Downpipe flange type? BD tow twins primary

[Hurley]

What's the downpipe flange type of the BD towing twin's primary (the big one 66/73)? It looks to be the same design as my HT3B exhaust outlet - I've seen the name mentioned before in a thread but my searching yielded no answers (maybe the thread was in another section?)

 

[Rollin Coal]

What's the downpipe flange type of the BD towing twin's primary (the big one 66/73)? It looks to be the same design as my HT3B exhaust outlet - I've seen the name mentioned before in a thread but my searching yielded no answers (maybe the thread was in another section?)

should be 4.21" full marmon vband unless BD machines it to half marmon

 

[Hurley]

I'm specifically looking for the flange that welds to the downpipe (or in my case the hot-pipe b/t chargers) - I can find them for the 5" & HX40 style, but not this size/style

 

[CL2000]

should be 4.21" full marmon vband unless BD machines it to half marmon

That should be right, If you have a big rig parts store most of them stock the flange. Cummins prob wont have it. If you have a cat or jd place they prob have them in stock.

 

[Hurley]

I cannot determine if the inside of the flange is tapered - looks like it may be it

 

[Rollin Coal]

thats a half marmon flange, the full marmon flanges are usually just made out of 16g tubing. Shoot me a pm with a good pic of the turbo and I can get you the flange.