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We rebuild light duty cylinder heads in house. As long as the crack isn’t into the deck surface we machine the crack out when counterboring for oversized hardened seats, no welding necessary. 6.2 and 6.5 headgasket failures are not exactly common unless they are abused or subjected to cylinder...

I wanted to do 37's strictly due to final drive ratio's but I am going to use this truck every now and then as a service truck and it was going to be a little to tall with 37's. The cummins actually fits very well. They are getting a little spendy but I have accumulated a few over the years...

Yes I have run the pump on the bench with a drill motor returning back to the reservoir just to verify it wasn’t aerating the fluid. After I verified it wasn’t aerating on the bench I ran the pump with a drill on the truck as well. Drill didn’t have enough power to spin it fast enough to make...

You are correct, it is a grenade with the pin out if you modify it. I personally think the majority of the issues with stock 6.2's in these cucv's is excessive rpm's due to gearing. Yes they will pull the rpm's if you hold the pedal down, no they don't seem to enjoy it. Leave them stock and they...

Wow! looks like my thread got hijacked! I've been working on light duty diesel's for my entire career. Good luck to this guy installing turbo's on his 6.2 lol. We were involved with a 6.5 TD build years ago... Converted to mechanical pump, Hummer block, all the internal goodies that are...

The reservoir is circled in red in this pic. I have pulled a vacuum on the reservoir with the engine running and engine off multiple times no change. The pic shows the old location of the reservoir. The large rubber line that I drew the red line on was the pump feed line when I got the truck. I...

Yep have put a stethoscope on everything. It’s 100% the pump causing the noise. Odd thing is you cannot hear it without the scope outside the cab. The hydraboost is transferring the noise into the cab sheet metal. I could bypass the hydraboost and I’m sure the noise in the cab would be gone but...

That’s exactly what I wanted to hear! Thanks for the info. I’ll order a pump and maybe the 6.2 can stay a little longer.

I installed a flow/pressure meter on it and it made 1300 psi and was between 3.5-4 gpm. That doesn’t mean it won’t make noise but usually steering pump noise = aerated oil which it doesn’t have. One finger steering lock to lock at an idle on concrete. Only issue is noise in cab. If it is the...

I'm guessing the light bar was not a military-installed part? It does work perfectly though so it's gonna stay! For now I'm gonna keep it as is, don't want to put much $$ into the drivetrain, I've got a 12v cummins and 47re that will eventually make its way into it. The generator/governor works...

ATF

From what I can figure the truck was repowered with a 6.2 out of an HMMWV at some point because it has a serpentine belt setup, HMMWV power steering pump with remote reservoir, CC rotation water pump, and HMMWV generator. The fan appeared to be an HMMWV unit with a billet aluminum adapter to...

Made a few changes to the M1031 I recently picked up. 4" lift (ORD rear shackle flip, BDS front springs) 35's on black steel wheels painted green. Led headlights. Pretty happy with how it turned out, actually rides pretty good for a square body. Rear driveline angles are not right but I can't...

Correct, it is a latex water based paint. I chose this based off of a bunch of members on here that have had great luck with it. I was 100% thrown off as well. I used a 1.8 tip on my hvlp. Had to crank the pressure up and flow down to get it to atomize ok. First coat I layed ended up being a...

I picked a gallon of Behr marquee today, thinned it with water and floetrol ( what the paint guy suggested) and sprayed the first coat tonight with my hvlp. It layed down fine for matte finish. We will see what it looks like after the second coat. Color looks good. Are others using a hardener? I...

Thank you sir

Is the 383 Green the correct base color for these trucks? Mine is an 86' M1031 with the standard camo paint. I have dug around here and found a ton of info and links to other sites that give contradicting info. What I have found is this code seems to be most likely the color I am looking for...

That’s a good question. I will have to look at that. I assume yes as the hydro boost and power steering work perfect, the pump just screams at higher rpm’s.

thank you for the info. Yes someone did a very clean job for sure. Hopefully I can get the power steering cavitation figured out.

I just picked up a 86 M1031. It has a serpentine belt setup with a massive single alternator. From what I can find it appears to be commonly used on the HMMWV ? Was this a common upgrade or did some of the CUCV’s come with this setup? Everything works fine but the power steering pump has a...