Its not looking good boys...

[Donovan]

We did. My bad gents, its in the other thread.

 

[smurfslayer]

In all the time we’ve spent yanking @Donovan’s chain I have to confess I may not be current

- got got a replacement motor - long block?
now sourcing turbos and hoping we have don’t end up with 2x same side turbos
What do you think the ETA is?
Are you going to go a bit more conservative on the tune?

 

[Donovan]

It was quite the road. lol. Better than 11,000 at Ford.

ETA on everything being done is still probably third week of July.

 

[1BAD454SSv2]

See didnt need to see anything, i've never seen a crank do that on a non tuned ecoboost

Saw it here in Arizona on club members no tune stock 2019 , while towing broke in same place . I heard of several other with broken cranks exactly like that as well .

 

[Donovan]

I wonder what his mileage was?

For this next engine, I guess to help keep it as long as I can, I will religiously do oil changes at every 7500.

 

[Muchmore]

I wonder what his mileage was?

For this next engine, I guess to help keep it as long as I can, I will religiously do oil changes at every 7500.

Sooner. Not worth the money savings.

 

[nikhsub1]

Yeah I do mine every 5k. But I only drive 8k miles per year or so...

 

[TwizzleStix]

That broken crank looks suspiciously like it had a “bad” harmonic balancer on the nose. That failure wasn’t sudden, it developed from a crack caused by vibration and/or a flaw in the forging. I’ve seen bad machine work cause it as well. If the radius junctions at rod/main bearing journals are not perfect it sets up a stress point that will result in crack/fail just like in the photo. I had a crank fail similarly back in the day with my 6-cyl Chevy turning 8k rpm(?). Anyway, that’s not a “tune” problem. Edit: unless it was consistently over revving.

 

[Donovan]

I can confirm, no over revving. Good info to know. I am still not happy about it. This ecoboost has had its fair share of mishaps.

 

[nikhsub1]

That broken crank looks suspiciously like it had a “bad” harmonic balancer on the nose. That failure wasn’t sudden, it developed from a crack caused by vibration and/or a flaw in the forging. I’ve seen bad machine work cause it as well. If the radius junctions at rod/main bearing journals are not perfect it sets up a stress point that will result in crack/fail just like in the photo. I had a crank fail similarly back in the day with my 6-cyl Chevy turning 8k rpm(?). Anyway, that’s not a “tune” problem. Edit: unless it was consistently over revving.

Our cranks are forged?