[Fot] Never be beaten by equipment

[Robert Deanes]

I run about ..006 for my clearance with Wiesco pistons, they are popular in
the marine industry and they have the same characteristics...or problems
without the clearance..need more room, I also add more clearance to
the connecting rod at the crank  so that more oil can be delivered,I was
told it was an old dragster trick..seems to work.

.
On Tue, Sep 11, 2012 at 4:25 PM, <tr4racing at googlemail.com> wrote:

> 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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>
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-- 
rob deanes
TR Racer