mbstude Posted October 15, 2018 Share Posted October 15, 2018 We're getting things lined up to rebuild the engine in a '42 President coupe. We've found 3 Straight Eight crankshafts that we're trying to ID in hopes that one may be for this car. 2 of them have a forging/casting number of 189517 The other is 176524 Anyone happen to have any info on what these cranks fit? Also, any leads on where to get bearings, valves, or any other parts we may need for this car would be greatly appreciated. Thanks! Matt Link to comment Share on other sites More sharing options...
Gary_Ash Posted October 15, 2018 Share Posted October 15, 2018 Matt: The finish machined crankshaft is P/N 514773, used on 1935 Commanders and Presidents and on 1938-42 Presidents, according to the 1934-46 parts catalog. However, the 1929-40 parts catalog shows crankshaft 190818 used in 1935 and 1938-40. The 1936-37 Presidents used crankshaft part number 189517 - the two you have - don't know what was different. See the 1929-40 parts catalog. Have Andy Beckman check the drawing tree to see what the raw forging number would have been. The 176524 crankshaft you have is probably from about 1932. Dave Thibeault has cam bearings for these engines. The valve springs are P/N 188645 used on Commander 6's and Jet Thrust V8s. There must be some other valves that can be used, though your own Stephen Allen's website shows the 187169 inlet valve and 189820 exhaust valve in stock. Note that the original 1934-46 parts catalogs misprinted the exhaust valve number as 189120. Pistons can be supplied by Ross or Arias. I was told that crankshaft main bearings in non-standard sizes are NLA, but that old shells can be re-babbitted and line-bored to whatever dimension is needed. Read Ford Stoecker's article in Antique Studebaker Review, May-June 2000, about rebuilding his 1937 President engine. Link to comment Share on other sites More sharing options...
mbstude Posted October 17, 2018 Author Share Posted October 17, 2018 (edited) Hey Gary; thanks. We just received cam bearings from Dave. As far as the valves.. Exhaust valves are in repro, but we've only got 2 NOS intake valves in stock. What you're saying about bearings is on par with what we've discovered so far. The crankshaft in the car is usable/repairable, the car does currently run but we know it needs bearings. With something this scarce, having spare parts on hand before we even dive in can be a good thing. Edited October 17, 2018 by mbstude (see edit history) Link to comment Share on other sites More sharing options...
Spinneyhill Posted October 18, 2018 Share Posted October 18, 2018 Nice view down the garage! Link to comment Share on other sites More sharing options...
George Rohrbach Posted October 18, 2018 Share Posted October 18, 2018 Ah.....Iron Pistons! Link to comment Share on other sites More sharing options...
rbk Posted October 30, 2018 Share Posted October 30, 2018 The crankshaft balance will be different with the steel pistons. Link to comment Share on other sites More sharing options...
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