What is the difference between a JDM piston and a US 7MGTE? I would like to know if there is a difference that will affect emission or anything of that sort. Thank you.
What about ceramic coated crowns? My us 7mgte had uncoated piston crowns and my current jp 7mgte has coated crowns. The jp 7m is an 89+ so maybe it's a year based thing....
...in any case that difference won't be noticeable and won't affect emissions.
THE PISTONS ARE THE SAME ,SOME OF THE TURBO MOTORS GOT THE COATING.FROM MY RESEARCH I FOUND THAT THE COATING WAS NOT TO GOOD OF A JOB BY TOYOTA,REPORTED TO BEGIN FLAKING UNDER XTREME LOADS
I would like to know about the detail of the coating by years and engine model. Originally I thought that all of the toyota internals exposed to extreme heat are ceramic coating... i'm very disappointed about the things that I have read. more details please! thank you!!!