E-TEC Stator fault codes P1562 or P1563
E-TEC Capacitor Charge Hold Test and Residual Voltage Test
E-TEC Voltage Rectifier Regulator troubleshooting
E-TEC Power Fades are not normal and can be fixed
Fuel Issues: Could new Ester type oxygenated additives be deteriorating the Fuel Sender Grommet?
Fuel pump and regulator replacement for ACE, E-TEC and SDI
Gasoline quality and storage
Bad Gas for a Two Stroke - Is it a Myth ?
GNR CVT Alignment for the G4
Grip N Rip Clutch Alignment testing
G4 Clutch Alignment, Engine Movement, Sheave Runout and Clutching
G4 850 Throttle Jerkiness solved with clutching
G4 850 Snappy throttle/clutch engagement
G4 850 pDrive tech - A question of Engineering
G4 Steering
G4 850 Tuned Pipe @ 12.6 lbs and Muffler @ 15.4 lbs vs 800R and 800RE muffler weight
Longevity - 800R E-TEC 
Mikuni o-ring for carb float assembly - Arctic Cat part# 6505-875 or from Amazon and eBay
Muffler Red Hot
Off-trail riding for flatlanders
Oil versus Fuel consumption
Pictures - How to resize and upload to DooTalk
Pictures - How to post with the correct orientation
Pipe Pressure testing on a dyno
Pipe Pressure testing from LRD (#1) and (#2)
Pipe Pressure testing results from BRP
Power Loss - How to diagnose in the field
Power at the Crankshaft vs Track - BlueMax
Power Curves: 600 HOE (E-TEC)
Power Curves: 600 vs 800 vs 850 vs 1000 vs 1200
Power Curves: 1000 vs 800 vs 600
Power curves: 800RE 2010.5 to 2016 vs 2016.5 850
Quebec/NY State border crossing
REV Gen1 Gauge Display stuck on "SCALE"
REV Gen1 Volt and Temp Gauge install
REV Gen1 electrical connectors for sensors and MPEM (Multi Purpose Engine Module)
Seafoam for E-TEC injectors
Shortblock or Rebuild?
Ski-Doo Snowmobile Tech Training
Spark Plugs cracked
Squish - The limit
Squish - A discussion on head design
Stator and Relay Diagnostic 
Stator testing for E-TEC using a T harness/Bridge
Stator testing for 1200 4-TEC
Stator Removal on page 3
Stator replacement for a 1200 4-TEC
Suspension Adjustment
Triples - Coolant Pump Assembly
Y-Pipe bolts loosening fix


#8 mark32786

mark32786

    Advanced Member

  • Members
  • PipPipPip
  • 500 posts
  • Gender:Male
  • Sled:17 "edit for bad language" kitty. 04 mxz 600

Posted 17 January 2021 - 01:53 PM

Unless it’s cheap, walk.   Dirty looking spark plugs is usually one of those motors staring to eat itself for dinner. Compression unequal only farther  pushes that thought process



#9 doodog

doodog

    Advanced Member

  • Members
  • PipPipPip
  • 2213 posts
  • Gender:Male
  • Location:Michigan
  • Sled:19 Backcountry 600R, 15 gade 600

  •    

Posted 17 January 2021 - 03:35 PM

Walk. Have you considered a 500ss? I know it’s not the power you want but you will be riding instead of wrenching. Guy I ride with had that same year sled and motor and blew it up twice before he got rid of it, under 5000 miles. If you really want the 800 maybe look for an 800 etec or at least a different one.

#10 mile9c1

mile9c1

    Advanced Member

  • Members
  • PipPipPip
  • 3300 posts
  • Gender:Male
  • Location:Grand Rapids, MI
  • Sled:Poo

Posted 17 January 2021 - 03:39 PM

Did it go into reverse ok?

#11 Daag44

Daag44

    Advanced Member

  • Members
  • PipPipPip
  • 27752 posts
  • Gender:Male
  • Location:South Shore, Quebec
  • Interests:1973 Olympic
  • Sled:2007 1000 SDI

Posted 17 January 2021 - 06:44 PM

Be careful with the 500ss/600 as many are high mileage or high number of storage seasons, so it is a hit and miss with those too.


