- Location
- colorado river
I AM GOING TO BE PUTTING A BN44 ON MY 440 THAT HAS A MILLED HEAD AND KERKER EXHAUST AND I WAS WONDERING ABOUT WHERE I SHOULD START THE CARB SETTINGS? THX
300/440/550 Bn44 on a 440 with milled head and kerker exhuast
- Thread starter 550riverrat
- Start date
ger87410
How did I get here?
- Location
- Fort Worth
Please don't type in all caps. It looks like yelling.
What did you pull the BN44 off of?
Why are you using a BN instead of a SBN? A SBN44 is only $50 and well worth the cost.
What did you pull the BN44 off of?
Why are you using a BN instead of a SBN? A SBN44 is only $50 and well worth the cost.
- Location
- colorado river
sorry i have to use caps at work. anyways it is a long story but i have the bn44 off of a 550 and thought it would be better then the bn38.
ger87410
How did I get here?
- Location
- Fort Worth
Better, how? Not any easier to tune, I think.
Anyways, since it's from a 550, leave the needles alone until you try it.
Normally, 1 turn out for both is a good starting point. It all depends on the jets.
What size jets?
Anyways, since it's from a 550, leave the needles alone until you try it.
Normally, 1 turn out for both is a good starting point. It all depends on the jets.
What size jets?
- Location
- colorado river
ther are not any jets on the bn's just the screws that act as ajustable jets.
ger87410
How did I get here?
- Location
- Fort Worth
Try it.
I read the late model 550s came with a BN44 while the early ones came with a BN38. It might already be setup for you.
EDIT: You'd be best getting a SBN44 if you're gonna mod it. U may not be able to get enough fuel through with the stock BN44 carb.
I read the late model 550s came with a BN44 while the early ones came with a BN38. It might already be setup for you.
EDIT: You'd be best getting a SBN44 if you're gonna mod it. U may not be able to get enough fuel through with the stock BN44 carb.
Last edited:
screaming440
The Old Skool Professor
- Location
- KC/Lake of The Ozarks
the BN 44 was used on the 550 starting around 85'
when i built my 440 in the 80's thats all we had and they worked fine.
it will work fine for what you are doing.
turn the screws out 1 to 1 1/2 turns and adjust them from there.
put new plugs in it and keep a eye on them. the should look paper sack brown. if they are black you are rich white you are lean.
when i built my 440 in the 80's thats all we had and they worked fine.
it will work fine for what you are doing.
turn the screws out 1 to 1 1/2 turns and adjust them from there.
put new plugs in it and keep a eye on them. the should look paper sack brown. if they are black you are rich white you are lean.