H1 Written on top of piston

[ZedEx]

Recently had my Evo II motor cracked open... apparently the pistons dont look standard. They have the usual code you see on the top but have H1 next to it. Any one seen this before or know what it means?

regards,
Ant

 

[brisvr4]

Moved to Technical
Thanks from the old coot!

 

[JSTYLE]

do they have a mitsubishi logo on them ?

Jon

 

[ZedEx]

I think they did... but im not sure. Will have to check when i pick car/motor up from the mechanic. Will give more details then.

Thanks,
Ant

 

[ZedEx]

They have a mitsu logo.

Written on to of piston is:

63D T H1

 

[ZedEx]

Sorry its a **** photo but this is the top of the piston.

 

[EVO-00X]

Mitsu HYPER RVR pistons maybe?

 

[Entaran]

Hypereuetic coating? Or however you spell that?

 

[JETGSR]

they are a standard E2 piston that is the factory markings, they are a hypereutectic piston ie: H1 they are a little stronger than standard cast pistons but some companies are undecided weather they are good or bad.

I have a set in My E2

JetGSR