Depends on what process the shop uses to clean the block. If they use a
caustic tank, which is the process that really cleans everything, then
according to my shop, that plug will disintegrate or at least deteriorate.
They remove that plug on my blocks, and fortuantely the hole is tapped, and
you can screw in a standard socket head set screw and lock it with one of
the magic chemicals like Loctite. The same process can be used on the head
and crank, but be aware that there's a BIG plug like this on the top face of
the head, where the valve springs are. This one is also threaded but I don't
remember if it is a standard size. The last head I did, this plug was
leaking around the edge, so I drilled it out and unfortunately damaged the
threads in the head, so had to drill it out and tap it for the next size,
all of which works okay.
Matthew Wilder wrote:
> Hi,
> So in between welding in rust holes and letting fiberglass dry I've
> gotten the motor on my TR4a stripped down to the block. The motor shop
> wants the bearings and any plugs out which I was planning on doing
> anyways before boiling out the block, but there's a plug in the front of
> the block where the oil gally hole was drilled through. Will boiling out
> the block hurt this? Can I also have the head or the crank done?
>
> Thanks,
>
> Matt Wilder
> '67 TR4a E-prepared Solo 2
--
TR6 -- 29 years old
TR4 -- 39 years old
uncle jack -- 49 and holding
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