brogers at terrix.com
Fri Apr 4 07:32:27 PDT 2008
Plenty of people use the 7A cam(s) (exhaust I know - not sure about intake)
and make good power - IIRC dyno result show top end increases but low to mid
decreases. To convert the 7A you will want (need) a compression dropping
head gasket. Tons of info on Motorgeek.
From: 200q20v-bounces at audifans.com [mailto:200q20v-bounces at audifans.com] On
Behalf Of Bernie Benz
Sent: Thursday, April 03, 2008 5:19 PM
To: Tom Egbert
Cc: 200q20V mailing list
Subject: Re: boostin' ?s
On Apr 3, 2008, at 4:04 PM, Tom Egbert wrote:
> How is your son planning to mod the 7A's valve timing to reduce or
> eliminate the NA's valve overlap, such that the turbo can't just blow
> I am not sure, but a spare 3-b head modded for coolant flow should
> take care of that. I am more interested in my 200 20v getting 24
> pounds of boost reliably.
The 3B and AAN heads have the 4 outlet external coolant manifold. The
7A does not, just a single outlet.
Ask him to respond with his valve timing mod plans.
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