why is my compression bad? :(

[abatzis2@hotmail.com (Michael Abatzis)]

the lack of power is due to you not having enough valves ;) a 10 psi drop 
isn't a lot.  don't know what the specs are for the 8v, but if the pressures 
are even on a newly rebuilt engine, there's nothing to worry about. did you 
use the same gauge for both readings? also, if this was *immediately* after 
the rebuild, you probably had some assembly lube in there sealing off the 
chambers.



-Michael Abatzis
Hotlanta! GA
1988 Scirocco 2L 16v RIP-->parting, finally taking orders: 
www.learnlink.emory.edu/~mabatzi/mikes_page1.html
1987 Scirocco 2L 16v...




>
> >  -----Message d'origine-----
> > De : 	scirocco-l-admin@scirocco.org 
>[mailto:scirocco-l-admin@scirocco.org]
>De la part deRobbie Cotner
> > Envoye :	2 mars, 2003 17:27
> > A :	scirocco-l@scirocco.org
> > Objet :	why is my compression bad?  :(
> >
> > I ran a compression check on my JH 8v today, 135-140psi on all 
>cylinders.
>Adding some 80w-90 to the cylinders raised all readings ~10-12psi.  This
>thing was rebuilt 10k ago, immediately after the rebuild I had 150psi on 
>all
>cylinders!?  I was hoping compression would increase once the rings got
>seated.  From what I've read 130psi is the minimum for JH's, I'm not happy.
>Is this why my engine has such low power?  I really have babied this thing,
>never revved above 5k, I've changed the oil many times and am running
>synthetic 10w-30.  My exhaust smokes all the time, but the smoke is white 
>as
>a ghost and I attributed it to the cold...  my spark plugs also show no
>indication of burning oil.  Any opinions on this?  Thanks in advance,
> >
> > Rob
>
>
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