Got to ask as the Garrett folks seem to be ignoring me. Anyone have any of the old data sheets or charts for A/R on older Air Research T04 series units. My old Allis has a T0448 p/n 408270-3, been scouring any and all sites with similar setups for Allis and close is all I get but nothing defined or cross reference confirmable. Can get a decent priced NEW from Steiner parts is a T04B80 but have no clue if too little or too much boost or lag.
What's amisss with the T0448?
Turbines on both sides eroded heavily, showing signs of internal oil leakage, exhaust housing at a severe level of corrosion inside and out.
Sounds like it's had a rough life, at least the replacement is a t04 will peek around for a parts list by model. Turbomaster.info has some references, to4b looks like a detroit
Rebuilding it is out of the question w/what you've described.. parts alone would cost as much or MORE than an exchange.. Call Andre' at turbo exchange in NC.. Have all your #'s at the ready.. turbo, engine model & sn, application, whatever you have to make it easier for him to look up.. He'll treat ya fair..
Will give him a shot.