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  1. 4bt Cummins flywheel

    Cummins Tech Section
    I think I would see if I could get the Cummins/Ford flywheel to work within the bolts and dowel pin locations of the Jeep/AMC bell and if so just locate the Cummins/Ford starter where it will engage the ring gear on the Cummins/Fore flywheel.......
  2. 4bt Cummins flywheel

    Cummins Tech Section
    The Cummins/ford starter is NOT compatible with the jeep's NSG flywheels ring gear..:(
  3. 4bt Cummins flywheel

    Cummins Tech Section
    I had the 7.3 when running the Cummins/ford adapter the diesel ZF adapter uses the 6.0 starter. the 7.3 and 6.0 are very close in dimensions. The starter I have on the shelf is the factory one for the cummins/Ford setup.
  4. 4bt Cummins flywheel

    Cummins Tech Section
    I have a Jeep flywheel for the NSG and a Cummins ford starter on the shelf, I'll dig them out to see it the pinion gear pitch is compatible with the Jeep ring gear if it is then all you will need to do is the math to get the right standoff and lash for mounting it to your adapter.
  5. 4bt Cummins flywheel

    Cummins Tech Section
    The Cummins/Ford adapter use a clutch disk that is compatible with the jeep input shaft, I'm not sure if the pressure plate has the right standoff for the NSG's slave cylinder to work but if your making the adapter itself then Id "think the Cummins/Ford flywheel might be what you could start...
  6. 4bt marine turbo

    Cummins Tech Section
    The unlimited cooling potential is one reason the marine engines came in higher tunes from the factory, I was just trying to point out that cooling was my only limiting factor for pushing it hard. ;)
  7. 4bt marine turbo

    Cummins Tech Section
    I can not truly speak to a marine application but to get the best fuel efficiency If it would still plane comfortably with it backed off to 2,000 would be ideal. I'm running compounds with a 42mm HX-30 and a Wh1c with a VE pump and 5x.012" injectors, I run it pretty hard but it never sees above...
  8. 4bt marine turbo

    Cummins Tech Section
    This may well be a apples to oranges comparison, BUT I routinely run my 4BT at 2,000 RPM for hours at a time when making a road trip here in the Southwest U.S. with temps varying between 20*F to 110*F. The limiting factor I have faced is coolant temps in the summer time, looks to me like I...
  9. 4BT Fan Mount Options

    General Discussion
    Bolts straight to the head/block with the shiv correctly offset
  10. starting and fuel shut off solenoid

    General Discussion
    https://www.4btswaps.com/threads/battery-specs.1391/
  11. 4BT Fan Mount Options

    General Discussion
    This is what they come with the Clutch assy> is held on with a large socket head bole that mates ti one of the two large threaded holes. the other pic is the best I could find of how I mounted mine...........All my build pics are now on two drives that crapped out so till I can find someone to...
  12. 4BT Fan Mount Options

    General Discussion
    This is another option it was marketed to bus fleets,it is basically the same type of electric clutch that is used on A/C compressors that is switched by a generic electric fan switch. I have been running one for the last couple of years with a 20" 10 blade fan and have been pleased with the...
  13. starting and fuel shut off solenoid

    General Discussion
    Smart man.................the key to happiness is knowing when to say WITH FEELING "yes dear your RIGHT"
  14. starting and fuel shut off solenoid

    General Discussion
    I have a block heater as well but since adding the grid heater I only worry about it when I know it's gonna be REAL cold seeing as we have a lot of property and the trucks place in the shop has been taken over by the Wife's new car..........:(
  15. starting and fuel shut off solenoid

    General Discussion
    My '88 CPL 767 does not have one either and with a single battery starting it started right up last week at 07:00 with it 18* after holding the grid heater button down for 10 seconds.
  16. starting and fuel shut off solenoid

    General Discussion
    In my truck the fuel tank is above the lift pump and I have noticed that bleeding the system consistently takes MUCH less time/drama then what most seem to report, I have always chalked this up to there being a little head pressure to the lift pump. If my tank is completely full I can crack the...
  17. Best turbo option for me.

    Performance Discussion
    This is 3" welded to the flange for the HX30/35
  18. Best turbo option for me.

    Performance Discussion
    Here is a 3" SS 90* with a 3" bend radius I used welded to a flange it to get it to work ina tight application https://www.summitracing.com/parts/vpe-13053/overview/
  19. Cracked motor mount on JK

    General Discussion
    In Texas I would find a GOOD oil patch machine/weld shop and have them make them, those shops are familiar with doing odd work and their own engineering If your alignment is good where it is have them just do one side at a time with it sitting in place.........$.02
  20. 4BT piston lift pump spring questions

    General Discussion
    When I added mine I had to replace the 4.5mm ID o-ring that seals the fuel pin follower in the AFC housing, it had been in the pump for ~ 100,000 miles and was pretty hard so was a weak point to begin with.......
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