M923A1 multiple issues all at once

[sandcobra164]

Of course. R & S Diesel in Albany, GA off of Roosevelt Avenue. I have no affiliation with them but certainly appreciate a good job at a fair price. There's quite a few shops that won't touch these anymore.

 

[sandcobra164]

5 Ton is back together and ready to roll to the Ga Rally. I had a how dumb am I moment this evening when I couldn't get it to go in gear. The transfer case was still in neutral from the tow preparations. Anyhow, it is running awesome and somewhat stronger than before. I got to drive it around the block and even though the timeline is compressed somewhat, it is ready to go to Durhamtown.

 

[red]

Good to hear. Would recommend installing an EGT gauge now that your fuel is turned up. the NHC250 in my wrecker can hit 1400 F (too hot) with only the fuel pump turned up.

 

[simp5782]

Good to hear. Would recommend installing an EGT gauge now that your fuel is turned up. the NHC250 in my wrecker can hit 1400 F (too hot) with only the fuel pump turned up.

I think you are not metered right then. I am 20% up on my pump. No need to use more than 80 percent throttle and I cant even hit 1000 degrees grossing 72k

 

[red]

I was thinking that initially as well but testing says it's correct. At idle my gauge reads an average of 230, taking a laser thermometer reads similar at the collector of the manifold. Same thing when I crank it up to 2100rpm, the gauge is giving me a similar reading as the laser thermometer (given about 30-60 seconds for the manifold to heat soak). I know laser thermometers are not the most accurate in the world but that's 2 sensors reading similar temps in the same location.

Keep in mind I'm at roughly 4500-5000ft elevation in the mountains with a nearly 40k pound wrecker.

 

[sandcobra164]

I blew quite a bit of black smoke at higher speeds on the way home when floored for a short distance. I finished the air canister mod this evening so I am using almost all of the air filter media now and I washed it out 2 nights ago. My observations. It shifts around 2,000 rpm now whereas before, around 1,700 to 1,800. The engine seems much happier and pulls quite a bit stronger. I need to adjust my throttle pedal as I know I'm no longer hitting wide open throttle on the pump after the rebuild of it. I need to drill a new hole in the throttle lever about an inch below the current hole but leave room to stifle interference with the transmission kickdown cable.