So another hobby of mine is working on old military trucks. One of them in my collection is a M35A2 turbo charged multi-fuel truck.
From doing some research, it has a Switzer 3JL-319 turbo, which seems to be a S300 based turbo, 60-61mm inducer, and a 70mm hot side. I find with this truck, and others I've run, spool ok, but seem to run outta grunt after 2000-2200 rpm. After that, it's just making rpm and noise, but feels like it falls flat on it's face. I like to run mine out to 2500-2600 rpm.
Ideally, I'd like to work this one over, or change to one that will lights around 1800-2000 and keep going till 2600 or so.
I'm not a turbo guy in terms of specs, and haven't a clue what the exhaust housing size is. Any ideas how to accomplish this? It's a T4 flange, so other than trying to keep boost psi down to 10-15psi, to save head gaskets, looks like its pretty easy to slap anything on and make it work. Even the oil drain flange looks like what's on a holset off our trucks
I should mention turbos weren't added for performance, they were added as emission equipment to clean up exhaust smoke, as N/A multi fuels smoke terribly bad