'Tis the season

[jestal]

Should have been at this sooner but now is better than later.... Time for pistons and rings, new crankcase seal, rebuilding all four shocks, hyfax, lube EVERYTHING, rebuild recoil starter, bleed the brakes, various other cleanup/rebuilds/improvements/etc and general tidying up.

Lots of service needed after 4 seasons and 10,000 miles.....

So, what prompted all this was a little trouble starting this ***** when it is below -20 F and the knowlege that these tend to pit the rings and loose compression over time and miles. Kind of like knowing about tickers....if you catch my drift..... Here is what 800 cc's looks like in a two stroke twin.

Get it apart this far and find out that the "problem" is indeed present and accounted for

See the pitting on the two rings? These style pistons have only one ring one each piston and each was starting to show the pitting. The ring is a steel ring with moly filling in the middle. The moly filling is what is flaking out due to heat and compression...and probably a little incipient detonation down in the crevice volume. On a scale of 1 to 10 with 10 being bad these are pitted about a 4 or 5 I would say. Bad pitting whre you can see it but only present in a few locations around the ring, not all the way around. I've seen some that had most of the moly pitted out all the way around.

Time for the "new" latest and greatest pistons and rings from Skidoo. Not a warranty item but they have at least recognized the problem and released improved pistons and chrome rings that will not pit.

Hmmm.....wonder if it cut the head .030 if it would make more HP.....?????..... And those ports do look awfully rough and nasty.... LOL

This is how to not miss your FJR during the winter!!!

 

[boogahboogah]

Interesting post. Thanks!

 

[twowheelnut]

Heyyyyyyyy, wadaminute... What, no beer fridge? Sheesh! Light weight.

:lol:

 

[dcarver]

Heyyyyyyyy, wadaminute... What, no beer fridge? Sheesh! Light weight. :lol:

Please forgive my little Southern Santa Barbara friend... He has no idea that the white fluffy stuff outside the shop is natures little 'fridge for them brewskis...

 

[jestal]

You have to drink the ones left outside real fast so the end of the case doesn't freeze.

The man cave fridge is in the other corner........

 

[dcarver]

You have to drink the ones left outside real fast so the end of the case doesn't freeze.
The man cave fridge is in the other corner........

Oh, sorry, you're talking beer. I was thinking Whiskey.. doesn't freeze as quick... :blink:

 

[kaitsdad]

Ya know, Jestal,

That has got to be the funniest looking motorcycle I've seen in a while :blink: - is it a dirt bike? :huh: And doesn't that 'track' like thingy get in the way when you're leaning into turns?

 

[Bounce]

This is how to not miss your FJR during the winter!!!

miss? what is this "miss" thing? i just walk out into the garage, start it up and go for a ride.

 

[radman]

A little dremel work, Boyeson reeds, lean the carbs a notch, expansion chamber.............jeez, I love 2-strokes.

 

[donaldb]

I'm w/Kaitsdad here...........I have often wondered what those things look like after you take the bottom hull off :blink: I guess they just beat the water into submission. Those Japanese fooled us all claiming they were jet propulsion......I say sue'um

 

[twowheelnut]

Heyyyyyyyy, wadaminute... What, no beer fridge? Sheesh! Light weight. :lol:

Please forgive my little Southern Santa Barbara friend... He has no idea that the white fluffy stuff outside the shop is natures little 'fridge for them brewskis...

Hey, you forget that I hail from The Great Northeast, where Nor'easters beget feets of snow. Besides, snow is only good for skiing and peeing your name in.

 

[radman]

I think he hurt himself. Short names be guud.

 

[jdog109socal]

Gitter Done ....... Snow comming soon

Jdog

 

[dcarver]

I think he hurt himself. Short names be guud.

Priceless
Jestal... No problem with the water heater and gasoline fumes? I damn near killed myself once with that situation..

 

[opt8low]

Oh the famous ring flaking that ski-doo won't fess up to. Been there and done that.

Have new 07 600sdi Renegade X sitting the garage waiting for about 6 inches of the white stuff.

Is that a Blair Morgan 03 x model?

Dana

 

[jestal]

Jestal... No problem with the water heater and gasoline fumes? I damn near killed myself once with that situation..

Yes...that would be a problem. Nothing comes into the workshop unless the tank is empty or very close to it and I am deathly afraid of having to do anything involving fumes or solvents....I try to avoid it at all costs. Even if I spill a bit of gas from a carb bowl or something I instantly sop it up and ditch the rag outside in a container. The parts washer is in another room and it is a quick step outside to hose something off with the brakeclean. Wish it were somewhere else but I have just been too lazy to move it.

