Wanting to install a 6.5 to replace my zd30

[Truckus]

The greatest issue with the Cummins conversion is the weight over the front axle. A guy in Shepp had one and was selling kits for the conversion, and when his went thru engineering it 'only just passed' with a factory front bumper and no dual battery system. There is an option from a mob in QLD that manufacture a totally new, double tube from axle housing assy that lifts the front axle load rating by 500KG, but that's another $4300 from memory, and only really for the GU unless you are already running the GU axle/diff housing in a GQ. They don't do rears either, so maybe this is another component if you want to run the bulbar,winch,dual batteries etc.

That info is consistent with what I have read to PB. evidently the 6.5 turbo intercooler set up with donkey weighs in at just under 900 lbs all up, where as the 6bt with turbo and fruit is 1100 lbs.

The answer from the engineers is basically a GVM upgrade all around, and for the axle loading the portal axles from Marks do the trick there (and this needs doing also to get over 35s engineered as well up this way) that ups the GVM to 3780Kg , plus what ever else has been done with suspension and brake set up.

https://www.marks4wd.com/patrol-portal-axles.html

Not that my rig has much load over the front axles right now and likely wont have until the end if next week if I am lucky.