RE: Small Dia Valve Stem Heads was : How to Keep the Tourque Low

["Aaron Ness" <aaron@makuta.com>]

The small stems won't stretch more easily than stock?

Aaron
'87 528e
'82 Scirocco
'70 Beetle
'82 Kawasaki GPz550


> -----Original Message-----
> From: owner-scirocco-l@scirocco.org
> [mailto:owner-scirocco-l@scirocco.org]On Behalf Of T Berk
> Sent: Tuesday, June 19, 2001 4:07 PM
> To: scirocco-l@scirocco.org
> Subject: Small Dia Valve Stem Heads was : How to Keep the Tourque Low
>
>
> T Berk wrote:
> >
> > ... during upgrades to the engine?
> >
>
> Here is some info I gleaned from the AutoTech site; seems these 7mm
> valve stem heads are Hydro Only.
>
> Anybody know anything else about where you might source these from as
> far as donor models/years?  Audi?
>
> ======================================================
>  SportTuned SMALL STEM Zylinderkopf .......... 10.109.115K
> .......... $1195.00
>
>  This new addition to our Zylinderkopf line is designed to improve low
> rpm torque and high rpm power over ordinary performance heads.
>
>  Based on a hydraulic lifter cylinderhead, the Small Stem Zylinderkopf
> uses smaller valve stem diameters instead of increased  valve
> head size
> to maximize airflow capabilities. The smaller 7mm stems
> increase airflow
> without losing low rpm air velocity common  with larger head
> diameters.
> Because of this, the Small Stem Zylinderkopf is well suited for
> everything from stock 1.8 liter to built-up  2.1 liter bottom
> ends. Sold
> on an exchange basis.
>
>  Special SportTuned 40mm and 33mm valves run in
> silicone-bronze guides.
> Our exclusive port configuration provides optimum  airflow without
> sacrificing drivability. Our precision 3 angle valve job maximizes
> airflow while maintaining the durability expected on  a street motor.
> The street-legal AUTOTECH Sport 270° Hydro Camshaft with our
> SportTuned
> valve springs are included. This  head is hydraulic lifter only. Not
> available in a solid lifter version. Sold on an exchange basis.
> ======================================================
>
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