Mustang 350's "Plasma Transferred Wire Arc"

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WINDSOR, ON, Canada – Much has been written about the wonders of the flat-plane crankshaft in the ’16 Ford Shelby GT350R and GT350 Mustang engines, but the real heroes behind the high-revving 5.2L V-8 are the production engineers at Ford’s Essex Engine Plant here.

After all, without the Plasma Transferred Wire Arc process – PTWA for short – there wouldn’t be an additional 0.2L of displacement in the new V-8, which allows for larger intake and exhaust valves, all of which play a big part in producing 526 hp and 429 lb.-ft. (582 Nm) of torque from the naturally aspirated engine.

...

How PTWA Works

Using PTWA, Ford replaces typically heavier iron cylinder sleeves with a thin coating of iron/iron-oxide material that is atomized and sprayed on the cylinder walls by a hydrogen-argon gas-plasma arc-welding torch spinning at 400 rpm as it is robotically guided into each cylinder, explains Tim Beyer, technical specialist-global advanced manufacturing engineering.

The welder, fed by a continuous strand of 0.0625-in. (1.5-mm) iron wire delivered at a rate of 252 ft. (77 m) per minute, applies the coating in several layers in about 2 minutes per bore, Beyer says.

After the material is applied, it is allowed to cool and then is machined and honed to a finished thickness as thin as 0.004 in. (0.10 mm), compared to 0.08 in. (2 mm) required for an iron cylinder insert.
 
Yep, a variation in the nikasil etc. line up. looks like a much more precise deposition and finishing process.

This engine is a little monster, I am currently negotiating for some seat time! The new Stang is by far the best looking one ever IMO...
 
Originally Posted By: SteveSRT8
Yep, a variation in the nikasil etc. line up. looks like a much more precise deposition and finishing process.

This engine is a little monster, I am currently negotiating for some seat time! The new Stang is by far the best looking one ever IMO...
Yeah when the new mustang body style first came out I wondered but now they have grown on me and look great.
 
Originally Posted By: SteveSRT8
The new Stang is by far the best looking one ever IMO...


AGREED!

...and that engine is a screaming MARVEL
thumbsup2.gif


I just hope that the Tremec 3160 gearbox is better/stronger than the Sino built Getrags they put in everything else NA Mustang.

Hopefully, it does NOT give up much strength to (and has an even better 'action/feel' than) the TR6060 it saves ~25 lbs. over.
wink.gif
 
Originally Posted By: dailydriver
Originally Posted By: SteveSRT8
The new Stang is by far the best looking one ever IMO...


AGREED!

...and that engine is a screaming MARVEL
thumbsup2.gif


I just hope that the Tremec 3160 gearbox is better/stronger than the Sino built Getrags they put in everything else NA Mustang.

Hopefully, it does NOT give up much strength to (and has an even better 'action/feel' than) the TR6060 it saves ~25 lbs. over.
wink.gif



Haven't heard much negative press on it either. I think Ford wants their Halo version to be bulletproof. Ford can easily tweak the pcm to torque limit the engine at certain shift points.

And, with no offense intended to Stang devotees, they are becoming quite common in my area. Good value is selling well of course...
 
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