I has changed my crankshaft ideas as I had a Merc 4" and 8BA rods and new bearings and 1/8" over Ross pistons ( It's sold )
My new Merc 41 block is also now at 3.3125" but need a hone and custom pistons or if I dare bore it more.
I could install 8 sleeves but as I heard this block's will 'dance'.
-Personally when I see all this cast iron I has hard see why really.
Well good quality nickel sleeves and 1 mm rings would be nice and then one know its no pinnhole and even thickness etc, but if its a bad idea its a bad idea based on real life experiance ( as I hear ) but I has zero experiance on this engines.
But the crank will be a 1939 3.75" stroke.
-Why 39, well I heard they was a tad lighter, but I has hard believe that, as I think the weight was the same on all 59A cranks.
I heard several case that 'all' 39 had labyrith seal, but I also heard some had the rope seal.
I has looked on some ( long nose and big main/rod ) but I don't know if a 39 but they has a sling.
I might has a stroked 59A crank in Texas but so far I has no info on what end is and surface and how that crank is grinded.
I can grind a crank here myself but I rather pay freight for that crank than has my nose for a day or two in the Berco grinder, plus it was some years ago I grinded my last crank.
I has bought NOS 21A rods and source has bearings to me at both std and 010.
I guess I should not use the std sling, or ?
Shore, I will find a rope seal 59A crank, so better use that or wait on the Texas crank info.
But if one go on a sling I know there are adapters to use a rope.
Will that be a good idea or a bad ?
Info on that ;
1941 was a transition year on the rear oil seals. 1932-40 and some 41 crankshafts were fitted with labrinth seals ( slinger)
Some 1941 cranks and all 42-53 cranks were fitted with rope seals.
You can set up the 1939-41 blocks for ropes by using the matching seal retainers
(19B-6336 lower retainer and 91A-6335 upper retainer) instead of the slinger design retainers, plus the correct rope seals.
No specs on the weights of the 1942-48 crankshafts, but the old spec on the 1939 crankshaft (Merc type) was 69 lbs.
My new Merc 41 block is also now at 3.3125" but need a hone and custom pistons or if I dare bore it more.
I could install 8 sleeves but as I heard this block's will 'dance'.
-Personally when I see all this cast iron I has hard see why really.
Well good quality nickel sleeves and 1 mm rings would be nice and then one know its no pinnhole and even thickness etc, but if its a bad idea its a bad idea based on real life experiance ( as I hear ) but I has zero experiance on this engines.
But the crank will be a 1939 3.75" stroke.
-Why 39, well I heard they was a tad lighter, but I has hard believe that, as I think the weight was the same on all 59A cranks.
I heard several case that 'all' 39 had labyrith seal, but I also heard some had the rope seal.
I has looked on some ( long nose and big main/rod ) but I don't know if a 39 but they has a sling.
I might has a stroked 59A crank in Texas but so far I has no info on what end is and surface and how that crank is grinded.
I can grind a crank here myself but I rather pay freight for that crank than has my nose for a day or two in the Berco grinder, plus it was some years ago I grinded my last crank.
I has bought NOS 21A rods and source has bearings to me at both std and 010.
I guess I should not use the std sling, or ?
Shore, I will find a rope seal 59A crank, so better use that or wait on the Texas crank info.
But if one go on a sling I know there are adapters to use a rope.
Will that be a good idea or a bad ?
Info on that ;
1941 was a transition year on the rear oil seals. 1932-40 and some 41 crankshafts were fitted with labrinth seals ( slinger)
Some 1941 cranks and all 42-53 cranks were fitted with rope seals.
You can set up the 1939-41 blocks for ropes by using the matching seal retainers
(19B-6336 lower retainer and 91A-6335 upper retainer) instead of the slinger design retainers, plus the correct rope seals.
No specs on the weights of the 1942-48 crankshafts, but the old spec on the 1939 crankshaft (Merc type) was 69 lbs.
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