[Fot] Beware of Moss figure eight gaskets

[Larry Young]

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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