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Joined: Jan 2001
Posts: 21,317
Campfire Ranger
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Campfire Ranger
Joined: Jan 2001
Posts: 21,317 |
Not impossible, one could always install a computer controlled fuel injection controller. I can't see why one would do so, but any thing is possible when common sense and budgetary constraints are ignored.
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Joined: Mar 2009
Posts: 7,177
Campfire Tracker
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OP
Campfire Tracker
Joined: Mar 2009
Posts: 7,177 |
Not impossible, one could always install a computer controlled fuel injection controller. I can't see why one would do so, but any thing is possible when common sense and budgetary constraints are ignored. Lol, ok. Or they could buy a 24 valve.
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Joined: Jul 2005
Posts: 23,494
Campfire Ranger
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Campfire Ranger
Joined: Jul 2005
Posts: 23,494 |
My 97 has 253K miles and still going strong. 5 speed manual. Definitely not stock. I replaced injectors, turbo, air system, and a bunch of other stuff 10-15 years ago. I've also been running an exhaust brake since 2000 with no problem. Don't know where that myth came from! Pulled lots of horses and at least 6 bumper and fifth wheel trailers and 4 of the biggest and heaviest Lance campers. Best of all, it has the brakes to stop them.
The engine gives over 375 horse power with almost 700 foot/pounds of torque. Used to get 18-20 around town, 22 on highway, but now doing only 18 for everything.
I've have many offers from douche bag 20-30 somethings wanting to "build" it and drive around town with the tow mirrors up all the time. Mirror [bleep]! I'd never let this truck go to one of those dicks! What tuner you running to pump out 160 more hp and 260ft lbs more torque out of the 5.9? You tune a 12 valve with a screwdriver. That's why I love em. Its impossible to use a "tuner" or a chip on a 12 valve So with a screwdriver one can crank out 160 more hp out the 12 valve 5.9??
Then STFU. The rest of your statement is superflous bullshit with no real bearing on this discussion other than to massage your own ego. Suckin' on my titties like you wanted me.
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Joined: Mar 2009
Posts: 7,177
Campfire Tracker
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OP
Campfire Tracker
Joined: Mar 2009
Posts: 7,177 |
Pretty much. It's the cheapest, easiest diesel to make power with. You might upgrade the injectors, mod the fuel plate, advance the timing and add 4K gsk springs but you use a screwdriver to do all that so I guess the answer is yes, with a screwdriver. Point being it's all mechanical so you don't chip it because there's nothing to chip unless you do as 458 Lott said was possible and add computer controlled fuel injection which defeats the purpose of buying a truck with a 12 valve anyway
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Joined: Jun 2001
Posts: 19,067
Campfire Ranger
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Campfire Ranger
Joined: Jun 2001
Posts: 19,067 |
I'm sure no diesel mechanic, but do some of my own work. Someone mentioned you cannot put a compression brake on a 12 cylinder Cummins. .Mine is a 98 &1/2. First of the 24 valves back then. My user manual on the compression brake that I had put on in 99,says not to install in a 12 valve diesel as they require a 60 pound compression valve spring. Changing out the valve springs to that spec or above will permit the compression brake to work. At the same time it said not to use on an automatic transmission. Since then, with automatic lockup torque converters, that may be done. I understand most compression brakes are electric now. Mine is vaccum operated. ONlyrelayinhwhatmy manual says
If God wanted you to walk and carry things on your back, He would not have invented stirrups and pack saddles
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Joined: Mar 2007
Posts: 9,209
Campfire Outfitter
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Campfire Outfitter
Joined: Mar 2007
Posts: 9,209 |
The trick on the traditional wheel bearings for the front end is to use 88ish ford f250 front end parts. The stubs match the axle at the ujoint and the spindles out are ford. I think the rotors were dodge....I forgot.
I would not buy something that runs on any kind of primer given the possibility of primer shortages and even regulations. In fact, why not buy a flintlock? Really. Rocks aren't going away anytime soon.
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Joined: Jun 2006
Posts: 13,401
Campfire Outfitter
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Campfire Outfitter
Joined: Jun 2006
Posts: 13,401 |
Late to the party, but I'll throw in my name on the "dibs" list for the Tundra. I regret selling my 05 Sequoia with 275k on it....
“There are some who can live without wild things and some who cannot.”
ALDO LEOPOLD
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Joined: Jul 2009
Posts: 8,923
Campfire Outfitter
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Campfire Outfitter
Joined: Jul 2009
Posts: 8,923 |
Ahhh, the Holy Grail of 12Vs, the 1998 QCSB 4x4 
Dave
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Joined: Apr 2010
Posts: 148
Campfire Member
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Campfire Member
Joined: Apr 2010
Posts: 148 |
All you have to do is change out the 6 exhaust valve springs if you don't want to buy a set of 12. Yes, tiny flathead screwdriver + hit a couple locknuts + turn a couple screws = almost double the stock HP & torque on a 12v  Keep that injection pump & injectors happy with your favorite lubricity additive added to the silly ULSD fuel, or use 2% biodiesel except in deep winter.
Low speed, high drag
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Joined: Mar 2009
Posts: 7,177
Campfire Tracker
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OP
Campfire Tracker
Joined: Mar 2009
Posts: 7,177 |
Keep that injection pump & injectors happy with your favorite lubricity additive added to the silly ULSD fuel, or use 2% biodiesel except in deep winter.
I think the VP44’s benefit more from lubricity additives but I do run TCW3 2 stroke in the 12 valve. I’ll run 1/2 to 1 ounce of 2 stroke per gallon of diesel. It’s noticibly quieter I also try to run 2% biodiesel when I can find it
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Joined: Apr 2010
Posts: 148
Campfire Member
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Campfire Member
Joined: Apr 2010
Posts: 148 |
Not to mention my humble VE pumps.....
I think the VP44’s benefit more from lubricity additives but I do run TCW3 2 stroke in the 12 valve. I’ll run 1/2 to 1 ounce of 2 stroke per gallon of diesel. It’s noticibly quieter
I also try to run 2% biodiesel when I can find it
Low speed, high drag
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Joined: May 2011
Posts: 56,249
Campfire Kahuna
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Campfire Kahuna
Joined: May 2011
Posts: 56,249 |
I've got a 93 12V in a 2wd truck with 75,000 miles on it. Use it for towing a 4000 lb supply trailer (I'm a contractor). Also have a 99 24V 4x4 5 spd, 180K, used for pulling equipment, 14K excavator, Bobcat. . Good trucks.
Last edited by Fireball2; 12/26/17.
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