The 'Search' menu on the top of the screen will yield all your answers.

 

The search tool doesn't allow me to find out the differences between the engines.

 

Using Google I believe that the:
4B is naturally aspirated
4BT is the Turbo model
4BTA is after cooled Turbo model
If I am incorrect please correct me.

 

Correct. But, know nothing about isuzus.

 

I know a bit about the Isuzu's. However I was wondering if any one know what are the major differences ( Cummins V's Isuzu), many reliability.

 

I know a bit about the Isuzu's. However I was wondering if any one know what are the major differences ( Cummins V's Isuzu), many reliability.

Is that 'mainly reliability'?

If so there really isn't one (from what I've seen) if you are anywhere close to stock.

It seems to depend more (greatly so) on how they were operated and maintained. At least 4BD1T V/S 4BT. With the 4BD2 (series) there are reports of cracked cylinder heads. But then from what I hear, it's only a problem if you get it too hot which ties back in with how it was operated and maintained (dunno when it came in but the 4BD2-TC in my NPR has a feature that dummies out the altitude compensator to partially defuel the engine if it starts running hot, dunno if the later Cummins had an equivalent or not).

FWIW (and to be up front) I am looking into retrofitting the 4BD1T head (injectors, etc) onto the newer engine, because I want to tweak it up a bit. I have no way to proove that is a more durable combination, just rumor and speculation (till somone publishes data on it).

Here: http://4btswaps.com/forum/showthread.php?t=6754

 

thanks. mainly was correct.
I just whanted to check also that the 4B's do have a Chevy trans pattern as I am intending to use a Marks 4wd adapter.

 

Did you look in the tech setion ?

http://www.4btswaps.com/forum/showthread.php?t=1076

All the info you need about a 4bt is all right here.

 

What the A?

Saw an ad on Fleabay that said they had a 4BTAA. What does the last A meanuke:

 

Someone correct me, but the last A I think is for the P-7100 pump. Rare motor, would like to have one.

 

The last A stands for nothing ! It's only listed that way because they think the A stands for inline .There is only 4b ,4bt and 4bta , the A stands for after cooled air to air or water to air . They have been listing them on Ebay for some time but it wrong .


The P 7100 are hard to find but we will start seeing more of them soon ,because of the age .Also we will start to see more ISB 4cyl as well .

Scott

 

Also we will start to see more ISB 4cyl as well .

Scott

Yeah, there should be a whole S*** load when DHL starts liquidating it's fleet! :dustin:

 

Except that 90% of DHL's fleet is owned by private subcontractors....... Plus, 90% of those are E350 Ford vans...

 

Ouch... those people are F*****! Around here (Bay Area) they use newer P30 style vans with diesels. Never got to see if it was actually an ISB under the hood, but the one in my neighborhood hauls ass up the hill in front of my house that has most diesel trucks (and bicyclists) wishing for lower gears.

 

I think as far as reliability is concerned the two engines are about equal. The isuzu is a little quieter and supposedly vibrates a little less. The main difference is that the exhaust and intake are opposite of the cummins on the isuzu, ie: the cummins has the exhaust on the passenger side and intake on the drivers side and the isuzu is opposite of that which can make for some awkward exhaust routing if your steering linkage is close to the engine.

Personally I was looking for the cummins but wouldnt pay the outrageous prices I was being quoted locally so I found a cheap almost newly rebuilt isuzu 3.9 4bd1t and went with it. I would suggest you do lots of research on both engines then make your own informed decision.

Randy