Pop off? Carb setting?

[Kbauer8]

I have a Mikuni 44SBN pulled from a vxr pro. It has no pilot screw. Plan on putting it in a SuperJet. Did a search but couldn’t find anything without the pilot.
What’s the carb setting on it?

 

[Req]

No pilot screw means its a BN carb I think. I have never messed with one before but I hear they are much less adjustable. I would look for a SBN.

Its odd, my Pro I parted had a SBN with pilot and main adjusters.

 

[Half flip95]

1 1/2 turns out

 

[Kbauer8]

1 1/2 turns out

High or low?

 

[Kbauer8]

No pilot screw means its a BN carb I think. I have never messed with one before but I hear they are much less adjustable. I would look for a SBN.

Its odd, my Pro I parted had a SBN with pilot and main adjusters.

It looks like there’s a place for it but there’s no hole for the jet.

 

[Half flip95]

I was being sarcastic. you asked for a carb setting without providing any useful information.

everything you need to know
http://www.mikuni.com/pdf/sbn_manual.pdf

 

[Kbauer8]

This is the carb I have.

 

[Req]

Part 14 and 36 look like little plastic caps. Is that what is blocking your pilot screw possibly?

 

[Kbauer8]

Part 14 and 36 look like little plastic caps. Is that what is blocking your pilot screw possibly?

No. Now that I’ve looked. It’s definitely a bn. No pilot. Said the high was 1.5 and low 1. The carb had the coke taken out and blocked off by the last owner so I went with the setting with the primer.
Thanks for the help

 

[Req]

No worries man!

 

[Storbeck]

I'm a little confused.

Mikuni BN44 carbs have more screws than an SBN. BN44 has three screws, SBN has 2. Sometimes the low speed is called the pilot, I'm not sure what you're calling the pilot because apparently your carb has a low and a high speed.

Got any pictures of the carb? What exactly is your carb missing that is leading you to believe it doesn't have a pilot screw?

 

[Kbauer8]

I'm a little confused.

Mikuni BN44 carbs have more screws than an SBN. BN44 has three screws, SBN has 2. Sometimes the low speed is called the pilot, I'm not sure what you're calling the pilot because apparently your carb has a low and a high speed.

Got any pictures of the carb? What exactly is your carb missing that is leading you to believe it doesn't have a pilot screw?

 

[Rushford_Ripper]

Right side of your carb is the HIGH screw, left side (by throttle) is your LOW screw.

 

[Kbauer8]

Having trouble with the pop off. I got a genuine Mikuni rebuild kit. The spring seams a little heavy. The pop off is at around 30 psi. I believe it should be at 15psi

 

[Kbauer8]

Seems like I’m getting an air leak through the corner. Am I able to put gasket sealer on this

 

[Rushford_Ripper]

DO NOT change the spring out if you are not going to do any motor mods at this time!!! Leave the stock one in there!!!

 

[Kbauer8]

I’m using the stock spring and it’s not working

 

[Roseand]

What exactly isn't working..? You shouldn't need any sealant anywhere on that carb. What's the order of your gaskets?

 

[Kbauer8]

What exactly isn't working..? You shouldn't need any sealant anywhere on that carb. What's the order of your gaskets?

I got the carb to seal but the pop off is high. About 40psi

 

[BruceSki]

Pop off should be 55psi. 115 gram spring and 1.5 needle and seat.

You need to do more reading and research before diving into these things.


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