[Fot] Pistons

[MadMarx]

One thing about Wiseco pistons.
If they suggest a piston to wall clearance of 0.003" - don't believe them.
This is only for stock street engines.
For racing engines they suggest on their web page 0.005 - 0.006" clearance.
So be careful.

A word to melted pistons.
Pistons with a hole in the middle often die from lean mixture.
Pistons with a hole through the ring zone often die from not enough valve
clearance.
Detonation often does harm the rings and break them.

Cheers
Chris




-----Urspr|ngliche Nachricht-----
Von: fot-bounces at autox.team.net [mailto:fot-bounces at autox.team.net] Im
Auftrag von colordog.1 at earthlink.net
Gesendet: Dienstag, 8. Juli 2008 20:06
An: Bill Babcock; fot-bounces at autox.team.net; westerneagleracing at att.net
Cc: fot at autox.team.net
Betreff: Re: [Fot] Pistons

I just bought a set of Wisecos from Ken G.  They are beautifully made.

Steve B
------Original Message------
From: Bill Babcock
Sender: fot-bounces at autox.team.net
To: westerneagleracing at att.net
Cc: fot at autox.team.net
Sent: Jul 8, 2008 10:56 AM
Subject: Re: [Fot] Pistons

Did you figure out what burned the holes? That would usually be an air
leak, but it could be detonation. You tell by looking at the pistons.
Look online for pictures of pistons with detonation vs. air leak--easy
to tell.

I like the pistons that Ken Gillanders sells, whatever they are. I
think they're wisecos, but I'm not sure. You need to do a through
cleaning of the engine after a piston holing. Lots of junk gets into
the bottom end.
On Jul 8, 2008, at 9:45 AM, westerneagleracing at att.net wrote:

> FoT,
> At the Wine Country Classic I burned holes in two of the pistons on
> my TR-4A.  I am interest in what you racers would suggest as
> replacement pistons.  The engine was built about a year and half ago
> and dynoed at 165 hp.  It has Carrillo rods that were not damaged.
> Thanks.
> Ron Jacobs
> Western Eagle Racing
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Bill Babcock
Babcock & Jenkins
Billb at bnj.com
503.936.7660
www.bnj.com
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