I always deburr the figure eight gaskets, and I give the liners a
whack with a lead hammer to seat them. Seems to make a difference.
On Jul 1, 2008, at 4:11 PM, Tim Murphy wrote:
> ----- Original Message -----
> From: "Tim Murphy" <timmurph@fastbytes.com>
> To: <rikrock@aol.com>
> Sent: Tuesday, July 01, 2008 3:14 PM
> Subject: Re: [Fot] Liner Protrusion?
>
>
>> I'm just in the process of doing this myself on a TR4 motor. The
>> protrusion that I have with the stock figure 8's is:
>>
>> #1 Manifold side 0.002 Camshaft side 0.005
>> #2 Manifold side 0.002 Camshaft side 0.004
>> #3 Manifold side 0.002 Camshaft side 0.004
>> #4 Manifold side 0.004 Camshaft side 0.005
>>
>> I'm using the composite (Payen) head gasket. I'll use either
>> Permatex
>> Aircraft Form-a-Gasket or Permatex Indian Head Gasket Shellac,
>> whichever
>> feels and looks thinner at the time.
>>
>> Note that on the figure 8 gaskets I found a little burr on the edge
>> from
>> the dies when they are stamped out. I stoned the gaskets and this
>> reduced
>> the protrusion by about 0.002 inch. I made the measurements with the
>> sleeve clamped in to the block on opposite sides with washers,
>> spacers and
>> the head nuts (had to use toe clamps from the milling machine to
>> reach #2
>> and #3). Prior to clamping and measuring I did "seat" the sleeves per
>> Kas's book. I haven't measured the thickness of the figure 8's, just
>> measured protrusion. Did mark all sleeves for bore hole and
>> direction of
>> insertion as well as marking figure 8's and position in block
>> bores. Also
>> cleaned the block "seat" by wire brushing, emery cloth and then
>> cleaned
>> with lacquer thinner.
>>
>> Tim
>> 1961 TR4 #317
>>
>>
>> ----- Original Message -----
>> From: <rikrock@aol.com>
>> To: <fot@autox.team.net>
>> Sent: Tuesday, July 01, 2008 2:21 PM
>> Subject: [Fot] Liner Protrusion?
>>
>>
>>> Amici,
>>>
>>> I'm building a new TR4 motor.? Planning to use a steel shim
>>> headgasket.?
>>> Along with the shaved head, compression ratio will be aprrox. 11:1.
>>>
>>> With the new 89mm liners clamped down lightly on top of dry figure 8
>>> gaskets which measure .0145" thick, cylinders 1, 2, and 3
>>> liner?protrusion measures between .003" and .004".? Cylinder #4
>>> protrusion measures between .005" and .006".? My question is....
>>> what are
>>> the chances the steel shim headgasket? will seal properly with these
>>> heights and variation?
>>>
>>> Further, what do you like to use for sealer on the (steel) figure
>>> 8's and
>>> steel shim gaskets?
>>>
>>> Thanks!
>>>
>>> Rich Rock
>>> _______________________________________________
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>>>
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>>>
>>> You are subscribed as timmurph@fastbytes.com
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Bill Babcock
Babcock & Jenkins
Billb@bnj.com
503.936.7660
www.bnj.com
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