isuzu 4BD1T swap?!

[RHINO]

My question is, has anyone here actually done a 4BD1/2t swap on an 80 series? I am getting a bit concerned about the fact that I haven't seen any posts of finished 80's, so much so that I am beginning to have second thoughts and considering a GM 6.2/6.5 conversion.

not that know about or have heard about,,, my concern would be power. i think that an 80 owner would want to bump up the power some resulting in slightly lower MPG return. there are quite a few 4BT powered 80 conversions out there now. check into that before you make a decision.

 

[rtarh2o]

I have considered the Cummins 4BT but I really don't want to go with the 4-5" lift or put up with the noise I have heard is associated with that engine. I could actually deal with the noise more than the lift. I wonder if there is any way to modify the oil pan so you could only do a 2-3" lift, I am planning on doing that anyway, just don't want to go all the way to 4-5". I am a bit concerned about power with the Isuzu as well, what is it about the Cummins that makes it more powerful than the Isuzu? They are the same displacement? It seems like it would be easy to increase the output of either engine considering they are both turbos. I really wish I could find someone who has done the Isuzu FJ80 conversion so I could see if they are satisfied. As I said, the GM diesel has been done many times and there are many good testimonials on the various websites but the biggest plus is the the "kit" to install it.
Any other thoughts?
Rusty
94 FZJ80 waiting

 

[RHINO]

well i think isuzu was just conservative on power output. if you like the idea of a "kit" go for the GM, its a good engine overall. but i dont think the MPG is there.
also, heres a new one for ya,,, check out the common rail diesel developed for jeep. they claim 215HP and 376 FT LB from a 3 litre and mid 20's MPG, dont know much about it but conversions are available for FJ cruiser and most imported cruisers and they are emphasizing 80 series. site doesnt provide much info but you can check'em out, maybe e-mail them or something..http://www.dieseltoyz.com/

 

[rtarh2o]

How about FJ60/62 swaps, anyone driving those with the Isuzu? Are you satisfied? From the little bit I can find it looks like the 80 series is about 600 heavier than the 60/62 series. If the engine works well in the 60/62 I would think it be fine in the 80. Case in point the 91-92 FJ80 with the same 3FE (is that correct?) as the 62, I have owned 2 FJ62's and have driven the early FJ80 and thought both were fine, using these as an example I can justify the Isuzu being fine in an 80 if people are happy with it in their 60/62's. I am interested in fuel consumption, driveability, noise etc. Also what transmission are you using and engine rpm at 70 mph.
Thanks
Rusty
94 FZJ80

 

[RHINO]

far as i know i am the only wagon in existance with an isuzu. there were one or two 40's but no one seems to know who they are or where they went. one of the guys here is going to put an isuzu in his 60 this season so you'll have to wait a while for feedback from him. based on my expierence i feel you'll want to bump up the isuzu's power a bit to be happy with it in an 80. if you know what a 13BT feels like in a wagon i would put the isuzu right there.

 

[rtarh2o]

Never driven a 13B, how do you like yours in your 55? It is probably quite a bit lighter than an 80, or a 60/62 for that matter. People talk about how slow and underpowered the 62 was but I actually quite enjoyed mine, even pulled a trailer (not heavy) a few times and never had any complaints, just wondering if the Isuzu would be comparable, sounds like you think probably not. What rpm are you turning at 70 and about what kind of mileage are you getting?
Rusty
94 FZJ80

 

[RHINO]

my engine is stock still, i havent messed with timing, pressure or anything else to boost power. it is better than the 2F was but more power would be nice, maybe just an intercooler would do it. i just think you should plan right away to boost power i bit for the added 80 weight.

dont have a tach right now, i run a 5 speed, 4:10 and 37" tires, i'd recon a fair guess at about 18-1900 rpm at 70mph

 

[rtarh2o]

An intercooler should bump up the HP a bit, the good thing about turbo's (at least from my limited experience) is that HP gains are fairly easy. I had an Audi I replaced the wastegate spring with a stiffer one to bump up pressure (on that car I had to modify the ECU to make it work) so I am sure there are some things that would work with the diesels as well. Right now I am a little concerned about the final drive ratio, did the FJ60's come with a 3.70? Is it possible to switch that ring & pinion into the 80? That would be ideal for economy.
Rusty
94 FZJ80

 

[Dougal]

my engine is stock still, i havent messed with timing, pressure or anything else to boost power. it is better than the 2F was but more power would be nice, maybe just an intercooler would do it. i just think you should plan right away to boost power i bit for the added 80 weight.

dont have a tach right now, i run a 5 speed, 4:10 and 37" tires, i'd recon a fair guess at about 18-1900 rpm at 70mph

Do you have an EGT gauge?

I only bought mine after my pump had been screwed with, so it'd be interesting to see what stock EGT's are.

 

[RHINO]

no EGT gauge yet, but its on the short list as i definitely want one to monitor. i will get one before i mess with the engine, so i'll let you know for sure.

 

[svo_jon]

Bram-
How is the adapter coming along?
Thanks
Jonathan

 

[bram]

I just finished taking precision measurements of the mating face of the toyota H41 (same as H55) using a CMM. It should only be a few days before I have a solid model complete.

Hey Dougal....what is the proper method for measuring the center of the transmission input shaft relative to some other feature on the front of the transmission (there are two locating holes for mating the bellhousing that seem like good features to use)? I know that the center of rotation for the shaft is a really critical dimension and I want to make sure I get it right.

Also, I should have the FTP up any day now so we can exchange data.

 

[Dougal]

I just finished taking precision measurements of the mating face of the toyota H41 (same as H55) using a CMM. It should only be a few days before I have a solid model complete.

