How much can I machine of a Toyota V6 3VZ-E head ?

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Darryl Tunesi - 30 Sep 2005 15:46 GMT

Hi

I've just taken the heads off my 4-runner 3VZ-E engine due a blown head
gasket. Both head gaskets have a failure at the same place which has
also caused some corrosion on the aluminium head between the coolant
passage and cylinder #1 (and #6 respectively).
80% of the damage has been removed by a 5 thou skim but I would like to
remove the rest of the corrosion if possible (which would probably need
15 thou in total)
What is the limit that I can go to for this engine??

Any help greatly appreciated

Darryl Tunesi

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Shep - 30 Sep 2005 20:24 GMT

I believe .010 is the max, most machine shops should have these specs.

> Hi
>
[quoted text clipped - 10 lines]
>
> Darryl Tunesi

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Ryan Underwood - 01 Oct 2005 01:25 GMT

>Hi

>I've just taken the heads off my 4-runner 3VZ-E engine due a blown head
>gasket. Both head gaskets have a failure at the same place which has
[quoted text clipped - 4 lines]
> 15 thou in total)
>What is the limit that I can go to for this engine??

If you don't have to use the OEM gasket for any particular reason, you can get
'shim' gaskets (see http://www.headgasket.com/ for example). They are designed
to compensate for excessive head milling when it becomes necessary.

PS: Check your block decks for true too before putting it back together.

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