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IFS snopro speeds?

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IFS snopro speeds?

Postby ChampFan » March 23rd, 2004, 6:20 am

In general, about what kind of top speeds would each of the three classes IFS snopro sleds put out (250,340,440)? Any idea of HP of these sleds?
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IFS snopro speeds?

Postby PDRacing » March 24th, 2004, 6:38 pm

The stock hp of a 78 440 Rotax snopro engine is around 120 at 10100.
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IFS snopro speeds?

Postby WAVEY DOG #26 OSRF » March 25th, 2004, 12:09 am

ChampFan, as I recall the 340 has around 100hp and ran around 85mph to 90mph. David
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IFS snopro speeds?

Postby OldCatRacer » March 25th, 2004, 12:36 am

The 250's in ratio to the bigger ones were faster. I'm thinking 83mph. Our 11 port 340 Cat would do 93 on some tracks. The old 440's would hit 101? These are half mile size ovals.
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IFS snopro speeds?

Postby ChampFan » March 25th, 2004, 3:07 am

Thanks for the replies. Some impressive numbers.
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IFS snopro speeds?

Postby cpr racing » March 27th, 2004, 10:18 am

Hey,

I would love to see a Cat 340 sno-pro do 93 mph on a 1/2 mile oval, now or then (a Rotax 340, yes)not a Cat!
Back in 1978 Larry Coltom was clocked @ 87,88 & 86 mph on his 440 @ Kinross Mich.
A 440 Cat sno-pro would be lucky to hit 95mph on a 1/2 mile. There has been little R&D on those old Cat motors compared to the Rotax.
If you still have those motors you better keep'em cause they are both ONE OF A KIND! HA HA.

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IFS snopro speeds?

Postby cpr racing » March 27th, 2004, 10:35 am

PD Racing,

I dont know where all you guys are getting all these high HP sno-pro motors, but I wish I had one..HA HA

The '78 motor was the lowest Hp out of the sno-pro motors.
there is no way a STOCK '78 sno-pro motor has 120 ponys.
A full mod with a good set of pipes MAY be in the 120 HP range, maybe more for the drag racers. On the ovals, you have to keep'em together for more than 660 ft.
If you are getting 115 HP from a full mod 440 Rotax you are doing pretty good!

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IFS snopro speeds?

Postby sled_king » March 27th, 2004, 12:12 pm

i agree with CPR Racing.
there is no way a 78 sno pro 440 would have 120 hp.
todays champ 440 motors will hit 120hp, there is a large difference between todays champ 440 motors and the 78 440 snopro motors.
by the way, Devin nice to see you guys at Beausejour this year!
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IFS snopro speeds?

Postby ZR800XC » March 27th, 2004, 2:30 pm

maybe some of you guys are just mis-informed...at eagle river in 78 when the new IFS sleds rolled out on the track, speeds in excess of 100 mph were reached for the first time...how you can say that speeds of 101 are impossible is beyond me. And let's not forget in 1980 when Villeneuve won the world championship on his 340 supermod, his speeds were over the 100mph mark. You guys might learn something if ya just listen to some of the guys that raced these sleds back in the day like OldCatRacer. And to say not enough time was spent on R&D of these engines, they are just as capable of turning out the same power of todays 440s. What's the average horsepower of todays factory sno X racers? 105 or 106...A nine port Cat sno-pro engine can see these numbers, hell, a 77Z engine can be built up to that with little work.


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IFS snopro speeds?

Postby OldCatRacer » March 27th, 2004, 2:31 pm

I had to get out my old SnowWeeks and find that in 1980,'81 at Eagle River that the straightaway speeds were 90mph! Brad Hulings was powered by Cat in '81. That track is tight and fast but not like some of the wider tracks that faster speeds can be obtained. Alot of guys who never were around those sleds when they were new back then don't seem to get the max out of 'em when they run them today like we did back then. Heck we even took our oval sleds to 660ft drags and got clocked at 90 plus mph. And yes CPR I wish I still had Jim Dimmerman's former factory sled I rode in 1981. I might not have been that good of driver but I mixed it up and beat some good guys in heats back then. We had 44mm carbs back then. Thanks for your time again. Lance
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