Dang! I had two ‘74 Colt SS. 250 twin free airs. Installed temp gauges under the plugs, since I did a lot of bush whacking in warmer weather. Those sleds would climb anything. (One climbed ten feet up a tree leaning over a cliff. - we stopped at the top to admire the view and a sticky new belt idled the machine right off the edge!). Suspension left a lot to be desired travel wise, typical to the era. Wish I could have kept them. Still have a box of new old stock for them and all the special tools too. And you absolutely MUST have studs on those metal grousers =. Those tracks would slide sideways like a luge on a run. Don’t ask.
When putting in staples its best to put them at a 45 degree angle for 2 points of contact when it stretches. My mom did alot of recovering and taught me this
Even though I've done plenty of quickie top end jobs, in general always preferred to pull the crank out for a full clean and inspect, little bit of time and some case seals always made me feel better, even when the bearings and everything else was intact. Funny how by the late '70s those car like bodies looked so old and dated, now they seem pretty freakin' cool again! I bet you could scrounge part of an old tank or a simple bend of metal to make a tank extension and fill that gap at the front of the seat nicely. Kudos for keeping the extreme vintage alive.
Nice runner! Love the how to rebuild the brake piston! Do u have any videos on rebuilding Polaris 650 triples water pumps? Or know of any kits that might be available? Awesome channel!
We're having our vintage show today in Michigan North Dakota I'm taking the 77 Colt SS 340 and the 75 Colt 340 I haven't done anything with the 73 Colt 250ss yet
Any snow where you are? I put mine away for the season 😢I only ask because you haven’t shown any riding footage. Love what you do! Keep up the good work!
It's been horrible this year. bare ground until the middle of last week. The snow you see in the video came in mid-week. The end of the video was shot yesterday and we were already losing a lot.
Recently, I just free build a 250 motor myself. You mentioned rebuilding the car my change in the pilots in Jets, but she didn’t offer the information on the size of the Jets and you mentioned you were going to do some clutching, and just for the sake of future, hope you are going to, tell the size of the clutch weight and spring pound age thank you in advance
It's pretty easy to melt a piston and my setup might just do that on a different sled so I don't give out that info. Tune at your own risk. You can find the 1972-1981 factory service manual for free on vintagesnow(dot)com and the stock jets and clutch setup is in there.
Love these old sleds. A buddy and I have been having terrible luck with piston rings. We honed and reringed a 74 colt 250 twin and after 15 minutes of run time the rings were toast. Any suggestions?
That's an iron bore cylinder so the rings should be chrome faced. Otherwise it's a matter of getting the right finish and breaking them in properly. I'm using about a 180 grit stone for the final finish. Some might say that's too coarse, but it works for me.
I should add - you need to make sure your cylinder is round. Putting a cross hatch on a tapered or out of round cylinder is pretty useless. If you go back to the video where I honed this cylinder you can see the equipment I used. A ball hone or a weak three finger hone won't bring a worn cylinder back into shape. You might need to get it bored for the next size piston, but just finding a good used motor is often cheaper.
Thanks for watching. I looked at the instructions and that is not the case about needing to be 90 degrees. 90 degrees also makes no sense for how the calculations are done.
Well bought a 88 rxl 650 someone put a 159 track engine has been build 100 octane she a little bogge clutch setting not right and has a single pipe would triple pipes ill see what can find
Nothing worse than sending a wrist pin clip into another dimension and NOT hearing the little "ting...ting ting". Welp, that no longer exists in our universe. Get a new one.
