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  1. Yoyodyne

    .040 u/s rod bearings for 32-36 flanged

    Have 2 pairs of bearing shells, for 2 rod throws, with flanges. .040 undersize journal dia. $100 for all four plus shipping by USPS or UPS.
  2. Yoyodyne

    Hershey Vendors thread

    AACA has a private page on facebook for vendors and shoppers to post what they are selling and looking for, hoping to connect both parties. https://www.facebook.com/groups/1509805246443697/?hoisted_section_header_type=recently_seen&multi_permalinks=1521480478609507 Can we do that here? I'll...
  3. Yoyodyne

    21 stud deck height, gasket thickness, etc. questions.

    I'm building a 21 stud, the block is ready for finish machining. Stock stroke, flat top pistons and heads. I'm trying to optimize the head to piston clearance at .040". The block deck is 10.442. The piston compression height is 1.534". With the 3.75 stroke and 7' rod that gives me a...
  4. Yoyodyne

    Errratic ammeter issue

    On my '26, the Ammeter sometimes shows what I expect, sometimes it shows no real charge or discharge when I expect to see one, like after starting, or when turning the lights on and off. The generator seems to be charging correctly. Is this a known failure mode of the ammeter, to intermittently...
  5. Yoyodyne

    L-100 cam in a 221

    I've been forced to rethink the motor I've been building and will start over with a 36LB block with maybe .030 overbore and stock stroke. I'll be using stock 36 aluminum heads. I plan to optimize the CR with .040 piston to head clearance and milling the heads. I have a Fenton 2 carb manifold and...
  6. Yoyodyne

    Oversize OD main bearings for 37 21 stud block

    The very last check I made before taking my oh so carefully cleaned tested and prepared 37 block to be bored was to bore gage the mains to be sure I had the correct main caps installed. In the process with the aid of searches here on the Barn I discovered that the main bores are .015" oversize...
  7. Yoyodyne

    I found a crack in an odd place while pressure testing

    The crack is between the forward exhaust port and the water pump mount on the passenger side of a 37 block on the outside of the block. The opposite bank seems tight, it has been holding 25 lbs for a day and a half. this side leaks down to zero in a half hour. I haven't found any other leaks...
  8. Yoyodyne

    Why the switch to domed pistons in 36-37?

    Did Ford announce the switch to domed pistons as an improvement, and did they say what was better about them? They continued until the end of flathead production through several other major revamps of the engine, and the heads had to be more difficult to make, so it seems they saw a clear reason...
  9. Yoyodyne

    Lathe with 3 Ford transmissions in Iowa

    I've seen all sorts of transmission lashups for powering old lineshaft machines. This one caught my eye because it was done well and has 3 transmissions in series. Thought this would be interesting here. Can you identify the transmissions? It's in Iowa, and can be had for the removal. Here's a...
  10. Yoyodyne

    1935-1938 brake shoes question, how to ID?

    I've seen discussion here about shoes for these years, I see comments that 35-36 are different from 37-38, and some comments that they are all the same. I see shoes advertised for 35-38, and some for 37-38. Searching here and googling hasn't been conclusive on this for me. What do I need to get...
  11. Yoyodyne

    Early rod bearings

    I have 3 pairs of Federal Mogul 1938-42 .030 U/S rod bearings, and 1 pair of .020 U/S bearings, $20 per pair or $75 for all. I also have 2 pairs of .040 U/S 1932-36 flanged rod bearings, $100.00 for both pairs.
  12. Yoyodyne

    21 Stud block and crankshaft

    Have a good '32-'36 crankshaft, will clean up at .020. $150.00 Also have a nice 1935-36 babbitt block (not LB). Came from a beautifully running engine when the center main failed. Didn't leak water or overheat, it should check ok but I haven't cleaned and magnafluxed it yet. All cylinders are...
  13. Yoyodyne

    What is this early in head pump w/double flange pulley for?

    This came to me on a motor that was in a 36 big truck. I doubt it was original to the truck, because the motor was a 37 block and a mess of mismatched parts cobbled together. I didn't get to see how the fan belt(s) was (were) installed, but I think I remember a double row crank pulley as well...
  14. Yoyodyne

    21 stud bolt pattern - anyone have it?

    I'm going to make a an aluminum honing plate for my 21 stud block. Does anyone have a drawing or locations for the stud holes? If you can help me out you'll save me a tremendous amount of time reverse engineering used parts.
  15. Yoyodyne

    Hershey - 1939-1940 block, Sunnen valve tool

    Space GBL-35 Clean 1939-40 block, bored to 3.188". $200. Sunnen valve removal and installation tools, $100 Might have more, haven't loaded yet. John 717-606-2168 cell
  16. Yoyodyne

    Water jacket - How clean is clean enough?

    I finally found a good 21 stud block to build and am cleaning it up to prepare for machining. Here are 2 photos of the interior of the water jackets. Is there anything to be gained in cooling by cleaning the last of the rust from the surfaces? I imagine that if I do, it will just rust again...
  17. Yoyodyne

    Flathead Facts - what heads are these?

    A friend saw these heads on the cover of JWL's book, and wants to know who made them. He's built several hot flatheads including 2 blown engines and said having water outlets like these would save him a lot of work. What can you tell us? BTW John, thanks for the great book.
  18. Yoyodyne

    Head bolts in an early block?

    While trying to figure out the exact thread specs on the head stud holes and studs on my 37 blocks, I noticed that a standard grade 5 bolt fit the threaded hole nicely. Then the thought occurred to me to just use bolts like the late motors. I'm figuring on using Orosco Eddie Meyer heads which...
  19. Yoyodyne

    1937-1938 21 stud block

    Need a good useable block, I'm on my 3rd cracked block so far. Prefer within 200 miles. Have a NOS 38-41 Merc block to trade if interested. John Magee 717-464-2800 days jmagee at comcast dot net
  20. Yoyodyne

    1936-38 crankshaft w/rod bearings

    SOLD 1936-38 crankshaft w/rod bearings Crank glassbeaded clean, magnafluxed OK, all journals are standard except one rod journal has been ground .030. 4 pairs of .040 Federal Mogul rod bearings included. Can deliver to Hershey 717-464-28003 jmagee at comcast.net
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