Thanks for the info. The stock NPR truck has the same pattern as yours. I thought that maybe your mod may have flipped the pattern or reversed it from side to side.
isuzu 4BD1T swap?!
- Thread starter orangefj45
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Thanks for the info. The stock NPR truck has the same pattern as yours. I thought that maybe your mod may have flipped the pattern or reversed it from side to side.
acy76,
I am looking for the NV3550 tranny that came in the 2000-2003 Jeeps. It has a higher first gear and weighs in at about 2/3 the weight of the bigger brother nv4500. It also direct bolts up to the Dana 300
. And it has a nice OD ratio. Keep in mind I am installing this into an 86 CJ-7 Jeep.Dieseltim
Hey Dougal,
It looks like you have completed the solid model of the 4bd1t and gearbox, is that correct? I am having someone model the front end of the toyota 5 speed (including input shaft) and bellhousing right now. Still working on the FTP though. Summer vacation, school, and plenty of FJ60 maintenance are really taxing my efforts.
It looks like you have completed the solid model of the 4bd1t and gearbox, is that correct? I am having someone model the front end of the toyota 5 speed (including input shaft) and bellhousing right now. Still working on the FTP though. Summer vacation, school, and plenty of FJ60 maintenance are really taxing my efforts.
It's not complete, possibly it never will as there'll always be something to add or improve.
But functionally it's almost there. I just need to put in the front timing gear cover and water pump.
I've been busy doing nothing lately.
Mid winter holiday.
I'm almost ready to start down this road with my '71 Pig (all stock, no P/S drum brakes, flat springs) but would like to get opinions from you smart guys out there. I'm most likely going the 4BD1T route like Rhino to minimize lift and an auto vs. 5 speed. This is going to be the family car. I've got an FJ60 roller with P/S and transfer case and I'm thinking maybe of dropping the Pig body onto that. I had read in some other posts that the 60 front axle was smaller than the 55 which means I can reduce lift, use 62 springs, have disc brakes and P/S already bolted to the frame. What's easier, making new body mounts or trying to mount all the 60 stuff to the Pig frame? Should I start another thread with this?
the 60 axles are excactly the same, but a little wider. i'd say since its the family car dont bother with the 60 axles. you dont need the width since your not doing much lift. if you want the 3:70 gearing just swap 3rd's. so in that respect its much esier to mount the steering box to the 55 frame than new body mounts.
hey on another note, i am planning on a tach at some point. what is the best place for a pick-up? just a generic flywheel one or is there something else made for the isuzu engine?
also, as ive been driving it for a while now i still sometimes forget to shift low enough and think i can rev up more, but the governer kicks in and reminds me. its a much lower revving engine than the numbers on paper would have you think, i'm glad i went with the overdrive tranny. i remember when looking at these engines in the early days of my swap options i was thinking that since i cruise at 2500rpm on the highway i might be ok with my four speed, glad i didnt, just going by ear i would say i MIGHT hit 2500 rpm when the governer kicks in but i think its even lower.
also, as ive been driving it for a while now i still sometimes forget to shift low enough and think i can rev up more, but the governer kicks in and reminds me. its a much lower revving engine than the numbers on paper would have you think, i'm glad i went with the overdrive tranny. i remember when looking at these engines in the early days of my swap options i was thinking that since i cruise at 2500rpm on the highway i might be ok with my four speed, glad i didnt, just going by ear i would say i MIGHT hit 2500 rpm when the governer kicks in but i think its even lower.
On my truck I'm using the alternator to supply the tacho pulse. It's output is a 7V ripple. The tacho in my truck runs on DC (someone converted it at some stage) so I made a little frequency converter circuit. It's quite simple, involved a single chip and about half a dozen components following the chip makers circuit design. The output is tunable, I still haven't got it completely right but it's within about 100rpm.
My engine is governed to 3600rpm, but it's definitely most comfortable running below 2500. I used to have it geared for 2500rpm at 100km, but recently geared it up to 2000rpm at 100km and saved 15% in fuel.
