Thread: 4JB1 Questions

Originally Posted by 123rover50

I have been given this engine. The Bloke that gave it to me said its near the same as a 4BD1 but a bit of Google tells me its a 2.8 litre direct injection industrial motor. The tag says 4JB1PA-06.
It is NA. Can it be turbo,d like a 4BD1 and are turbo,s and manifolds available.
It has a funny looking flywheel and housing.
I am wondering what I can use it for as its probably a bit small to swap out the 3.9 in my wifes Sherwood.
Any Ideas?
Didiman.

Yes they will handle a turbo. Check that it is a domestic (non import) engine - it will have timing gears if it is, and a rubber belt if an import.

I have posted a few threads on 4JB1s and 4JXX series engines.

The only real similarity with the 4B engines is they are made by isuzu and so very reliable.

They work well in a Rangie (with a turbo). Equivalent or better performance to a Tdi or 2.8TGV.

I'm fairly certain the 4jb1 is the motor that was found in Holden rodeo's and early jackaroos. There is a kit that you can buy from the uk that will bolt it up to discovery series 1 and rangerover V8 autos. I believe they did do a turbo version of it.
Cheers
Josh

Originally Posted by josh aka sean

I'm fairly certain the 4jb1 is the motor that was found in Holden rodeo's and early jackaroos. There is a kit that you can buy from the uk that will bolt it up to discovery series 1 and rangerover V8 autos. I believe they did do a turbo version of it.
Cheers
Josh

Yes it is - it was fitted to rodeos, jackaroos, small isuzu trucks, and a range of OS isuzus (some were imported here - I think the Isuzu MU is in this list...). The imports have a rubber belt instead of gears.

There are 2 companies in the UK who make adaptors and conversion kits. M&D is one of those:
Land Rover conversions - M&D Engineering

Looks like an SAE industrial flywheel and bellhousing too.

Hi Dougal. Saw one of your posts saying they are inclined to get a leg out of bed.
They dont rev that high either and the manifolds look restrictive. Huge big injector pump setup. Would this model be worth putting a turbo on and playing with?