What makes a 2 liter [16v]?

[6keb1@qlink.queensu.ca (Kareem)]

Dan, we were responding to a 16v question. By squish area
I'm referring to the part of the combustion chamber that
resides in the piston top when it is a top dead centre.
The 2L piston provides a smaller squish area than the 1.8L
piston and this results in a compression increase when a 2L
block is used underneath the 1.8 head.

Kareem

On Wed, 10 Apr 2002, Dan Bubb wrote:

> 1st. Are you guys talking about an 8V or 16V. If it's an 8V then the
> compression doesn't change by sticking a 2.0L block under a 1.8 head.
> 2nd. The comment about squish area doesn't make any sense. Please define
> squish area so we all know what you think you're talking about.
> Dan
>
> Kareem wrote:
> >
> > To spell it all out: as Al said, there is a difference in both bore and
> > stroke, but the difference in bore is small enough such that the
> > combustion chamber in the head of the 1.8 will also match up to the 2.0
> > block and work very effectively. Of course, the oil and coolant
> > passages match perfectly.. As to the compression ratios of the 2.0 block
> > w/ 1.8 head  I think it's around 10.8:1   - the increase over the 10:1 of
> > the 1.8L engine being due mostly because of the reduced
> > squish area of the 2L pistons. HTH.
> >
> > On Tue, 9 Apr 2002, Allyn wrote:
> >
> > > difference is in both bore (82.5 vs. 81 mm), and in stroke (92.8 vs. 86.4).
> > > Al
> > >
> > > Allyn Malventano, ETC(SS), USN
> > > 87 Rieger GTO Scirocco 16v (daily driver, 170k, rocco #6)
> > > 86 Kamei Twin 16V Turbo Scirocco GTX ('it has begun', rocco #7)
> > > 87 Jetta 8v Wolfsburg 2dr (daily driver, 260k, 0 rattles, original clutch, driveshafts, wheels :)
> > >
> > > ----- Original Message -----
> > > From: "Aireq" <trance_whore@yahoo.com>
> > > To: "John C. Worden" <scirocco@powerlink.net>; <aireq@u.washington.edu>; "Scirocco Mailing List"
> > > <scirocco-l@scirocco.org>
> > > Sent: Tuesday, April 09, 2002 8:56 PM
> > > Subject: RE: What makes a 2 liter?
> > >
> > >
> > > > Isn't the 1.8 or 2.0 the displacement of the engine? I think i'm confused
> > > > but I would think the only way you could increase the displacement of an
> > > > engine would be to increase the diameter of the piston, or increase the
> > > > lenght of travel of the pistion. What is different about the 2.0l blocks
> > > > from the 1.8l blocks?
> > > >
> > > >
> > > > aireq
> > > >
> > > > -----Original Message-----
> > > > From: John C. Worden [mailto:scirocco@powerlink.net]
> > > > Sent: Tuesday, April 09, 2002 2:11 PM
> > > > To: aireq@u.washington.edu
> > > > Subject: RE: What makes a 2 liter?
> > > >
> > > >
> > > > At 07:54 AM 4/9/02 -0700, you wrote:
> > > >
> > > > >All you need to change is the block? No pistons or crack shaft or anything
> > > > >like that? What differentiates between a 1.8l head and a 2.0 l???
> > > > >
> > > > >
> > > > >aireq
> > > > The easiest way to make a 2.0 is to get a block out of a 90-92 GTI/GLI or
> > > > a 16V Passat.  The old way was to bore and stroke it which involved new
> > > > pistons, crankshaft and sometimes rods, not to mention machine work.
> > > > So much easier and cheaper today.  And if you can't find one if your area
> > > > for a good price I did a quick search for one at http://car-part.com/ and
> > > > came up
> > > > with a few hits, pretty well priced too.  Just don't know if they'd ship.
> > > > Good luck.
> > > >
> > > >
> > > > John C. Worden
> > > > Bucksport, Maine
> > > >
> > > > '98 Dakota 4x4-Just rolled 100K
> > > > '86 Scirocco 8V-
> > > > '81 Scirocco 2.0 16V -
> > > > '78 Scirocco Brazil Brown Metallic,  4 speed.
> > > >
> > > >
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