To seal the threaded plug you can use Teflon tape.
Very effective.
Chris
----- Original Message -----
From: <Catpusher@aol.com>
To: <BillB@bnj.com>; <fot@autox.team.net>
Sent: Wednesday, August 10, 2005 7:27 AM
Subject: Re: Head Plug
> Bill,
>
> The fact that this plug leaks into the rocker area, and thus could dilute the
> oil in the sump
> did get my attention; the thought of a slow leak during an evening or
> storage, and the resulting water lube for the motor on restart did not seem
>very nice
>
> Hardy
>
> In a message dated 8/8/2005 5:52:46 PM Pacific Standard Time, BillB@bnj.com
> writes:
> My plug always seeps a little water. I never worried about it before this
> thread. I always figured a tiny bit of water in 235 degree oil isn't
> sticking around long. Still, it can't be a good thing.
>
> -----Original Message-----
> From: owner-fot@autox.team.net [mailto:owner-fot@autox.team.net] On Behalf
> Of Catpusher@aol.com
> Sent: Monday, August 08, 2005 3:57 PM
> To: fot@autox.team.net
> Subject: Re: Head Plug
>
> The last few new TR3B MK ll heads (TR4A) that I obtained directly from the
> CA factory depot had the top of the plug peened around the plug OD; clearly
> a factory modification.
>
> A trackside fix is to drill and tap the plug, say for half inch NC and put a
> set screw through a flat washer large enough to cover the plug into the new
> threads. The pulling force on the plug also helps to seal the threads; we
> put sealer on all items.
>
> I only had problems once with a head that had been heated to weld.
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