Looking for some wisdom!

A

ahalick

Free Member

Dec 8, 2011

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• Dec 10, 2011

• #1

I just picked up a stock '96 powder special with 400 miles on it. Brought it to my home in Las Vegas to tinker with over the winter. Plan on taking it to my cabin(8500') when its ready. It idles, but thats about it. I disconnected the MAC. I swapped the 50 pilot for a 40. I swapped the 370 mains for 310's. She now runs super crisp with throttle response like a sport bike. So here is my question. I have read that the only way to really know if it is jetted properly is to let it out and check the plugs. Problem is last time it snowed here there were dinosaurs walking around. Is there another way to know????

 

WyoBoy1000

Well-known member

Lifetime Membership

Nov 27, 2007

11,213

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Red Lodge MT to North, CO

• Dec 10, 2011

• #2

Water skipping!! But when you change elevation it will need to be re-jetted.

 

A

ahalick

Free Member

Dec 8, 2011

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1

• Dec 10, 2011

• #3

Yes, rule of thumb is that if it runs perfect here, drop 4 jet sizes for that elevation. I already have 270's ready to install. I guess I might just have take it up and test it there. Oh, well.

 

D

diggerdown

Well-known member

Apr 25, 2004

3,452

677

113

Deer Park Wi.

• Dec 11, 2011

• #4

The 96' 580 ps came with 35 pilots and 340 mains. I don't have the elevation jetting charts. Always jet big and work down.

 

A

ahalick

Free Member

Dec 8, 2011

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• Dec 11, 2011

• #5

The belt cover says it is supposed to have 410's down to 380's depending on temp at sea level. The guy I bought it from only had it serviced at the dealer he bought it at in Utah(6000') and he said it always ran great. However, I found a bunch of old plugs in the trunk and they were all black. It had 50's for pilots and 370 mains. It ran horribly at sea level and obviously worse at our local mtn(8000'). I dropped the mains to 350's. That made no difference. That's when I decided to scrap everything and go old school. I came up with the setup I have now just from what I learned in the forums. I guessed. Got lucky on the first try, I think.

 

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firecat99

Free Member

Dec 10, 2007

963

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Yellowknife, NWT

• Dec 13, 2011

• #6

Is it the 580 or 600 triple your talking about?

 

A

ahalick

Free Member

Dec 8, 2011

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• Dec 16, 2011

• #7

580 dual carb.