Originally Posted by Trav
Originally Posted by itguy08
We don't know what the issue is - could be rings, piston clearance, liner, any # of issues. It's probably cheaper for the mfg to ship a long block than have a tech replace pistons, rings, etc to maybe fix the issue. They can replace the long block and be done with it and send it to the factory where it can be machined and put back together properly.
PWTA liners are not new - they have been used on the GT-R, GT350, and other high performance vehicles. It's not new but most likely this is one of the few high volume applications. We don't know if it's a lining issue or any one of the other things that cause oil consumption.
It's interesting reading the responses and general disdain for "new and different" here. For the most part new works well. I "took that gamble" 3 times and it's worked out well. 2010 Taurus SHO (new Ecoboost 3.5 and 6F55 @ 130k runs great with minimal maintenance), 2011 F150 with the EB 3.5 (94k and runs great, only issue was the condensation and it does like plugs every 40k), and 2018 Mustang GT, while too early to tell (7500 mi) it should be fine as well. Some designs have issues but as a whole it's not the dire stuff many around here paint it as.
Lets see "new and different", first US liner less aluminum block in the Chevy Vega ...
That was quite a different design and process than the plasma spray liner used in the Ford Coyote. The Vega actually had the aluminum impregnated with high levels of silicon ... no actual physical liner layer was added to the top surface of the aluminum like in the Coyote.
Originally Posted by itguy08
We don't know what the issue is - could be rings, piston clearance, liner, any # of issues. It's probably cheaper for the mfg to ship a long block than have a tech replace pistons, rings, etc to maybe fix the issue. They can replace the long block and be done with it and send it to the factory where it can be machined and put back together properly.
PWTA liners are not new - they have been used on the GT-R, GT350, and other high performance vehicles. It's not new but most likely this is one of the few high volume applications. We don't know if it's a lining issue or any one of the other things that cause oil consumption.
It's interesting reading the responses and general disdain for "new and different" here. For the most part new works well. I "took that gamble" 3 times and it's worked out well. 2010 Taurus SHO (new Ecoboost 3.5 and 6F55 @ 130k runs great with minimal maintenance), 2011 F150 with the EB 3.5 (94k and runs great, only issue was the condensation and it does like plugs every 40k), and 2018 Mustang GT, while too early to tell (7500 mi) it should be fine as well. Some designs have issues but as a whole it's not the dire stuff many around here paint it as.
Lets see "new and different", first US liner less aluminum block in the Chevy Vega ...
That was quite a different design and process than the plasma spray liner used in the Ford Coyote. The Vega actually had the aluminum impregnated with high levels of silicon ... no actual physical liner layer was added to the top surface of the aluminum like in the Coyote.