Originally posted by krek
Going Diesel Need Opinions
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Originally posted by iroc86I guess I'll be the first one to vote for "Other/Foreign."
I'm not much for hardware made outside of the United States, but I've been smitten by the Isuzu 4BD-series engines. It's powerful, quiet, and doesn't shake your brain apart like a Cummins. They can be a little tricky to bolt up to a transmission, but if you find the correct adapter, it's pretty easy. One company makes an Isuzu-to-Chevy adapter, and there are a few industrial Isuzu-to-SAE adapters floating around.
The 4BD1T engines did not have a computer. Late-model 4BD2T engines used a very simple controller to operate the glow plugs and the transmission, but you can ditch that entirely. They always had mechanical injection pumps.
Check out the link in my signature -- I'm swapping a 4BD2T into my '95 YJ and doing a lot of suspension work in the process. It's far from complete, but I'm getting there. The engine is bolted to an SM465/NP205 combo using an industrial Isuzu-to-Chevy cast adapter. I also machined my own adapter, but came across the casting and couldn't pass it up.
These engines were used in Izuzu NPR and certain GM box trucks. I bought my '94 GMC W4 tilt-cab truck for $2000 on Craigslist, drove it five hours home, and pulled the motor for my swap. They're relatively inexpensive if you can buy the whole truck.
Take a look at the Isuzu 4BD1T/2T section over at 4btswaps.com. There's a lot of interesting stuff going on there, including a few people running compound turbos and really pushing these little four-cylinders to the limit. They're every bit as strong and reliable as a Cummins, in my opinion.
JeepinPete had a 4BD1T in his Cherokee, but I believe he abandoned the project. Maybe he'll chime in.charlie
KB0HXA
"Crom" 76/75 Cherokee/J20 Hybred,
Originally posted by Gambler68congrats...that's the first post on here I have absolutely no effing clue how to comment on.
Robert A. Heinlein
The birth of CROM is recorded here
http://www.alaska4x4network.com/showthread.php?t=7778
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Originally posted by KyooMacIsn't the 4L80E a GM transmission that requires a tcm? And the 4L80E mates to the GM 6.5 liter perfectly, no adapter. So wouldn't the 6.5 non turbo be the best option for less headaches?
Yes but with the lack of power, predestination to melt piston heads, injection pump problems, the cost to just rebuild, poor MPG for the end result, and this is just to list a few.
For the initial cost of finding a good running GM, one could find a 6BT non after-coooled version and gain tons. As far as using the tranny, all you have to do is get a motor plate off of the back of a P30 chassis that had a 4BT in it. This will have a TH475, HD version of the TH400, and presto you can bolt it up with nothing custom.
I still vote for the 4BT for these main but not only reasons......weight (4BT)875lbs verses (6BT)1250lbs, MPG, and overall size, which aids in the ease of installing one. <<---- Of course this from one that still has not completed theirs after 2 years......Last edited by COLOFIREMAN; 08-01-2009, 08:51 AM.Jason in the Mountains
1978 J10 LB,OE 4-speed,4:10's,4BBl,and just 85K(daily driver)
1988 Grand Waggy 8" lift 35" A/T's (under construction)
1984 CJ7 12" lift 39" Iroks 1 tons
1979 Cherokee Super Chief (under construction )
1974 J-10 LB Buick 455 BB 4" lift 33" BFG tires
1973 J-4800 LB plow truck 7" lift 255/85/16 LT Truxs MT's
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6bt is cheapest, can pick up a good donor for ~2k with high mileage.
4bt adapters are frickin' expensive!! Maybe they're cheap/easy to come by in your area, but they want $600+ for an adapter flexplate set-up around here.
Cheapest I've seen a running 4bt donor in this part of the woods is $3k
I searched forever, and never found anything I considered buying.
Found my 6.5/4L80E/NV242 from an H1 Hummer with 88k on the clock.
My cost was just under $1k, and it came with all accessories, wiring & TCM.
PO paid $30k for a Duramax upgrade, wish I had that kind of $$$
I would personally love to install a 4BT, they just get too much money for them around here IMHO.Tony
88 GW, 67 J3000, 07 Magnum SRT8
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-AMC V8 540
-Chevy 6.5L Diesel V8 644
-Cummins "12-Valve" 745
I beleive these are Block weight only87' Grand Wagoneer
401/727/229, Currently:RUNNING
84 J10/20 hybrid 258/727/208 Daily Driver
80' J10 4BT/AX-15/208
74' J10 Go Grabber Green Sold
Originally posted by Heavy_Metal_Thunder_81Inferior Chevy
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Originally posted by babywag6bt is cheapest, can pick up a good donor for ~2k with high mileage.
4bt adapters are frickin' expensive!! Maybe they're cheap/easy to come by in your area, but they want $600+ for an adapter flexplate set-up around here.
Cheapest I've seen a running 4bt donor in this part of the woods is $3k
I searched forever, and never found anything I considered buying.
Found my 6.5/4L80E/NV242 from an H1 Hummer with 88k on the clock.
My cost was just under $1k, and it came with all accessories, wiring & TCM.
PO paid $30k for a Duramax upgrade, wish I had that kind of $$$
I would personally love to install a 4BT, they just get too much money for them around here IMHO.
For the money and the peace of mind, I sell the 4L80E, go with a 6BT non after-cooled, and a Dodge tranny.Last edited by COLOFIREMAN; 08-01-2009, 05:09 PM.Jason in the Mountains
1978 J10 LB,OE 4-speed,4:10's,4BBl,and just 85K(daily driver)
1988 Grand Waggy 8" lift 35" A/T's (under construction)
1984 CJ7 12" lift 39" Iroks 1 tons
1979 Cherokee Super Chief (under construction )
1974 J-10 LB Buick 455 BB 4" lift 33" BFG tires
1973 J-4800 LB plow truck 7" lift 255/85/16 LT Truxs MT's
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Originally posted by PlasticBoobI didn't read every post, but I think some people here didn't see the OP's requirements. Normally I'd suggest a Cummins 4 or 6BT, but based on what he stated, I voted GM diesel, specifically the 6.5L - spend some time on the Hummer forums and you'll see it's not nearly as bad as the 6.2.Joshua1988 Grand Wagoneer "Elwood"(thanks krek)Constantly changing, never done
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I was swapping an Isuzu 4BD in my Cherokee. Unfortunately I ran out of time, money, and desire, in no particular order.
To me an Isuzu 4BD and a Cummins 4BT are interchangable as far as power, economy, and durability are concerned. The Isuzu 4BD series were installed in the NPR box trucks, GVW up to 15k lbs or so. So they have plenty of power to move around a FSJ. My choice between the two would come done to which I found for a good price.
If you are going to do this swap in a '79 or earlier FSJ, the Isuzu would be a cleaner swap. The exhaust and starter are opposite of the front driveshaft. You will have use hydraboost. '80 and later, the Cummins would be the cleaner swap for the same reasons.
Wagoneerlover, I've got the complete drivetrain waiting to go in someone's FSJPete
'55 Willys Wagon, the original FSJ
Sitting on a '77 Cherokee frame, Dodge D60's
Isuzu 6BD1, NV4500, NP241
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