--===============1006736038610929178==
boundary="=_237aff2db558ca2468d69d57859128e9"
--=_237aff2db558ca2468d69d57859128e9
Content-Transfer-Encoding: 7bit
format=flowed
My money is on this one... Blowing out the bottom of the intake gaskets
means you didn't get nearly enough pressure (if any) from that pesky
lower mounting stud and clamp. I have found if you use anything other
than a stock intake manifold and stock exhaust manifold, you must
scrutinize the area where the clamps will sit to ensure the height is
very similar. Or, modify the clamps by welding on something to make sure
when the clamp rests on the appropriate bits of the intake and exhaust
manifold, when the nut is tightened it puts equal pressure on both
manifolds. Obviously, the mounting face on each manifold needs to be
flat. Assuming you have everything in order, there is no reason a stock
manifold gasket will not work, I have run them when I could not get my
hands on the HD gaskets and they worked fine for me.
Last thought, the nuts that hold the manifolds on are notorious for
loosening up in time, and especially after the first few heat cycles.
And with everything installed, getting to the two bottom nuts can be a
pain. But, failure to keep them properly torqued leads to blown out
gaskets.
On 2025-04-09 06:55, vfracing--- via Fot wrote:
> Lyman;
>
> another possible cause is a mis match in the thicknesses of the intake and
> exhaust manifold flanges.
--=_237aff2db558ca2468d69d57859128e9
Content-Transfer-Encoding: quoted-printable
<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html; charset=
=3DUTF-8" /></head><body style=3D'font-size: 10pt; font-family: Verdana,Gen=
eva,sans-serif'>
<p>My money is on this one... Blowing out the bottom of the intake gaskets =
means you didn't get nearly enough pressure (if any) from that pesky lower =
mounting stud and clamp. I have found if you use anything other than a stoc=
k intake manifold and stock exhaust manifold, you must scrutinize the area =
where the clamps will sit to ensure the height is very similar. Or, modify =
the clamps by welding on something to make sure when the clamp rests on the=
appropriate bits of the intake and exhaust manifold, when the nut is tight=
ened it puts equal pressure on both manifolds. Obviously, the mounting=
face on each manifold needs to be flat. Assuming you have everything in or=
der, there is no reason a stock manifold gasket will not work, I have run t=
hem when I could not get my hands on the HD gaskets and they worked fine fo=
r me. </p>
<p>Last thought, the nuts that hold the manifolds on are notorious for loos=
ening up in time, and especially after the first few heat cycles. And with =
everything installed, getting to the two bottom nuts can be a pain. But, fa=
ilure to keep them properly torqued leads to blown out gaskets.</p>
<div id=3D"signature"> </div>
<p><br /></p>
<p id=3D"reply-intro">On 2025-04-09 06:55, vfracing--- via Fot wrote:</p>
<blockquote type=3D"cite" style=3D"padding: 0 0.4em; border-left: #1010ff 2=
px solid; margin: 0">
<div id=3D"replybody1">
<div>
<div class=3D"v1ydpc0738470yahoo-style-wrap" style=3D"font-family: arial; f=
ont-size: 16px;">
<div> </div>
<div dir=3D"ltr">Lyman;</div>
<div dir=3D"ltr"> </div>
<div dir=3D"ltr"> another possible cause is a mis match in the thickne=
sses of the intake and exhaust manifold flanges.</div>
</div>
</div>
</div>
</blockquote>
</body></html>
--=_237aff2db558ca2468d69d57859128e9--
--===============1006736038610929178==
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
--===============1006736038610929178==--
|