Carbureted 2 Stroke Snowmobiles Rare Gold or Dinosaurs?

whitedust

Well-known member
The new 2012 EPA snowmobile engine emission regulations will eliminate or at the very least greatly reduce the new production of carbureted snowmobile 2 stroke engines. 2012 USA Government EPA Fleet emissions averages just will not allow production of non compliant carbureted 2 stroke engines.

Soooooooooo if you really really like 600cc & larger carbureted 2 stroke engines your time to purchase is very limited. You will be able to continue purchase Etek 2s & some CFI 2s engines but carbureted 2 stroke engines will not be available.

4 stroke snowmobile engines currently meet all 2012 EPA emissions.

If OEMs don’t make many 2s snowmobiles we can’t buy them.

Are we going to see the OEMS sell more 4s than 2s snowmobiles to meet fleet emissions averages even Ski-doo?
 

booondocker

New member
Carburetors are moving away from the main stream quicker than you can add two stroke oil. It is not easy to make them change "on the fly" as you can with cfi and efi and therefore it is always a happy medium when they jet them and set them up at the factory. Too hot, too cold, to much altitude, too little...etc. equates to inefficiency, and wasted fuel...aka, pollution.

For the most part, cfi will be the more responsible way to get the most from your engine and to pollute less.

Way I see it, two strokes will always burn oil, and doing so means that you will emit pollutants which will rule them out in all future production, except for perhaps a handful of companies that want to feed the die hards. Somebody might invent a two stroke that burns NO oil and runs in an oil bath but again the efficiency will not be what a cleaner 4 stroke already has.

Nice clean smaller 4 stroke with a turbo charger putting out all the ponies your heart can desire is where the drawing boards are going.

So I vote Dinosaur.....
 

rakins800

Member
actually all they need to do is sell a lot of low emission 4 strokes to "borrow" credits to sell the less efficient 2 strokes.
with that being said,I agree the day may be looming near when 2 strokes will no longer be available.much to my dismay.
 
G

G

Guest
Has anyone seen the ETec boat motor demo where they hook up transom to transom with a similar HP Yami and proceed to drag the Yami powered boat backwards until it sinks? I thought I have also read that the ETec is cleaner than a four stroke in some pollution categories. Also catalytic converters are on the horizon for four strokes which will make them even more expensive and heavy. Turbos make power but also cost more and you can bet folks will screw with them to make even more power and destroy the 4 stroke reliability. The '03 F7's remain the stock drag race kings 7 years after they came out. Weight counts. We are all lucky 'Doo has jumped headlong into two smoke tech. It may be our last option for a lightweight snow toy in the years to come.
 

ezra

Well-known member
grub you can bet folks have alredy modded 4 strokers.D&D has a hijacker box so you can go from 177 to 260 hp without playing with injectors.you can get more hp with bigger injectors.I forget who but one of the big speed shops have a cdi mod with meathanol injector kit to get you past that 260 mark.I have a bud with a older t660 with a jj power sports cdi mod bigger injectors and some wastgate work pushing close to 200hp with 3500mi on it.
 

anonomoose

New member
Oh, yeah...well I am putting a used jet engine on mine...and though it will suck for just about all known snowmobiling needs, it will be faster than fast.....oh, and never mind about pipes...this one will be loud enough to wake up the dead. I jist wonder how all those little needle bearings will hold up under load???
 

ezra

Well-known member
well my 05 z71 burns oil to.as far as weight to power more efficiant is a understatment.I have 2 FI sleds and 2 carb sleds but I like playing with jets and needel settings to get them dialed in to fly accros the lake.and the fi sleds also need to be played with to make them run right .aloy of the ac 7 laydowns can have alot of fuel removed from top end and a tad added to mid to get top performance.we are al getting lazy with our new no break sleds .when I was a kid the trunk was always stocked with all the tools you need to get home.if you owend a sled you had to know how to turn a wrench.I have been on trips with guys who thought a trip was over from a burnt piston or a broken recoil. thay were shocked you could start a sled with a tow rope. or that you can do a top end in a parking lot in under a hour.for me tuning is part of the fun.if you cant tune you cant win thear is no glory pulling in to the bar at the end of the lake last more so whenyou ride the same sled as your bud who is alredy getting off his sled
 

ezra

Well-known member
ps at the outlaws it took till 4pm on sat for a modern sled to match the top speed of a vintage the day before .carbs may be old but old is not always obsolete.unless you are a 01 explorer cash for clunker.ps adding nos to a carb motor is a bitch and not as efective as a boondocker box and efi hands down winner in that class efi
 
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