Air/Fuel Ratio for two and four strokes
Air/Fuel Ratio for 1200 with boost
Air/Fuel Ratio is measured through emissions
Wideband and EGT
Wideband readings of Air/Fuel Ratio on a two stroke
600 SDI MY2004 Lean/Hot spot running 6900-7000 rpm @ 40-45% Throttle Opening
800R Cranking Compression
800R Oil Injection / Premix combo
800R P-TEK Electrical Troubleshooting #1 and #2 
800R Turbo
850 Center Oil line for coolant pump melted
850 Main Oil line caught fire #1 and #2
900 ACE Turbo - muffler turning red hot
1200 4-TEC Mapping
1200 4-TEC MY 2009 to 2011 Fuel Line issues that could cause a fire
Batteries
Belt Blowers: Overview of UPMICHIGANDER's and Ronn's experience
BUDS 3.3.0 won't connect to SDI
BUDS not connecting to HO or SDI - Try a CanDoo
Crankshaft runout - maximum allowable specs 
CVT efficiency - BlueMax
Deep snow intake for XP chassis
Electrical - ECM drivers for Ignition Coils and E-TEC injectors 
Electrical - Diagnoses of a failed ECM
Electrical - 30A Battery Charging Fuse Socket Diagnoses and Relay
Electrical - Relay Coil Wine
Electrical - Relay Testing
Electrical - Battery Charging Relay Diagnostic 
Electrical - Troubleshooting with BRP video 
Electrical - Solder vs Crimp
Electrical - Diagram for Fanners on page 3
Engine Break-In 
Engine Weight 
E-TEC 600HO Clutching
E-TEC Oil Pump
E-TEC Dial-A-Jet
E-TEC Electric Start troubleshooting
E-TEC Engine Management
E-TEC eRAVE position code recurring
E-TEC Stator fault codes P1562 or P1563
E-TEC Capacitor Charge Hold Test and Residual Voltage Test
E-TEC Voltage Rectifier Regulator troubleshooting
E-TEC Power Fades are not normal and can be fixed
Fuel Issues: Could new Ester type oxygenated additives be deteriorating the Fuel Sender Grommet?
Fuel pump and regulator replacement for ACE, E-TEC and SDI
Gasoline quality and storage
Bad Gas for a Two Stroke - Is it a Myth ?
GNR CVT Alignment for the G4
Grip N Rip Clutch Alignment testing
G4 Clutch Alignment, Engine Movement, Sheave Runout and Clutching
G4 850 Throttle Jerkiness solved with clutching
G4 850 Snappy throttle/clutch engagement
G4 850 pDrive tech - A question of Engineering
G4 Steering
G4 850 Tuned Pipe @ 12.6 lbs and Muffler @ 15.4 lbs vs 800R and 800RE muffler weight
Longevity - 800R E-TEC 
Mikuni o-ring for carb float assembly - Arctic Cat part# 6505-875 or from Amazon and eBay
Muffler Red Hot
Off-trail riding for flatlanders
Oil versus Fuel consumption
Pictures - How to resize and upload to DooTalk
Pictures - How to post with the correct orientation
Pipe Pressure testing on a dyno
Pipe Pressure testing from LRD (#1) and (#2)
Pipe Pressure testing results from BRP
Power Loss - How to diagnose in the field
Power at the Crankshaft vs Track - BlueMax
Power Curves: 600 HOE (E-TEC)
Power Curves: 600 vs 800 vs 850 vs 1000 vs 1200
Power Curves: 1000 vs 800 vs 600
Power curves: 800RE 2010.5 to 2016 vs 2016.5 850
Quebec/NY State border crossing
REV Gen1 Gauge Display stuck on "SCALE"
REV Gen1 Volt and Temp Gauge install
REV Gen1 electrical connectors for sensors and MPEM (Multi Purpose Engine Module)
Seafoam for E-TEC injectors
Shortblock or Rebuild?
Ski-Doo Snowmobile Tech Training
Spark Plugs cracked
Squish - The limit
Squish - A discussion on head design
Stator and Relay Diagnostic 
Stator testing for E-TEC using a T harness/Bridge
Stator testing for 1200 4-TEC
Stator Removal on page 3
Stator replacement for a 1200 4-TEC
Suspension Adjustment
Triples - Coolant Pump Assembly
Y-Pipe bolts loosening fix


#12 Spud800

Spud800

    Advanced Member

  • Members
  • PipPipPip
  • 35 posts
  • Gender:Male
  • Location:Manitoba , Canada
  • Sled:2012 Mxz 800 x

Posted 17 January 2021 - 07:05 PM

Was that a cold compression test or hot? Either way they should both be equal. If you have access to a bore scope and take the pipe off. Look up the Y pipe at the piston/ rings and inspect for scoring.

#13 Renegade85

Renegade85

    Advanced Member

  • Members
  • PipPipPip
  • 418 posts
  • Gender:Male
  • Location:Grand Rapids Mi
  • Sled:Backcountry XRS 146

Posted 17 January 2021 - 07:26 PM

Those sleds are known to have a lot of motor issues. I wouldn't buy one but that's just me. 


If I had a dollar for every time I broke something and the mechanic said to me "I've never seen that before"....

2021 Backcountry XRS (It's finally here)

2005 Renegade 700

2017 Renegade 900ace (Crashed)

2018 Renegade 900ace Enduro

2019 Renegade 900ace Enduro

Legend Explorer 7x29


#14 Mill

Mill

    Advanced Member

  • Members
  • PipPipPip
  • 1282 posts
  • Gender:Male
  • Sled:2006 Rev 800

Posted 17 January 2021 - 08:08 PM

Not even a question. Run away fast.

Sent from my Pixel 3 XL using Tapatalk

#15 jac3149

jac3149

    Advanced Member

  • Members
  • PipPipPip
  • 31 posts
  • Gender:Male
  • Location:Southern MN
  • Sled:1998 Ski-doo Formula Z 670

Posted 18 January 2021 - 01:13 PM

Seller just sent me a picture of a receipt.  He had the water pump professionally replaced about 500 miles ago.  At that time, the shop had a compression tested at 130 mag side and 135 pto side.  Aren't these numbers supposed to match?  Wouldn't the shop have said something to the seller at that time?  I never checked reverse when I gave it a test ride.  If I have time this afternoon, I may go back and look at it again.







0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users