<VV> Milling Piston Faces

[Geoffrey A Johnson]

Mike,
Thanks for the info.   I have followed your posts on your engines in the 
past and taken notes.   I have already milled these to set the quench at 
.032.   I want to mill the faces of the pistons  just opposite the valve 
area.   These are 
140 heads.
I ran this engine in our corsa for a while, with the heads milled.  Hardly 
pinged on 91.   It got 
HOT though.   Fins deflashed, all the fun stuff except an external oil 
cooler.   I think that is why the piston siezed.   They were forged true 
.040's with total seal rings.   Did not sieze so much as number 6 galled 
into the walls.   Lost power at around 80, stumbled, and regained, but 
started blowing smoke and had a distinct sound.

Have also run a 110 in a GB with milled heads for a while as well.   Ran 
great on 87.

The temporary  engine I am assembling right now will use an early 
crank with milled 64 110's 
to get 
a tight .032 squish, and keep a decent overall CR of around 9:1.   Should 
run 
on the cheapest gas out there.

-Geoff


On Fri, 29 Dec 2006 Mikeamauro at aol.com wrote:

> that much, but still more then I liked..."
>
> Geoffrey:
> I'm late to this conversation; have you reduced the cylinder head quench
> area? Stock is somewhere around 60-70K, and this makes the 110 especially prone
> to detonation.