Re: [Fot] [TR] Sealants used on Fo8 gaskets

[Paul Ricco via Fot <fot@autox.team.net>]

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FOT,

I have one thought to add to the sealant conversation and I am not =
intending to restart the entire oil debate by commenting on this.   I =
know that many on the list feel that Brad Penn is the only oil, and that =
is OK if that is your belief.

However, there are many good race oil choices on the market and more =
being added every day.  Some of the synthetic and synthetic blend race =
oils have an additive package in them that is very aggressive to some of =
the traditional sealants.  They will actually dissolve them even after =
they are cured.

My tought here -  if you have interest in trying a particular oil you =
should check with the oil manufacturers tech support regarding sealant =
compatibility.  Do some homework upfront and it will save you from =
having to tear down a fresh engine to re-seal your rear main gasket, oil =
pan, etc, etc.

Just my two-sense on the sealant subject.

Paul Ricco

> On Feb 6, 2021, at 8:17 PM, Greg Hilyer via Fot <fot@autox.team.net> =
wrote:
>=20
> Don=E2=80=99t know if it=E2=80=99s my trick or if everyone does it =
but...=20
> Once I=E2=80=99ve got the liner landing as clean as I can get it, I =
use a old liner as a hone and by twisting is back and forth with some =
valve lapping compound, get a nice shiny ring on the block mating face. =
Clean it up good and then use your sealant of choice.
> Greg =E2=80=9CLunker=E2=80=9D Hilyer
> Albuquerque NM
>=20
> On Feb 6, 2021, at 6:30 PM, Frank Fisher via Fot <fot@autox.team.net =
>=20
>> hylomar.
>>=20
>> never sets up solid like silicone.
>> that means you have time to set the liners and go have a scotch, come =
back, mess around.=20
>> leave it overnight and take up the task again tomorrow.
>>=20
>> the best gasket dressing ever invented.
>>=20
>> Frank
>>=20
>> On Friday, February 5, 2021, 09:52:33 PM PST, Dan Cronin =
>>=20
>>=20
>> Folks
>> Looking for some background information and recommendations on the =
preferred Fo8 gasket sealing compound that seems to have worked for each =
of you in your various engine re-builds.  And  any comments / =
observations you choose to share either on or off list. The motor I am =
building has a 89 mm piston and liner kit from BFE along with Corrello =
rods / bolts and a Crower dummy main crank connected at the front with a =
ATI Super Damper and at the rear to a Fidanza Alloy Flywheel with =
diaphragm clutch, an HVDA conversion with alloy drive shaft to a Quaife =
4.11:1 diff. and alloy back cover.  Stainless Steel valves with 0.050 =
oversize intake thru Mang. Bronze guides. H/S roller rockers on alloy =
pedestals.  BPNW 270 duration cam. The TR4A head has had 0.040 removed =
mostly to true things up and remove prior imperfections.  The head =
chambers have been mildly worked to smooth any sharp edges and even =
things out with a resulting chamber volume of 60.5cc each.  I am =
planning on installing Gasket Works 0.022 copper gasket with their 0.005 =
=E2=80=9CO=E2=80=9D compression rings on the head side of the gasket =
that will be sprayed with a copper coating on each side.  Gasket Works =
sent a set of Fo8 individual gaskets that has allowed me to obtain a =
liner protrusion of 0.0025 to 0.003.  Am aiming at a compression ratio =
of around 9.75 to 1+/- . Looking forward to as many responses as =
possible to assist in trying to get this critical step as close to right =
as I can.
>> DC
>> <IMG_3668.jpeg>
>>=20
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>> <IMG_3668.jpeg>
>> _______________________________________________
>>=20
>> http://www.fot-racing.com <http://www.fot-racing.com/>
>>=20
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>>=20
>>=20
> _______________________________________________
> fot@autox.team.net
>=20
> http://www.fot-racing.com
>=20
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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html; =
charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; line-break: after-white-space;" =
class=3D"">FOT,<div class=3D""><br class=3D""></div><div class=3D"">I =
have one thought to add to the sealant conversation and I am not =
intending to restart the entire oil debate by commenting on this. &nbsp; =
I know that many on the list feel that Brad Penn is the only oil, and =
that is OK if that is your belief.</div><div class=3D""><br =
class=3D""></div><div class=3D"">However, there are many good race oil =
choices on the market and more being added every day. &nbsp;Some of the =
synthetic and synthetic blend race oils have an additive package in them =
that is very aggressive to some of the traditional sealants. &nbsp;They =
will actually dissolve them even after they are cured.</div><div =
class=3D""><br class=3D""></div><div class=3D"">My tought here - =
&nbsp;if you have interest in trying a particular oil you should check =
with the oil manufacturers tech support regarding sealant compatibility. =
