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Re: [Fot] Beware of Moss figure eight gaskets

To: "Larry Young" <cartravel@pobox.com>
Subject: Re: [Fot] Beware of Moss figure eight gaskets
From: "Kas Kastner" <kaskas@cox.net>
Date: Sun, 13 Sep 2009 12:02:03 -0700
To shorten a sleeve and you do not have a lathe to do the job square, try 
lapping on a sheet of 180 grit wet and dry paper on a sheet of glass. Use 
water on the paper as a lapping  liquid. Old car window or piece from a 
plate glass house (have them smooth the edges). Turn the sleeve in your hand 
as you lap so no one side is favored. Works pretty well when you only need 
couple or so thou's.
----- Original Message ----- 
From: "Larry Young" <cartravel@pobox.com>
To: "MORDY DUNST" <gasket.works@verizon.net>
Cc: <fot@autox.team.net>
Sent: Sunday, September 13, 2009 11:27 AM
Subject: Re: [Fot] Beware of Moss figure eight gaskets


>I don't know how anyone ever gets by using the gaskets that come with a
> rebuild kit.  I've never found them to produce the correct height.  I've
> always done it similar to Mordy's approach.  Mordy will make the gaskets
> for anyone, but that involves the (snail) mailman in a trial and error
> operation.  I found a simple way to make my own gaskets.  I usually make
> a bunch at a time in a variety of thicknesses.  The method is posted at
> the bottom of Tony's "uncle jacks engine building tips",
> www.tonydrews.com.  In a pinch, I have also cut down my liners on a belt
> sander.  This works, but you have to be careful to keep them straight.
> As you remove material, frequently measure the liner height with
> calipers at different positions around the liner.
>
> Larry
>
> MORDY DUNST wrote:
>> You would never have enough clamping force on the liners to crush dead
>> soft copper fig of 8's appreciably.  No, the liner gaskets need to be
>> at the appropriate thickness to raise the liners to the proper
>> height.  Naturally, this measurement needs to be done under some load.
>>
>> What I do is meticulously clean the the block liner perch and ensure
>> the liner pedestal is clean. -then fit the liner bare.  Measure the
>> liner position relative to the deck.  I use a simple but straight edge
>> and use a feeler gauge to get the clearance. Then make a determination
>> as to the fig of "8" gasket needed to get the liner to .005" in my
>> racing motor.  .003" is not enough (me thinks).   I make individual
>> rings for each liner as needed. I can't believe that figure of 8
>> gaskets still exist.  I may have .012" on one liner and .014" on its
>> neighbor.   Alternatively, I sometimes face off the liner on a lathe
>> to clean it up and use thicker rings as needed.
>>
>> For the purpose of a sealant on the bottom of the liner to the
>> block... use a very thin coat of aviation gasket sealant, gascachinch,
>> indian head shellac... or some thin goop. You don't need much.  At one
>> time I used no goop at all.  I don't use yammabond, hylomar, silicone
>> Rtv for this purpose they will raise the liner a bit.
>>
>>
>>
>>
>> Mordy
>>
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