isuzu 4BD1T swap?!

[RHINO]

teaser/comparison pic

just a teaser of old and new engines on the floor, and also something to get an idea of overall size differences

 

[74TLC]

Chevy bellhousing casting 460486 is for a 12 in HD clutch if needing one to match up to the truck transmissions. The steel scattershields would be nice too but center hole would be the smaller car size to fit muncie or T10.

 

[Bennett]

I bought this Chevy scattershield that is mated to a Toyota 4 speed...it is indexed to fit behind a sbc ior bbc

how does one index a bellhousing to a motor such a a 4BD1T so everything is trued..would you use the sae pattern?

curious to know..

 

[RHINO]

read above bennett, its all here. all you need now is the adapter from David and some clutch parts and you can bolt it to the isuzu, but the lack of overdrive in that toyota tranny is not going to help you.

 

[bram]

Hi guys,

I am getting to this thread a little late so bare with me. I tried to read everything but I could have missed something.

Does anyone have detailed mechanical drawings for the back end of these isuzu motors, as well as the bellhousing? I am interested in designing an adapter for a stock fj60 drivetrain (with a H55F). I have access to a machine shop and friends who can work in ProE and autocad. I also know the owners of several machine shops here in MA. I think i can get the mechanical drawings made for free if I can just get my hands on the the dimensions of all the parts. If the part does not end up being too complex I can then make a test unit myself.

Other thoughts questions:
Does the isuzu swap require firewall mods for fj40s and fj60s?
Has anyone fab'd motor mounts for a fj40/60? If so, do you have some dimentions and frame locations? I would like to do mechanical drawings for these as well and look into having them manufactured.

I don't have a motor to try this on myself. Maybe if we can get the required information together someone someone here can be a guinea pig for the test unit?

Let me know what you guys & gals think,
Bram

 

[RHINO]

bram it sounds awsome !! i would love to be the guine pig but i am already too far in mine. if you keep the fan in the radiator like its supposed to be you will have plenty of firewall clearance and the motor mounts only need to move back about 1.5".

i thought about going with the H55 in mine, but figured i'd try the 5 speed out of a v-6 for cost reasons,

 

[bram]

Update:

Turns out I know a guy that runs a big diesel shop here in southeast MA. He has a 96 NPR right now that I can get real cheap. Im headed upt there tomorrow afternoon to check it out. At the very least I should be able to get the bellhousing for a few days so i can dimention it. So by the middle of next week I should have the data in Pro/E. Now i just need a 2F or 3F bellhousing to get the dimentions of the other side...

 

[PurpleFJ62]

sounds like a great idea. Having a dedicated adapter would make this conversion a snap. I will be doing mine with in a year or so, hopfully you will have it done by then. good luck.

 

[bram]

Update:

Yestarday I went to my friend's diesel shop. The motor in the 96 NPR is grenaded and not rebuildable. Bummer. But, he also had a grenaded automatic tranny for a 96 NPR just sitting around and he gave me the bellhousing. So now I have the piece I need to design the adapter. He also has a mitsubushi diesel which is basically identical in terms of size and ouput but uses a different bolt pattern on the bellhousing. Needs a rebuild but i can probably get that one for free. So, I may end up designing an adapter for a mitsu as well.

Now that I have the bellhousing we have an opertunity to address a question that has been lingering in these diesel threads......Does the A440 bolt up to the isuzu bellhousing? I looked for an ID tag on the isuzu auto and could not find one so i dont know if its an aisin or not (although from what i have read here it must be??). If there is anyone in NE that has an A440 sitting around we can meet up and settle this once and for all.

 

[dieselcruiserhead]

We have a good NPR 5 speed if anyone needs one...

 

[astr]

Update:

Yestarday I went to my friend's diesel shop. The motor in the 96 NPR is grenaded and not rebuildable. Bummer. But, he also had a grenaded automatic tranny for a 96 NPR just sitting around and he gave me the bellhousing. So now I have the piece I need to design the adapter. He also has a mitsubushi diesel which is basically identical in terms of size and ouput but uses a different bolt pattern on the bellhousing. Needs a rebuild but i can probably get that one for free. So, I may end up designing an adapter for a mitsu as well.

Now that I have the bellhousing we have an opertunity to address a question that has been lingering in these diesel threads......Does the A440 bolt up to the isuzu bellhousing? I looked for an ID tag on the isuzu auto and could not find one so i dont know if its an aisin or not (although from what i have read here it must be??). If there is anyone in NE that has an A440 sitting around we can meet up and settle this once and for all.

If it is a 96 then the transmission should be a JR403E manufactured by Jatco (Japan Automaytic Transmission Co.) and not Aisin. The JR403E should fit the 4BD1 and 4BD2. Here is a picture of the JR403E:

 

[bram]

that looks about right

 

[PurpleFJ62]

so are the proposed adapters going to be for a slush box or a manual?

 

[ridgerunner]

I have nothing to add to tech, but met a guy the other day who had "an industrial 3.9" Isuzu swapped into an older suburban. It was a non-turbo model with a turbo off of a car bolted to an electric 17% overdrive box (not a ranger, I looked) infront of a SM465. The rest of the drivetrain was 1/2 stuff- 10 bolt axles. etc.

The kicker was the truck was filled full of tool as the guy works as a scout camp ranger in Wyoming. It tips the scales at 8300lbs (sans driver) and at 60-70 gets 20-26mpg. It had been in the truck for about 10 years and at about 300K the owner was considering rebuilding it.

 

[RHINO]

wow thats cool brian (brian right?). i can see where the 4BD engines came from. that re-inforces my hopes of netting at or over 30mpg

 

[ridgerunner]

wow thats cool brian (brian right?). i can see where the 4BD engines came from. that re-inforces my hopes of netting at or over 30mpg

The guy carried a HUGE amount of crap in the back of that thing. I think 30mpg if you're light on the pedal and the weight itself is low. I'm not sure how 35" tires will work into the equation clay but it might be possible.

 

[bram]

yeah, very cool.

Purplefj - the idea is that this will be a bellhousing adapter. If it is true that all 2F and 3F bellhousings are the same on the motor side then it should work for both. I also need to make a spacer to make the tranny input shaft reach the clutch and I havnt really worked that out yet. Once I figure the manual out then I will try for the auto.

I dont know anything about the auto so im gonna need some help with that. What I really need is a blown up A440 and a blown up H42. My H42 is about to blow up though, so i have that covered.

 

[RHINO]

I'm not sure how 35" tires will work into the equation clay but it might be possible.

i'm on 37's now, but i have hopes and dreams man

 

[PurpleFJ62]

bram- sounds good. I would love a h55f hooked to an isuzu in my cruiser, would make my year if I could pull it off.

 

[bram]

dieselcruiserhead: Could you measure up the input shaft of the NPR 5 speed for me? I need to know the length, diameter, # of splines, and the dims of the little bit on the end that centers it in the crank.

Does anyone know for sure tthat the 4BD1 and 4BD2TC are balanced with the flywheel on the motor? I am trying to figure out if its possible to put a spacer between the crank and the flywheel. If it is balanced with the flywheel I would think that moving it is out of the question. If its balanced internally then it might be. Moving the flywheel forward would make it a whole lot easier to mate the H55F input shaft to a clutch disk.