OT/ big trucks/Doug TJ \'97
Hey, our 1989 RW613 has the Mack 500 E9 V-8 in it...with the 12 speed (extended range) tranny. Too much power? No such thing! Ya can't even get the E9 anymore, but if I was building my ideal motorhome...ya can't beat the sound or the power of that motor. Yep, torque peak of 1200rpms...ours is geared to do 55mph right at 1200...so if you wind it out to 2300, she'll do...[img]/wwwthreads_images/icons/blush.gif[/img] The 400 was governed to 1850rpms. The 450 and 500 were governed somewhere else(apparently depending on the mood of the engine builder that day...) The 500 has different injectors, and a slightly different injector pump (they're interchangeable, but different)...BTW, it's 998 cubes... Ours has 488,000miles on it...we put in new injectors at 350K, and pulled the pan and did the bottom end at the same time. Not a single bearing was looking worn, and we couldn't even install oversizes...but we had it apart and did it. Other than that, it's on its original driveline (second clutch, but original driveshafts, u-joints, and rear-ends)...been used for gravel and grain hauling its entire life. The injector pump has never been touched (or "tuned up")...and she'll turn an honest 2300 rpms if you hold on to her.
What'll run with her? Well, when the big cummins 525's came out, they were supposed to just put her away. No way. They can't stick with it at all. A 525 with an 18 speed shifts 10 times, while I go extended range to direct 1st to 2nd to 3rd, to 4th...and when I hit 4th, I'm gone (talking like it's a 5 spd--not splitting any gears). Running against a 550? Split 3rd gear and you can scrape away when you grab fourth and fifth. What about a big CAT 600? Well, that's a bit trickier. If you use the engine brake to pull down the RPMs in between shifts so you can really slide through, you can either run with them, or just eek away a bit...that's all on flat surfaces at stoplights. Add in a grade, or give me a running start, and even the big 600 can't run with our "Big Dog."
Ok, so you got me. What's a "Yamahauler"?
I will admit that there's a truck that used to be able to pull away from the big dog. Before I was driving it...reputedly (and I can't say as I ever saw it) there was a cabover running a 675hp v-12...and once again, reputedly, if the driver stepped on the skinny pedal in any low gear, it would either pretzel a shaft or lift the left front tire off the ground a foot. Now, as I said, I can't testify to the truthfulness of that statement, but the man who told me hasn't ever lied to me before. Ever heard of/seen one of those? I heard a story of it pulling the grade out of death valley at 50mph steady, loaded, and running the whole grade in a hair over 20 minutes.
I'd really like to hear that story about the house foundation. On road or off, with a camelbak suspension, the integrated torque divider, a 500hp v-8, and a low gear, if you find yourself pulling (or pushing) something, it's either gonna move or break. Ok, lay some big stories on me.
P.S. When they finally do devise a motor that can run away from me, I've got a trick ready. Take an air switch from a dump gate or 5th wheel slide, and plumb it into the reversing relay on the front of the injector pump...normally, leave it alone and let the relay work as usual. When you get into a real tussle, flip the switch to cut off airflow to the relay...letting the rack open all the way instantly, and that's one mean dog. Our relay was leaking for a while, and for the week before we got it replaced, if you even thought about putting that pedal down, the truck was already halfway through the next state.
Currently looking for corporate sponsors for jeep improvements...will sell advertising space on jeep, will also sell soul/body...make an offer.