i-body carbs

[beachedflunkey]

Anything different internally between mikuni i-body 44's and oem 44's? Same tuning specs, rebuild kits, flame arrestors and whatnot?

 

[Matt_E]

I-Bodys are I-bodys. OEM 44's are Super BN 44's.

More info here, here, and here.

 

[beachedflunkey]

That was fast. So do they function just as well as sbn's?

Same tuning specs, rebuild kits, flame arrestors and whatnot?

 

[Matt_E]

That third link should provide some info on rebuild kits. I don't think SBN and BN parts are interchangeable...but I may be wrong.

I know John @ JSS loves them. Give him a call, I am sure he's got tons of info.

 

[blaster800]

Anything different internally between mikuni i-body 44's and oem 44's? Same tuning specs, rebuild kits, flame arrestors and whatnot?

I-bodys have accelerator pumps ! and the rebuild kits are different !!

 

[Big Kahuna]

That third link should provide some info on rebuild kits. I don't think SBN and BN parts are interchangeable...but I may be wrong.

I know John @ JSS loves them. Give him a call, I am sure he's got tons of info.

He installed some, but I dont think he rode with them much... He has since sold his ski.......... no longer rides........

 

[Matt_E]

Wow. Really?

 

[Big Kahuna]

yeah, but Neil (RMBCFreeride) did this mod before John did, said they worked really well on his SJ...........

 

[beachedflunkey]

That groupk write-up says it has a lot weaker signalling and makes it sound like it's a lot more difficult to tune. I read on pwct it's taper-bored too. I was also led to believe that sbn's and i-body mikuni's were the same other the limited reading i'd found about their external appearances. Thanks guys.

 

[blaster800]

................................ FWIW: another writeup I read stated it was much more forgiving to/ altitude, humidity and temp changes due to the acc/pumps ! I doesent need signal to draw the fuel when its forced in under pressure , was my understanding

 

[RiverRat]

I have a set for sale if anyone is interested :cool2: Came off a GP800 motor

 

[RMBC Freeride]

yeah, but Neil (RMBCFreeride) did this mod before John did, said they worked really well on his SJ...........

Just to clarify... BK is right I have used a couple differnt setups with the I-series carbs. i actually turned John on to the idea.

BUT... He and I have only used the 40I (like what comes on a SXR or a SEA-DOO 720/800).

These are not the same as the 44I that come on the GP800 and some of the bigger seadoos. I have no experience with them on a SJ.

My very best setup with these carbs (40i) was a set that had been modified by Novi: 42mm with their booster venturi. Very snappy on a 701-760, but I would not recommend it for much over 760cc. Very easy to tune and a very strong signal due to the way the I-body throat is shaped. I still have this set but all my motors are too big for them now!

 

[Scorn800]

I've run stock & true bore 40i carbs on my sxr's.
They hit pretty good and easy to tune but I'm far from a carb expert.