Cummins 350 Small Cam Manual
Got the NTC 350 from a 77 OTR truck yesterday. Thing supposedly has a rod hangning in it but I find no damage to the oil pan or block, need to pull the pan and look. I bought the thing from an old farmer for the turbo setup, aftercooler, and the 25A Jake setup. So for $200 I aint out much if the bottom end isnt rebuildable. So, Im pulling the above setups and cleaning the surface rust/gunk off, The turbo is a AR12600 or VT-50.
I took it apart and found the square bearing retainer plate/bearing is stuck to the compressor side of the shaft. I soaked it in Kroil last nite and will attempt to work on it some more tonite.
Does anyone know much about these old snail shells???? Namely, what to watch for or tricks to dissasembly, Is there a rebuild kit availible.??????? For $200 you have a good start take pictures. With used Cummins engines any thing is possible. One truck I drove had a 290 small cam It was very durable engine but a little slow.The owner pulled it to rebuild and turn up the power and found out there was no rebuild kit for it the engine was made from other parts engine.
So it was put back together and ran for another 4 or 5 years that I know of. It was just not worth what he would have in it. Hoping to be able to rebuild the bottom end of the 350 and pull parts from my 250 to make a complete engine. This 350 was supposedly pulled due to a rod knock or (they said it tossed a rod). The guys son had all kinds of logging equip at one time and they are both world class cobblers of crap. Booger welds and modifications that most of us would only shake our heads.
Either way they pulled the engine and got a crate engine to replace it. This 350 was stripped of anything that the crate engine didnt have.
If the bottom end isnt good then I will just put these heads/jakes/turbo setup on my 250 in the M816. But I would like to have the whole 350 in there. Would it be possible to use the 250 crank in the 350 block if the 350 did toss a rod,???????
Got a jake and the aftercooler pulled last nite. The jake is scuzzy but the residual old oil looks to be doing its job. Good cleaning and a jake kit and this should be ok.
The aftercooler looks intact, will pull it apart soon and have it pressure tested. Turbo is still pretty sad.
Cummins 350 Small Cam For Sale
The housing on the compressor side has a crack in it. And the drive shaft bushing is seized to the shaft. Busted the flange trying to seperate the two last nite. Should I keep the VT50 or source a HT3B????????
Talked to Blaylock turbo in KS and they will sell me a turbo cartridge for around $300 for the VT50, rebuilt and ready to install on my snail shells. The local yard here had a BHT3B used on a core engine he wanted $400 for plus my locked up core for replacement on his engine that was going to a core company, I thought that was too much, would like to use the HT3B for ease of finding parts, but $400 plus a kit and Im headed towards $600 and alot of bench time for me puttin it back together. Swap of the VT50 will be cheaper and easier in the long run.
Holset is a better turbo than the VT50. They, the VT50 are known for constantly pushing oil into the intake. The only thing you should need is a drain line conversion and an adapter for the pressure line. I would rather have the Holset, however this salvage yard guy is a slickster, I will likely rebuild the VT for now untill I can find a good ht3b that I can go through in my spare time. Now I just need the reassembly specs for this jake head that I have scattered all over my bench. Pulled the installation manual off the Jake website the other day, but its gonna take some arse scratchin to figure out how to put it all back together as my nice pretty layout got knocked over. And I dont remember how many turns per the set screws.
Cummins 350 Small Cam Manual Motor
Would like to eventually either swap the heads and pump from the 350 over to the NHC 250, or rebuild the bottom end of the 350 and drop it in. If I do swap heads/injectors over to the 250, I will try to pull the button out of the 350 pump and swap it into the 250, as the ressurection status of the 350 pump is questionable.
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