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Discussion Starter · #21 ·
It looked like an off the shelf 1990 W250 Dodge downpipe would work for me but the only thing I could find was a 4" one. In the end it still needed to be modified but no one can say I have a restricted exhaust. ;>) It goes into a 4" Flowpro "Twister" resonator and then for the moment goes into the stock Hemi 3" duel exhaust. Once I get it running and tested I will replace that with a 3 1/2" Ecodiesel Race pipe. The stock Cummins exhaust is next to my new downpipe, quite a difference in size.
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Discussion Starter · #22 ·
Working on trany cooler setup. The ZF8HP70 has a heater/cooler unit on the side of the trans and hard lines that run to the cooler up front. I want to get rid of that stock heater unit and run rubber hoses to the front since the hard lines interfear with my engine. I gutted the heater housing, tapped (1/8" NPT) and plugged the old holes that went to the heater unit and found that the stock lines actually use a ORB style fitting/adapter to connect to the hard lines. I just replaced them with JIC-8 adapters and can now run new rubber lines up to the front. It can all go back to stock if need be. Here is the housing after modifications.
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This allows me to use off the shelf 1/2" hydraulic lines and if I find the trans is running too cool I can add in an inline thermostatic control like the Ram 3500 uses.
 
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Discussion Starter · #26 ·
With the ISB engine that is a big step forward. Now you know it runs.
Yea, big motivation boost.
Started to work on the truck side of the wiring today. Had over 60 DTC's on a scan, down to about half of that but they are getting more challenging to solve now. :(
Our summer/fall holiday RV trip is coming up in 5 weeks so the pressure is really on now.
 

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Discussion Starter · #27 ·
Well its been a few months but the truck is on the road. I got it finished enough the day before we left on holidays to tow our 5th wheel and it worked flawlessly. The combination of the ISB170 and the ZF8 is amazing compared to the NV4500 that was in my Dakota. The shifting is very good and gear spacing is excellent. I still have a few electronic things to figure out, still don't have a tach. Once I get a tach I'll post a video showing the acceleration which is damn amazing for a 4 cylinder in a full size truck on 37's.
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Well its been a few months but the truck is on the road. I got it finished enough the day before we left on holidays to tow our 5th wheel and it worked flawlessly. The combination of the ISB170 and the ZF8 is amazing compared to the NV4500 that was in my Dakota. The shifting is very good and gear spacing is excellent. I still have a few electronic things to figure out, still don't have a tach. Once I get a tach I'll post a video showing the acceleration which is damn amazing for a 4 cylinder in a full size truck on 37's. View attachment 132602
I bet you caint even tell your towing that thing unless theres a crosswind. That dash tach is CAN so it shouldent be to difficult to hack seeing the ISB CAN speaks the same. Hard to beat these 8+ speed autos now and with full lock up its a direct drive in high gear.
 

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Hey, I’ve got an ecodiesel that spun a rod bearing. I can’t find a long block to save my life. Used engine is 8.5k, I think I’m going to put a Cummins in it.

Do you have any more photos of the motor mounts and the SAE3 to ZF8 adapter? Also possibly a source for the ISB170?

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Discussion Starter · #30 ·
It will be much easier and cheaper to get a rebuilt or even new ED. This is a lot of work.
The ISB170 came out of smaller Freightliner and Workhorse chassis that were used as delivery vans like UPS. TD Conversions made the trans adapter,
 

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Discussion Starter · #31 ·
Did a road trip through the mountains last month and found it overheats pretty badly. First up is to relocate the intercooler from in front of the rad to below the rad. Added a couple of fans that are ON with the ignition to get max airflow/cooling.
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Discussion Starter · #33 ·
Towing or empty overheating?
Truck was empty for that trip. The new intercooler location and dual fans made a HUGE difference to EGT's. In the past I could get to over 1300 very quickly on the street in front of the house by just stomping on the throttle. We did another mountain drive on the weekend and full throttle up the mountain it never got over 1150!!! Very pleased with that.
 
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Discussion Starter · #34 ·
I also installed a new Mishimoto rad from a RAM 3500. It has the trans cooler built in which helps heat up the trans oil a bit. On the mountain trip this weekend the trans never got over 150 and the engine was always under 180.
Yes the hood closes. ;>)
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I also installed a new Mishimoto rad from a RAM 3500. It has the trans cooler built in which helps heat up the trans oil a bit. On the mountain trip this weekend the trans never got over 150 and the engine was always under 180.
Yes the hood closes. ;>) View attachment 134381
Haha Awesome. Was about to ask if the hood closes. Train horns fit too. ;)
 
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