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Hello, Apologies for the thread necromancy (I run the Hummer Network Forums so I know how it can be annoying) but I feel like this is an applicable update to the thread as I have a question for the 6.5 gurus. This past weekend I finally added the electroviscous fan clutch to my H1's brand new...

If you've got a loader with forks that can get high enough then that's the way to do it. I'd actually attach straps to the forks and lift the RTT up that way. Finding a place to store it away from rodents during the winter is, for me anyways, the more difficult challenge. One thing that people...

Will, you know who runs the show over there, and if you want to call out MM for that, you're more than welcome to do it. Per my fuel pressure gauge, it gives the required pressure per the hummer service manual - even on WOT. I know that this number is low and yes, I'm going to address it Dad...

That person who took a risk he doesn't agree with is me. I put a UORVA mechanical lift pump on my P400 to resolve the issue of the driver's side downpipe with my UORVA turbo on the H1. I had the same setup on my Cursed H1's P400 as well. The bladder even blew on the previous one but I was...

Perhaps. Indeed it was in poor form. I apologize. What I'll say about the P400's is that... you never know. The may go back into production someday. The thing about the P400's is - from what I understand, Uncle Sam didn't feel the need to pony up more for the P400's for the Humvees. They...

Replaced these with the Harland Sharp rocker arms during my new P400 build. They have 0 miles on them and the only action they saw was the test fire on the GEP factory floor earlier this year. SS Diesel supply has each rail (set of 4 rockers) listed for $200, so I'll take $150 + shipping for...

Thank you Will for starting this thread. I have to admit that he likely did it to answer my question - which was "does the H1 have a special passenger side valve cover?" I was told by a H1 expert that the driver's side was the same as the 6.5 truck valve cover, but the passenger side was...

Ok ok Ok Uncle Will! I'll get the trinary switch. From your post on that thread I think you're talking about this one on top of the dryer. I was going to do the wiring for the swap then let my diesel guy up here do the clutch install since we're going to need to find a good spot to put the...

Yup thats in the cards Will. In fact the "ON" switch position will just be spliced into the AC wire on the controller somehow - without risking turning on the AC :P For the AC on wire would you just go for the AC Compressor clutch wire (as it states in the controller instructions or off the...

Thank you for confirming! I've got a similar plan in mind with an ON-OFF-ON switch in the cab. It'll be Auto(sender controlled), Off (for water fording) and On. The LED on the switch will be fed by the blue wire. I'm going to splice the "Always On" wire into the AC-on wire on the controller...

Hello All, I've collected all of the parts to try this out on my H1. As ak diesel driver undoubtedly knows, here in Maine the colder ambient temperatures delay the onset of the thermo clutch and my temps spike up close to 220 before the fan engages - and with a brand new P400 installed, I...

Sure thing - this is the fitting I'm using. Note that I do have a FTB mod as well. https://www.amazon.com/gp/product/B07CJW6CDN Yes, I know it's aluminum and it's not the best - but the rest of the fuel line hardware is aluminum already... Another H1 owner posted this fitting on the HML, but...

Got the sender installed. Just need to do the wiring and the dash work.

Thanks Will. I'll be sure to report back once the fuel pressure gauge is in place. I think I put together a parts bag of adapters to get the sender mounted right at the IP inlet. Only one aluminum part - the rest is SS.

Hey there! Got a bit of a mystery on my hands. My brand new P400, with brand new IP and PMD < 1 year old has an issue where, after I've driven it a while, usually on the highway - and gotten the engine nice and toasty (on the H1's that means up past 205) - then when I come back to a stoplight...

Awesome! Thanks all. I'll be sure to post pics when I get the contraption put all back together again. From what Will has been saying on the H1 forums, there's a real need for a kit like this for the DS4. I might be able to convince ModMafia to put one together.

Hello There, I am assembling the components to install a fuel pressure gauge into my H1. I've got a mechanical lift pump going into my DS4 so I'm really keen on getting a pressure reading going into the IP. I have a FTB mod already installed. I've found a stainless AN6 Tee that I can use to...

Hey there, Will.L brought me over from the Hummer Mailing List forums. He's helped me out a ton with my rig so I figured I'd come check out where he haunts normally. I own a 2000 HMCS (Hummer H1 Wagon) that I picked up in October of 2018. I am in southern Maine and I bought it from a dealer...