2017 gt350 engine failure

[Minn19]

I've never had a spun bearing in an engine, so I don't know how low, but near zero. With a spun bearing the engine will not be quiet and smooth if it's running at all, though. You can have zero oil pressure due to other causes and very little noise in a running engine. Years ago I had a 302 with a bad pan gasket leak and the ex ran it out of oil. Thing was running fine but the oil pressure was zero.

I have no idea what the chance is of a pressure relief valve getting stuck open, but obviously it's greater than zero, especially if you introduce debris into the area.

OT, but is that why she is the ex? ;)

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[mustang1]

The Whipple GT has photos as he was out of warranty and made some or all of the repair himself. Maintain the warranty and let Ford worry about this. Considering the Voodoo is an expensive engine. You might push for some sort of remedy for your difficulty and inconvenience to help improve customer satisfaction. Such as an 8/80k engine warranty upgrade.

 

[Varekai]

Right now I'm worrying about engine failure on mine, I have the BBQ tick. Messaged Ford Rep about if it's okay to use the XL17 stuff on the Voodoo but they said to bring it in, hate going to the dealer. While this isn't my video, it is 100% what mine sounds like.

[ame]

 

[Strokerswild]

Well, that's the first GT350 BBQ tick, I believe.

Interesting.

 

[Varekai]

Well, that's the first GT350 BBQ tick, I believe.

Interesting.

That's what I've been told on the Shelby owners group on Facebook, no one has heard of the tick on the voodoo, but like I said mine isn't a constant or rhythmic sound, sounds just like that, and it increases in speed with light throttle input in neutral. Over 1k rpms you don't hear it anymore, but hard to tell if you just don't hear it over the other engine noises. It's loudest by the passengers front wheel.

 

[Voodooo]

I wasnt trying to cause a heated debate. I fully understand why its a very likely suspect, but being a mechanical engineer I've seen enough cases where the smoking gun was not so smoking when the full failure analysis was done.

I honestly managed to miss the cases where owners had documented the OPG failing and was asking for someone to point me in the right direction since they seemed very familiar with the other cases. It was all burred within that 24 page thread above so it managed to slip under my radar.

I mean no disrespect to you at all. And I'm not trying to argue the fact. But the number one cause of oil pressure loss on the mod motors are the opg's. The reason why you hear so many of them on the 5.0 is for a few reasons.
1) blowers.
2) owners doing their own mods and advertising the failed gears.
3) owners talk about it, dealers / ford doesn't.

The voodoo uses the same gears different housing.

The oil pump housing is engine mounted.
The inner gear is on the crank snout.
The outer gear is centered by the housing.
At cold temps the oil is more of a solid.
At high RPM the crank snout flexes. While the oil pump housing is fixed and does not move with this flexing.
When the crank snout flexes, the crank oil pump gear moves also and changes the OPG clearance to the outer oil pump gear.
When the clearances tighten up the gears fail.
It's really easy to realize this.
I blame ford for this because all the years of opg's that failed on mod motors they should of added billet gears to the voodoo, even the 5.0 should have them if you ask me.

Even if ford did admit the opg's failed on the voodoo, you'll likely not hear about it because a handful out of 8000+ isn't considered an issue to them.
I have a good relationship with my ford dealer and it's parts department. I keep asking about the oil hose issue but still no news on when exactly when they will be available. If you ask me, I really think this is poor business on fords behalf.

 

[Hack]

OT, but is that why she is the ex? ;)

No - other reasons. Mostly my fault if I'm being honest. :headbonk:

But the 302 worked fine after adding oil back in. She actually ran it out of oil twice and then I spent the $$ (more than the pickup was worth) to fix it. I think I put another 25,000 or 30,000 miles on it and it still ran fine after I got rid of it.

 

[Hack]

I mean no disrespect to you at all. And I'm not trying to argue the fact. But the number one cause of oil pressure loss on the mod motors are the opg's. The reason why you hear so many of them on the 5.0 is for a few reasons.

