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  1. FL cruiser

    4BD2T J60 TI Another Isuzu Conversion

    Currently running 15lbs of boost, EGTs top out at 1,400 deg F going up a steep grade. I do remember having to drop down to 3rd gear/40MPH in a few places, but went up many grades in 4th gear. It couldn't quite keep up with a friends stock FZJ80 we were following, but I feel it would would be...
  2. FL cruiser

    4BD2T J60 TI Another Isuzu Conversion

    Not really much I'd do different. Still very much like it, and would do it all over again. I might have opted for an NV4500 over the H55. The only reason is that is the teeth of the H55's input gear came off once about 2,000 miles from home. I have since found out that it's a common...
  3. FL cruiser

    4BD2T J60 TI Another Isuzu Conversion

    Brake booster is a GM Hydroboost. Not sure how a stock brake booster would clear the turbo because I was using the Hydroboost before with the old engine. The Isuzu does come with a vacuum pump built in the back of the alternator. There are some very small 7" dia aftermarket brake boosters...
  4. FL cruiser

    4BD2T J60 TI Another Isuzu Conversion

    I don't think i can answer your question very accurately because I haven't driven any Isuzu NPR trucks. Too bad we don't live closer so we could compare. The truck does vibrate some at idle. Enough to where the mirrors flutter on the doors, and the steering wheel shakes some when it's cold, but...
  5. FL cruiser

    4BD2T J60 TI Another Isuzu Conversion

    All accessories and belts complete. Ready for the final radiator install. Got some mandrel bends to build the exhaust. 3" wouldn't fit between the motor mount and starter, so had to go with 2.5"
  6. FL cruiser

    4BD2T J60 TI Another Isuzu Conversion

    I'll let you know. Hopefully this weekend I fire it up. Overall it's 27" X 19". Core size is 22" x 19". Had to notch out and modify the frame corner brackets. Between that and the pre existing 3" body lift, the radiator would have been too tall. I used the Mitsubishi rubber mounts and...
  7. FL cruiser

    4BD2T J60 TI Another Isuzu Conversion

    Today made radiator brackets, a fan shroud and intercooler brackets. The Toyota fan bolted right up to the Isuzu fan clutch. Plenty of room in the front of the engine. The radiator does sit a ways behind the radiator support.
  8. FL cruiser

    4BD2T J60 TI Another Isuzu Conversion

    The adapter plate itself is only 1" thick. The Isuzu bell housing is deep and the flywheel surface is probably 4 or 5 inches deeper than the bell housing surface. The adapter cone that goes between the Isuzu flywheel and the Chevy flywheel is probably4 or 5 inches thick. I would estimate the...
  9. FL cruiser

    4BD2T J60 TI Another Isuzu Conversion

    I really wanted to since mine is almost new and they have great cooling capacity. BUT, there wasn't enough room between the radiator and grill for an intercooler i could find. Even if the radiator got positioned back, it would require a custom very wide intercooler that the hoses would...
  10. FL cruiser

    4BD2T J60 TI Another Isuzu Conversion

    No Duh!, I think I was sleep depraved when I posted. The Isuzu fits incredibly well in the 60 The only clearance problems was that the turbo and hydroboost were competing for the same space. That was aleviated by rotating the hydroboost upside down. The motor mounts were way...
  11. FL cruiser

    4BD2T J60 TI Another Isuzu Conversion

    Yeah, It's for on board air. Filling tires, running air tools, etc.
  12. FL cruiser

    4BD2T J60 TI Another Isuzu Conversion

    Spent the last couple of months putting together and rebuilding an Isuzu 4BD2T to install in the Battle Wagon. Buildup Thread 4BD2T Buildup - Cummins 4BT & Diesel Conversions Forums The engine and drive train is finally ready to drop in. Gonna be a busy weekend. It's been raining for days...
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