Hey Dougal....what is the proper method for measuring the center of the transmission input shaft relative to some other feature on the front of the transmission (there are two locating holes for mating the bellhousing that seem like good features to use)? I know that the center of rotation for the shaft is a really critical dimension and I want to make sure I get it right.

Also, I should have the FTP up any day now so we can exchange data.

Cool. My solid model is functionally all there. Many parts I cheaped out on (no fuel lines etc) but the hard points are all there.
AFAIK there's no proper measuring method. But the shaft is usually concentric to the ring of mounting holes. If you can lock down enough of the holes with point to point measurements then the shaft will be at the centre of the arc that hits them all.

 

[dieselcruiserhead]

Rhino we need some more pics!

 

[RHINO]

help me out i'm not as good at all the buildup thread stuff like you are. what do you want more pics of?? lemme know i'll go out and tak'em.

 

[dieselcruiserhead]

All of it and how she looks done and running

 

[88tlc]

from wholesale automatics, australia:

We can make a Custom torque convertor fit straight up to an Isuzu engine if it had an automatic drive plate but not a manual flywheel. Someone will need to make a Isuzu - 3FE A440F bell Housing and then work out how to get a automatic drive plate onto the Isuzu crank in such a way that the Isuzu starter still engages properly. However you can make what we call a cotton real which is a spacer between the crank bolts of the Isuzu and then adding the 3FE drive plate on top of the cotton real. This system maintains the original manual flywheel for the engine, then you bolt up the cotton real and then the 3FE drive plate. This would mean a wider adaptor plate to accommodate a second drive plate say about 2-3".

If this is done right then we can then use a standard configuration Heavy Duty Hi Output Torque Convertor for $1100 Aus and not the more expensive unit off setting some of the cost of the adaptor. Using the factory 3FE drive plate means that there is only a cotton wheel and adaptor plate needed. because you are fitting a 4 Cyl engine in place of the 3FE 6 Cyl then you will have more than enough room even with a larger adaptor.

The kit you sent me a photo of uses a large diameter Chevy drive plate so I would imagine this system to accommodate the Chevy T/350, T/400, T700 and 4L80E transmissions. But I do see that it looks like it has also used a cotton real set up and would also run 2 drive plates.

You run into a problem as it looks like the 3FE bell housing might be smaller in diameter than the internal diameter that you see on the adaptor. We could use a larger 4.5L A442F bell housing that is also longer, use a shorter version of the cotton real and get away with a adaptor that is only 11/16 or 3/4 thick still allowing us to use a standard configuration Heavy Duty Torque Convertor.

I can see it working and I have plenty of the 4.5L bell housings.

Yes our Heavy Duty Extreme Recalibrated Valve Bodies are Completely Redone and comes with Fitting Instructions, Pan Gasket, Oil Filter, Filter Gaskets and Case to Valve Body Rubber Seals. See web link for details.
http://www.automatictransmission.com.au/release.asp?NewsId=11360

does anyone have an auto 4bd engine housing, and flex plate?

wholesale automatics, is willing to make a torque converter that is HD diesel, 1440f splined, but mates to the isuzu flex plate.

 

[88tlc]

3fe and a440f engine out, ready for the isuzu 4bd

andre and I took worked on the fj62 this weekend, and removed the engine and tranny.

got the transmission off the engine, and getting ready for the 4bd/a440f hook up.

 

[hks3sgte]

Great! I can't remember... are you planning on a custom adapter?

 

[tntoyota]

from wholesale automatics, australia:

We can make a Custom torque convertor fit straight up to an Isuzu engine if it had an automatic drive plate but not a manual flywheel. Someone will need to make a Isuzu - 3FE A440F bell Housing and then work out how to get a automatic drive plate onto the Isuzu crank in such a way that the Isuzu starter still engages properly. However you can make what we call a cotton real which is a spacer between the crank bolts of the Isuzu and then adding the 3FE drive plate on top of the cotton real. This system maintains the original manual flywheel for the engine, then you bolt up the cotton real and then the 3FE drive plate. This would mean a wider adaptor plate to accommodate a second drive plate say about 2-3".

If this is done right then we can then use a standard configuration Heavy Duty Hi Output Torque Convertor for $1100 Aus and not the more expensive unit off setting some of the cost of the adaptor. Using the factory 3FE drive plate means that there is only a cotton wheel and adaptor plate needed. because you are fitting a 4 Cyl engine in place of the 3FE 6 Cyl then you will have more than enough room even with a larger adaptor.

The kit you sent me a photo of uses a large diameter Chevy drive plate so I would imagine this system to accommodate the Chevy T/350, T/400, T700 and 4L80E transmissions. But I do see that it looks like it has also used a cotton real set up and would also run 2 drive plates.

You run into a problem as it looks like the 3FE bell housing might be smaller in diameter than the internal diameter that you see on the adaptor. We could use a larger 4.5L A442F bell housing that is also longer, use a shorter version of the cotton real and get away with a adaptor that is only 11/16 or 3/4 thick still allowing us to use a standard configuration Heavy Duty Torque Convertor.

I can see it working and I have plenty of the 4.5L bell housings.

Yes our Heavy Duty Extreme Recalibrated Valve Bodies are Completely Redone and comes with Fitting Instructions, Pan Gasket, Oil Filter, Filter Gaskets and Case to Valve Body Rubber Seals. See web link for details.
http://www.automatictransmission.com.au/release.asp?NewsId=11360

I e-mailed them a hundred years ago (ask orto!) good to know some one got got a reply.


Gonna ask some more to drum up demand




(me)
80 owner playing catchup PT 4wd is out of the question for me, If I'd a wanted PT I'd a bought a part time!