DanS HJ-45
SILVER Star
OK, in the process of getting the big 40 project done, I pulled the turbo off of the manifold. It had a few issues, so I figured I'd generally replace studs and clean it up.
In the process, a lot of things broke. Exhaust studs (worse I've ever seen, welding a nut onto them didn't work--they snapped between the nut and the case), a banjo bolt (don't even know how THAT happens)....
So, I decided to take it into the local Garrett dealer to see if they could rebuild it. The engine had a Safari turbo kit on it from Australia (the PO installed it), but the turbo shop basically said it was a T3 variant, but with all sorts of wierd stuff on it. No ID numbers left on it, so no real idea about it's trim, A/R or anything other than it being a T3 of some sort (it does have "M4" cast into it).
And the way the two halves were mated together makes it pretty much un-rebuildable. So, for now, I can make it work, but in the long run, we need to be ready to replace it with something more standard.
So the question is, what T3s make sense for the 3B? It lives at high altitude, and sees a lot of highway miles. I'm definitely interested in the GTX line, too...
I see that GTX3582R, GTX3076R, GTX3071R fit, with options of a turbine A/R of 1.06, 0.82, or 0.63, and looks like the differences between those three at the compressor A/R 0.60 (GTX3076R and GTX3071R), 0.70 (GTX3582R).
So, opinions, comments, ideas? I see that all of the GTX line are free floating, non wastegate turbos, which is something I don't know anything about. Not sure if I should be concerned with that or not. External wastegates seem complicated by comparison to me, and I'm not real sure where we'd tap into the manifold for that either.
Dan
In the process, a lot of things broke. Exhaust studs (worse I've ever seen, welding a nut onto them didn't work--they snapped between the nut and the case), a banjo bolt (don't even know how THAT happens)....
So, I decided to take it into the local Garrett dealer to see if they could rebuild it. The engine had a Safari turbo kit on it from Australia (the PO installed it), but the turbo shop basically said it was a T3 variant, but with all sorts of wierd stuff on it. No ID numbers left on it, so no real idea about it's trim, A/R or anything other than it being a T3 of some sort (it does have "M4" cast into it).
And the way the two halves were mated together makes it pretty much un-rebuildable. So, for now, I can make it work, but in the long run, we need to be ready to replace it with something more standard.
So the question is, what T3s make sense for the 3B? It lives at high altitude, and sees a lot of highway miles. I'm definitely interested in the GTX line, too...
I see that GTX3582R, GTX3076R, GTX3071R fit, with options of a turbine A/R of 1.06, 0.82, or 0.63, and looks like the differences between those three at the compressor A/R 0.60 (GTX3076R and GTX3071R), 0.70 (GTX3582R).
So, opinions, comments, ideas? I see that all of the GTX line are free floating, non wastegate turbos, which is something I don't know anything about. Not sure if I should be concerned with that or not. External wastegates seem complicated by comparison to me, and I'm not real sure where we'd tap into the manifold for that either.
Dan