I was hoping for such an improvement (the BSFC curve said it might happen), but was ecstatic to actually acheive it.
I have to plead ignorance here. What did you change in the gearing to get it to do that?
I swapped my transfer box.
Old one was 1.2:1 high range, the replacement was 1.003:1 high range.
I remember reading in an Aus Land Rover forum, that a tacho sensor can be fitted in one of the plugs on the underside of the injection pump.
These are available from Isuzu dealers in Aus. Part #:- Tacho 8972403710 and sensor 8944402810.
orangefj45
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- Thread starter
- #372
i'd put the 60 axles under the pig depending on how much lift you want. if you're going to stay stockish, then run the third members and disc barkes from the 60 on your existing axles.
gravel maker on here aka dan sells a kit that allows you to mount the 3" wider 60 series axles under a 40/45/55.
thanks bush,,,,,
Hey Rhino
I checked up on those parts for you (the ones Bush65 mentioned above).
The tacho is a current part and here at least was readily available, it's used on the Isuzu 4LE1 industrial engines, it's retail price was $NZ326 (plus tax).
The sensor it seems is less common, none in New Zealand but some showing up in stock in Australia. Retail on that part was $NZ175 plus tax.
I checked up on those parts for you (the ones Bush65 mentioned above).
The tacho is a current part and here at least was readily available, it's used on the Isuzu 4LE1 industrial engines, it's retail price was $NZ326 (plus tax).
The sensor it seems is less common, none in New Zealand but some showing up in stock in Australia. Retail on that part was $NZ175 plus tax.
thanks for doing that dougal
hard to believe but its been almost a month now that i have been driving the cruisuzu (?). i have been commuting to work and running errands and regular everyday driving, took two highway trips to check the longer range ride and drive.
i am thourougly impressed and happy with the swap, i can commute all week on barely a 1/4 tank of fuel, my average combined city/highway mileage has been 24MPG, and performance is waaay better than the 2F. its not a rocket ship or dragster by any means, but i almost never need to give it more than 1/2 throttle to easily keep up with traffic, the 2F was a strong runner but i didnt even bother to try. on a 7% grade climb on the highway i drop into 4th gear and maintain 54mph no problems, this used to be a 3rd gear climb at no better than 40mph tops. just to check speed i ran it up a bit over 80mph, it was fine, no power issues pushing the pig, but i dont like going that fast on 37" tires so i backed off, i cruise around 65-70 just like before but now it gets there much quicker and uses half the fuel.
i notice a vibration at highway speeds that changes with engine speed, may not be anything but i want to investigate it further, its a droning kind of vibration rather than a constant type so it might just be the engine itself ? anyway i'll be looking into it.
so far i am running about 30% soy bio, no noticeable drop in mileage or performance but you can smell the difference, kinda like a radio control airplane.
i am thourougly impressed and happy with the swap, i can commute all week on barely a 1/4 tank of fuel, my average combined city/highway mileage has been 24MPG, and performance is waaay better than the 2F. its not a rocket ship or dragster by any means, but i almost never need to give it more than 1/2 throttle to easily keep up with traffic, the 2F was a strong runner but i didnt even bother to try. on a 7% grade climb on the highway i drop into 4th gear and maintain 54mph no problems, this used to be a 3rd gear climb at no better than 40mph tops. just to check speed i ran it up a bit over 80mph, it was fine, no power issues pushing the pig, but i dont like going that fast on 37" tires so i backed off, i cruise around 65-70 just like before but now it gets there much quicker and uses half the fuel.
i notice a vibration at highway speeds that changes with engine speed, may not be anything but i want to investigate it further, its a droning kind of vibration rather than a constant type so it might just be the engine itself ? anyway i'll be looking into it.
so far i am running about 30% soy bio, no noticeable drop in mileage or performance but you can smell the difference, kinda like a radio control airplane.
4:10,, i dont yet have a tacho installed but i guess is about 17-1800 rpm.
