Need advice about snowmobile

[carzboyz]

Hello I need a advice for my snowmobile if we can talk about snowmobile here . I own a 1993 polaris indy lite 340 and I would like to know if I can put a bigger engine in my chassis like a 500 liquid cooled with ll radiator and electronics. Does the chassis will be able to mnage with the power of this engine. Thanks you

[mopar3.0]

it could handel the power, but the amount of would be something else, running the rads would be a big feat, not to mention chanign the drice chain and sprockets. fule pump
wirring harness and so on

[Realest]

most liquid cooled snowmobiles run heat exchangers under or intergrated into the running boards of the machine.

rather than hot rod a 340 you'd be much better off selling that machine (if its running) and taking that cash and picking up something with all the parts you need.
i am not saying it is not possible to but there are tons of 500 and 600 twin machines around. trying to locate all the parts and then fabricating what you need to make it work just doesn't sound worth the work. Not to mention that you need to have the engine and gear box (primary and secondary clutches)properly aligned so you don't eat belts.

if you like to hot rod......go for it man. Who am i to tell you what to do.
340 air cooled are tough machines...the chassis should handle the power

[carzboyz]

What will be the major difficulties to swap a liquid cooled in my chassis ? I see an 1994polaris rxl and the radiator are not under the seat. There is one near the sproket and 2 other one on the step plates It seem to be easy to install with minor modification. But I don't know where the coolant hoses are ?

[carzboyz]

oh! I almost forgot ! How does it will cost for me to do this genre of modification ?

[kermit]

Why are you so interested in doing this swap, if I might ask?

First...I would use a Polaris 500cc motor, and be sure to get the drive axles. Mounting it in there won't be that bad, you will probably want to do that last, and just put it where ever the clutches line up. I would use all of you're existing drive axles and stuff, and just throw in the whole motor and clutch. Who knows it may mount up the same. You will have to realign the clutch. Overall there should be minimal fab work. Biggest things that I can think of are mounting of intake and routing of exhaust. I would absolutely run heat exchangers on the tunnel, don't bother with radiators and stuff, stock 500cc polaris sleds use exchangers anyways. The polaris ones are nice becasue they run under your feet and keep your toes warm. The problem that you will have with radiators is that your sled wasn't designed for them, so airflow into and out off the hood would be inefficient. Also they will get crammed full of snow (many 4 stroke sleds that have radiators stock had this problem). Plus you would have to come up with custom mounting for them. Other than that, the rest is just wiring and finding places to mount stuff.

[pooty]

Atleast you picked a good brand to modify as many of the parts are interchangeable from many years. I dropped a 95' xlt 600 into my 92' 440 chassis with very little fab. work. All you really need is a clutch alignment tool (got mine off ebay for cheap). You just might have to work out some bugs after it's done. I also installed a xtra 10 setup with a fox shock to relief my sore back. I'd say go for it........it's fun and rewarding. If your looking for more reliable performance and comfort, you'd be better off buying a newer sled.

[reliantwagon]

uhhh... didnt indys come with 500cc engines?

[kermit]

Yeah, the Indys did. He said that his was an Indy Lite though. I'm assuming that it's a lightweight version of the sled. I'm not really sure why he would want to take a lightweight sled and throw a heavy motor like that. The balance will be way thrown off...too much ski pressure so bad traction, probably is going to max out the front springs. I imagine that it wouldn't handle as well in the turns and it will also be lacking in the top end since it's only a 500cc.

Also if you look, snowmobiles offer many engines in the same chassis. The don't have heavier chassis for bigger engines...therefore the weight of a sled is defined by the engine size. So by dropping in a 500cc engine into a light sled it will weigh almost as much as a regular 500cc sled.

If you ask me...save the extra work and buy a Polaris XC 600 with the Edge or the Edge-X suspension. It will probably be just as fast through the corners, but it will blow you away on the top.

[ShiftyGears]

This is my sled. Its a 1973 650 Starfire Polaris race sled. 1 or 125 made. My dad is riding it in the race against the 700 iq. Im on my IQ. Shes a hell of a ride.

[carzboyz]

How many for a good polaris indy 500 SP 1992 or 1994 or a 600 xlt or a indy storm or a rxl (no touring version)

[sledneck824]

i have a problem with my 1989 yamaha phazer 480 fan cooled i just got it rebuilt and it keeps over heating and not running right and i put a after market pipe on it to and i want to know if anyone knows why it would do that dont have more then 20 miles on it since i got it back

[mopar3.0]

stock jets in carbs/
is the fan spinning loL
is the pipe meant for that motor.

air cooled sleds arnt good to try to modify

[Martin]

Sell the sled and buy some thing newer. Engines and suspensions came a long way in the past 15 years. even if you only get a sled 5 years newer it will be lightyears ahead suspension wise.

[newmember]

Sledneck, you must change your jetting according to make up for the pipe you put on. If you modify your motor at all, you gotta play with your carb to make the money count. Big Polaris motor in smaller frame=why? Granted a lot of the stuff will line up, you need a donor sled. So suppose you find one for $500 with a blown track or the motor cooked a piston. You start swapping stuff, realize one thing is broken, need new hi-fax, shocks are gone, do some wiring, some plumbing for cooling. In the end are you ahead of the game, maybe if you have all the parts laying around and the knowledge. I have a 1980SRX gold anodized chassis, with a 78 Exciter 440 FC stock motor, 84 Excel III rear suspension with wheel kits installed, widening kit on the front, 78 Exciter hood, 98 SRX seat, Comet A902 primary, custom cut secondary. The combo is good for 90 mph on the lake with an untouched motor, stock pipe and carb. Only reason I have it is because I was an apprentice at a local sled shop, and as my pay my boss helped me put it together. Also helped he raced Yamaha in the 80's and had all the parts laying around and the manuals for specs.