OM606 to FZJ80 via Doomsday Diesel Kit (1 Viewer)

[Minuteman]

And now we are playing with some fun stuff…
Turbo cam back from coating. The amount of adapters on this thing is ridiculous, what we do for stuff that says Toyota on it!

I am currently doing harness work, om harness is done(not much too it). My plan is to strip things out of the 1fz harness(injectors, distributor, maf, etc) and run it similarly to @anothernord . Im not running dsl1, but He used the stock 1fz throttle body to control certain functions(kickdown, cruise maybe). Here is a thread i found with a 4bt swap running a 343f with no engine inputs. Where this will work even better on the om swap, is the nearly identical redlines of these engines.

1996 Toyota Land Cruiser A343F transmission control observations OEM controller

I recently swapped a 4bt Cummins Diesel into my cruiser utilizing the stock auto transmission and OEM computer. The computer controls the engine and transmission and was worried about it functioning without the engine inputs. It is installed and tuned with 90-95% of where I want it so I...

forum.ih8mud.com

Does anyone have input on cruise functions? I assume tps is the main input? Tach inputs?

 

[mrsleeve]

Whoa I thought about this conversion many years ago when I had far more space, time, and $$$$ to devote to projects, so I am living vicariously through you on this one. Awesome work!!!!!!

Side note is that Filson Weekender jacket I spy up there a couple photo posts back?

 

[suppjoe]

sweet. I have a NV3550 transmission that i've been wanting to attach to an om606 or 648 but don't have anything to put it in

 

[Minuteman]

PPS Bracketry

Anothernord had a great setup using the OEM 1fz throttle body to control, kickdown, cruise, throttle input, and now we’ve added pps input to that same body. For those who dont know, the esc pump uses a PPS or Pedal postion sensor to control the injection pump. It is a six pin connector, that the ecu uses for fuel/load reference. Since i opted to run a factory ecu, this is completely necessary, or else im not going anywhere. It would just idle around. After this post, i will be adding a color wire diagram for the 99 om606, along with how ive modified the harness. Here is the PPS:

Here is how we have linked it, using the corner of the is really the only spot to go, considering the length of the kick down

We used these existing m8 holes for the PPS bracket(my buddy is the best garage fabricator ever). Very pleased with this layout

Im going to add a few more pictures of the brackets so anyone running a tuned oem computer may be able to set this up. All this is about 3/16” aluminum, and has very little movement. Just built out of scrap laying around the shop

 

[Minuteman]

Connection to Throttle Body:

This was steel, not aluminum

The reason i used a keyring is it helps the rotation of the throttle to be less of a “camming” and more of a straighter pull, like it normally would be hooked to the Mercedes pedal. I may eventually build a little “u” bracket with to m6 studs facing downwards for the cable end and the lever. Incidentally, a lot of those factory cable cam? brackets(kickdown, cruise, throttle) move somewhat independently so you really have to tie this to the shaft of the body. If the lever/bracket above starts to shift, slotting it to match the throttle body at the appropriate angle would be the best route IMO.

BTW, thread on the top of the TB is a M8 1.0, so no fancy “anti-slip” flange nuts laying around to help the bracket from slipping. Locktite for now…

I forgot to take a picture of the throttle body mounting bracket, but its pretty simple. There were two bolts on the firewall, and made a basic L bracket.

Below was my good friend doing his thing.

(Bottom of PPS)

 

[suppjoe]

for the nut on the tb you could go with a fold-over tab style lock washer

 

[Minuteman]

99 E300D Diagram below.

 

[ToyotaTechnical]

Pumped to watch this build. Really appreciate the details. I have a OM606A squirreled away for an 80.

 

[TheBussman]

nice work, ATS turbo? would be cool to run it twinscroll the 606 does respond nicely to twin scroll manifold. My Sean Tracy 1.5 tune was super smokey for me. All the mechanical cars I've setup ran a lot cleaner but there are so many variables at play.

