What size carb and jets for a 2 to 1

[turbowrenchhead]

My elevation is 900 feet. I am running 20 cc domes. The jugs are stage 3 DIY port. I'm getting ready to buy the carb. I was thinking a 34- 36 pwk. What size pilot/mains should I start with?

[turbowrenchhead]

The intake is a custom setup off a sled that I bought from a board member.

[Sandking]

Pilot 42 ish and main could be 165 to 205 depending on porting

[mhoksch]

Don't do the 2-1.  I learned the hard way, it SUCKS.  You get way better performance from the dual carbs

[turbowrenchhead]

I have the stock carbs as well. I was going to try both setup's and keep the one I like and sell the one I don't. What would I shoot for pilot/mains on the stockers?

[turbowrenchhead]

I was leaning towards the 2-1 for better fuel economy and faster re jet if I need to on the trail.

[turbowrenchhead]

Don't do the 2-1.  I learned the hard way, it SUCKS.  You get way better performance from the dual carbs

Either people love them or hate them. I believe if you have a good intake that will make the difference on how well it performs.

[turbowrenchhead]

Just did a compression test. I have 130 psi on both cylinders. Any higher and it might require higher octane.

[trickedcarbine]

If you are referring to the 440 manifold go ahead and run it. If it is a trinity or chariot you are fucked and will regret it. There really won't be much more fuel economy. The bike will just pull almost twice the fuel through he carb. I think if I were you a 38mm PJ or even a 39mm PWK would suffice. I have seen a few 2/1 and MOST are garbage. But there are a few trick set ups that do work. Also stick to the E series needles on them or you will get a weird midrange hesitation and sputter

 

[turbowrenchhead]

I don't remember what the intake is off of. The member I bought it off said they worked great. It has decent sized runners. I should look back in my history and contact him to ask.

[turbowrenchhead]

If you are referring to the 440 manifold go ahead and run it. If it is a trinity or chariot you are fucked and will regret it. There really won't be much more fuel economy. The bike will just pull almost twice the fuel through he carb. I think if I were you a 38mm PJ or even a 39mm PWK would suffice. I have seen a few 2/1 and MOST are garbage. But there are a few trick set ups that do work. Also stick to the E series needles on them or you will get a weird midrange hesitation and sputter

The 35 pwk fits in the boot real nice. Not sure if I can go any bigger before it won't fit the boot. Where would I get another boot to fit the larger carb?

[turbowrenchhead]

The intake is off a Yamaha 440 sled and modified to fit banshee.

[BeeCanBanshee]

The 2-1 isn't bad I dunno how it compares to dual carbs since I don't have any. But I ran my banshee with a trinity 2-1 kit 33mm pwk, +4 timing, fatty's and it whooped 450s with exhaust and intake at the track. And still trail rode it.

[BeeCanBanshee]

But I'm switching to dual carbs after rebuilding so I can see how it compares.

[WINDYCITYJOHN400]

The intake is off a Yamaha 440 sled and modified to fit banshee.

 

Run a 35PWK it'll be fine. We have a bike in our group making 65HP with one. (His is a Graydon though.)