Compression question

[txrocco@sbcglobal.net (Patrick Bureau)]

you think rick ?

Brian you old fart... speak hum.. Hum wait.. put your
teeth in you gumshoe.

is that proof enough ?

chuckling (gawd I am going to pay for the old-man joke
now...) 

--- Rick Alexander <ralexander03@snet.net> wrote:
> Wait a minute please. There is something you
> obviously do not appreciate. These two guys are
> practically neighbors and tease the snot out of each
> other all the time. I'm dead positive that this is
> only rib poking.
> 
> Rick Alexander
>   ----- Original Message ----- 
>   From: worldcyclist 
>   To: Brian Wagner 
>   Cc: Patrick Bureau ; scirocco-l@scirocco.org ;
> scourge@cogeco.ca 
>   Sent: Wednesday, May 07, 2003 8:16 PM
>   Subject: Re: Compression question
> 
> 
>   Just to be clear: compression ratio is the
> displacement difference between cyclinder swept
> volume VS the head's volume. It is not based from
> atmospheric pressures. 
>   Another point: 
>   I don't see any reason to poke fun at people. If
> someone has something to add, that is great, but
> "ribbing" is not very polite, especially when it
> comes to insulting one's intelligence. I think we
> were all tought (or should have been) that if you
> don't have anything good to say then don't. 
> 
>   I'd rather not get pointless emails in my inbox of
> that nature...... 
> 
>   Gary 
> 
>   Brian Wagner wrote: 
> 
>     Wow he is scary smart. LOL 
>     Patrick Bureau <txrocco@sbcglobal.net> wrote: 
> 
>       I dont think you calculate piston compression
> and 
>       compression reatio that way.. 
>       My 8v 1.8: stck ran 160 PSI on all four
> pistons 
>       (bentley tells 145-174 average for new engine)
> but it 
>       still only 8.5:1 compression ratio. (ie: 8.5
> times the 
>       weight of earth's atmostphere (which is the
> base 
>       xx:1). 
> 
>       VW engines which came stock in a Scirocco, or
> are a 
>       popular replacement 
>       Typical Name & Code Bore (mm) Stroke (mm) Year
> / Model 
>       available HP@RPM / TQ@RPM CR 
> 
>       1.8L JH 8v 81 86.4 83-89 90@5500 / 100@3000
> 8.5:1 
>       1.8L GX 8v 81 86.4 Fox 85@5250 / 96@3000 8.5:1
> 
>       1.8L PL 16v 81 86.4 86.5-92 Scirocco (88 USA,
> 89 
>       Canada, 92 Europe) 123@5800 / 120@4250 10:1 
>       2.0L 9A 16v 82.5 92.8 90 - 92 Passats / Golfs
> / Jettas 
>       134@5800 / 133@4400 10.8:1 
>       2.0L ABA 8v 82.5 92.8 93-98 Golf / Jetta /
> Cabrio 
>       115@5250 / 122@3250 10.5:1 
> 
>       Note that all the engines up to the first 1.8L
> have 
>       136mm rods, while the later motors have 144mm
> rods 
> 
>       look it up on the net.. my numbers are pretty
> close to 
>       what it is all about. 
>         
> 
>       --- worldcyclist wrote: 
>       > I've got some firsthand experience that
> might be 
>       > helpful. 
>       > My 1.8 16V with stock cam timing gave 150psi
> doing a 
>       > compression test. 
>       > With the cam advanced 8* it was 175psi.
> Otherwise 
>       > it's 10-1 in terms of 
>       > ratios. 
>       > The JH engine I had was 135psi or 8.5-1. 
>       > The Alfa with 9.5-1 gives me 173 psi with
> stock cams 
>       > and timing. 
>       > 
>       > An interesting site is www.smokemup.com 
>       > they have GUI programs to play with stuff
> like this, 
>       > plus more. 
>       > 
>       > Gary 
>       > 87 16V Scirocco (FS $975) 
>       > 80 Callaway Stage 3 Rocco 
>       > 91 Alfa Romeo 3.0 V6 5spd, lowered 
>       > 
>       > Message: 57 
>       > From: "Scourge"  
>       > To: "Rocco list"  
>       > Subject: 
>       > Date: Mon, 5 May 2003 18:33:42 -0400 
>       > 
>       > This is a multi-part message in MIME format.
> 
>       > 
>       > ------=_NextPart_000_0007_01C31334.DABF40A0 
>       > Content-Type: text/plain; 
>       > charset="iso-8859-1" 
>       > Content-Transfer-Encoding: quoted-printable 
>       > 
>       > Hey 
>       > 
>       > Just curious, what the stock compression on
> 16v's? 
>       > 2.0 and 18 
>       > And what about a stock jh? 
>       > 
>       > I think it's in the high 8's or low 9's for
> the jh. 
>       > Does a 1.8 16v head 
>       > = 
>       > on a 2.0 16v actually increase compression? 
>       > 
>       > 
>       > thanx 
>       > 
>       > -The George 
>       > 
>       > 
>       > > begin:vcard 
>       > n:F;Gary 
>       > tel;work:541.334.8485 
>       > x-mozilla-html:FALSE 
>       > 
>      
>
url:http://home.earthlink.net/~worldcyclist/index.html
> 
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>         
> 
>      
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