Thread: Conversion Cummins ISF 3.8 (or 2.8)

Originally Posted by Northy

Next hurdle is getting it to all talk to the dash ect in a puma

Talking to is not the hard part. Directing messages to the right connectors is the fiddly bit.

Cummins ECU uses J1939 CAN Bus standard which is a universal standard. I read somewhere that Ford use a tweaked J1939 standard for the Duratorq ECU. Scan Gauge that some of us use is J1939 compatible and that reads the ECU data so I would be surprised if the instrument cluster is not J1939 compatible. If it is not, worse case you buy an aftermarket cluster or retro fit J1939 instruments into your facia.

Next Generation Instrumentation System (NGI)
Instrument Clusters


A little light reading on J1939

SAE J1939 Explained - A Simple Intro (2018)

R28-wiring-harness-controls.jpg

I have been pondering this idea over the last 7 months, not to the depths that you have, but enough to have my brain start going crazy again when I came across this post.

I have a 88' RRC which I am so very slowly turning into a ute and it has the VM Diesel which I had to smash an R380 onto using the LT77 bellhousing, so I could get it moving (at the time a TDi300 conversation wasn't doable financially).

Once the vehicle is complete and registered, I would say that even the 2.8 conversation would be adequet to move the thing around swiftly enough and should be easy enough to get complienced considering the vehicle is identical to it's V8 siblings.

I will be following this thread with much interest. Thanks for you efforts.

Konradical

Originally Posted by MLD

Talking to is not the hard part. Directing messages to the right connectors is the fiddly bit.

Cummins ECU uses J1939 CAN Bus standard which is a universal standard. I read somewhere that Ford use a tweaked J1939 standard for the Duratorq ECU. Scan Gauge that some of us use is J1939 compatible and that reads the ECU data so I would be surprised if the instrument cluster is not J1939 compatible. If it is not, worse case you buy an aftermarket cluster or retro fit J1939 instruments into your facia.

Next Generation Instrumentation System (NGI)
Instrument Clusters


A little light reading on J1939

SAE J1939 Explained - A Simple Intro (2018)

Yes, there is heaps of info out there on the J1939 protocol - we use an aftermarket control system at work in our gens that makes light work of electronic engine control and instrumentation. We can even pull an analogue signal from the controller to run normal 50mm gauges in the dash that is directly referenced from the CAN. No other senders, wiring, etc needed. I’m sure there would be some good vehicle equivalents out there as well.

Originally Posted by Northy

Next hurdle is getting it to all talk to the dash ect in a puma

Td5 to Puma tdci Can bus - Defender Source

Originally Posted by nmarkiw

I just finished two can-bus gateways products for the LS conversions to both the Puma 2.2L and 2.4L clusters. I recently made arrangements with Cummins to support the R2.8L for the D2/Puma 2.2L/Puma 2.4L vehicles. The Cummins supports both J1979 and J1939 protocols.

Nicholas Markiw
RW Performance Engineering Inc
+1(858)967-5313
info@rw-eng.com

Anyone looked into the Merc om606 engines?

The idea of a repower crosses my mind periodically and i go searching for information.

I previously referred to a repower of a D1 for the Cummins ISF2.8 crate project. A link to the chap that did that work.

6l80e install/info -

Forums

Reading through the post above, it seems that the GM 6L90 box doesn't talk with CAN and requires an intermediary controller. Zero Gravity sell a kit to allow the GM box to talk to the Cummins CAN J1939 protocol. Or you can buy the controller and box from them too.

https://www.zerogravityperformance.c...on-controller/
https://www.zerogravityperformance.c...on-conversion/

Marks Adaptors sell a GM to LT230 kit but it's a kings ransom.

So far i haven't seen any ISF3.8 conversion on the forums. Possibly because Cummins USA are pushing the ISF2.8 and the ISF3.8 is a ROW engine backed by Foton.

FYI - Chad McKinney LLC Chad McKinney LLC - Home | Facebook is selling bell housing adaptors (some as full kits ie clutch, flywheel etc) for the ISF range (he has an Ebay page)

ISF2.8 to R380
ISF2.8 to AX15 (NV3550)
ISF2.8 to NV4500
SAE#3 to NV4500

AFAIK the ISF2.8 came with a shallow flywheel housing (the starter protrudes into the bell housing) or in SAE#3 variants. The ISF2.8 to NV4500 appears to be the shallow housing variant. I haven't done the research yet, but it might be possible to get a shallow flywheel housing for the ISF3.8 and (subject to clarification with the vendor) it might be possible to use the ISF2.8 to NV4500 kit for the ISF3.8. If not, use the SAE#3 bell housing and then work out a clutch kit to suit. The shaft length is an unknown but could be overcome with a flywheel spacer if too short.

Those of you with an ageing Disco the ISF2.8 to R380 could be a viable conversion. 360nm from 1600 rpm (Nm on par with the Puma and International 2.8).