Re: 16v valve sizes

[Nigel Heron <scirocco@psycode.com>]

Nigel Heron wrote:

>
> it seems to me that when the 16v became a tall block (late 9A and ABF),
> vw shrank the exhaust valves from 98.2mm to 97.95mm but also shrank the
> valve stems from 38mm to 35mm for all the valves.
>

sorry, i meant the height of the valve *guides* went from 38 to 35mm
..and what i'm wondering is, did they change the valve stem diameter or the
guide diameter to improve flow in the head head?

-nigel.


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