JE's Perfect Skirt coating - thoughts?

doublespaces

Administrator
Oct 18, 2016
9,249
4,259
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AZ
Ride
2009 E93 335i
What do you guys think about this?


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First Perfect Skirt Applications
  • Subaru EJ20, EJ25, FA20
  • Mitsubishi 4G63
  • Nissan VR38DETT
  • Toyota 2JZ-GTE
  • Chevrolet Gen IV LS and Gen V LT
  • Volkswagen/Audi 1.8T and 2.0T TSI/TFSI
  • Modular Ford (4.6L, 5.4L and Coyote)

http://blog.jepistons.com/jes-patented-perfect-skirt-coating-is-a-breakthrough-in-piston-technology
 

dyezak

Major
May 4, 2017
1,768
1,516
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Plano TX
Ride
335is
Piston Slap (as we called it) was a huge problem on my built 4g63 with JE pistons. Made the knock sensor basically useless. Was especially bad on a cold engine. It will be interesting to see independent tests on this.