[Fot] Never be beaten by equipment

[Kas Kastner]

During tests a couple eons ago we did a simular test and found the sleeve was
like pushing on the end of a garden hose. (87 mm), only not quite as
predictable. it cerrtain turned me into  .0045" to .005" clearance guy. The
best seal and power I ever had was when I lapped the rings to the sleeve, gave
the piston a lot of clearance, and wished it well in the war days to come. As
long as that spark plug comes out of the bore after racing with a crusty ring
on the edge looking like tiny potato chips you could not make it better.

Never be beaten by equipment
 > To: fubog1 at aol.com; johnstydo at gmail.com
> From: tr4racing at googlemail.com
> Date: Tue, 11 Sep 2012 20:46:49 +0000
> CC: fot at autox.team.net
> Subject: Re: [Fot] Never be beaten by equipment
>
> At what bore size?
>
> Gesendet mit BlackBerry von Vodafone
>
> -----Original Message-----
> From: fubog1 <fubog1 at aol.com>
> Date: Tue, 11 Sep 2012 16:45:10
> To: <tr4racing at googlemail.com>; <johnstydo at gmail.com>
> Cc: <fot at autox.team.net>
> Subject: Re: [Fot] Never be beaten by equipment
>
>
>  Well not to start a controversy, but I have one on the bench right now,
torqued down and ready to go, and the mics don't lie.
> The liners tend to waist down around the lower register.
> Glen
>
>
>
>
>
>
> -----Original Message-----
> From: tr4racing <tr4racing at googlemail.com>
> To: fubog1 <fubog1 at aol.com>; johnstydo <johnstydo at gmail.com>
> Cc: fot <fot at autox.team.net>
> Sent: Tue, Sep 11, 2012 4:26 pm
> Subject: Re: [Fot] Never be beaten by equipment
>
>
> We did a lot of testing with torque plate and we found NO difference with or
> without.
> Gesendet mit BlackBerry von Vodafone
>
> -----Original Message-----
> From: fubog1 <fubog1 at aol.com>
> Date: Tue, 11 Sep 2012 16:21:56
> To: <johnstydo at gmail.com>
> Cc: <mmoore at wave1.net>; <jhhasty at gdhs.com>; <tr4racing at googlemail.com>;
> <fot at autox.team.net>
> Subject: Re: [Fot] Never be beaten by equipment
>
>
>  The other point that should be mentioned is that these liners should be
honed
> using a torque plate.
> They get out of shape once they are clamped down in place.
> FWIW I use JE pistons and set them at .004, usually with coated skirts as an
> added insurance policy against scuffing.
> Glen
>
>
>
>
>
> -----Original Message-----
> From: John Styduhar <johnstydo at gmail.com>
> To: fubog1 <fubog1 at aol.com>
> Cc: mmoore <mmoore at wave1.net>; jhhasty <jhhasty at gdhs.com>; tr4racing
> <tr4racing at googlemail.com>; fot <fot at autox.team.net>
> Sent: Tue, Sep 11, 2012 2:42 pm
> Subject: Re: [Fot] Never be beaten by equipment
>
>
> My math shows that MadMarx is running .005" piston to wall clearance
(.13mm/25.4
> mm/inch=.005.  Wiseco's suggested clearance for their forged 87mm slugs is
.004,
> but others (BFE)  have recommended .006, which is what my machinist is
honing
> to.
>
> On Tue, Sep 11, 2012 at 1:16 PM, fubog1 <fubog1 at aol.com> wrote:
>
>  I'll try this again, my reply had too much text.
> The manufacturers will call out a recommended clearance, but that's all it
is.
> The operating speed, temperatures, cooling systems etc all are variables.
> Generally the harder it is run, the more clearance it needs.
> Also pistons can scuff during warm-up, under certain conditions, so it's a
> good thing to get it up to temp before flogging it hard.
> Glen
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