<VV> Milling Piston Faces

[Roger Gault]

Take a chance, don't mill them.  If it pings, all you have to do is take it
all apart again.  ;-)
Or, buy a Safeguard.

Seriously, I didn't mill mine, so I'm running about 10.5:1 on 93 octane.
Very seldom pings unless I lug it below 1500 RPM or so.  If Matt N. would
come over here and modify my advance curve, like he preaches about, it would
never ping.  ;-)

I run without lower shrouds when it gets above 95 or so here in Austin, so I
am cheating a little.

Roger G.

----- Original Message ----- 
From: "Geoffrey Johnson" <geoffj at unm.edu>
To: <virtualvairs at corvair.org>
Sent: Thursday, December 28, 2006 12:15 PM
Subject: <VV> Milling Piston Faces


> Still working on plans for the engine I am building.
>
> I need to bring the compression down.   Milled 140 heads.    So I want
> to cut the face of the pistons opposite the valves such as is noted in
> many places.
>
> What type of pistons will handle having the .070 or so milled off
> without compromising its strength?
>
>
> At this point I am thinking of putting together a cheapy place holder
> 95 using parts on hand to have for the time being while I build this
> engine.
>
>
> Thanks
> Geoff Johnson
>
>
>  _______________________________________________
> This message was sent by the VirtualVairs mailing list, all copyrights are
the property
> of the writer, please attribute properly. For help,
mailto:vv-help at corvair.org
> This list sponsored by the Corvair Society of America,
http://www.corvair.org/
> Post messages to: VirtualVairs at corvair.org
> Change your options:
http://www.vv.corvair.org/mailman/options/virtualvairs
>  _______________________________________________