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02-08-2010, 11:04 PM
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#11 |
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VIP Member
 
Join Date: Oct 2004
Member #: 2024
Location: Gurnee, Illinois
My Sled: 1978 SSR 440 (NEW)
Posts: 2,257
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the 1979 and down ET's have a splined crank. This means you cannot run aftermarket primary's on it. The 1980 and up run a tapered crank so it is easy to change to different primary's. The splined primary's are very limiting and not much can be done to change RPM's the way you want. The gearing all depends on what distance you are going to run. If you are going to run a half mile track, you can probably get away with running stock gearing.
As far as your question regarding 250's running with 292's...There were about 4-5 250's running at eagle river against the 292's. 1st, 2nd, and 3rd place were all 250 enticers...
__________________
CB Performance Carbide Video Below! http://media.snowmobilefanatics.com/gallery/gallerycontent/Member%20Videos/General/2005112211930_4775.wmv Prices are in the video! www.cbperformanceparts.com Contact us for the lowest track prices around! |
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02-09-2010, 02:27 PM
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#12 |
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Junior Member
Mini
Join Date: Jan 2010
Member #: 14012
Location: NY
My Sled: SRX700
Posts: 6
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we will be running both short and long tracks we run two different organizations. the et will mainly be run on a short track and one1/2 mile once a season. I can run a different pipe if a jump to the mod class. does a pipe make a differece and what pipe i used and what engine mods need to be done. approx what horse with pipe
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02-09-2010, 03:37 PM
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#13 |
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VIP Member
Join Date: Oct 2004
Member #: 2024
Location: Gurnee, Illinois
My Sled: 1978 SSR 440 (NEW)
Posts: 2,257
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I am unfamiliar with running an aftermarket pipe on the sled because no races we attend will allow that. Running a pipe will make a huge difference but you will spend a lot of time trying to dial in the pipe with jetting and figuring out what rpm's to run the pipe at. If you are racing against SR 292's in the mod class, don't waste your time. Most of those SR's with a good tuner are putting out low to mid 70's in the HP range.
__________________
CB Performance Carbide Video Below! http://media.snowmobilefanatics.com/gallery/gallerycontent/Member%20Videos/General/2005112211930_4775.wmv Prices are in the video! www.cbperformanceparts.com Contact us for the lowest track prices around! |
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02-09-2010, 03:56 PM
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#14 |
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Member
Mini
Join Date: Jan 2009
Member #: 11450
Location: Ottawa, Ontario
My Sled: 2006 Apex GT
Posts: 30
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I meant a separate fuel pump since the older keihins has the fuel pump built in.
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02-09-2010, 05:26 PM
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#15 |
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VIP Member
Join Date: Oct 2004
Member #: 2024
Location: Gurnee, Illinois
My Sled: 1978 SSR 440 (NEW)
Posts: 2,257
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Yes, we had to run a separate fuel pump for the carb.
__________________
CB Performance Carbide Video Below! http://media.snowmobilefanatics.com/gallery/gallerycontent/Member%20Videos/General/2005112211930_4775.wmv Prices are in the video! www.cbperformanceparts.com Contact us for the lowest track prices around! |
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02-10-2010, 11:19 AM
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#16 |
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Member
Mini
Join Date: Jan 2009
Member #: 11450
Location: Ottawa, Ontario
My Sled: 2006 Apex GT
Posts: 30
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Does it matter what fuel pump i use?
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