P7100 electronic timing .... impossible?

The one pictured is purely mechanical, I did caterpillars training program for extra credit last year and it had a section dedicate to setting the correct timing advance for that unit. It's definitely mechanical.
 
YOUNG GUNS15 said:
The one pictured is purely mechanical, I did caterpillars training program for extra credit last year and it had a section dedicate to setting the correct timing advance for that unit. It's definitely mechanical.
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yea that would have been an mui engine not eui, the eui are electronic injectors. elcetronically controlled, mechanically actuated. and if your talking about the pic that parkland posted, then no, it is electronically controlled as well.
 
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I'm only referring to the pictures I posted. That gear advance is pretty old, before cat got into the mui's. it's old school pln. I think 3406B?? Not positive on that one.
 
I dont see why a design similar to cats gear wouldnt work, might not be very cost effective to build.

Works like mechanical advance in a gasser distributer correct? Adjust spring pressure and weight to tailor advanvce? Hmmmm

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YOUNG GUNS15 said:
I'm only referring to the pictures I posted. That gear advance is pretty old, before cat got into the mui's. it's old school pln. I think 3406B?? Not positive on that one.
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3406a , b and c were very similar.

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The new big rigs are going to common rails, Detroit was the first to use an electronic unit injector. Also not seeing a common rail injector failing and taking out an engine?! What rock have you been lliving under.
 
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The mack system uses oil pressure and a p pump, you could probably use electronics to vary the pressure and control the timing but I think that's making it more complicated than it needs to be.
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YOUNG GUNS15 said:
I'm only referring to the pictures I posted. That gear advance is pretty old, before cat got into the mui's. it's old school pln. I think 3406B?? Not positive on that one.
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oh thats my bad, i thought you were talking about the injectors still
 
Lostnwalmart said:
The new big rigs are going to common rails, Detroit was the first to use an electronic unit injector. Also not seeing a common rail injector failing and taking out an engine?! What rock have you been lliving under.
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a very large one apparently. ive been working on them for years and ive only heard of a piston being burnt up once, and i wouldnt chalk that one up in the injector failure column seeing as how the kid was running multiple tuners on high while towing a gooseneck
 
dirty_max said:
a very large one apparently. ive been working on them for years and ive only heard of a piston being burnt up once, and i wouldnt chalk that one up in the injector failure column seeing as how the kid was running multiple tuners on high while towing a gooseneck
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Thats not a rock your under, it's a mountain.


It's not a ford, gm, dodge thing, it's a common rail thing.


Mechanical injectors, HEUI injectors, etc all when they were damaged would either spray in a funny pattern or drip the metered fuel dose, or fail to fire, or fire randomly...

Common rail injectors have the lovely possibility of opening up the fuel rail into the cylinder, causing metal melting EGT's and crazy high combustion pressures.

And for some reason, all these trucks have all types of fuel metering technology, yet they can't sense that that a ton of rail volume is missing.

:bang
 
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