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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 20:58:34 +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> <20120911202321.695F82D027B@autox.team.net> <8CF5E75784B4954-1878-47B9F@webmail-m009.sysops.aol.com> <1307873001-1347396412-cardhu_decombobulator_blackberry.rim.net-361611464-@b5.c2.bise7.blackberry> <8CF5E77200A40D8-1878-47CF4@webmail-m009.sysops.aol.com>
Sensitivity: Normal
I use old liners and enlarge the to 88mm.

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-----Original Message-----
From: fubog1 <fubog1@aol.com>
Date: Tue, 11 Sep 2012 16:57:01 
To: <tr4racing@googlemail.com>; <johnstydo@gmail.com>
Cc: <fot@autox.team.net>
Subject: Re: [Fot] Never be beaten by equipment


 87mm (3.425). I usually use BFEs LA Sleeve liners, they are pretty stout 
compared to stock liners but still need a torque plate hone IMHO.
Glen

 

 

-----Original Message-----
From: tr4racing <tr4racing@googlemail.com>
To: fubog1 <fubog1@aol.com>; johnstydo <johnstydo@gmail.com>
Cc: fot <fot@autox.team.net>
Sent: Tue, Sep 11, 2012 4:46 pm
Subject: AW: Re: [Fot] Never be beaten by equipment


At what bore size?

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From:  fubog1 <fubog1@aol.com>
Date: Tue, 11 Sep 2012 16:45:10 -0400 (EDT)
To: <tr4racing@googlemail.com>; <johnstydo@gmail.com>
Cc: <fot@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@googlemail.com>
To: fubog1 <fubog1@aol.com>; johnstydo <johnstydo@gmail.com>
Cc: fot <fot@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.

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-----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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