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Cat's new 800?

snoluver

Well-known member
Lifetime Membership
Anyone else thinking the new jugs, new pistons and new crank may have more to do with all the unexplained seizure problems than with simply makeing more power? Just a thought.
 
snoluver

snoluver, guess you will have to enlighten me with your comment. I am not aware of any seizure problems, maybe your mixed up on your brands. Rm
 
get educated. the 07-09 800 is the same motor. The 09's had a few seize problems on stock sleds, very few. It usually happened around 6,100rpm right before the power valves open and gets real lean and causes a over expansion seize, like a cold seize. Most think it is a tolerance issue with quality control. All the ones I've heard of where fixed and never did it again. My 09 m1000 did the same thing second ride with 57 miles, 6 miles in at 6000 rpm on the trail and sled died, started it back up and road it all day with out any more problems, but it looked like a could seize. I was riding with the dealer and he had it fixed by friday the next weekend and runs as good as ever,:D may also have something to do with break in. Not something I would worry about.

The New 2010 800 is all new and not tested by the public yet but will be as good or better and is going to stomp the competition. There will be a lot of pis$ed off doo and poo guys this year.
 
The New 2010 800 is all new and not tested by the public yet but will be as good or better and is going to stomp the competition. There will be a lot of pis$ed off doo and poo guys this year.

The 800HO will surprise the new owners not to mention the compitition! It should prove to be a great year!:D I'm excited and I will be riding my old '08!:face-icon-small-ton
 
Wyoboy1000's post is exactly what I am talkingt about. The same thing happened to mine, 09 bone stock. I think there are quite a few out there with this problem. I am refering to the 2010 motor and wondering if the changes made are a result of this issue.
 
the 1000 is being replaced with the new 800 after 3 years and 3 or 4 efi updates and a butload of baked engines.jmo.its looks to me like they just couldnt get it right.to big of pistons or goofy efi for the average rider?seems like if you constantly pump the throttle or use a fuel controler,they run great with no problems.so bottom line is,they had to put out a 800 with more power to replace it.dont know if the 2010 800 pistons will stick.but we will soon see.just dont hold the throttle at one spot.pump it like a parking lot racer:)
 
Last edited:
Wyoboy1000's post is exactly what I am talkingt about. The same thing happened to mine, 09 bone stock. I think there are quite a few out there with this problem. I am refering to the 2010 motor and wondering if the changes made are a result of this issue.

there where no changes made on the 09 so the new design would not have anything to do with the problems of the 09 and as I said no one knows on the 2010. I'll bet there where less than 2% of sleds that had this problem.
 
M8's

As far as a M8 piston problem out of all the ones I sold I only had one that had any issue and it was an 09 due to improper break in and we started doing cats break in more thorough and had no more issues.It is hard to do this you think you are going to melt it down.


4. Slowly vary the engine RPM and throttle position
gradually from idle position to a maximum of
6000 RPM until the Coolant Temperature Warning
Icon stays constantly lit while making sure not to
exceed 6000 RPM. Continue varying the throttle
and RPM for an additional 1-2 minutes.
NOTE: Make sure to lubricate the slide rails with
water if you use water it will not over heat like they want or other appropriate coolant/lubricant to prevent
melting of the wear strip.
5. Allow the engine to cool to ambient temperature
(at least 30 minutes).
NOTE: Repeat steps 2-5 at this point.
6. As part of the standard operating procedure, operate
the snowmobile during the first 1 to 2 miles
under 6500 RPM to properly warm the engine
prior to extended wide-open throttle use.
 
Over heat

To get a sold over heat light is insane but that's what they want. Not blinking sold and you can not get that with water hitting the coolers. Then with the extra oil it smokes like a mother but works. It is suppose to seat the rings better too.
 
Thats what I thought, and if all the dealers where doing this break in I doubt any one would have had this problem because if they where going to seize they would have done it under break in.
 
so to get this straight all dealers were to break in all the m8's this way?

not sure if my dealer did this but i have 1200miles says it is fine, no problems, hiccups or bumps in the road, except those pesky belts, i think with all your help from this site i have narrowed down the problem here, should be a simple fix for me.... (belt overheating)
 
As far as a M8 piston problem out of all the ones I sold I only had one that had any issue and it was an 09 due to improper break in and we started doing cats break in more thorough and had no more issues.It is hard to do this you think you are going to melt it down.


4. Slowly vary the engine RPM and throttle position
gradually from idle position to a maximum of
6000 RPM until the Coolant Temperature Warning
Icon stays constantly lit while making sure not to
exceed 6000 RPM. Continue varying the throttle
and RPM for an additional 1-2 minutes.
NOTE: Make sure to lubricate the slide rails with
water if you use water it will not over heat like they want or other appropriate coolant/lubricant to prevent
melting of the wear strip.
5. Allow the engine to cool to ambient temperature
(at least 30 minutes).
NOTE: Repeat steps 2-5 at this point.
6. As part of the standard operating procedure, operate
the snowmobile during the first 1 to 2 miles
under 6500 RPM to properly warm the engine
prior to extended wide-open throttle use.




Steps 1-3?



-
 
The New 2010 800 is all new and not tested by the public yet

Except for guys that got to take demo's to the mountains late last spring. Heard the power is really awesome, but it will never be up to where the 1000 is because of the difference in torque.

Snowmobiler, there are many 1000's out there that haven't had any issues, I suggest you get educated. The 1000 is a great sled, in my opinion.
 
Snowmobiler, there are many 1000's out there that haven't had any issues, I suggest you get educated. The 1000 is a great sled, in my opinion.

they are a great sled.thats why i have one:)even though im on my 4th engine you cant beat the power,but every year they come out with a new efi update along with more stuck engines.how long will they keep replacing engines?ill guess 2010 if the new 800 rips,since they only have one model 1000 this year.
 
thats because there is still a lot of 08 m1000's still on the floor that dealers cant get rid of. right now AC needs the 1000 the high hp helps even out there emissions to hit the standard. Plus 80% of the poeple I ride with have one.

4 motor rebuilds is operator error if you ask me unless you are putting over 5000k on before rebuild.

dollar for dollar there wont be a m8 out there that will beat a piped m1000.
 
If you really need it 1-3 :)

1. The dealer must ensure the first tank of fuel is
premixed at a 100:1 fuel to oil ratio.
2. Check the coolant level and fill if necessary (see
Operator Manual or Service Manual for instructions).
3. Elevate the rear of the snowmobile on a secure,
shielded jack stand.:)
 
M8

mmsports do you have any idea of what temperature the engine reaches with this break in proceedure and does arctic cat recommend this proceedure for the 2010 M8.
 
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