Competition Tubular header for Cummins?

[GO 4LO]

We're thinking of starting work on a tubular header for my 12V. Planning tentatively on 1. 75od/. 120 wall stainless. Anybody have any comments on this material choice? Too big/small? Just want to make sure we do this thing right the first time. Thanks.

Chris

 

[chuckwilson]

Chris, We built a header for a NTC 400 Cummins once, you will have to make a support bracket from the block to the turbo flange or the turbo will drop down and twist the header from the heat cycles, Good Luck!!!

 

[sbentz]

Agreed, go to my web site and see the one we melted on the dyno. Go for cast or at a minimum, inconel. Stainless will work, but support it.

 

[DRAG DIESEL]

A visual aid for those out there that may have never seen an equal length header for a diesel.



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[keimmmo]

Interesting header. How much did it improve the power?



Steve

 

[GO 4LO]

Yeah, I'm interested, too. I would have thought you'd lose more power due to heat loss than you would gain due to keeping the runners equal length.

Chris

 

[Green Machine]

Well how is it coming?

 

[sbentz]

I will have photos of our new manifold for the dragster in a week or two. Should be cool.

 

[biggy238]

Hhmmm

A visual aid for those out there that may have never seen an equal length header for a diesel.

This works on an engine known not to have equilateral induction events?



I just thought it was alot of hassel on an engine that runs cylinders rich or lean depending on their position in the block.



Ofcourse it could be fixed by a custom intake.

 

[towner]

https://www.turbodieselregister.com/forums/showthread.php?t=66674&page=11&pp=15