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This just in.. M1148 (though technically a M1148A1R). Pretty dang rare. I'll get into it next week to see if she will fire up. No fuel, bad batteries, etc.
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What have you done to your FMTV or LMTV today
- Thread starter Coffey1
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Another Ahab
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Where did you pick up that bad boy, fuzzytoaster?!
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..but seriously it's not that exciting. People contact me and we make a deal. Simple as that.
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Not what I have done to my 2008 M1078A1R, but will be doing now that I have finished my complete restoration of the C7. As all of us running the 370/931 tune know, the only difference between our C7's and the 370HP variant in the Stryker is the water cooled turbo, CAT part# 290-4044. Just picked this up brand new, not a reman, for $1000. It's a little over $4000 new from CAT.
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Nice score, did you experience any issues with the stock turbo? I don't want to kill my stock turbo running the 370hp tune, but I'm assuming the liquid cooled turbo would only be needed when operating at the extreme end of the performance envelope.
Another Ahab
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Yikes. $4K seems pricey.
But supposing a lot of expertise and precision going into the making of a specialty item like that.
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No issues with the stock turbo. The C7 in the stryker is crammed into a very tight armored compartment so cooling is more of an issue. It's also way heavier than our trucks and designed to operate in a climate where ambient temps north of 115+ degrees aren't uncommon.
That said, high EGT's are the death of diesels, so anything that helps manage that isn't a bad thing, aside from the addition of more coolant lines to potentially fail.
Another Ahab
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And, yeah, a Grand seems a whole lot more reasonable.
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Yep. The coolant lines for it are the fun part to track down. CAT can get them though some are special order and you have to wait for them to make you one. The M-ATV is actually the 370 HP variant of the C7, and the more common source - over 10,000 have been built. The Stryker uses the 350 HP variant and less than 5,000 produced.
I think that turbo is closer to $4500 from CAT. I also found one new old stock surplus for $450. I have yet to install it but I have all the parts to do so. I've got a friend with an M1088 based overland rig that has the complete M-ATV crate engine with water cooled turbo in his truck due to a cracked cylinder on the original engine.
I think that turbo is closer to $4500 from CAT. I also found one new old stock surplus for $450. I have yet to install it but I have all the parts to do so. I've got a friend with an M1088 based overland rig that has the complete M-ATV crate engine with water cooled turbo in his truck due to a cracked cylinder on the original engine.
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I just got a egt derate code on stock turbo ..but also had a boost sensor error as well as injector 5 current error. Haven't done the 370 tune but with the hills here and my weight over 30k making me a little nervous. May have a bad boost sensor (atmospheric failed recently) and that may have triggered the derate as it was a one time occurrence in cat et. I've seen the injector issue twice, maybe a wiring issue, hopefully not an actual injector problem.
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I converted my '98 3116 to a watercooled CAT turbo. Made my own lines.
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I would caution that the CAT water lines have flexible stainless braided sections to account for thermal expansion between the 1200 degree exhaust and the 200 degree engine. Hard piping it like that is asking for a stress fracture near one of those fittings.
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I found them in CAT SIS without issue. My experience with my local CAT dealer is if they don't have the hose/line in stock, they make it while you wait. That said, a line with a section of shaped hardline would need to be ordered. I'm hoping the coolant line for the water cooled variant doesn't use the outlet on the thermostat housing that the heater hose is connected to. Don't want to rework that as well.
Would be awesome if you could post photos from your buddy's motor showing the coolant and oil line routing.