Id say you should just back the tone ring off a little bit. I get the rattle on occasion but when I did my tone ring and tested all the Quad settings it wasn't doing it at all. Quad says it's normal when you add timing to a 3rd gen. They even tell you about it in your instructions...

 

Just a note here. To much timing is not a good thing. As the timing increases so does the combustion pressure. There is a point where it could have an effect on the longivity of the engine.

MikeyB

 

Okay...I'm all ready to do this. I filled my tank up this morning and my hand calculated mileage for my typical driving was 19.6 mpg for my last tank of fuel. I'm going to do the mod tonight and then next week before I leave town I'll top it off again and compare it to the number I got this morning. That should tell me pretty quickly if there is any improvement in fuel economy...then I'll top it off again when I return home and see how it did on the highway.

I run empty 99.9% of the time and most of my driving is city / highway with my highway driving being limited to 1-5 mile runs usually not exceeding 55-60 mph. We'll see what this mod does for me.

 

I got a code 0016( cam/crank out of sync) tonight on my way home so I am going to back it off some. I guess this might not work for me with my TST.

 

Done deal...but I don't really notice any difference in anything. I'll give it a week or two and see if it has affected my fuel mileage any.

 

Hoss.
Are you sure you went the right direction? you must be one of the few that it came through right from the factory on if you went the right way.

 

I am now. I did it once and noticed no difference. I went back and loosened the bolts to make sure I went the right direction and found that I did NOT go the right direction. So, I turned it clockwise a good 1/4" and tightened everything back up. If there is a difference, it is barely noticable.

But, you're right about one thing. When I took it off I noticed that it WAS advanced as far as it could be from the factory.

 

I installed the modified cam sensor 1K miles ago and also changed the oil and filter. I just noticed that my drivers side fender well are wet with oil, from the outside in about 6". I can not find where it is leaking but the dip stick reads on the low side. This is the first time I have ever noticed it using any oil. What is going on?

 

My mileage has gone down while running the Quad box on the 60 hp setting. I'm going to run it this week without the box and see what happens. I don't mind if the mileage stays the same but I don't want it to drop, especially with winter blend coming soon which always drops the mileage 1-2 points anyways....

 

I've been following this thread for awhile and I just wanted to add a comment:

I am new here and plan on buying a diesel, soon.

If there is that much slop in the location of the tone wheel, then no one really knows where there engine timing is before they change it.

Is there anyway to tell when the engine is at TDC?

 

Well, I had remembered seeing a picture of the rokktec modified sensor - it simply had the thick part of the sensor housing that normally has the o-ring groove in it turned off until it is flush with the small diameter of the sensor, then the screw hole slotted downward a little more to allow the sensor to be offset upward in its mount. Owning an engine lathe in my shop, I set the sensor up in the four jaw to offset it .100, the depth of the groove. After I turned it down, I used a die grinder with a carbide burr to open up the narrow end of the bolt hole, and re-installed the sensor.

I had also seen a thread on removing the balancer pulley and tone ring, and opening the dowell pin hole in the ring to allow advancing the tone ring
instead, but I couldn't get the bolts loose without the crankshaft turning, so the sensor seemed like the easier solution for me. Either way is easy, and easily returned to original. With the modified sensor, I just have to put the o-ring back on it to center it up in the holder and return to original timing.

Now - the results -

Maybe getting about 1+ to 1.5 MPG better. More noticeable than that is the truck is more "driveable". I have a 6 speed. Before, I would start to accelerate, the engine would begin to build RPM, then all of a sudden hit its power, RUSH to redline, and time to shift - LAG again, then RUSH, then SHIFT - LAG, RUSH, SHIFT - LAG, RUSH, SHIFT - With the modified timing, the power seems to be there MUCH LOWER! more gradual build up, without such an abrupt "hit" when it the turbo spools up. Granted I only have 2500 miles - this might have smoothed out later anyway - but the advance seems to have helped make it a more comfortable truck to drive.

One last note - my wife doesn't stall it as much now - may have helped off idle power noticeably.

 

How do you stall a diesel? No offense to your wife but I'm curious. With that being said, I almost stalled a 382hp cummins while in 1st gear unloaded.

 

I wouldn't think that changing the sensor could cause an oil leak.

 

To keep the crankshaft from turning all you have to do is leave your 6 speed in gear and apply the parking brake.

 

Dynocon - did you have much rattle after the mod? Wonder if it could be increasing pressures...more blow by in the crank case...pushing oil out of the vent tube which is on the drivers side of the engine. Anything that blows out of my vent seems to make it to the rear of the engine/front of the trans though.

Let us know what you find out!