I Have a 1996 12v I was thinking about bumping the timing up on it. Far as I know the truck is all stock.. Someone slide the fuel plate so I don't know to much about it. But I was reading around some people told me to do it a couple of degrees and others told me to 16 to 20 degrees, What should I do? Some one told me to even get a marie head gasket for it. Would like some info. -

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If youre fuel plate is slid you should have a pyrometer and boost gauge at the very minimum.

Yes, the factory injector pump timing tends to slip from the factory setting. You should be bumping the timing to 16 or 17 degrees max. Yes, some guys go for more....but it wont make your truck run better and you we be risking a head gasket replacement.

Do you know about the Killer Dowel Pin (KDP) Issue? - If not, read up on it. If you are bumping the timing its a very good "time" to take care of the dowel pin. -

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I got a Pyrometer and a boost gauge in it even a temp gauge for my trans. so what is the killer dowel pin? -

The Killer Dowel pin is a pin that is used to locate the timing case on the front of the engine and prevent the case from woalking around. The pin somehow was undersized from the factory and can work its way out. The results range from fairly minor to almost catastrophic (thousands of repair $).

There are two fixes.

1) the jig method - which involves renting or borrowing a special jig and then drilling the timing case and installing a set screw.

2) the Tab method (the preferred method) - which involves pulling the front of the timing case off the engine and installing a tab over top of the pin so that it cant work it way out.



http://www.dodgeram.org/tech/dsl/Dowel_Pin/bolt.htm

http://www.dodgeram.org/tech/dsl/Dowel_Pin/tab.htm

Also here: http://www.dieselbombers.com/cummins...d-the-fix.html -

ok Thanks. Now advancing the timing on my truck will it run a little better. I think right now its getting to much fuel and I really new more air. -

Yes, advancing the timing should make it run better - but dont expect a big jump in performance. You should gain a little bit of mileage.


Why do you think its getting too much fuel? Does it have the stock fuel plate or something else? -

I have not idea i bought the truck like that. Don't know to much about it so I would like to learn how to. Some one told me that the fuel plate was turn down but i don't think so because it rolls the coal -

ok....the black smoke could be from the plate being slid, it also could be from a different fuel plate. Also, a cut or leak in one of the 4 intercooler boots will cause black smoke. Many people go ahead and replace these boots with heavy duty one as well as HD clamps.

But you are essentially right - too much fuel or not enough air - or both. -

Ok thanks it just doggie when i take off if you know what i mean oh yeah and i for got about the lock up switch i have to -

i noticed a difference when i bumped my timing to 18.5* in the milage and with it bogging in 5th gear. when i was in fifth gear at 40mph the truck would hop in the rear but afetr i bumped it i get all the way down to 30mph in fifth gear and it still dont jump just pores the black smoke -

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94 dodge ram 2500 Cummins 12v, regular cab long box, nv4500 ,E/F shift handle w 2low and pacbreak switch, Dual 5" bullhauler stacks, dt profab track bar, Industrial injection 370HP stage 3 injectors, #5 fuel plate, 4000 GSK, HTT holset 35/40 hybrid with a 16cm non gated housing, ported exhaust,o-ringed head, ARP 12mm studs, pacbrake exhaust brake,60 lb valve springs,custom 191 dv's, timing at 18.5*,13" ceramic valair 6sp clutch, AFE intake, Pyro,boost,Tranns temp,,

Wel that whats i'm talkin about mines and automatic though but i'm thinking about going to the marines so.... I might sell it or even wait till i get back and fix it up.. I would like to do alot of stuff to it.. -

Bumping the timing will get you better performance up top and have an added benefit with say a 3k, 4k, or 5k GSK setup. -

if it rolls the coal it could be due to a different fuel plate, a badly tuned afc, no fuel plate at all, .. how much boost are you running and what do the egts look like? -

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