16v head on a 1.7L engine

[jerry.carter@shaw.ca (Jerry Carter)]

I'm not swapping blocks, I'm thinking of swapping heads. I already have a
1.7 engine, and it works fine, but I was thinking of putting on the head of
a 1.8 16v. Then eventually I'd get the block to go with the head, and I'd
then be going up displacement. but at that pont I might as well go with a
2.0, which is what I'm thinking anyway. It would be easier to cut out the
middle steps and just drop a whole new engine in there, and then deal with
the wiring, rather than update it one peice at a time.

Jerry Carter
'81 Mk1 Scirocco


----- Original Message -----
From: "Allyn" <amalventano1@home.com>
To: "Scott F. Williams" <sfwilliams@home.com>; <jester@westfailure.net>;
"Jerry Carter" <jerry.carter@shaw.ca>
Cc: "Scirocco List" <scirocco-l@scirocco.org>
Sent: Thursday, January 10, 2002 1:24 PM
Subject: Re: 16v head on a 1.7L engine


>     Umm, scott, the only reason compression goes up with 1.8 head + 2.0
> block is that the 2.0 block has less area with piston at tdc than the 1.8
> block does. The 2.0 head has more area under the valves than the 1.8. It
all
> depends on how flat the 1.7 pistons are. It may not necessarily drop it as
> far as 6 to 1. I still agree that it makes no sense to go through work of
> swapping block to go down in displacement though.
> P.S. is that your gti that shows up for like 1 second in those rally
videos?
> Al
>
>
> ----- Original Message -----
> From: "Scott F. Williams" <sfwilliams@home.com>
> To: <jester@westfailure.net>; "Jerry Carter" <jerry.carter@shaw.ca>
> Cc: "Scirocco List" <scirocco-l@scirocco.org>
> Sent: Thursday, January 10, 2002 11:32 AM
> Subject: RE: 16v head on a 1.7L engine
>
>
> > > Just slapping the head on would give you like 7 or 8:1 CR, okay for a
> > > turbo.
> >
> > If an 8v head on a 1.8l 16v block raises the CR to 14:1... then dropping
a
> > 16v head on a 1.7l will bring the CR to far lower than any 7:1. Consider
> > that the 1.7l motor starts life at around 8:1. That motor will need
> > tremendous amounts of boost to make any power. The driveability,
> > reliability, and fuel efficiency will be completely horrible. The
> > modification makes zero sense.
> > --
> > Scott F. Williams
> > NJ Scirocco nut
> > Golf GTI 16v rollycar
> > Mazda 323 GTX turbo assaulted vehicle
> > '99 Subaru Impreza 2.5 RS (coming soon)
> > ClubVAC: "Roads found. Drivers wanted."
> >
> > Check out our rally team's website!
> > http://www.usrallyteam.com
> >
> >
> >
> > _______________________________________________
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>