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Thread: What gearbox to use behind a 4jb1t?

  1. 26th March 2016, 06:28 PM #1
    00quattro00
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    What gearbox to use behind a 4jb1t?

    I have a 4jb1t here that im wanting to fit to my 110. What gearbox should I use? I currently have a lt77 but am not liking the look of it, neither the r380. I have an msb5 gearbox from an isuzu truck that originally had a 4jb1 in it but its only rated for 230nm. Im not sure if it being made for a truck it would last behind a modified 4jb1 (aiming for aorund 450nm). They have 88mm gear centers. I would also have to adapt/divorce the transfer box, make mounts and shifter which I dont mind doing for a box thats going to last. Would rather just do it once.

    Any other boxes I could use?
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  2. 26th March 2016, 07:09 PM #2
    dingsy
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    Quote Originally Posted by 00quattro00 View Post
    I have a 4jb1t here that im wanting to fit to my 110. What gearbox should I use? I currently have a lt77 but am not liking the look of it, neither the r380. I have an msb5 gearbox from an isuzu truck that originally had a 4jb1 in it but its only rated for 230nm. Im not sure if it being made for a truck it would last behind a modified 4jb1 (aiming for aorund 450nm). They have 88mm gear centers. I would also have to adapt/divorce the transfer box, make mounts and shifter which I dont mind doing for a box thats going to last. Would rather just do it once. Any other boxes I could use?
    I have read about the ZF auto being used - that's what I'd look at first.
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  3. 1st April 2016, 02:42 PM #3
    00quattro00
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    Not realy keen on an auto,
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  4. 1st April 2016, 03:26 PM #4
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    Vern
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    Would have thought a late r380 would have been fine and easier.
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  5. 2nd April 2016, 11:30 AM #5
    00quattro00
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    Quote Originally Posted by Vern View Post
    Would have thought a late r380 would have been fine and easier.
    380nm torque rating is fairly low. Unless they will actually handle a bit more?
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  6. 2nd April 2016, 11:48 AM #6
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    Vern
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    Whats a 4jb1 put out? Surely not a lot more than a td5 or 3.9v8?
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  7. 2nd April 2016, 04:57 PM #7
    00quattro00
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    Quote Originally Posted by Vern View Post
    Whats a 4jb1 put out? Surely not a lot more than a td5 or 3.9v8?
    Its not standard, its actualy turned into a 4jh1 (3l version) with the mechanical pump and a vnt turbo from a 3l bmw diesel
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