How to make an indy lite 340 faster ? - Snowmobile Forum: Your #1 Snowmobile Forum

carzboyz · 10-06-2009, 06:20 PM

Hello my father gave me his snowmobile its a 1993 indy lite 340 with a 121 inch track. The body is very clean almost like a new one but the engine start be tired up and I feel to have a faster snowmobile I though about an engine swap like a 580 or a 500 liquid engine. I know the radiator will be hard to fit. Do you thing the body and the chaincase of my snowmobile will handle this power ?

TwinsofMLB · 10-06-2009, 07:09 PM

Hell you could probably trade it to someone with a fast sled and a bigger engine.

carzboyz · 10-06-2009, 07:18 PM

Yup I tough about this option but I would like to have a real sleeper sled Imagine an indy lite with a 100 + hp engine. A real hot rod !! Does somebody could tell me the difference between an xlt or an rxl chassis and a lite chassis and chaincase. Do you think a 580 or 650 3 cyl engine will fit into my lite chassis in term of place under the hood ?

TwinsofMLB · 10-06-2009, 07:24 PM

Doubt it, but I wouldn't know. RJ will probably tell you in less than 5 minutes... he's always on lol.

**RJ Gleason** · 10-06-2009, 07:28 PM

A 440 0r 500 fan could be massaged in there.
To get anything bigger, you would have to modify the frame to accept the heat exchangers for a liquid cooled engine.

TwinsofMLB · 10-06-2009, 07:35 PM

Did I call that or what???

carzboyz · 10-06-2009, 07:37 PM

Except the heat exchangers what is the major difference ? Theres no problem for the exchanger on the step plates but the other near the sprocket and under the seat will be tought. I know there was some mods but what about the engine support, place under the hood, clutch and belt ? I will need to make a custom exhaust too

**RJ Gleason** · 10-06-2009, 07:43 PM

Much easier to put another fan cooled engine in there, only engine mount and exhaust placement modifications needed.
If you were to put a 488 fan into that light of a frame, it would just plain haul A$$.
Also, a fan cooled engine will not require that you also beef up the drive train to handle the extra torque that a liquid cooled engine has.

488 fan= about 50hp
488 LC = about 65hp.

carzboyz · 10-06-2009, 08:01 PM

I know its simple to bolt a fan cooled engine but I hate fan cooled engine when the weather is hot the performance are not very good compaired when the weather is cold. But do you think a 500 fan will make my sled faster then an indy 650 ? If its slower forget it I want a rocket sled for drag race. The only porpose for my my sled will be drag race and cruising in my field

**RJ Gleason** · 10-06-2009, 08:10 PM

Well, the power to weight ratio and a little gearing adjustment and some clutch tuning can make a 440 faster in 500' than an 800.
So, is the extra work involved to put a LC into a fan frame worth it to you?

carzboyz · 10-06-2009, 08:33 PM

I would like to install a 3 cyl because I love the sound of those engine and I want a liquid colled because it provide a more constent power. But if its possible to trade a lite 340 for a indy 650 or a storm 800 why not a trade. But if nobody want to trade his powerful sled for your slow one the work for a swap engine worth.

carzboyz · 10-07-2009, 07:01 PM

Does the chaincase is different between an 93 xlt and a 93 lite ?

racing_kidd · 10-07-2009, 07:46 PM

The chaincase out of many polaris wedges were the same basic moc up but the 1993 xlt case and up were diffent

, the 1992 xlt case mathes the indy light. There is a website out there polaris uses to look up and match genaric parts. its difficult to find but it is open to the public.
In a google search engine type ...polaris parts/browse... and you will be in.

As said the 440 or the 488 fan would be the golden motor for you, I would attempt the 488 liquid before the 650 motor due to major tuning and structural support, and where would the tripple pipes fit into that sleeper!

JheLrey · 10-07-2009, 07:46 PM

Sell it and buy a faster sled... it's about your only option!

Polaris87 · 10-07-2009, 09:22 PM

yea a 340 indy lite didn't have speed in mind or was open to motor swaps including tripples or any other 90+ hp motor without whoever was doing it to have a lot of money and time on there hands. Drive the thing or sell it and get a 600...problem solved.