75 series landcruiser cummins 6bt conversion

[Stevewalker5130]

Hi guys new to ih8mud today. So im looking to put a cummins 6bt in my landcruiser which is an 89 75 series with a 2h diesel with aftermarket turbo engine and i have a few questions. For starters is the gearbox and drivetrain strong enough and if not from which landcruiser should i use? Also i have a friend who makes conversion plates to go from 6bt to an 80 series gearbox is this box the same fitment as mine and if not can i run an 80 series gearbox and transfer box onto my 75 series axles without causing any dramas. Please forgive my ignorance im pretty new to the scene so im not scared to ask simple questions so i can learn so any help would be greatly apreciated

 

[Gun Runner 5]

You might find the answers you seek here ..... Diesel Tech / 24 volts

 

[Stevewalker5130]

Thanks mate

 

[Gun Runner 5]

There may also be some useful information here ..... Diesel Transplanted 80 series Registry

 

[coldtaco]

the 80 series transmission/transfer are bigger so you will have to most likely massage some parts under the floor to get them up as high as possible.

 

[divemedic]

Is your truck lifted? You'll need a bit of room to clear the tall engine.

 

[Stevewalker5130]

Yer its got 4 inch suspension lift but it doesnt need any really the actual physical measurments of the 6bt are basically exactly the same as the 2h 6 cylinder thats in it as standard

 

[chappohj47]

Sump with hit the diff unless it is lifted

 

[60toyetero]

12v+ NV4500 make sure dowel pin is tapped and 5th gear nut is locked. That will be a dreamy rig! document your work carefully and tons of photos so I can go after you

 

[PhrogsPhorever]

12v+ NV4500 make sure dowel pin is tapped and 5th gear nut is locked. That will be a dreamy rig! document your work carefully and tons of photos so I can go after you

x2. If you are going to put the 6BT in, might as well go NV4500 as well. Advanced Adapters makes a plate for the factory split-case you have. Maybe upgrade the gears in the split case with a set of Mark’s 4WD low gears.

What gearbox is currently in there now? Manual or shush-box? 4-Speed, 5-speed?

 

[Stevewalker5130]

 

[Stevewalker5130]

Its a 5 speed manuel in there at the moment its the standard 2h gearbox you think that will he ok?

 

[ozcrusier]

The gearbox will be fine but 5th gear is the weak link in the 5 speed when towing.

 

[Stevewalker5130]

Ah that shouldnt be a drama i never tow anything i only use it to commute, 4wding, and carrying my motocross bike so should be fine?

 

[ozcrusier]

After checking out the video above you will probably need a body lift as my 12ht only just fits under the bonnet on my hj75 with the turbo pipes.