The true reason unveild behind Gen3 coyote tick. According to MPR racing engines

[pro 5.0]

The sad part is all replacement engines were slated for 2019 production, and those replacement engines are having the same issues. Supposedly Ford admitted they had a bad run of engines which may be true, but it would appear that they made so many they have no clue which ones were affected.

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[Anthony 05 GT]

If this is indeed the cause I would imagine Ford decision makers may have at least for a while decided to absorb the more than a few actual bad engines. The sad thing is they would also have to implement the ''That's a normal noise'' answer to all the complaints that the service desk. I consider this a problem based on mass production cost cutting measures.

The outfit that previously handled the spray in liners for the GT500 and GT350 probably couldn't take on the large volume of work for a mass production engine so it was done on the cheap. Just speculation on my part.

 

[pro 5.0]

Ford claimed that they do the PTWA in house to provide better quality control. More lies.

 

[pro 5.0]

I can't wait to see what issues the new GT500 will have.

 

[Anthony 05 GT]

My guess is the GT500 engines will be hand built with quality control measures well above the mass produced engines.

 

[pro 5.0]

The Shelby engines are assembled by a 2 person team on the NICHE line, but let's not forget the GT 350 engine is built on that same line and they are having issues. Only time will tell I only need to concern myself with the Coyote issues as the GT 500 is out of reach for me.

 

[Anthony 05 GT]

All engines have a share of problems. The 3rd gen 5.0 it seems just has a few more and they apparently are willing to absorb this problem. The engineers are probably climbing up the walls trying to come up with a solution with the money guys shooting down most of their remedies.

 

[pro 5.0]

I understand there can be issues it just sucks that a consumer buys a 50k car and has to be the test mule.

 

[Anthony 05 GT]

Yeah, I agree. I guess it's just one of those things.

 

[Zinc03svt]

Allowing water and oil temps to get into operating ranges is so much more critical on a motor capable of 7500 rpms. Jumping in cold car and going into the higher rpms to soon can be very detrimental to engine longevity. I bet quite a few people miss this pretty important (especially DOHC) step of owning a performance oriented engine.

 

[Dusten]

The 2 main reasons for the PTWA spray in liner was to save 6 lbs of weight (BIG DEAL) and to increase the bore to 93 mm to make it a true 5.0. I'm sure cost savings played a part as well, I said it before this video even came out that Ford needs to go back to the steel liners in the gen 3 blocks.

If ptwa is the issue why dont other ptwa engines exhibit the problem?

 

[Anthony 05 GT]

Not mass produced, hand built with closer attention to detail. A different facility is doing the process too. That's my guess.

 

[pro 5.0]

If ptwa is the issue why dont other ptwa engines exhibit the problem?

It's not the fault of the PTWA lining it's a machining issue, Livernois has short blocks for sale that use the factory block with new forged piston's and rods. I asked them if they torque plate hone the blocks and they said yes, I then asked how much material was removed to make the bore true and the answer was .001 - .003. The lining itself is only .006 thick so after a hone to true the bore it's now .003 too thin for my liking.

 

[Dusten]

It's not the fault of the PTWA lining it's a machining issue, Livernois has short blocks for sale that use the factory block with new forged piston's and rods. I asked them if they torque plate hone the blocks and they said yes, I then asked how much material was removed to make the bore true and the answer was .001 - .003. The lining itself is only .006 thick so after a hone to true the bore it's now .003 too thin for my liking.

Then steel liners aren't the fix. Tighter machining tolerances would be

 

[pro 5.0]

Going back to steel liners would eliminate the need for such a tight PTW clearance when cold, you could run .002 - .003 as the bore won't grow as much with the steel sleeve in there.

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