 

[Dougal]

Before you get too attached to that CT26 turbo you should know it's not a good choice for any diesel. Especially a 3 litre one that's going to need a huge amount of boost to make the numbers you want.

CT26 is only good for about 15psi and being an old, inefficient, design will be laggy and slow to boost which makes it frustrating to drive and smokey. 15psi on a 3 litre diesel isn't going to feel like much in almost 3 ton of landcruiser.
The stock turbo will be better.

Upgrade turbo option: Om605 / 606 mercedes - https://www.4btswaps.com/posts/815378/ Discussion: OM606 Thread/Info/Discussion - https://forum.ih8mud.com/threads/om606-thread-info-discussion.1331425/page-4

 

[TheBussman]

Before you get too attached to that CT26 turbo you should know it's not a good choice for any diesel. Especially a 3 litre one that's going to need a huge amount of boost to make the numbers you want.

CT26 is only good for about 15psi and being an old, inefficient, design will be laggy and slow to boost which makes it frustrating to drive and smokey. 15psi on a 3 litre diesel isn't going to feel like much in almost 3 ton of landcruiser.

100% he said it's upgraded, not sure what's been done to it, some are running Mitsubishi parts and machined housings. If it had TD04HL parts in it might be OK?

 

[Dougal]

100% he said it's upgraded, not sure what's been done to it, some are running Mitsubishi parts and machined housings. If it had TD04HL parts in it might be OK?

CT26 is too big for the size turbine that diesel needs.

 

[Minuteman]

nice work, ATS turbo? would be cool to run it twinscroll the 606 does respond nicely to twin scroll manifold. My Sean Tracy 1.5 tune was super smokey for me. All the mechanical cars I've setup ran a lot cleaner but there are so many variables at play.

I think it is this one, ATS CT26 Turbocharger Upgrade - ATS Racing - https://www.atsracing.net/Parts/Details/TUR-CT26
I picked the turbo up on MR2 FB pages for like $200. After my second event at road course(NASA-SE), I ended up yanking the 3sgte motor and swapping a 2GR.

I measured the compressor, 54MM IIRC. I think stock is 47-48mm something like that. I don't think the turbine or ex housing is messed with

I thought about the Quick spool from DPUK, since it is twin scroll. Was your motor running in an original E300D? Im curious, because I contacted sean tracy recently asking about inputs from sensors and what is absolutely necessary. MAP is 100% needed, which I still have to buy/wire.
He apparent turns off the MAF and "SOV Limp Mode".

 

[Minuteman]

CT26 is too big for the size turbine that diesel needs.

So your assessment is the turbine housing is too large, and 15PSI is not enough... I do believe mine spits 20 PSI since its upgraded. When I was looking up what guys are doing with the hybrid kkk stock turbos, both wheel sizes appeared to be similar. If I hate it, Ill go to this:

OM606 Hybrid Turbo | Benz Injection

Like the quick response from your stock turbo but want more top end? Want a better turbo without having to mess with adapters, fittings, lines, etc...? Our hybrid turbo is the solution! Better blade designOver 20% flow increase with larger 9 blade turbine wheel (49/55)Larger CNC performance...

www.benzinjection.com

 

[TheBussman]

I think it is this one, ATS CT26 Turbocharger Upgrade - ATS Racing - https://www.atsracing.net/Parts/Details/TUR-CT26
I picked the turbo up on MR2 FB pages for like $200. After my second event at road course(NASA-SE), I ended up yanking the 3sgte motor and swapping a 2GR.

I measured the compressor, 54MM IIRC. I think stock is 47-48mm something like that. I don't think the turbine or ex housing is messed with

I thought about the Quick spool from DPUK, since it is twin scroll. Was your motor running in an original E300D? Im curious, because I contacted sean tracy recently asking about inputs from sensors and what is absolutely necessary. MAP is 100% needed, which I still have to buy/wire.
He apparent turns off the MAF and "SOV Limp Mode".

