M925a2 Power Surge

[red]

Nice find. That's similar power numbers to the older Cummins 400 big cam. Since you run empty most of the time the motor should live a long life. The 'short life' of those is what, expected for 300-400k?

The engine computers are usually voltage specific.

Other than that the engine electronics are pretty compact like you said.

Oh, upgrade the fuel filter setup. Cleaner fuel is always better but it's even more important with the common rail engines.

 

[gimpyrobb]

Let me know how much the 915 transfer case costs you!

 

[86m1028]

Let me know how much the 915 transfer case costs you!

I haven't been able to locate the transfer case on my 915 !

 

[74M35A2]

Shows what I know, and don't.

 

[Csm Davis]

Okay now the cat is out of the bag, where did you get it?

Sent from my SM-G930V using Tapatalk

 

[WillWagner]

The pressure filter on the engine will be fine, just make sure you install a good rock catcher filter. And stay with Fleetguard filters. And, I think you can go to 450 HP with that engine.

 

[74M35A2]

10-4, my 925a2 is one of the few that did come with the larger frame filter additionally which is usually found behind the driver front tire of previous gens. I'll have to go electric lift pump I am guessing, no big deal, kind of wanted to anyway.

CSM, I scored the engine literally a few blocks from you I believe, was an interior burnt motorhome. Hopefully not an insurance job because the motor is toasted. Guy bought it from auction for the diesel genset. It was one of the $400,000 type models. So, I'll be heading down there, maybe I'll stop and say hello, you can punch me in the eye or ask for a date with my sister.

red, yeah that is what I am thinking. Typical medium duty life expectancy is 600,000, so even if I cut it by 2/3rds, we are still at 200,000, or 100,000 remaining. Good enough.

450hp, that would be enough to drag grendel and Simp down the street sideways simultaneously, especially once we are sporting the 915 t-case.

 

[infidel got me]

As many times as you run out of fuel-- I'd recommend two or three electric lift pumps. baaaahhhhaaaa

 

[Csm Davis]

As many times as you run out of fuel-- I'd recommend two or three electric lift pumps. baaaahhhhaaaa

Maybe he needs to hookup to a tanker so he won't forget to fill up

Sent from my SM-G930V using Tapatalk

 

[Another Ahab]

Maybe he needs to hookup to a tanker so he won't forget to fill up

It's almost like suicide, but there are ways to do it.

 

[Csm Davis]

Dang I know they had water setups like that but fuel?

Sent from my SM-G930V using Tapatalk

 

[Another Ahab]

I'm pretty sure you DON'T want to run your tires too hot with this set-up.

 

[74M35A2]

Cute.

Just need to pull my tank apart and make a new dip tube, or tighten the depth adjustment on the fuel gauge. First time, gauge did not work. Replaced gauge and sender. All times after that, trucks runs out at higher and higher gauge levels. Was first 1/4 tank, then 1/2, most recent 3/4. So, the dip tube is either dissolving, or the level gauge is dropping lower and lower into the tank.

 

[simp5782]

Cute.

Just need to pull my tank apart and make a new dip tube, or tighten the depth adjustment on the fuel gauge. First time, gauge did not work. Replaced gauge and sender. All times after that, trucks runs out at higher and higher gauge levels. Was first 1/4 tank, then 1/2, most recent 3/4. So, the dip tube is either dissolving, or the level gauge is dropping lower and lower into the tank.

Maybe you should just make it easy on yourself. Drill a hole weld a half 3/8" fitting to the tank. Top and bottom Install a clear tube so you know how much fuel you have by just looking in the mirror. It's for those special people.

Sent from the seat of M923A1 with it's Rainbird Ram air intake system.

 

[Derrickl112]

.

 

[WillWagner]

The engine you will be getting has a lift pump on it, if it is common rail, that's something I forgot about that will need to be trade out for a 24v one. The pump stops running after a few mins and the gear pump on the back of the HP pump does all of the work after that.

 

[74M35A2]

I need to pull and check the pickup tube, have not done yet.

Cummins usually uses a standard Carter vane pump, at least on their ISX, so that should be easy to get, if I am running it off 24V, depends if ECM can handle it or not. Cummins would want more for a new ECM than I am getting the entire engine for. So, if it requires a different ECM to run 24v, it will stay a 12v powered engine. ISL transfer pump may be different though. We'll see when we get it.

Anybody else done any engine transplants in an M939?

 

[WillWagner]

ECM Should be GTG for 24v. You will need another lift pump. No Carter pump, it is a piston type and mounted behind the ECM....change it BEFORE you install the engine!

 

[74M35A2]

Thanks. Heard may need to do same with turbo actuator?

 

[74M35A2]

Still learning. The ISL comes with steel dome topped 2 piece pistons. There goes EGT concerns. Was wondering how they squeeze 400-450hp from a stroked 8.3L, reliably.

I really need to figure out how to retain and pull my transmission modulator cable when using an electronic accelerator pedal.