Re: Performance head question

["Curt Voss" <curtv@eudoramail.com>]

On Wed, 5 Sep 2001 11:50:00    Mash wrote:
>--- Curt Voss <curtv@eudoramail.com> wrote:
>> A while back I picked up a ported & polished
>> big-valve (40mm/35mm)
>
>A normal big valve head has 40/33 valves.

The guy I bought it from told me it's 40/35, he may have been wrong.

>
> head with a G-grind cam and
>> adjustable sprocket. It's been gathering dust in the
>> shed, but now I have a lifter clattering I'm
>> thinking this might be a good time to swap it on.
>> Hopefully I'll also be putting on an Audi 5000
>> throttle body with the intake manifold ported to
>> match. It's going onto an '82 Scirocco which
>> currently has a 1.8L 8V with a K&N air filter and
>> mild exhaust (Techtonics downpipe/cat/2" cat-back
>> pipes/Porsche 944 muffler), everything else (motor,
>> CIS, ignition, etc.) is stock.
>
>1.8 is not stock for an '82 - exactly what motor is
>it?
>(1715 cc is stock)

Sorry, I guess that was misleading... it's an unmodified 1.8 out of a later-model Golf.

>> 
>> So my question is... how will this head affect my
>> gas mileage and how much will it hurt my low-end
>> performance?
>
>I assume you have a 1.8 with the big head valve (JH?),
>if so a properly ported head would I GUESS be the same
>or better mileage.
>

Well, I hope to find this weekend, he says with a huge grin of anticipation... :D

>
>
>=====
>Mark Peele
>1985 Scirocco, 1982 Scirocco, 1981 Scirocco, 1978 Scirocco, 1987 Golf GT
>http://www.scirocco2.de/mark.htm
>Direct Mail: SCIROCCO_GTX@YAHOO.COM
>Need parts? try http://www.parts4vws.com/ (Potterman)
>or http://www.germanautoparts.com/ (Adirondack)
>
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