big bore jetting

[badassbanshee479]

bought a used set of cylinders with vitos big bore kit and tyson aggresive dune port done to them, I tryed calling tyson for jetting help but no one will answer the phone and they have not returned any of my messages I left them so can some one give me a good starter point to jet my bike too??

 

I am running stock carbs for now till I can afford new ones, t5's 7 degrees of timing noss head with 20 cc domes, ported stock cages with tdr reeds (for now)

and a 2 into 1 air filter kit,

 

I have stock pilot 280 mains, toomey needles, and air screws at 2 turns out right now

 

 

any help would be great

 

thanks

 

the guy I got the cylinders from said they should be good for around 70-75 hp but he had 35mm carbs not stock

[dajogejr]

I would start with 27.5 pilots.

Start with about 350 Mains.

1.5 out on the air screws, and a box of plugs.

 

Go from there...

 

You're really killing that engine with those carbs...as you know.

 

Did you try calling Vito's...see what they say...

[badassbanshee479]

I would start with 27.5 pilots.

Start with about 350 Mains.

1.5 out on the air screws, and a box of plugs.

 

Go from there...

 

You're really killing that engine with those carbs...as you know.

 

Did you try calling Vito's...see what they say...

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never thought to call vitos I will try that out

 

 

thanks

[badassbanshee479]

anyone know if the toomey needles are richer or leaner than stock ???

 

should I leave them or go back to stock

 

sorry for the dumb questions I guess this si what I get for buying used parts

[dajogejr]

Not really a question of leaner or richer...they are definately longer, which generally means your mains will kick in a bit later.

I assume you mean the dynojet needles in the Toomey kit.

 

Put the clip in the 4th groove down from the blunt end, there should be 6 notches instead of stock 5.

 

You're going to need to dial the mains in first, or you could spend all day reclipping the needles.

 

Make sure your carbs are sync'd properly, too.

[badassbanshee479]

Not really a question of leaner or richer...they are definately longer, which generally means your mains will kick in a bit later.

I assume you mean the dynojet needles in the Toomey kit.

 

Put the clip in the 4th groove down from the blunt end, there should be 6 notches instead of stock 5.

 

You're going to need to dial the mains in first, or you could spend all day reclipping the needles.

 

Make sure your carbs are sync'd properly, too.

368004[/snapback]

 

cool thanks

[badassbanshee479]

cool thanks

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vitos emailed my back and said to go with a 350 main 30 pilot and they tryed selling me a set of there dyno jet needles, does anyone know if theres are the same as toomeys, they also said I am running to much timing, is this the case?

 

 

I run straight 110 turbo blue at 32 to 1 so I don't think 7 degrees is to high

 

any help would be great thanks

 

what size is the stock pilot ??

[wayfst]

we run 8 on 7mm strokers, stock crank with 110 should be ok. watch your temp and if your plugs turn yellow turn it back 2 degrees.

[badassbanshee479]

we run 8 on 7mm strokers, stock crank with 110 should be ok. watch your temp and if your plugs turn yellow turn it back 2 degrees.

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thanks for the help

 

 

the needles are the same too

[badassbanshee479]

any body running the vitos pipes n there banshee??

 

how do they compare to the rockets and sheers ??

 

also what would make a bigger diffence on my big bore bike pipes first or bigger carbs??

also should I go 33's or 35's

 

thanks for the help