&nbsp;Do some homework upfront and it will save you from having to tear =
down a fresh engine to re-seal your rear main gasket, oil pan, etc, =
etc.</div><div class=3D""><br class=3D""></div><div class=3D"">Just my =
two-sense on the sealant subject.</div><div class=3D""><br =
class=3D""></div><div class=3D"">Paul Ricco</div><div class=3D""><div><br =
class=3D""><blockquote type=3D"cite" class=3D""><div class=3D"">On Feb =
6, 2021, at 8:17 PM, Greg Hilyer via Fot &lt;<a =
href=3D"mailto:fot@autox.team.net"; class=3D"">fot@autox.team.net</a>&gt; =
wrote:</div><br class=3D"Apple-interchange-newline"><div class=3D""><meta =
http-equiv=3D"content-type" content=3D"text/html; charset=3Dutf-8" =
class=3D""><div dir=3D"auto" class=3D""><div dir=3D"ltr" =
class=3D""></div><div dir=3D"ltr" class=3D"">Don=E2=80=99t know if =
it=E2=80=99s my trick or if everyone does it but...&nbsp;</div><div =
dir=3D"ltr" class=3D"">Once I=E2=80=99ve got the liner landing as clean =
as I can get it, I use a old liner as a hone and by twisting is back and =
forth with some valve lapping compound, get a nice shiny ring on the =
block mating face. Clean it up good and then use your sealant of =
choice.</div><div dir=3D"ltr" class=3D"">Greg =E2=80=9CLunker=E2=80=9D =
Hilyer</div><div dir=3D"ltr" class=3D"">Albuquerque NM</div><div =
dir=3D"ltr" class=3D""><br class=3D"">On Feb 6, 2021, at 6:30 PM, Frank =
Fisher via Fot &lt;<a href=3D"mailto:fot@autox.team.net"; =
class=3D"">fot@autox.team.net</a>&gt; wrote:<br class=3D""><br =
class=3D""></div><blockquote type=3D"cite" class=3D""><div dir=3D"ltr" =
class=3D""><div class=3D"ydpa6a2aedcyahoo-style-wrap" =
style=3D"font-family:Helvetica Neue, Helvetica, Arial, =
sans-serif;font-size:16px;"><div class=3D""></div>
        <div dir=3D"ltr" data-setdir=3D"false" =
class=3D"">hylomar.</div><div dir=3D"ltr" data-setdir=3D"false" =
class=3D""><br class=3D""></div><div dir=3D"ltr" data-setdir=3D"false" =
class=3D"">never sets up solid like silicone.</div><div dir=3D"ltr" =
data-setdir=3D"false" class=3D"">that means you have time to set the =
liners and go have a scotch, come back, mess around.&nbsp;</div><div =
dir=3D"ltr" data-setdir=3D"false" class=3D"">leave it overnight and take =
up the task again tomorrow.</div><div dir=3D"ltr" data-setdir=3D"false" =
class=3D""><br class=3D""></div><div dir=3D"ltr" data-setdir=3D"false" =
class=3D"">the best gasket dressing ever invented.</div><div dir=3D"ltr" =
data-setdir=3D"false" class=3D""><br class=3D""></div><div dir=3D"ltr" =
data-setdir=3D"false" class=3D"">Frank</div><div class=3D""><br =
class=3D""></div>
       =20
        </div><div id=3D"ydp2984ea6cyahoo_quoted_3384257547" =
class=3D"ydp2984ea6cyahoo_quoted">
            <div style=3D"font-family:'Helvetica Neue', Helvetica, =
Arial, sans-serif;font-size:13px;color:#26282a;" class=3D"">
               =20
                <div class=3D"">
                    On Friday, February 5, 2021, 09:52:33 PM PST, Dan =
Cronin &lt;<a href=3D"mailto:adcronin@mi.rr.com"; =
class=3D"">adcronin@mi.rr.com</a>&gt; wrote:
                </div>
                <div class=3D""><br class=3D""></div>
                <div class=3D""><br class=3D""></div>
                <div class=3D""><div id=3D"ydp2984ea6cyiv8272376385" =
class=3D""><div class=3D"">Folks<div =
class=3D"ydp2984ea6cyiv8272376385">Looking for some background =
information and recommendations on the preferred Fo8 gasket sealing =
compound that seems to have worked for each of you in your various =
engine re-builds. &nbsp;And &nbsp;any comments / observations you choose =
to share either on or off list. The motor I am building has a 89 mm =
piston and liner kit from BFE along with Corrello rods / bolts and a =
Crower dummy main crank connected at the front with a ATI Super Damper =
and at the rear to a Fidanza Alloy Flywheel with diaphragm clutch, an =
HVDA conversion with alloy drive shaft to a Quaife 4.11:1 diff. and =
alloy back cover. &nbsp;Stainless Steel valves with 0.050 oversize =
intake thru Mang. Bronze guides. H/S roller rockers on alloy pedestals. =
&nbsp;BPNW 270 duration cam. The TR4A head has had 0.040 removed mostly =
to true things up and remove prior imperfections. &nbsp;The head =
chambers have been mildly worked to smooth any sharp edges and even =
things out with a resulting chamber volume of 60.5cc each. &nbsp;I am =
planning on installing Gasket Works 0.022 copper gasket with their 0.005 =
=E2=80=9CO=E2=80=9D compression rings on the head side of the gasket =
that will be sprayed with a copper coating on each side. &nbsp;Gasket =
Works sent a set of Fo8 individual gaskets that has allowed me to obtain =
a liner protrusion of 0.0025 to 0.003. &nbsp;Am aiming at a compression =
ratio of around 9.75 to 1+/- . Looking forward to as many responses as =
possible to assist in trying to get this critical step as close to right =
as I can.</div><div class=3D"ydp2984ea6cyiv8272376385">DC</div><div =
class=3D"ydp2984ea6cyiv8272376385">&lt;IMG_3668.jpeg&gt;</div></div></div>=
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