Yea I had one in a e300, and I've built up several other cars for customers. I also ran that ats turbo on a project celica with a 3sgte too worked good in that application back in the day. May want to continue on your project, the turbo and manifold is easy to swap out later if you want. I know that a kangroos manifold and he250 with 6cm housing is a great setup for your power level, instant spool and prob good for up to 350ish hp if you wanted to push it harder. My friend is running it on his w124, very clean smoke free with his 7mm mech pump and 3" exhaust. Genuine holset turbo is available cheap too. you said that economy is important to you, low back pressure is a big part of that. I think one of the big design considerations of stock om606 manifold was to have high back-pressure to get the required EGR flowing, i think that's why the turbo version doesn't need an intake flap like the NA. On my e300 i ran a he221, welded the flange directly to the manifold, looked like a stock turbo but about the same size wheels as most the of the hybrid turbos out there at less then 1/2 cost. I had a stock 6mm pump I'm guessing it did get up to 280hp (i was at 30psi) but too smoky for me at full throttle. Stock 2 1/2 exhaust I'm sure was holding it back, still a really peppy everyday driver though sold it to a friend last year when my wife decided she wanted something higher off the ground. i have a programmer for sean's chips if you every need to re-tune.

 

[Minuteman]

Downpipe tied into stock exhaust

And then a valve body upgrade from transgo. Also, cranked the line pressure a notch. Hope to have nice firm shifting, it wasnt honestly that bad with the turbo. This kit has been sitting around my shop for a couple of years. Anyone interested, there is this great thread here.

A343 Transgo Reprogram Kit Install - 1995-1997

I recently installed a turbo kit on my truck and stock shifts were hurting bad. Very slow, lots of flare, etc. This reprogram kit costs about $100 and is different from the standard shift kit at around $60 because it includes drill bits to machine out the shifting points in the separation...

forum.ih8mud.com

And if you need video, lots of a340f videos in youtube to help install. Especially when trying to keep all the check balls in place. Took me about 4 hours start to finish.

 

[Minuteman]

Here is the pps harness, and pin out.

I repurposed the distributor harness(perfect length)and added one 18 gauge wire, and created a short ground. Fortunately the plug is labeled with the corresponding numbers in the diagram. The factory pigtail i got had different wire colors anyways(98), so this is the best way to make sure it is wired properly.


Here is your upper rad hose part number(oreillys), fit like a glove, no trimming needed

im probably shooting the dark here, but does anyone have the ability to post a picture of the back of the OM606 MAP sensor with pigtail inserted? I ordered an aftermarket pigtail that is not numbered. Thanks

 

[TheBussman]

Here is the pps harness, and pin out.
View attachment 3857993
View attachment 3857994
I repurposed the distributor harness(perfect length)and added one 18 gauge wire, and created a short ground. Fortunately the plug is labeled with the corresponding numbers in the diagram. The factory pigtail i got had different wire colors anyways(98), so this is the best way to make sure it is wired properly.


Here is your upper rad hose part number(oreillys), fit like a glove, no trimming needed
View attachment 3857999


im probably shooting the dark here, but does anyone have the ability to post a picture of the back of the OM606 MAP sensor with pigtail inserted? I ordered an aftermarket pigtail that is not numbered. Thanks

if a car comes in soon I'll take a pic for you. However there is a pretty good chance you'll want a 3 bar map sensor with that tune. you could use any 3bar sensor and connector.

 

[dturner]

I'm definitely going to be following this build! Planning a 606 swap with the doomsday kit myself. Did you looks at any of the turbo offerings from DieselpumkUK? They've got a Holset HX30 kit that claims spool as low as 1900RPM and a hybrid kit that's even sooner than that.

 

[Minuteman]

I'm definitely going to be following this build! Planning a 606 swap with the doomsday kit myself. Did you looks at any of the turbo offerings from DieselpumkUK? They've got a Holset HX30 kit that claims spool as low as 1900RPM and a hybrid kit that's even sooner than that.

I was super close to snatching their hybrid, but with exchange rates it was like 1800 plus shipping. Benz injection has got one as well. I really should have gone that route, so much simpler and cheaper. If only this turbo didn't say Toyota on it. HA