Thread: Isuzu starter motors

Much appreciated Dougal.

Mine is a two bolt truck engine, so looks like I'll be OK with a nine tooth. I have to remove the engine later this week and disconnect it from the gearbox, so I'll figure some one way holding the throw out on the motor so I can hand crank to check smooth operation in the ring gear.

The flywheel I got from wreckers had a different tooth count to the original Landy flywheel. (can't remember numbers sorry) the wreckers one had a badly damaged gear from loose starter. I end up using the Landy flywheel and a two bolt 12v truck starter front different truck. So I would suggest mix n match is ok, but don't know what tooth count I'm running. I just ran the gears round each other while out of vehicle, seemed smooth, crossed my fingers and it worked.

Tried following up on Dougals comments about tooth count differences and found this link - with Dougals finger prints all over it of course Not sure if its what Dougal is referring to. May not really help much as it compared the 6bd1 and 4bd1 fly wheels, unless of course they were interchangeable, depending to which country the NPR truck was sent ie US or Oz.

6BD1 vs 4BD1T Flywheels and Housings

Dougal, you mentioned wanting a heavier fly wheel. In that link, it talks of the compatibility of the 6bd1 flywheel to the 4bd1 engine and that it is heavier than the original 4bd1 flywheel. Have you considered it - down side? ie not commonly available, machining required, to big for the bell housing?

PS just done some more reading. You mentioned this "The Australian 4BD1 and 4BD1T landrover market however is just getting around to fitting Isuzu OD gearboxes as the landrover items get more and more scarce A heavier flywheel for them will be snapped up, especiall since many have landrover flywheels fitted and need an Isuzu replacement anyway". Is the truck engine flywheel different to the LRover supplied fly wheel in terms of weight? http://www.4btswaps.com/forum/showth...ywheel-Sources