wow, thank you, any pictures or built thread, could not find it but may be I am not to savy with the search features.
We have 3 XJ's , two 2.1 diesel and one 1997 4.0 with aw4 that has "no" rust for the OM 617 conversion. We have 4 mercedes 300td on WVO and two spare engines so we should be good for a while.

I had plans to mate a T5 to the OM617 using a bell housing of an early mercedes 4 speed as an adapter flange. Lost the T5 when my grease pit flooded during a winter.

Anyhow the aw4 it will be.

Thank you again.
J

 

The 700r4 has been great for me, it all depends how they are biult and put together. Differential gearing also makes a difference. I'd probably have stayed with the AW4 IF and that's a big if there was a feasible way to shift it automatically, basically manual valve body like the 700r4.

 

I also had plans to use a T5 with a 240 flywheel and bell (still have those parts) but decided to go with a different motor. The Aw4 has a removable bell so it's easy to make your own adapter. Also contrary to popular belief the Aw4 is EASY to control. They have a stand alone tcu (pre 1997 I think) so all you need to make it shift like stock is the tps and tv cable. I just got done doing a Kubota in a Cherokee with the Aw4 and it worked great. I have a build thread on here 86 Cherokee OM617/700R4/NP231

 

Wrong info on the Aw4! They can shift automatically like factory with very little work. They have a stand alone tcu so it will shift just fine with the tps and tv cable hooked up th the diesel motor.

 

I also had my 1996 AW4 xj mercedes auto shifting in D, for a little while at least. Not sure if it was locking up the TC or not, then it glitched out electrically I guess, and was manually shifting ok. I did not want to spend the effort and $ on that setup to continue The suspension on that xj was too shot for highway, I never got it over about 50mph before it would death wobble, but that is what you get for a $100 jeep. Big lesson there about swap candidates.

Evenglass did you get your new turbo yet??? I thought it might be waaay better with the correctly sized turbo.

I did not see an intercooler? And why all the fans. Is your MB running hot? I know the gasser xj's run smokin hot. but my MB runs pretty cool, I haven't wheeled it. The Kubota only has the one xj electric fan, and it only comes on with the AC.

The new pump looks very nice. you have gone to all the work to fit the new pump, and now the new turbo, why not go all the way and get the intercooler, if you haven't already. cool all that extra charge down. come on you know you want one;; Are you keeping tabs on your EGT and IAT. what was your EGT with the new pump , but before the turbo change?? the Kubota's intercooler gives about a 100F temp drop on the IAT.

 

Thanks for all the thumbs up. I will see if I can get a separate AW4 to prep an adapter plate or use an original mercedes bell housing. I have a good running aw4 with 4.0 litre. If will study all your guys threads in more detail. Does the AW4 computer use the multiple rpm impulses from the original flywheel or only one pulse per revolution? Can the pulse ring be easily separated from the original flywheel?
Sorry for the "dumb " questions. I provably can look that stuff up.

Thks J

 

Good info! Never seen one in use myself.

 

The tcu uses it's own speed sensor and possibly the rpm from the flywheel (Not sure because I was keeping that sensor for the tach) and yes it can be easily separated. You should probably start you're own build thread so we don't hijack Evenglass's thread. Sorry

 

Thanks, I got talked out of using the AW4 on my first Cherokee build and always wondered, so I did the last Cherokee just to see for myself and to find out if I wanted an auto or manual in my final rig. It turned out great, but the 5 mpg hit and the loss of the "fun" factor of the stick I decided the a 6 speed was the ticket.

 

New turbo is supposedly on the way and yes I do believe it will be much better and stronger with the new turbo. I would love to have an intercooler. The benefits of an intercooler are great but....the packaging is a nightmare. It always seems harder before doing something and I've never done one before. I do plan on running an intercooler, still working out the details. I am running a EGT but no IAT. With the KKK turbo egt 1050* at 65mph. Switched to Garrett and egts dropped to 950*. Strangely the m pump dropped the egt to about 850-900*.

The cooling system.....I could probably write an entire article on this subject but this link kinda sums it up http://www.superturbodiesel.com/std/showthread.php?tid=6961

The bad news. I've had some clicking that turned into a tapping thats now a slapping in the engine, 90% sure it's a wrist pin. This has progressed for a very long time. Good news is the spare engine is prepping for transplant.

The great thing about this swap is that after 30-40k I've changed things more times than I can count and have learned and shared much in the process. And since a don't really have an RD budget it's great to hear and learn what has worked for others like FTE. Through all our efforts it has come a long way. I have so much test data and info on this setup now it will be fun to see how the new (to me) donor compares