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Re: [Fot] Never be beaten by equipment

To: "fubog1" <fubog1@aol.com>,johnstydo@gmail.com
Subject: Re: [Fot] Never be beaten by equipment
From: tr4racing@googlemail.com
Date: Tue, 11 Sep 2012 20:25:59 +0000
Cc: fot@autox.team.net
Delivered-to: fot-archive@autox.team.net
Delivered-to: fot@autox.team.net
References: <1347376097.25948.YahooMailNeo@web125004.mail.ne1.yahoo.com> <000c01cd9031$6be63a60$43b2af20$@com> <D8DBA1B04A5A4E07BA5239FE3B77A7CD@gdhs.local> <8CF5E4C300282B3-1878-45642@webmail-m009.sysops.aol.com> <003901cd903f$b76ac6a0$264053e0$@net> <8CF5E58428D0B49-1878-460F1@webmail-m009.sysops.aol.com> <CAMJWJcHk8B13mRCQYZkSjmB649QT1TSj7kKuNqnLHcsH7T5eng@mail.gmail.com> <8CF5E7239391D72-1878-478A9@webmail-m009.sysops.aol.com>
Sensitivity: Normal
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@aol.com>
Date: Tue, 11 Sep 2012 16:21:56 
To: <johnstydo@gmail.com>
Cc: <mmoore@wave1.net>; <jhhasty@gdhs.com>; <tr4racing@googlemail.com>; 
<fot@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@gmail.com>
To: fubog1 <fubog1@aol.com>
Cc: mmoore <mmoore@wave1.net>; jhhasty <jhhasty@gdhs.com>; tr4racing 
<tr4racing@googlemail.com>; fot <fot@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@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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