Cummins 4BT & Diesel Conversions Forums banner


  1. 4BD1/4BD2 Manual flywheel same?

    Transmission, Adapter, Transfercase Discussion
    Looking to see if anyone knows if the Isuzu 4BD1 and the 4BD2 manual flywheel are the same? I have a 4BD1t with manual bellhousing and just found a flywheel from a 4BD2. hoping these are interchangeable. Thanks for any and all help!
  2. Looking for a JR403E - came behind the 4BDT1/2

    Want to Buy
    I have a motorhome with a toasted tranny, need one of these ASAP! I don't mind paying shipping. If anyone has an NV4500 2WD laying around with an adapter kit for that engine, I may be interested in going that route.
  3. Newbie Questions - So many threads, my head hurts

    Isuzu 4BD1T/2T
    Thanks for indulging me. I've been reading all over the forum and getting a great deal of info, but several questions have come up that I haven't easily found an answer. I'm a novice with diesel engines, but well versed in all manner of gas and propane fueled engines. I appreciate constructive...
  4. Oil Pump on 4BD1

    Isuzu 4BD1T/2T
    Can the oil pump from a 4BD1 be used on a 4BDT2 with no issues?
  5. 4bd2t swap into a 1994 chevy suburban.

    Isuzu 4BD1T/2T
    Hello everyone, its been along time since I posted. My last posts were on a 6BT swap I did on a 1996 Chevy truck. That turned out very well. I have sold that truck and had the bug to do another swap. I thought about a 4BT, but wanted something different this time and started researching my...
  6. 4bd1t / 4bd2t oil squirters

    Want to Buy
    Hi does has anyone have a set of oil squirters kicking around am trying to locate a set. Cheers Garry
  7. 4BD2 auto to manual conversion?

    Isuzu 4BD1T/2T
    I am doing a project with a 4BD2 to repower my M37 Dodge. I took the BD2 with auto from an NPR. I scrapped the auto trans and bought an Isuzu NPR 5 speed manual (with bellhousing, clutch, flywheel, etc.) from an BD2 (supposedly). I have found that the bellhousing for auto and manual appear to...