I was wondering if anyone has seen a 2.8 with Weber carbs and/or velocity stacks? They would look really cool on the motor imo and I'm looking to find some.

 

Falconer built a motor or 2 with ITBs/ITCs, Idk what brand they were. but imo, just find some hayabusa throttle bodies on ebay imo, much cheaper. You will wind up with 2 extra, but still a lot cheaper, and if you find someone else looking to do it you can split a set of them up half and half, or just try selling the 2 extra, might get lucky and find 2 by themselves, but I wouldn't count on it.

 

Has anyone actually moded the Hayabusa throttle bodies to fit the V6? That looks like an interesting possibility, particularly for the intake manifold I am designing. Instead of two plenums, I could put these on with velocity stacks...humm. Ideally I think you would need sequential firing injectors, so there would be some computer problems beyond my experience- BIG TIME!

 

Well to run ITBs the manifold is going to have to be custom anyways, I don't see any reason to spend $200+ on a single ITB when I can get 4 hayabusa TBs for the same price or even less. Imo spend the money on the manifold and other parts instead.

 

MPFI works fine with ITB's, i've had no problems.

 

Can you give us a snapshot of what you did to set yours up? Or would it require a more detailed write-up?

 

Uhh, he has a long build thread with plenty of pictures in it.

 

I think he meant the manifold and ITBs themselves, which if memory serves purple82ta bought a 1 off that may or may not actually go into production. But I wouldn't hold my breath on it going into production.

 

My setup uses the stock gen 3 (3500 in my case) lower intake manifold, there are 2 adapters that bolt to the UIM flange and the 6 45mm ITB's bolt to that. the stacks thread into the TB's.

This retains the stock injector port locations and stock gen 3 fuel rail so other than some creative vacuum line routing it's more or less a bolt on deal.

Here is a pic of mine before i bought it... http://www.sdsgarage.com/Misc/Camaro/Intake/F01.JPG




For an iron head engine you'd need something a bit different. Here is a neat setup from my archive of random 60v6 stuff..




I have other pics as well, i'll have to look a bit deeper for them though...

 

that setup above could be easily duplicated my somone who can weld aluminum.
u could use tbs off a bike motor or even bike carbs that are converted to run dry.

only thing i would change would be fuel injectore placement, the way it is above would be fine at mid to high rpms but i bet low speed and idle sucks

 

Yah, you'd have to be really careful with the spray pattern. 3.4 DOHC injectors have a huge pattern that's really more of a fog then anything. They might work well enough but either way, that's really not the type of setup you'd daily drive.


ITB's on a 60v6 are louder than you could imagine, definitely fun though...

 

This is my 3500 set up I am working on. They are tb's of a 1000cc yamaha boat engine.

 

cool!