The Ford Barn

kenparker · 03-31-2019, 08:02 AM

Old31. When I was building kits I considered installing a bottom drain plug a time or two. Electd not to due to the thickness of the casting on the bottom and the posssibility of not enough thickness for sufficient threads to stop any chance of leaking. Also, if the original design, with no drain plug, was good enough for a 1980's truck and the abuse (speed, towing, miles) they were put thru n the 80's and 90's - I took one out of a truck at a wrecking yard that had over 200,000 miles - a drain plug was not needed for a Model A and the relative easy way we drive them today.

03-31-2019, 08:02 AM	#34
kenparker Senior Member Join Date: May 2010 Location: Van, Texas Posts: 1,122	Re: Ford 150 OD Transmission install in 31 Roadster Old31. When I was building kits I considered installing a bottom drain plug a time or two. Electd not to due to the thickness of the casting on the bottom and the posssibility of not enough thickness for sufficient threads to stop any chance of leaking. Also, if the original design, with no drain plug, was good enough for a 1980's truck and the abuse (speed, towing, miles) they were put thru n the 80's and 90's - I took one out of a truck at a wrecking yard that had over 200,000 miles - a drain plug was not needed for a Model A and the relative easy way we drive them today.