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Grid on the piston


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Jocky
New User

Mar 16, 2011, 12:57 AM

Post #1 of 3 (2263 views)
Grid on the piston Sign In

I found there are some cross marks on a Nissan VQ V6 engine piston.



As shown above, there are some grid on the piston shirt.
Are those marks are designed for a specific purpose or just exist due to their manufacturing process?

Thanks.


re-tired
Veteran / Moderator
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Mar 16, 2011, 3:29 AM

Post #2 of 3 (2259 views)
Re: Grid on the piston Sign In

Pistons from various mfg have this . I understand they are to relieve surface tension which helps prevent the proliferation of cracks.


LIFE'S SHORT GO FISH


Tom Greenleaf
Ultimate Carjunky / Moderator
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Mar 17, 2011, 12:45 AM

Post #3 of 3 (2249 views)
Re: Grid on the piston Sign In

Add: If you need pistons engine is junk,

T







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