On 05/07/2012 03:49 PM, P.J.Berg wrote:
...
> The valve lash is specified to 0.10mm intake and 0.15mm exhaust on the
> later engines, so your intakes are adjusted correctly, I have run 0.10mm
> on the exhaust also but that is cutting it very close, I used to loose
> compression after extended periods at WOT, as in very difficult to
> restart whilst still warm.
>
> You are either experiencing valve stretch or seat sinking. In theory it
> can also be seat corrosion from unleaded fuel if the material is not
> right, quite uncommon these days though..


The heads aren't new, but refurb'd back in February with a three-angle.
They had about a year (10K miles) prior. I was thinking stretch or
seat sink a few months ago, but it's still going on.

Could be material..

Are Auto Linea GO1 heads known for this?


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