Timing

[torque beast]

Is there any harm in raising the timing in the 2 locations I have circled? Stock shows it peaks then falls off. I have made several to get rid of that and runs good but am fixin to start towing a lot and wonder if I should lower it back?

Stock

Modified

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[Vengeance]

No, your fine.

 

[CATDiezel]

Why are the DIPS there in the first place I wonder?

 

[torque beast]

Not sure but it is at the 1600 full throttle where it drops to the lowest. The other is part throttle high rpms


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[jcain]

Is there for a reason.

 

[torque beast]

Is there for a reason.

Would you explain? I can see the full throttle at low rpm needing less timing but why low fuel high rpm? If you would rather pm me that would be fine. Just don't want to tear anything up when I start towing heavy

 

[torque beast]

Ok. Anyone else care to explain?

 

[torque beast]

267 views and nobody can explain it?


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[torque beast]

Thanks for all the help

 

[borsky]

most likely there to keep from bending the rods

 

[pdumont01]

Or maybe to be easier on transmission?

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[torque beast]

I figure the full throttle dip is there for passing/down shifting when floored. The high rpm low fuel to me would be coasting down a hill?


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[torque beast]

I put it back like stock until I get confirmation. With peak torque numbers it looks like they hit it less than full fuel. Also peak horsepower at 2800 then falls off


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[golfer]

I figure the full throttle dip is there for passing/down shifting when floored. The high rpm low fuel to me would be coasting down a hill?


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high rpm w/ low commanded fueling would be revving it in park/neutral..or running a manually selected low gear/low range condition but not at full pedal.

 

[torque beast]

I thought about that but I will check tonight but did not think I could get those rpms at that throttle input


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[golfer]

I thought about that but I will check tonight but did not think I could get those rpms at that throttle input


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"fueling" isn't jusssst related to pedal position...since pretty much every electronically controlled diesel will have some reference to boost/MAP pressure...

you could almost certainly confirm this by monitoring injector pulse width and rail pressure at "WOT" in park/neutral...and go blast up a big hill at WOT...and compare PW and RP.

 

[torque beast]

"fueling" isn't jusssst related to pedal position...since pretty much every electronically controlled diesel will have some reference to boost/MAP pressure...

you could almost certainly confirm this by monitoring injector pulse width and rail pressure at "WOT" in park/neutral...and go blast up a big hill at WOT...and compare PW and RP.

I see what your are saying, fuel will be different depending on load


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