R-3 OIL DRAIN PLUG

[00RACER]

WHEN STUDEBAKER MADE THE R-3 OIL PANS, WHAT THREAD SIZE DID THEY USE FOR THE DRAIN PLUG?
THANKS
PAUL LAUSCH

[StudeRich]

That's a pretty obscure question if I ever heard one, Lol!

I checked the Jet Thrust section of the Chassis Parts Catalog, but since there are NO R3 & R4 parts shown, that got me nowhere.

That only leaves, the facts we know, there were only two drain plug sizes ever used, the '47-'57 large one and the '58-'64 small 5/8" NF one.

I would think they started with the old '51-'55 6 quart pan and added the baffles and breather hole, which [u]COULD</u> mean that the plug is the large older type.

So much for conjecture! Does ANYONE actually have a R3 pan or an R3 Engine to check?

[Laemmle]

Same p/n as r-1 & r-2 pan plugs.

[Bellingham Studenut]

Rich, if you want to stop over this weekend, we can check a couple of those funny red B engines to confirm it.

James

The Bell Collection
Bellingham, WA.

[Alan]

It would be best to have a picture of what you have. Since 1966 I have been the only one making R style pans, first for Joe G, then since 74 for Lional stone. There are a lot of R3-R4 pans floating around. If the plug comes out the rear of the bottom of the pan at a 45 degree angle it could be a 5/8" X 18 or a 3/8" taper pipe.

[WCP]

The R3 pan was simply an R1/2 pan with an insert welded in to drop the bottom - hence same drain plug.

[R3 challenger]

The oil pan and drain plug on the R3 in the Plain Brown Wrapper are the original parts that Paxton included with the R3 engine when I bought it in 1964; the drain plug is the same standard Studebaker V8 item that would have been on any 1963/64 Stude V8...only it's painted red. WCP is right on the construction of the pan.

George

george krem