WhaT clearance value we are talking about?
-----Urspr|ngliche Nachricht-----
Von: fot-bounces@autox.team.net [mailto:fot-bounces@autox.team.net] Im
Auftrag von Henry Frye
Gesendet: Samstag, 8. November 2008 12:50
An: fot@autox.team.net
Betreff: Re: [Fot] 87mm liner needed
Many thanks to Joe Boruch, I am all set partswise.
Interesting follow-up, I brought the offending liner and piston to my
machine
shop and they said I overheated that jug. The piston had a black spot 90
degrees from the crankpin, halfway up the skirt that matched the grooves in
the liner. The opposite side of the piston showed a little scuffing, but no
metal transfer yet. That is the area of the piston that expands the most
when
hot. Apparently, I was running insufficient piston to cylinder wall
clearance.
Here's the kicker, this happened to the front cylinder, number 1, closest to
the water pump. The last place I would expect to overheat a jug.
So we are going to open up the piston to wall clearance some more across the
board...
-----Original Message-----
From: Henry Frye
Subject: [Fot] 87mm liner needed
I tore down my race engine yesterday and found I have one
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