Search Results for ‘377’

So a few laps around the yard, and running good. Then it started running out of power (after a couple minutes idling). I shut it down for a couple hours, and it fires right up... I get it back to the shop. Pics are of the tank vent. Is this OEM? It seems very small (maybe .050"). The hose...

Hey got a safari 503r that ive got restored to 8/10 condition from the graveyard. I need the intake boot, between the airbox and carb but not having luck finding one. Years 1984-1988 safari 377/377E, 503, 503r will work. Also considering switching the airbox with a different model if i can find...

Hey, just picked up a 88 safari 377R for cheap. Its missing the hood, main part of the wiring harness, gas cap, and a couple other small things. A buddy of mine has a 377L or LE with a blown motor that i was considering buying to make mine complete. I see the hoods dont swap, just wondering...

So I'm working on a 1996 Rotax 377 in a Scandic. Ducati ignition system. So the engine abruptly died. No spark. Measured stator and trigger, all values were within spec. So ordered a new coil/CDI (SPI brand). Got a weak spark, now and then, so no success. Because the sled was outdoors when I...

Hey guys. I have a 87 Skidoo Safari it was my uncles and he passed and now I am restoring it and have been for 2 years now. I've finally almost got it done and I have extra connectors and no clue where they go. Anyone have any ideas. I have pictures of the connectors but I don't believe I can...

My 1993 Skandic II 377 has Mikuni carbs VM 34 428 on PTO side and VM 34 429 on mag side. What is the difference between these two carbs? Also, does anyone have info for the factory settings. Can’t find any info on these carbs.

From what I understand, the 447’s are prone to cylinder damage and its pretty rare to find replacement jugs for them. I also have heard that the 447 engines are identical to the 377 (which are a dime a dozen). Has anyone had success with puting jugs/pistons from a 337 into a 447? Is it that...

Hey guys, So I have a 1994 Safari 377 for my girlfriend, but she always has trouble keeping up with the larger sleds. I was just wondering if you guys have any ideas of what I could do to make it a bit quicker? I know I am not going to turn it into a 600, but I am just looking for anything that...

Hello all, got a 1980 Mirage II with a 377. Previous owner said sled didn't run. Took the motor apart and nothing looked terrible, except the crank seals looked like they were done. Rebuilt the motor with new seals, pistons, condensers, plug wires. Compression is over 100, both sides...

So this is happening now. I know citations are kinda going to "old news" now, but thought I'd see if anyone out there is still tinkering... A little fabrication never hurt anyone I guess eh? 1980 skidoo Citation and the short track was BEAT ! Cut it off and since I had a 4500 sitting with a...

I am currently sprucing up my 85 SkiDoo Safari 377E for my 8 yr old grandson. He looks at my sleds....[2] 04 500SS GSX's.....and always wants what is on them. I hooked up a shield heater plug and have put heated grips on as well. It is where to get power for the grips that I am looking for...

I've recently re-visited an old project. This is a school technology class project that has been in progress off & on for several years. However, I am determined to see it move under it's own power and groom some ski trails. The project started several years ago when a local community member...

anyone done a stroker crank on a 503 rotax using sections from 277 cranks? i understand that they have longer strokes than the 503s. also i read somewhere that someone made a big bore 81mmX61mm twin. could that be done with a stroked 503 to make a 721 big bore stroker? thanks in advance

how do you take the belt off a safari 377 1990 my buddy and i couldn't for the life off us soo we took out the whole motor we decided to give her a good cleaning at the same time we are doing an oil delete to the machine to what is the mixing ratio

im wondering what can i do to increase the horsepower of a 377 rotax. short of doing a tuned pipe and dual carbs, what can i do? i already plan to do that, but does anyone know anything about porting/polishing? what about milling the head/jug? how much metal can i take off? thanks in advance

Hey guys, i need some help. I have a 1987 Safari 377, it always starts first pull runs mint, replaced almost every part on the machine by now, except for the stator, cdi, and the lightning coil i believe what they call it. The machine will run for about 15 mins of driving until it gets warm...

Hey out there, smarter people than me, I was hoping this wasn't the case, but after being a good little boy and doing some reading in the forums here I've come to the conclusion that my crank bearing is shot. When I had the engine out i didn't notice any grinding or wiggle in the shaft but I...

looking at buying a 1990 safari l. it has a brand new track, the seats a little ripped, but it has a blown top end. everything is there. the guy wants $250 is that a good price?

looking at doing a cdi conversion on my 503 rotax. it is from a 1980 ski doo everest 500. i have the ignitions setup from a 377 from a 1990 safari L. what is involved in doing the conversion? i have access to a full machine shop, so I doesnt matter if i need to modify stuff. i also have the...

Hey everyone, brand new to this site and hoping to get some great advice. I have some questions regarding a motor swap that I'm planning to do on a 1991 Skidoo Safari. I'm swapping the 377 out for a 503 that came out of a 1980 Everest. The 503 is a single carburetor model and I'm wondering if I...