Gen 2 Coyote, stock cams, VCTI max cam angles

[MilnerR5]

Hi,

I am across the pond in the U.K and have a Gen2 Ford Performance Coyote. The engine is completely stock but is now running a Motec M150. I have a dyno session next week, does anyone know the max inlet advance and the max exhaust retard angles? Are these angles mechanically limited by the phasers?

From my research I have concluded following, are these figures correct?


Inlet:

• Advance: 20 degrees
• Retard: 50 degrees

Exhaust:

• Advance: 50 degrees
• Retard: 0 degrees

Lock out:

• Inlet: 20 degrees BTDC
• Exhaust: 9 degrees ATDC

Many Thanks
Tom Haryett

[engineermike]

What do you mean by lockout? The neutral/deenergized/disabled state is 0,0.

[MilnerR5]

Mike,

Sorry this is not clear.

The 20 degrees BTDC and 9 degrees ATDC refer to when max lift occurs with the phaser in lockout/deenergized state.

[engineermike]

I see where you got those numbers now. I believe what that means is that’s the actual ivc and evo when the phasers are at 0/deenergized. For comparison, the 3.5 eb ivc for the phaser ranges from -50 to 0 but ivc is 21 atdc at 0. Full advance and full retard roughly line up the same as gen2/3 coyote. Gen1 and 4 are more like ecoboost. Gen2/3 are more like gt500.

I took apart a gen3 exhaust phaser and believe what you are asking is correct or very close to it. There might be another 5 deg wiggle room but the mechanical stops are very close to the numbers you posted if not dead on.

[MilnerR5]

Is there any chance of piston to valve contact with standard Gen2 cams and phasers? Can I move the phaser all the way to there mechanical stops when on the dyno?

[engineermike]

I’m nearly certain the mechanical stops won’t allow pv interference. But don’t risk your motor on my word…

[MilnerR5]

That is the $8000 question.

I was hoping someone would have logged what advance / retard the Ford control module puts into the cams on a run.

[engineermike]

I have a file from a gen2 ford control pack (if that’s what you’re referring to), but it’s in .tec format.

[B E N]

Here is a stock gen 2 control pack:
Gen 2 coyote control pack.hpt

[MilnerR5]

Here is a stock gen 2 control pack:
Gen 2 coyote control pack.hpt

Thanks Ben

[MilnerR5]

Inlet:

Max advance: 20 degrees
Max retard: 50 degrees

Exhaust:

Max advance: 0 degrees
Max retard: 50 degrees


I believe the cam timing events are as follows (I had the exhaust advance/retard the wrong way around in my first post)

I would still appreciate some confirmation if anyone knows

[engineermike]

Your first post was correct.

[MilnerR5]

Everywhere else I have found shows the exhaust cam only ever retarding and never advancing?

[engineermike]

In the exhaust cam, 0 is fully advanced and 50 is fully retarded.