At 01:56 PM 1/12/2001 -0600, Rick Lindsay wrote:
>.... B-GT .... oil pan drain plug .... Someone please help by telling me
the size.
Well damn! I thought I had this one hands down, but thought I'd check one
of my MGA engines just to be sure. I was pretty certain it was 1/2-20 UNF
or SAE thread, but it is not. Upon careful measurement it apears to be
13-1.25 MM thread. Surprise!
This is the same thread used in the oil galley plug on the left side of the
engine block adjacent to the pressure relief valve cover, and the water
drain port on the right side of the block. I have been playing musical
chairs with these plugs for years. As a matter of habit I usually throw
away the water drain valve, because the drain port is always plugged and
the valve never works anyway. Since the thread depth for the water drain
port is rather shallow I use the short threaded plug from the oil port on
the other side of the block. Then since the oil port has a deeper thread,
I install there the oil drain plug from the oil pan. Then I install a
magnetic drain plug in the sump.
Learn sompthing new every day.
Barney Gaylord
1958 MGA with an attitude
http://www.ntsource.com/~barneymg
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