Topic: 1966 289 (HiPo) Exhaust Manifold to Engine (Gasket or no Gasket)

[Morsel]

Hey all,

I was searching through the forum looking for info or a picture of a exhaust manifold gasket, searching this subject I ran across an old thread and Bob mentioned that no gasket was used on the standard 289 and 289 HiPo's, so I just want to confirm this, if there was a gasket, I sure can't find any info on a part number or visual of what these looked like. Any clarification would be helpful...

Thanks,

Jason

[carlite65]

you can stop looking. ford did not use any gasket there.

[Morsel]

you can stop looking. ford did not use any gasket there.

Great, thank you, exactly what I was looking for, the truth

J

[J_Speegle]

Yes - easy to remember. No gasket at those surfaces for any of the classic V8's

[CharlesTurner]

If there ends up being a leak, can try getting the mating surfaces machined.

[Morsel]

If there ends up being a leak, can try getting the mating surfaces machined.

Yeah, going to have the exhaust manifolds machined prior to restoration and probably use Bob's method of a small amount of RTV High Temp Silicone just to ensure I get a seal... unless someone tells me that's a bad idea

Thanks,

Jason

[J_Speegle]

Yeah, going to have the exhaust manifolds machined prior to restoration and probably use Bob's method of a small amount of RTV High Temp Silicone just to ensure I get a seal... unless someone tells me that's a bad idea

Often you can still see the sealant - especially the red stuff

Last engine I used graphite between the surfaces like is called out in the original engineering drawings and instructions on many of the period Ford engines. Worked out well so far.

[Morsel]

Often you can still see the sealant - especially the red stuff

Last engine I used graphite between the surfaces like is called out in the original engineering drawings and instructions on many of the period Ford engines. Worked out well so far.

Ah, interesting, I like that graphite idea, may give that a try instead, why not, if it was good enough for them And I would never use RED RTV

Thanks Jeff...

[RoyceP]

The factory shop manual calls for lithium grease on the manifolds to cylinder head surfaces. It is sold in auto parts stores under the trade name Lubriplate.

[mgmradio]

Don't use RTV , you'd just be asking for a leak. On the metal to metal contact surfaces if there are any leaks they will seal up with carbon.

[Bob Gaines]

Often you can still see the sealant - especially the red stuff

Last engine I used graphite between the surfaces like is called out in the original engineering drawings and instructions on many of the period Ford engines. Worked out well so far.

I don't want to see the high temp sealer (orange stuff) so I use a pick in case any squeezes out . I do not want to see it. I typically only put a very thing coat . I don't want to take the chance to hear a exhaust leaks which carbon my or may not seal up . It is just a little insurance policy which to others may not think is needed. In my case I don't want to take the chance of a problem and since it is typically invisible with the right effort the detail makes sense to me . Others may think differently .