I-6 Tuning

[tri-power 250]

I was reading about how Ohio George Montgomery tuned his Twin turbo Boss 429 "Mr. Gasket" Mustang engine as if it were 2 4 cylinders connected to a common crankshaft.
My question is, could a 250 with 2 carbs, 1 for the 1-3 cylinders and 1 for the 4-6 cylinders be tuned this same way.
Have the log divided into 2 sections, add the carburetors. Have a pair of headers, 1-3 and 4-6 much like the 300 ford headers. Add 2 oxygen sensors and a A/F meter. I don't know how to hookup the a/f gauge to separate the 2 banks but I'm sure Innovate Motorsports could help with that detail.
The idea would be tune the engine in halves. Has anyone tried this?
I wonder if an I-6 could hold 2 turbo's, tuned this way?
Just a thought.
Ken

 

[bubba22349]

My question is, could a 250 with 2 carbs, 1 for the 1-3 cylinders and 1 for the 4-6 cylinders be tuned this same way.

Yes it could.

Have the log divided into 2 sections, add the carburetors. Have a pair of headers, 1-3 and 4-6 much like the 300 ford headers. Add 2 oxygen sensors and a A/F meter. I don't know how to hookup the a/f gauge to separate the 2 banks but I'm sure Innovate Motorsports could help with that detail.
The idea would be tune the engine in halves. Has anyone tried this?

Yes it could be done easy with a toggle switch to change from one oxygen sensor to the other.

I wonder if an I-6 could hold 2 turbo's, tuned this way?

Sure it could with the right sized turbo's

 

[tri-power 250]

Thanks bubba22349.
I am going to check into doing up a log head with 2 carbs.
Ken

 

[MustangSix]

Aston Martin, Jaguar, Austin Healey, MGC.....all had similar setups.

 

[tri-power 250]

Thanks Jack,
I had no idea. I was looking at the log manifold and not quite sure how to divide the manifold.
Ken

 

[rocklord]

You don't want to completely separate the banks. You should have a balance tube between the banks.

The Corvair flat six has two separate cylinder banks, with separate carburetors, on a common crank. There is a balance tube running from under the carburetor on one bank, to the other bank's carburetor. If this tube is not present, the engine runs like crap. The turbocharged engines also have a balance tube connecting the two intakes from the single carb/turbocharger.

If you look at the multicarbed engines from Jaguar, you'll find interconnects between them.

 

[tri-power 250]

Thanks rocklord,
The turbo idea is not on my list. I was just influenced by Ohio George!
What is the inside diameter of the balance tube,or maybe I should ask, how do I determine the size?
This isn't going to happen right away.
Thanks,
Ken

 

[rocklord]

On my Corvair, it's about 3/8". You just need the tube (hose) large enough to allow the pressure (vacuum) between the banks to equalize.

 

[Soldmy66]

I would love to see this (dual progressive 2bl on log manifold w/ center divider). Please post pics as you go. I will live vicariously through this.