Thread: Is this a Series three Stage 1 3.9 Isuzu

Originally Posted by isuzurover

Very little chance it will bolt straight up to a LR (isuzu) bellhousing. The 4BD1s fitted to landies had a special flywheel etc...

Paulthepilot has a 4BB1 in a series 3 which uses the isuzu box mated to a series t-case.

S3 Transfer case, Help Needed!

I once tried to buy a 4BB1/4BC1 (can't remember which - was negotiating to buy it sight unseen) which had an adaptor plate mating it to a series 3 gearbox.

Well Ben
looks like a bad mistake ask question 1st in future I suspect.
Thanks
Garry

G'day all

My $0.02 worth.

The exhaust manifold looks like it is fabricated and was probably custom made for the job.

The early (pre early 80s) trucks with 4B engines all had the bare tappet cover.

The 4BB1 has the same flywheel and flywheel housing as the 4BD1. If you can find an Isuzu/LR flywheel and housing it will bolt up to the back of your block just like a 4BD1.

The block drillings for the engine mounts are the same. The blocks are basically the same as the 4BD1 except for the height from the crankshaft centreline to the top of the block. The 4BD1 is about 20mm higher.

The 4BB1 is a good engine. As noted earlier it is a bit lower torque than the 4BD1. Max rpm is 3200. The 4BB1 should handle a turbo OK.

All of those earlier 4B engines were very noisy. Even though the 2.8 litre 4BA1 was indirect injection, it sounded like a bucket of bolts when it got going.

I had a 4BB1 in a HQ Holden a few years ago and replaced it with a nearly new 4BD1. The 4BB1 was noisy as hell but gave great fuel economy.

Regards

Phil

Sorry, forgot to say in the last post - the 4BA1 block is quite different to the 4BB, 4BC and 4BD.

4BA was indirect injection
4BB, C and D were all direct injection.

Originally Posted by Phil Stage 1

Sorry, forgot to say in the last post - the 4BA1 block is quite different to the 4BB, 4BC and 4BD.

4BA was indirect injection
4BB, C and D were all direct injection.

Presume the differences in the block would be unrelated to the injection type. The 4BD2 is indirect injection and uses exactly the same block as the direct 4BD1.
Isuzudieselswapper built a 4BD1T using a 4BD2 block, the photos are on his website.

Originally Posted by Dougal

Presume the differences in the block would be unrelated to the injection type. The 4BD2 is indirect injection and uses exactly the same block as the direct 4BD1.
Isuzudieselswapper built a 4BD1T using a 4BD2 block, the photos are on his website.

On that note, the 4BC2 was still direct injection wasn't it?

Originally Posted by garryseries3

Hi Garry
Not quite so 300 Tdi after 200,000kms require more minor rebuilds(c.f isuzu motor) it seems which translate into more time off the road and this is my work vehicle. It is always hauling around 1-1.5 ton of gear and more and its a 130 Dual Cab, that a lot of steel and alloy to shove around tho roads constantly. Don't get me wrong the Tdi is a great motor its just I have to have it on the road and I have pondered about small diesel motors and their longetivity and long term costs to maintain. There would be far more isuzus that have done close to a million kms than Tdis without minor and major works beyound general serving to keep them working efficently and reliably. I stand to be abused on that point but I think I am right. This is a previous thread there are some great points made in it both for Tdis and for Isuzu. Eny meny miney mo which diesel motors the go I found it a great source of understanding these engines tolerances and abilites.
Kindest regards Garry

I would agree if you had a 3.9 turbo isuzu already to go in but it seems you have another engine that produces about half to 2/3 the power of a 300 tdi and probably less torque - I think the idea of a 3.9 in you vehicle is a good viable option.

Good luck with the project.

Cheers

Garry

Originally Posted by Phil Stage 1

G'day all

The 4BB1 was noisy as hell but gave great fuel economy.
Regards
Phil

Hi Phil
How did the economy of the 4BB1 compare to the 4BD1 and did the former have less torque impulse when at idle?
Kindest regards
Garry

Originally Posted by garrycol

I would agree if you had a 3.9 turbo isuzu already to go in but it seems you have another engine that produces about half to 2/3 the power of a 300 tdi and probably less torque - I think the idea of a 3.9 in you vehicle is a good viable option.

Good luck with the project.
Cheers
Garry

Garry thanks for that info on the torque compared to a 300Tdi it was something I was goig to put up tonight as I was unsure. I am not sure what to do at present with the 4BB1 less torque does not translate into a better motor for me. Although if I was to put a turbo on it would you think that would get me more power/torque than my Tdi.
Kindest regards
Garry