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Help with jetting


Zachaweia17

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I have a 1999 Banshee with tors delete, stock crank, stock head, stock air box, with K&N single filter, stock carbs, stock exhaust, and 64.50mm Vito's SuperStock Pistons. I My elevation is around 800 feet and will be riding in 75 to 85 degrees F. What should my adjustments be to run right. I will be using 93 octane with 32:1 R-2 oil. Thanks!

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I have a 1999 Banshee with tors delete, stock crank, stock head, stock air box, with K&N single filter, stock carbs, stock exhaust, and 64.50mm Vito's SuperStock Pistons. I My elevation is around 800 feet and will be riding in 75 to 85 degrees F. What should my adjustments be to run right. I will be using 93 octane with 32:1 R-2 oil. Thanks!

My carbs are 28mm

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I don't know what jets are in it now. I have never heard it run before but the SuperStock pistons say it needs to be rejetted. 

I cant remember what the stock jetting is, but the only thing you listed that would require a larger main jet is the K&N filter, probably one or 2 sizes larger.  You can probably use the stock pilot jets, you may need to make the idle mixture a little richer with the air fuel screws, try one turn out from seated.  Pistons wont change the jetting.  Your oil mix ratio sounds a little on the rich side too, I would mix about 40:1.

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Vito says that because the piston has been cut to somewhat mimic the exhaust port being raised.

 

I ran those once, and rode a trail ported banshee from a guy that was riding in the area......went home, and broke it down, and sold them cheap.

 

Sent from my SM-S820L using Tapatalk

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I actually loved my superstock motor.

 

Sent from Planned Parenthood

Yeah well...........your different lol. I'm not saying they are junk. I'm saying if your really looking for more power then go with an actual port job Ronnie Dobbs

 

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I have a 1999 Banshee with tors delete, stock crank, stock head, stock air box, with K&N single filter, stock carbs, stock exhaust, and 64.50mm Vito's SuperStock Pistons. I My elevation is around 800 feet and will be riding in 75 to 85 degrees F. What should my adjustments be to run right. I will be using 93 octane with 32:1 R-2 oil. Thanks!

It has 200 main jets and 25 pilot jets

Edited by Zachaweia17
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To be honest....I've never ran, or dealt with a stock exhaust set up. I'd look into a cheap set of fmf, or t5s. I'm not sure what you're after, but a pipe change would be a bigger improvement then those pistons.

 

I'd say pilot is probably ok at 25.

 

Main maybe start at 260, and work down until you find the sweet spot.....again I'm just guessing.

 

Sent from my SM-S820L using Tapatalk

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