RE: '85 GTI motor

[Brian Honnold <bhonnold@pac-cap.com>]

The high compression accounts for some of the gain. The GTI also has the 
big valve head, larger throttle body and larger intake runners.  In 1986 VW 
changed the timing map of the knock sensor ignition to give it another 3 
HP.

As a side bar, the engine management system on the 85 & 86 GTI is CIS-E 
which unlike motronic is separate from the ignition control system



Brian Honnold
'78 Rocco Ragtop

On Thursday, January 21, 1999 11:32 PM, David Ruby [SMTP:dbruby@ainet.com] 
wrote:
> Motronic engine management with knock sensor is responsible for this 
gain,
> right Brian H.?
>
> Dave
> '86 8v

> From: Jorel Jackson <kondor77@hotmail.com>
> To: scirocco-l@scirocco.org <scirocco-l@scirocco.org>
> Date: Thursday, January 21, 1999 9:04 PM
> Subject: '85 GTI motor
>
>
> >I've noticed that the '85 Scirocco motor has identical characteristics
> >to the '85 GTI motor save in one category, compression. This results in
> >ten additional hp, which would be nice to have. Why is this? Is it
> >because of dished cylinders, or is it just because of different heads?
> >
> >JS Jackson '85 scirocco
> >
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