I had a deal a number of years ago where I was working on my sleds in the garage on the trailer. I had the rear of one sled jacked up pretty high and gas started siphoning thru the overflow tube. In the process of letting the sled back down level I managed to pop the trouble light bulb. Not good. Instant inferno. About a quart of gas had siphoned into the tub before I notice it dripping on the trailer deck and when I dropped the sled (onto the trouble light) it poured out just as the bulb popped. Fortunately I had fire extinguishers handy. Lots of them. I think I used up about 8 fire extenguishers (most were the smaller 1 pound size with two of them 2 pounders) trying to put the fire out for good. They were dry chemical fire extinguishers and instantly knocked the fire down but then the gas would perculate up thru the dry chemical dust and start burning again. My wife almost killed me throwing fire extenguishers at me. Ever since then I have been really really careful with stuff like that. Really careful.

Ya know, Jestal,
That has got to be the funniest looking motorcycle I've seen in a while :blink: - is it a dirt bike? :huh: And doesn't that 'track' like thingy get in the way when you're leaning into turns?

Uh....you would maybe be thinking of these....???

https://www.snow-hawk.com/home.aspx

I'm w/Kaitsdad here...........I have often wondered what those things look like after you take the bottom hull off :blink: I guess they just beat the water into submission. Those Japanese fooled us all claiming they were jet propulsion......I say sue'um

NO NO You are getting confused with the devices used when the water is still soft. This device is used when the water gets hard. I does tend to beat the snow into submission, though.

Oh the famous ring flaking that ski-doo won't fess up to. Been there and done that.
Have new 07 600sdi Renegade X sitting the garage waiting for about 6 inches of the white stuff.

Is that a Blair Morgan 03 x model?

Dana

Seems that Skidoo recognized the problem to me since they have warrantied ring replacements in a lot of the 600 HO's and 800 HO's. I just waited too long I guess.... At 10K the rings probably needed replacement anyway. LOL.

It is an 03 800MXZ REV with the X package. Not the Blair Morgan replica. You could get the X package with the rebuildable shocks and the X graphics as an early order only. I took the yellow handguards and stuff off and use the black fairing with the taller shield. It gets too cold up in Canada for the stock shield for me. I like the beaver tail setup for the snow flap and am sorry that Skidoo ditched it after one year. Partly why I didn't order a new sled this year. The beavertail setup keeps almost all the snow off you and your saddlebags when riding cross country. I can see why some people liked the conventional setup but the beavertail works great for a lot of the riding out there.

You will really like your new sled. I rode last year with a friend of mine from Sudbury, Ontario, that has an 06 600 SDI Renegade. Excellent package. Amazing fuel economy on that sled with the SDI. First time in the last 12 years that I knew him that he liked a sled so much he kept it for another season!

 

[jestal]

A little dremel work, Boyeson reeds, lean the carbs a notch, expansion chamber.............jeez, I love 2-strokes.

I'm going with the VForce reed setup...they have a reed cage for this motor that doubles the number of reed petals with a double V configuration that seems to work well. Skidoo uses it on the HO series of motors. Carbs are good. With the DPM system the carbs are pretty darned close down to about -30F. The carbs are baseline jetted for -20 and the DPM can lean them appropriately at warmer temps based on signals from the ECM. It just varies the pressure in the float bowl basically to lean the carbs from the baseline setting. No one really gets much power any more out of the aftermarket exhaust parts. More noise.... but not much more power. Certainly not enough to justify the noise. I hate the noise and the production "chubby" two-into-one expansion chamber actually works well. Besides, none of the aftermarket exhaust parts that I have experience with have the durability to live for thousands of miles on the trail. Good for lake racing and drag racing but that's not my bag, baby. 10-4 on the dremel work. Some has been done and more waiting.... About the biggest gain is cutting the head and reshaping the squish area on these motors. That's next.

 

[Windjammer]

I test drove a Yamaha four stroke last winter. After that ride, I think my current sled will be my last 2-stroke. I guess I've just lost the soft spot in my heart for them.

Looks like you're having fun though - more power to ya! And that story about the fuel fire was freaky! Think I'll go get more fire extinguishers soon!

 

[Tropical FJR]

[SIZE=10pt][/SIZE]

Nice workshop!