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All--

First post. I'm going to get rid of the 4.2L Rover gas engine in my 1995 Range Rover Classic and put a Isuzu diesel in it. M & D Engineering (UK) makes a conversion kit for the 4JBx and 4JGx need to mate with the ZF4HP22 tranny. However, the M & D conversion kits require a 'modified' flywheel which I'm sure I can do... but not if the engine comes with a flexplate.

I'm not an expert on diesels nor Isuzu, but it seems like it is likely to have a flywheel so it's interia can help smooth out the pulses from the Deisel. That said, I don't know... and hopefully others on the forum can share the answer. :)

Thanks,
Ron
 

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I think I saw a cast flywheel with a flexplate bolted to the back of it. It's quite chunky for a flywheel that size.
It was almost two years ago so I can't be that certain.
 

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All the 4H series Isuzus that are fitted with an automatic transmission have a very light (by diesel standards) flywheel sandwiched between the flex plate and the crank. These flywheels do not have a machined surface for a clutch.
 

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And like the 4H's ASTR mentioned, the 4JG2 automatic flywheel won't take a clutch either. It's auto or manual specific.
 
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