HMMWV M1123 Build Thread

Vapor Trail

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SO I got my M1123 in. I'm mechanically inclined but I haven't done much automotive work. My plan is to do something like the Predator ATVR-6 (internal cage, not exo). I'm going to Line-X Ultra the outside and inside, build a cage, new bumpers, new gauges, all new wiring, brakes, halfshafts, tires, and wheels. For the powerplant I think I'll get an aluminum 6.2 liter L92 or a L94 and a 6L80 transmission. Probably put lockers on it too.
 

Vapor Trail

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I’m not a fan of body lifts but I see why they’re used in these vehicles so often. I’m building one now but not just cheap spacers. I’m making the four corners from scratch 1.5” taller. Not just for bigger tires but when Govplanet picked it up it squashed the body where the forks were a little bit because the body sits lower than the frame. I have a big forklift and if I want to pick it up I don’t want to worry about board spacers. More pics as I move along3A4E7DE1-AD19-47AC-AA66-FA727B04002B.jpegDA968BBD-8C4F-4FD7-B14D-E490287E241B.jpeg
 

Vapor Trail

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So for the lift I put spacers in the middle but on the ends I built new body mounts which are much lighter but just as strong and they incorporate the holes for mounting the bumpers. I took off the existing ones and measured them and made my changes but I didn’t build them square in the shop. I built them in place on the machine so that the important surfaces would be straight and even. This made for ugly and misfitting joints because the frame rails are so cambered and castered out but now the hood mounting surfaces are perfect and the cracking fiberglass is no longer in a bind.
30836992-BE51-47BC-B725-D7536E5D4563.jpeg58F59F01-E186-4307-B3BF-A52429432237.jpegB1C89618-C197-494D-A6B2-969DF8F55B13.jpeg
 

Vapor Trail

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Also, I realized the way it originally sat the rear top fender surface wasn’t parallel with the other straight surface which is the door sill area. I used the rear mounts to straighten that up so that gap between the two looks correct now

ABB4C214-BC72-46C7-9958-18EBDE24B52B.jpeg
 
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Vapor Trail

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Looks great! Did you tie the rear section into the frame somehow?
I thought about tying it in to the bumper but it’s mostly just for aesthetics. I don’t want to get rear ended or back into a rock and it tear up the cage too. All the cage points are around the edge and the frame is way inboard so it’s just not worth the effort if you aren’t into heavy off-road stuff
 
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