2017 gt350 engine failure

[Cobra Jet]

Why is it always the OPG !??

Why can't Ford produce one that's a quality piece of equipment ? Even if you were born yesterday, you know that the thing is always a weak link in the chain. Why the hell is that.

Ford doesn't "produce" the OPG or many other components - Ford outsources contracts and certain Vendors bid to win the Contract to manufacture the parts to Ford's specs based on X-Y-Z. Usually "lowest bid wins" or if the Vendor is a historic partner to Ford they get selected via an internal process.

If the part failure is the OPG (and if it's already billet) then:
A) Something could have gone wrong with the manufacturing process OR the materials being used; if that is the problem, then the Vendor should be looking into quality control aspects and inspections of completed part runs.
B) Incorrect tolerances, incorrect torque specifications or poor installation techniques used during engine build process.

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[DrumReaper]

The pictures of the failed OPG come from a guy whose GT failed. The OPG shown isn't a GT350 OPG.

My bad. Saw that just now. Thanks.

 

[Voodooo]

Rpm, flex, Vibrations, harmonics and pressure are what's causing the failed voodoo opg's. Same thing that causes the failures on the 5.0. Especially when a belt driven blower is added to the cranks snout.
Any metal that has a sharp, non radius edge is a rate of failure. The OPG is a total disaster waiting to happen. It's just a matter of time. It's full of sharp edges.
Another problem with high rpm and or belt driven blowers, they cause the crank snout to flex. When the crank is spinning and going through it's 4 cycle process, the crank snout flex will change the OPG clearance. The oil pump is mounted to the cylinder block, the outside gear is centered by the oil pump housing, the inner gear is mounted to the crank. When the snout flexes, this clearance between the two gears also change. When the clearance becomes to tight its metal on metal contact. Also don't forget about thermal expansion and contraction. The out side gear will change dimension faster then the inner gear. Also, cold thick oil is more of a solid. This solid becomes an issue within the OPG clearance.

 

[Stage_3]

I am going to try my best to find out exactly what went wrong through ford, I'm also concerned because I read about another replacement which ended in cylinder misfire and multiple return trips to dealer. At this point service advisor has contacted ford and waiting on a response for replacement and rental car coverage. Thankfully I have a 2016 370z nismo, coincidentally I'm in the final stages of lemon lawing the nismo because of a host of issues ranging from hatch failing to open after 7 trips to dealer to unacceptable vibrations coming from shifter. I had to hire an attorney for the nissan. Statistically I am the definition of an outlier!!

That sucks about the engine. I hope it all goes well with the replacement.
Good luck!
So, can you explain something to me? The dealerships techs just took the car in and said,....you need a new engine, we'll call Ford??? Didn't they even look at the engine apart or just assumed it was not good? Surely they must know what is wrong with the car to have Ford officials come and okay a replacement engine?

 

[krt22]

Correct. A GT owner just shown a pic of his failed OPG as an example. It's not a gt350. But gt350 opg's are also made from the same material as 5.0.

But do you know if the design is the same?

Do we have any 100% confirmed GT350s with failed OPGs?

 

[Voodooo]

But do you know if the design is the same?

Do we have any 100% confirmed GT350s with failed OPGs?

The gears are the same. Housing is different.

 

[krt22]

First you said its the same material, but you are positive its the same exact part?

And still no confirmed failures?

 

[Voodooo]

First you said its the same material, but you are positive its the same exact part?

And still no confirmed failures?

I'm not saying it's the same material. I'm saying it's the same dimension. A 5.0 gear can be used. I highly doubt they used different material. This is not the first failed OPG

 

[Voodooo]

First you said its the same material, but you are positive its the same exact part?

And still no confirmed failures?

I also never said the material is the same. I could if I had a 5.2 gear and 5.0 gear. I could spark test them. That would determine if the material is the same.

 

[Stage_3]

This is not the first failed OPG

So, this is another confirmed OPG failure? OP did not state in any of the posts, unless I missed it.

 

[krt22]

The same exterior dimensions doesnt mean anything without verifying the actual part and its fabrication process. And changing the housing can have an impact as well, if its larger then the internal pressures can be reduced and increase the SF for the gears themselves

And I quoted you, you clearly stated they are made from the same material. I'm not making anything up, just going by what you've posted already

Lots of folks keep saying that multiple people have had this failure, still I ask, who here has a confirmed failed OPG in their GT350? So far we have 6 pages of speculation

 

[mustang1]

First you said its the same material, but you are positive its the same exact part?

And still no confirmed failures?

I think its the same part. MMR advertises this:

2011 - 2017 5.0 Mustang GT Coyote MMR Billet Oil Pump gears
Starting at: $319.99
Simply the finest Billet Gears available for your engine, made from Premium US 9310 Billet Steel,

Fits:
2011-2017 Mustang GT
2016+ GT350

 

[krt22]

Very possible, my only point is you can have 2 parts, nearly identical in dimension, be completely interchangeable, yet different.

 

[HizliBullet]

sounds like the same problem with oil pump as mine

 

[Voodooo]

The same exterior dimensions doesnt mean anything without verifying the actual part and its fabrication process. And changing the housing can have an impact as well, if its larger then the internal pressures can be reduced and increase the SF for the gears themselves

And I quoted you, you clearly stated they are made from the same material. I'm not making anything up, just going by what you've posted already

Lots of folks keep saying that multiple people have had this failure, still I ask, who here has a confirmed failed OPG in their GT350? So far we have 6 pages of speculation

The gears made by and used by the vendors are the same as 5.0 gears. When you buy gears you reuse your housing unless of course you purchase a new housing. No body makes a blue printed 5.2 oil pump gears and housing assembly.
I know how a oil pump works. Bearing clearance, lifter clearance, rod clearance etc all control oil pressure.

Do some research my friend, this isn't the only 5.2 with oil pressure loss. Others have already confirmed failed opg's.

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