Slant 6 Turbo 68Dart Project

Well Brandon, once I find out some more info on the turbo I can let you know. I bought it in the blind, only knowing it is a t3/t4 turbo from China. The exhaust runs 2 1/4" from the manifold to the turbo, then leaves at 3" for about 2 feet, then it goes to 2 1/2" all the way out the back.

Chris, yes, I do believe there is a leak somehwere, and I know this because I see black exhaust black stuff all over the drain hose on the bottom of the turbo. I believe either my weld is porous and leaking or the gasket is - I used the metal gasket and I don't believe it seals very well. I'm still working through this. I kind of wish any one of you guys lived nearby so you could come over, drink a beer, and tell me what a dumbass I am while you pick out something super easy and obvious that I am just missing and help me fix it... :D

But I am dissasembling the piping soon, going to an exhaust shop and he's going to rebuild my downpipe for me and move the 02 sensor around, so it will look better and not have as sharp of a downward angle on it, because I have it exiting the turbo, making a 45* downward bend instantly, then another 45* bend to point it straight down, then a gradual swoop to the rest of the exhaust. I did the two 45s and he thinks it could be causing a restriction and he wants to make up something cool that goes out, then makes a gradual curve down to the rest of the exhaust. He's a much better welder and metal guy than I am and they build a lot of custom turbo setups so I think he's got a hold on it.

The turbo I found as a replacement for the inevitable failure of the China turbo is a Garrett T3 Turbo by Airesearch. It was for an OM617 W123 300 Mercedes turbo diesel. my understanding is the car made low HP - like 85 or something, and I would assume this turbo does all of its work at lower RPMS, which would be good for my driving style. I don't rev high, and the turbo doesn't start making boost till 2500rpm or so. I'd like it better if it kicked in around 2000.