Even if ford did admit the opg's failed on the voodoo, you'll likely not hear about it because a handful out of 8000+ isn't considered an issue to them.
I have a good relationship with my ford dealer and it's parts department. I keep asking about the oil hose issue but still no news on when exactly when they will be available. If you ask me, I really think this is poor business on fords behalf.

So here's the thing.. the old SBF design had a drive shaft that turned the oil pump from the bottom of the distributor. If something got into the oil pump and stopped it from turning, the drive shaft would fail. Or sometimes (even better) the cotter pin on the distributor would fail, and the engine would immediately stop running.

Now the oil pump is mounted to the crank shaft. No way is the crank going to fail, and you don't want the engineer to design the crank to fail either. So that leaves the oil pump. I can't argue that potentially there's a design flaw in the oil pump Ford put in tens or hundreds of thousands of vehicles, but I can side with an engineer designing the OPG to fail before the crank or the oil pump housing fails.

2 cents.

 

[Voodooo]

So here's the thing.. the old SBF design had a drive shaft that turned the oil pump from the bottom of the distributor. If something got into the oil pump and stopped it from turning, the drive shaft would fail. Or sometimes (even better) the cotter pin on the distributor would fail, and the engine would immediately stop running.

Now the oil pump is mounted to the crank shaft. No way is the crank going to fail, and you don't want the engineer to design the crank to fail either. So that leaves the oil pump. I can't argue that potentially there's a design flaw in the oil pump Ford put in tens or hundreds of thousands of vehicles, but I can side with an engineer designing the OPG to fail before the crank or the oil pump housing fails.

2 cents.

Correct I know the SBF / BBF oil pump design. I used the 3/8" round Chrome Moly shafts myself. I also used a solid dowel pin instead of the rolled pin. Along with a bronze gear. I also screened all the oil return holes.

No where did I say the crank is failing. I said the crank snout flexes which it does. And what you said makes no sense.
You said " I can side with an engineer designing the OPG to fail before the crank or the oil pump housing fails"

Once the OPG fails the engine is over! Including the OPG housing.
:headbonk:

They should of added billet gears.

 

[KiLLeR2001]

That's what I've been told on the Shelby owners group on Facebook, no one has heard of the tick on the voodoo, but like I said mine isn't a constant or rhythmic sound, sounds just like that, and it increases in speed with light throttle input in neutral. Over 1k rpms you don't hear it anymore, but hard to tell if you just don't hear it over the other engine noises. It's loudest by the passengers front wheel.

I know this is probably a dumb question but are you sure your sound isn't the infamous piston slap sound we all have to some degree?

 

[Varekai]

I know this is probably a dumb question but are you sure your sound isn't the infamous piston slap sound we all have to some degree?

Piston slap is more of a rattle when the engine is cold, mine doesn't start until oil temp hits 180 and it perfectly matches other examples of coyote BBQ tick.

 

[Mike02z]

(and FWIW, this actually doesn't read like a contentious thread at all once you add a certain someone to your Ignore list... ;) )

I never said the pumps were the same. The OPG is exactly the same. You're also assuming the OPG is IN the pump.

 

[Minn19]

Piston slap is more of a rattle when the engine is cold, mine doesn't start until oil temp hits 180 and it perfectly matches other examples of coyote BBQ tick.

Agreed, I've heard the piston slap noise and it is nothing compared to that video. The piston slap noise is much more subtle and doesn't happen at idle in my experience and opinion.

 

[Texas Gator]

Varekai,

I guess I'm the 2nd one with the BBQ tick. I'll have to google around and see what info there is on it. Mine had it from day 1 (4 miles). Now almost at 11k miles and it is still there from time to time. Had the master tech listen to it with the "stethoscope" and he said the heads were nice and quiet, and not to worry about it.

I also have the piston slap, and it is definitely a different sound.

EDIT: googling around - seems there are many Coyotes and some diesel F250s that have the similar noise... most dealers say it's normal, there was even a ford TSB saying it was normal for the F250....

 

[Voodooo]

What's the BBQ acronym mean

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