Search results

He's not wrong but IMO the C7 trucks are worth a reasonable markup on the entry price. For one they are rare. Only about 1/5th of the non-LTAS trucks were ever made as A1R C7 trucks. The military still owns quite a few with National Guard and Reserve units so they will continue to trickle out...

Yes..... what serial number is your truck and what information do you need? I show the manual for M1087A1 as TM 9-2320-391-13&P

Unplug it and check the voltage on the bus. And yeah - what diagnostic tool are you using exactly? I would be checking that it was plugged in correctly and nothing is shorted because burning up a termination resistor is some serious shit and I would be worried it could damage modules on the bus...

That would be a pretty wild thing to "burn up" as the J1939 bus is all low voltage. I have never heard of such a thing and I deal with CANBUS regularly enough to know what the high and low waveforms look like...... they are typically +/- 1v.

No - there's TWO chains. The lifting chain with the threaded clevis and then a SAFETY chain that goes around the wheel and attaches to the spare tire frame with spring hooks. You can see the safety chain hanging from my van frame to the right of the carrier:

Isn't that exclusively a 3116 issue? 2003 A1 should be a 3126b. There's still an oil supply line to the HEUI pump but I'm not aware of a specific flaw in those. Definitely inspect though.

Rear main seal. That is the drain hole - the bell-housing fording plug (to the lef) is in it's stowage position. It should be in that configuration unless you are fording deep water. Although it looks like there's oil forward of that port on the bell-housing also. More pics needed. Also the...

What are the wire numbers going to this termination resistor and which engine/WTEC version does your truck have?

Fortunately I started hearing this psshhht, psshhht, psshhht noise in time with the rotation of the wheel (didn't put together the timing in my head right away as this was occurring in literal real time) as I was slowing down on an off-ramp from the freeway. At first I thought it was either a...

Yep. Anything over 10 years and you are risking this action (my trucks original 2008 tire with 10k miles on it):

There's absolutely nothing wrong with being satisfied with the 3116. It is an acceptable (some might even say good) engine and if it meets your needs then there's no argument I can make against that. And none of this discussion went off on tangents. The discussion is about the 3116 or the 3126...

You throw stones without explanation. Peak torque is peak efficiency. So exactly why would I NOT want to cruise at closer to peak efficiency? Please enlighten and please use science rather than emoji. Thank you.

You'll have to prove that to us. I have seen no evidence to support the claim of a twin turbo C7 (not C7.1) existing as a production model.

As the owner of a performance shop with a chassis dyno I wouldn't buy anything from that type of web site. That's likely to blow your engine up or do nothing or next to nothing. It's a "piggyback" device that's going to take engine sensor inputs, alter them, and re-transmit the altered data to...

Actually the point isn't to go fast or burn more diesel. The point is to increase fuel economy - in conjunction with the 3.07 differentials lowering the RPM closer to peak torque and also increasing peak torque the engine will not be working as hard at the same speed (50 - 55 mph). This will...

Torque is the important factor and that's why CAT charges for rerates based on torque not on horsepower. Yes I am exceeding the torque rating by about 60 ft lbs. I concede that. In the scheme of how these vehicles are used and what they are rated for - considering my example of the A1P2...

I have ordered the water cooled turbo that is used by the 370 HP RMF engine if that is what you mean - that's the only difference I can find. The requested and delivered boost pressure is dead-on with the 370 map and my stock turbo. I don't think in practice it will matter with the high quality...

There's really zero evidence that reliability is significantly altered. That's an unsubstantiated claim. Where's your evidence for this? I have provided examples showing the manufacturer has no concerns with this engine at this power level pulling over 4x my weight in conditions I will...

The Oshkosh M1240 M-ATV uses the C7 @ 370 HP. This in an off-the-shelf dyno tested CAT sanctioned flash for this engine. The M1240 weighs 25k lbs BTW. The flash file in question is dated November of 2009. No one in the military or CAT has seen fit to derate the engine from that specification...

Yes the 3116 isn't a bad engine - as you note it absolutely needs help cold starting so maybe a heated blanket for tabby.. The EFI engines really don't exhibit that behavior. More of a snow leopard than a tabby. And I agree - I cruise at 50 mph. I'm also out to enjoy the ride. But the 370 HP...