Engine/Transmission (1994 - 1998) Medium Duty Exhaust Manifold

[PKirby]

Has anyone used the manifold that places the turbo more to the rear of the engine? It has the uneven split of 4/1 and 2/1. I know it will create uneven backpressure but I wonder if it will be enough to hurt anything on a 700 ft/lb. 12 valve. It will work better for my conversion. I noticed Cummins uses that basic design on the latest Dodge engine.

 

[Joseph Donnelly]

Better to get the ATS manifold for the 2003-up Rams.

 

[Vaughn MacKenzie]

What about the shape of the ports? I guess a die grinder could fix that.

 

[PKirby]

The port shape seems to be OK. This is the manifold that came with the 1995 Ford chassis 6BTA Medium Duty engine that I am building. I am only concerned about the uneven split of 4/1 and 2/1. I also have a 1990 even split Dodge manifold but it has shrunk so mutch the bolts will barely start. The Ford manifold places the turbo at a better location for my use.

 

[SRadke]

The 03+ manifold from ATS has the offset design you're looking for and the cylinders are routed 3/1 & 3/1. The only problem is the flange surface is 90° to the block so not all turbos will have clearance to the block.



-Scott

 

[Joseph Donnelly]

It would be nice to have the 12V port mouths machined in, instead of the round 24V. I suspect ATS could do it for you when they make it.