Originally Posted by rang0
What transfer case are you running? I was planing on flipping the diff and using a rear diff center so the crown wheel isn't back ward so i can keep my set up. I've alread spent a lot doing the 8.8 and by the time I've spent money on the gq diff i could have a built d30.
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I've got a Dana 300 with NWF billet gear reduction in front of it for a dual transfer case setup. See post #6. It bolts directly betweem all TJ gearboxes (and AW4's) and the D300 without any adapters... pretty trick aye.
If you flip the rear diff centre, it'll run backwards. The crownwheel relief in the housing will be on the wrong side when flipping a housing which means the pinion would turn any crownwheel the wrong way. It's easy to clearance the housing to put the crownwheel relief on the other side but you'll need to weld the stud holes, machine the face flat and re-drill and tap the stud holes. I've seen some Hilux guys do it but more of the studs line up on them.
I spent some money on my HP30 and 44 setup too but I sold them for a decent price and it covered the purchase of the Patrol diffs, chromoly axles, front locker and new bearings.
It'd be weird running the 5x4.5 rear wheel pattern and the 6x5.5 front wheel pattern. Plus, you'll have the GQ rear diff in for less than what the 8.8 will fetch... Rear Patrol diff = $150, front centre (if going for a rear high pinion) = $80, shim for rear LSD = $8, shaved centre = $5 in scrap plate, brackets and coil seats = $150. Total = $393 total for a strong rear with high pinion, awesome LSD and 33spl axles. They don't have the handbrake on the rear though so I'm planning to put my Subaru Leone calipers on the rear discs so I'll have a real handbrake = another $180 for calipers and pads. Cables look like they'll fit right up.
A built 30 will never be close to the same in terms of strength, let alone the manual locking hubs, bigger brakes and no inverted Y steering... This was my reasoning anyway. A 30 will be easier to build and is less likely to attract the attention none of us want. The D300 was my main reason for going the Patrol diffs and, due to the much lower gearing, and therefore increased torque, the extra strength will be needed.