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Let me guess,the V903 in the 123 series has some minor differences that are only for government use,and are not used in any civilian application?

Understand completely Will,I'm definetly going to ck overhead and Injectors first,just trying to throw out all the info to this forum I can.I'm used to working on engines in the 30 liter range(or larger!)usually most of the engines I've dealt with that fail,fail catostrophicly.I would rather not...

I don't believe this noise is normal,VERY PRONOUNCED HARD knock on pass side bank of cylinders,either # 2 or 4(I could be wrong here).I have heard 903's run before(RT crane at work)and this one sounds like you threw a handful of 1/2 in ball bearings down the intake!I'm planning to pull valve...

Sucess!!(sort of),got the 123 fired today about 6 pm.I wasn't pleased by the sound at all though.Lots of metal to metal noise high in the engine,needless to say I didn't run it long(30 sec maybe)Had oil press,about 45 psi.So next step is,pull cylinder heads and investigate the problem.Actually I...

Buggyman,There is already a convoy to Aberdeen yearly.Contact CGarbee here on this site for further info.the route goes right up I-95.

I use 15W40 Shell Rotella and Baldwin filters in all my trucks with great sucess.I use Shell Rotella because it's avaliable in 55 gal drums at my local Sam's club.A 55 gal drum lasts me about 2 years.

Well,didn't get the engine,it wen't for $1070 and some change!Darn GL is getting astronomocal!

Will this V903C Cummins fit the M123 series of trucks?It states it is for the 939 series.I thought the 939 series uced the NHC 250 and the 8.3 C Cummins.If it will fit the 123 series I may buy it it...

Tried again today,4 4LDT batts in series parallel,getting fuel out of the FSOS getting fuel out of the return line from the heads,still no fire.The engine still will not fire off of ether,or anything else for that matter.It still may not be turning fast enough,I guess I need to pull off the...

Well,cleaned all batt and starter connections+added a second ground cable from the frame ground directly to the starter ground.It did turn over faster,just not fast enough(75 rpm maybe).I think i'll have to get two more fresh batteries and try with a larger set of jumper cables to the...

Not to change vehicles but what do most 800 series vehicles (Cummins) idle at speedwise?

Will,I'm not sure if it has a 903 or the earlier 785 ci Cummins.I have worked on the 1710 Cummins(V12)are these similar?Being as I barred the engine over by hand(very slowly)It would have stopped turning if the valves were stuck in the open position wouldn't it?I wouldn't think I was strong...

According to everyone I talked to,about 10 years.Valves are a possibility,Imay pull the valve covers tomorrow.This could very well be what's wrong with the Mack engine in my M52 as it runs but misses.but it comes and goes plus it has a new injection pump and injectors.Come to think of it I never...

Well,got the grill and radiator out of the way on the 10 ton today,hooked up the batteries and slave off the 816 and the Deuce.I spun it over with a 3/4 drive rachet first (to make sure it wasn't hydro locked)spun it over with the starter for a total of about three minutes and it won't fire,even...

I also have a pioneer tool trailer but mine must be the earlier version as it does not have a flat spot between the doors.

Welcome to Steel Soldiers.Quick ?,what is the delivery date on your 38A1?

Techinicly they aren't as they were forbidden to do so while in service,but they will,just watch what you're doing and remember SAFTEY FIRST!!!

David,were you ever able to place my M35,I sent you the serial no. and reg no.they were 0125-27468 and NKOCAN.It is a Kaiser/Jeep M35A2C W/W.

M1075,I'm still looking but it seems that no one makes that size for road use,off road can be found all day long.I'm sure someone has a set of 14:00X24 Non-directionals squrriled away somewhere(I need 11).

M123A1C hooked to a M816,notice the extreme slope of the towbar,This makes the 816 have a "rubber band"driving effect until you get up to speed(if you ever do get there!)