Thermactor ports

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Sep 12, 2007 | 05:53 PM

rjvaughan

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Joined: May 2005

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From: Lucan, ON

Thermactor ports

Hi,

What do folk usually do with the thermactor ports in the back of the heads (assuming they get rid of the thermactor system)?

I was thinking they could be tapped and a bolt screwed in?

I've got a '79 460.

Thanks in advance for the advice.

Rob.

Sep 12, 2007 | 07:34 PM

79superduty

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could do that or a steel or brass soft plug.

Sep 13, 2007 | 11:16 AM

mcdonaldm

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Joined: Jun 2004

Posts: 800

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From: Edmonton, Alberta Canada

i tapped my heads and installed a SS plug into them. the port is actually a stepped hole, that is there is a larger outer hole and smaller inner hole. the inner hole is sized perfectly for i think it was a 1/4" npt tap and plug. just put a lot of grease on the tap so no shavings get inside the head and into the engien.

they do make plugs to fit these holes as they are a weird size, but the tap method was easy to do.

rgds
Mike

Sep 13, 2007 | 11:40 AM

rjvaughan

Thread Starter

Freshman User

Joined: May 2005

Posts: 48

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From: Lucan, ON

Thanks for the info Mike, does SS mean stainless steel in this case? I would be doing this with the heads off before they were cleaned and re-built.

Sep 16, 2007 | 10:56 PM

fasthauler

Fleet Mechanic

Joined: Mar 2004

Posts: 1,398

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From: Hesperia, CA

It wouldn't make any difference if the were stainless steel or not. They are never going to come out again, so it doesn't make any difference if the corrode or not.