Re: Compression question

["Wm. Josiah Erikson" <josiah@gsinet.net>]

Just wanted to throw out that my aforementioned Scirocco with 350-360K on it
burned no oil when I junked it. Compression rings and oil rings are different,
so I'm told, so you can have bad compression and still burn no oil.
    -Josiah
        '83 Scirocco
    '84 GTi
    '86 Scirocco 8v
    '87 QSW
    http://www.gsinet.net/~josiah

Alex Tomic wrote:

> I've come across an 84 scirocco (8v) which I bought as a parts car
> originally, and as I mentioned once before, have a very very strong engine
> in it, 160/155/155/160 psi per cylinder. What I was wondering, is, how
> exactly is the compression ratio related to the psi of compression you get
> when testing it? I figured maybe, since cyl. 1 makes 160psi compression,
> and one atm (atmospheric pressure) is 14.7psi, that would make cyl.1 have a
> compression ratio of 10.8:1 ! This seems too high of course, so I"m
> wondering where my flaw in logic is... also, how much compression does a
> new JH have, 180 per cylinder? If i have so much compression in this
> engine, should oil burning be an issue at all? I'm thinking of dumping the
> current car in favor of fixing what I thought was my parts car... turns out
> all i need is a water pump, front struts, tires and a paint job to have
> myself a sweeeet car!
>
> Ooh and best of all -- the odometer stills works perfectly! Hopefully i'll
> get it past 300,000 km. The amazing thing is that the engine has got
> 257,000 km's on it, and is so strong! Gotta love vw's!
>
> Alex Tomic - Monkey #37 -   "Peace Sells...But Who's Buying?"
> atomic7@home.com - http://members.home.net/atomic7
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