Womp womp, the head leaked externally and possibly internally after assembly. My father is picking up a used oe head today. Will report back. We did have it running, but not enough to really make a judgement call.
Womp womp, the head leaked externally and possibly internally after assembly. My father is picking up a used oe head today. Will report back. We did have it running, but not enough to really make a judgement call.
Comparing to stock makes you appreciate the work that went into this mod for minimal gains. In the future I may try an save the hotrod head once again.
Why is this thing loading up with fuel at low rpm on the pto side cylinder ? Maybe I'll just drop the needle a notch and see if it cleans up.
Then I find this!
The mythical variable hight needle!
Today's test ride was a real roller coaster, with the needle in I figured I'd better at least pull the jets, the main was clean and someone had up sized it probably due to past mods. The low speed however was plugged up. Some cleaner and compressed air made it right and I did a quick spray down of the passageways while there. Did the same on the mag side cylinder and found similar jump in jetting. I will probably drop at least another notch on both needles next time there. It's still soft down low. But I did take the sled down to the river , found the tach to be inop (which sucks next time I'll bring my little one). Nailed it once and it started pulling hard once on the pipe, let off and it shut itself down with a clunk, I went to pull the rope and found it locked solid ...my father pulled up on my touring sled and I told him to get the tow rope .
I was sure the crank had piled up...
But when I went to remove the belt I found I could turn the motor over from the clutch , that's when I found the clutch had jammed itself open (one of the rollers is square instead of round) . Belt must have just been warm enough to be sticky and drug the motor to a stop.
A well placed whack released the sticking weight and I limped it back to the garage . Comp test shows great improvement on the pto cylinder (up to 125 ) and mag side a hair over 130. Decent number considering used pistons and some pretty real cylinder wear.
Time to learn to rebuild a clutch , I'll install a lighter spring and weights while there. I want this thing to launch violently. Skis to the sky!
This should give you a pretty good idea of what you are getting into. Looks pretty easy aside from the tools you'll need to buy/borrow or make.
I'm rebuilding a clutch in an Arctic Cat this week.
In reply to adam525i :
I had reason to believe that Nutter may be the man.
Now I know what I'm watching on lunch.
This got semi stalled as I thought I had a line on a cheap used clutch but the deal fell through. I'll order rollers , bushings etc tomorrow . Going to try rebuilding what I've got.
Well poop!
No use rebuilding this one. That crack isn't supposed to be there .
It was a slow afternoon at work since it was a storm day so I pulled rank and took the weights and spring out of the cracked clutch and put them in a good used donor clutch. I don't believe the spring and weights are stock...but we'll see how they work before spending anymore money.
We're getting somewhere now, almost time to rip out the donors heart to make the rad red sled breath fire!
The heart transplant started today. Neither engine plate would work without modification But we did mock up the motor in the chassis several times . Got it close enough to get measurements for the plates and for me to realize I'll probably have to take a chop saw to the exhaust just a bit.
I'd have a hard time pulling two working sleds apart while there's snow on the ground, hope you get it done quick!
In reply to adam525i :
The 700 has skid issues, the 440 motor came out for crank seals and needs a flywheel.
That and I'm super fortunate to have this as an "adult sled" and have been getting out 1-2 times a week.
Plus the longer I ran the black one the more I would want to save it, and it can't be registered because the papers are missing . So best rip off the bandaid .
I can't weld aluminum so this addition to the old motor plate will need to be welded by someone else, fortunately I know a guy.
To do:
Get motor plate welded and re drill 2 holes for mounts.
Cooling system needs some couplers and new hose routing.
Exhaust brace (this new "silencer " isn't going to live up to its name).
Modify airbox to fit
Check wiring.
That thing is going to be a weapon when trail conditions are just right. I got to spend the morning flying around on this 93 XCR 440, it was so much fun through the tighter trails in the forest, not so much on the rough stuff though.
In reply to adam525i :
I couldn't do what I'm doing to an xcr 440. They are just so good, but an Indy 440 with 115hp should be fine.
I took a few minutes to pilfer the front fox shocks from the donor, and the track, and the xc10 skid for a later upgrade , unfortunately someone replaced one of the rear fox shocks with a generic . Suspension and lighter skis will be phase 2.
I love all of the 'old' iron in this thread. My first real sled was an XLT that my uncle put an EDGE skid into... That sled was dialed. My uncle still maintains that if he had a life or death race between points, he'd grab the old XLT over his new ski doo, but that might just be whiskey talking, ha.
In reply to golfduke :
I was out one night a couple weeks ago, it was about 15 below freezing, trails freshly groomed and rock hard. Going through a twisty section thinking, a 90s slow slung sled would kill at this.
For an hour or two the old sleds are great, if I'm going all day I'll take my touring barge .
I don't know if I'll get time to work on it this weekend...but progress is progress.
Motor is in and solid, exhaust is permanently installed and braced.
Next up air box and coolant lines.
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