Garage Storage Organization and Garage Cabinets

440dart · **turbo snowmobile "holset"???**

i was watching a snowmobile video and it had a ski-doo 800 with a holset turbo from a cummins on it now how in the hell does that work lil big i would think. dosent give much info other than it is off of a cummins does anybody know where i could get more info on this

**whywoody** · 10-12-2005, 09:45 PM

Not sure where to go for info,sorry,but turbo 2 stroke's would be interesting.I'm into 2 stroke street bikes,and have seen pictures of them turboed,but never read much on the set-up.I would like to learn more about it,especially how they keep crank seals from failing...Good luck on your search!

RAPTOR · 10-12-2005, 09:55 PM

Its off a 4 cylinder cummins,

mfpmax · 10-13-2005, 02:14 PM

Yeah I had seen pictures of a build up of a Snowmobile think it had a Holset too. Maybe a HX30?

afsautoworx · 10-13-2005, 03:02 PM

2 strokes have lots of exhaust flow. I would think the exhaust turbine would get real carboned up after a short while but its prob a drag sled right?

440dart · 10-13-2005, 11:32 PM

no these guys are around my area these are mountian sleds if any of you guys are into snowmobileing you should check out thunderstruck 4 there are a couple turbo sleds that sound pretty cool and are pretty quick its a good movie

440dart · 10-15-2005, 01:54 AM

when i looked at the skidoo that had the turbo it looked like a rather large turbo like a 6cyl cummins

ThreeTurbos · **turbo sled**

i saw a sled at my local track pull a low 9 sec 1/4 mile

nasty. guy could barely hold onto it when he punched it out

never saw under its cowl but i heard compressor whine.

87shelbyt2 · 10-15-2005, 10:26 AM

wonder how much boost it was running... the rotax motor uses a rotary valve instead of reed valves- thus carb tuning for it would be nearly impossible. I shouldn't say that... anything is possible but if you've ever seen what a rotary valve looks like or how it works... I'd figure it'd bind into the side of the case, with pressure against it... That's why Bombardier uses a 4 stroke for the new supercharged motors.

xrattiracer · 10-15-2005, 03:55 PM

turbocharging works just fine on all kinds of 2 stroke engines. just think of the rpms those things turn, and that they move twice as much air since they fire every engine rev. makes that 800 cc engine become alot larger if you do the math.

Ondonti · 10-15-2005, 07:56 PM

+++ Im sure that snowmobile is spraying a lot of nitrous.

87shelbyt2 · 10-15-2005, 09:22 PM

Quote:

Originally Posted by xrattiracer

turbocharging works just fine on all kinds of 2 stroke engines. just think of the rpms those things turn, and that they move twice as much air since they fire every engine rev. makes that 800 cc engine become alot larger if you do the math.

Not saying it's not possible... I'd just like to see how it's done on a "SkiDoo" which uses the rotax engine. I have a "SeaDoo" XP with the 800cc Rotax, it turns 110hp stock. I'm fully aware of the potential.

Just that 2stroke is very picky about the size and shape of the exhaust pipe, so throw an obstruction in there... and like I said, ya got this spinning disc that has a window cut it in to time fuel delivery... mounted right smack-dab against the case before the ports. I would think that any pressure against that disc would cause it to grind into the case. Heck the case has marks on it from the rotary valve rubbing on it anyways... this is just me reverse engineering the idea...