Vintage Sled Horsepower Ratings Thread - HCS Snowmobile Forums

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Old 02-02-2007, 10:46 AM   #1 (permalink)
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Hello My Fellow Vintage Enthusiasts,
I have always been interested in horespower ratings for vintage sleds, especially the high horsepower performance sleds.

Let's start a list of vintage sleds, and their official horsepower ratings. Include any published data, articles, or stats if you have them. Let's see how many we can get.

I'll start. Here are the specs on the Merc Sno Twisters:

http://www.mercurysnowmobiles.com/sno-twister.htm

Let's get specs from Yamahas, SnoJets, Ski-Roules, Arctic Cat Z's, and all other makes.
Matt
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Old 02-02-2007, 04:47 PM   #2 (permalink)
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77 SRX around 93Hp

78 SRX around 85Hp

81 300ET 28HP

going vintage racing this weekend, hope to get more numbers,, I get to run the 300,,Oh,,boy,, better than standing around I guess,,R2R
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Old 02-02-2007, 06:25 PM   #3 (permalink)
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I missed out a chance to run my buddies vintage sleds on the island this weekend (wife had to work). He has a 77 skidoo 250 super stock ,77 skidoo 340 super stock and a 660 cat. Hope to go next year with my 78 RV 340 or 75 Moto-ski 340 TS (if there ready) . Hey there ready2race get us some pics will ya.


77/78 skidoo rv 340 rotax free air twin 34mm carbs and twin pipes 63 hp
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Old 02-02-2007, 07:32 PM   #4 (permalink)
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This site has loads of great vintage info. I'm sure you guys know about it, but there are scans of original sales brochures and magazine articles, in case you haven't seen it. http://www.vintagesnowmobiles.50megs.com/BROCHURES.html

I only have my hands on two vintage sleds.

75 Rupp Nitro 440 fan 438cc Kohler K440-2AS 55hp
74 Alouette Junior Brute 200cc Tecumseh 5hp

FWIW, the '75 340 nitro fan had 47 hp
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Old 02-02-2007, 11:48 PM   #5 (permalink)
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Here is the adverised horsepower for most of my Vintage sleds.
YR/MAKE/MODEL/ENGINE HP @ RPM
-1969 Skiroule S-370, Sachs sinlgle 23@5500?
-1972 Skiroule RTX racer, 440 Sachs RX 70@9000
-1972 Skiroule RTX 447, Sachs 440C 40@7000*
-1972 Speedway 650, triple Kohler SS, race pipes low 90s@8000+
-1972 to 74 Speedway 440 Kohler SS, mufflers 60@8000
-1974 Speedway 295 Kohler RS 45@8000
-1974 Alouette Super Brute, 440 Sachs C 42@7000*same engine as '72 RTX447, different carb and exhaust.
-1974 Brut LC29, twin liquid Brooten 30@7000
-1976 Merc Sno-Twister 440 see orig. post
-1976 Skiroule Ultra 447, Kohler AS w/single Walbro 50@7000
-1977 Boa-Ski SS 440, Kohler AS w/ twin Mikunis 55@7500*same as Merc TT and Rupp Nitro II
-1979 Skiroule "Crystal Built", Kohler LC 440 60-ish@7000
-1981 Scorpion Sidewinder, 440 Suzuki Liquid not sure, 60-ish?
-1988 Arctic Cat Wildcat 650 Formula III race 140+/- @ 9500
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Old 02-03-2007, 05:58 AM   #6 (permalink)
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Current Sled(s): 06" F 7- R
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Quote:
I missed out a chance to run my buddies vintage sleds on the island this weekend (wife had to work). He has a 77 skidoo 250 super stock ,77 skidoo 340 super stock and a 660 cat. Hope to go next year with my 78 RV 340 or 75 Moto-ski 340 TS (if there ready) . Hey there ready2race get us some pics will ya.
77/78 skidoo rv 340 rotax free air twin 34mm carbs and twin pipes 63 hp[/b]

To bad you couldn't make it,,hope to see your buds sleds there,, you guys have a nice line up ,, yeah, I'll try to get some Pic's should be fun to an otherwise DULL winter,, R2R
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Old 02-03-2007, 09:23 AM   #7 (permalink)
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This site has a lot of vintage sled speeds- http://jeteralfonso4500.tripod.com/id6.html
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Old 02-03-2007, 04:03 PM   #8 (permalink)
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76 yamaha srx 440 was 91 ish hp, 77 yamaha srx 440 was 96 hp
'78-'80 yamaha srx 440 82-84hp
'79-'82 skidoo blizzard 9500 (440) was 82-84hp
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Old 02-04-2007, 12:27 PM   #9 (permalink)
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Does anyone know what the hp's were on these sleds?
1- 1981 polaris indy 500 centurion.
2- 1978-1984 eltigre 6000
3- ski doo blizzard 9500-9700
4- early arctic cat king cats and ext's
5- 1980's kawasaki 440 invaders and the 550 interceptor.
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Old 02-04-2007, 12:50 PM   #10 (permalink)
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1978-1981 eltigre 5000-62hp
1978-80 eltigre 6000; 70hp
1981 eltigre 600085hp
1977-1981 jag 3000 30hp
1981 jag 4000 42 hp
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