'03 CTD Turbo Part (HOLSET) Needed??

[Andres]

So I'm working on the exhaust on my '03 HO CTD in my H1 Hummer. The turbo's exhaust includes the turbo connected (with a band clamp) to a 45 degree elbow (cast) made by Holset. Basically this 6-8 inch long elbow is part of the turbo, just past the wastegate, and it goes between the Stainless exhaust, and the turbo bod - with clamps on both ends.



What I want is a straight peice of pipe, 6" long with the same "Holset" ends so that the exhaust bends down at the proper angle. So it will go straight back before bending down, clearing the transmission. It's not going to be easy to have exhaust bent to go to the stock turbo, since the hummer frame is 8" narrower than the Dodge's.



What kind of pipe or connection is this? I thought about having it cut past the clamp point and a peice of pipe welded in, but I dont know how practical and possible that is.



Any Ideas?



Thanks!

 

[HoleshotHolset]

The flange on the turbine housing discharge that mates to that cast piece (with the more prounounced flange on the other end... ) looks almost like a regular V-band flange. The only exception is that it is different than an old-fashioned/normal V-band flange. The flange is beveled towards the outside... and it is thicker than usual - this is the bummer.



*Maybe* you can use a regular V-band flanged piece of pipe. That's what I'm hoping to do with the HY-30 used on my ISB-170. When I can't do that - I'll swear for a few minutes and then have to come up with a backup plan.



Perhaps a medium-duty truck uses a piece of exhaust pipe bolted to the back of the HY-35... check out what an F-550 with a Cummins ISB uses. Since the cast piece wasn't included with my engine when I bought it... I'm inclined to believe that it just had a piece of exhaust pipe bolted directly to the turbine discharge. Most salvage yards leave the cast piece in place if so equipped - that's how I've seen most of the used ISB's at the junkies anyhow...



Matt