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05-07-2021, 06:31 PM | #1 |
Senior Member
Join Date: May 2010
Location: Ohio
Posts: 819
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Model A Counterbalanced Crankshaft
I know vendors today manufacture counterbalanced crankshafts for Model A's (SCAT & Burlington). I also know that many vendors today modify non-balanced cranks into balanced cranks by welding on weights, straightening the cranks and regrinding.
I also know of the Model B cranks with integral counterweights, plus the BB cranks with swedged-on counterweights. I also know that some have taken B counterweighted cranks and turned the journals down to work in A engines. But did Ford ever produce a forged one-piece crankshaft with counterweights for a Model A engine? Did some vendor (other than SCAT or Burlington) make a forged one-piece crankshaft with counterweights for a Model A engine in the years after the Model A? Who? Next question: If such an animal exists (one-piece crankshaft with counterweights for a Model A journal size), what should one look for to see if the crankshaft is still useful? Thanks. |
05-08-2021, 03:51 AM | #2 | |
Senior Member
Join Date: May 2010
Location: Eastern Tennessee
Posts: 11,513
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Re: Model A Counterbalanced Crankshaft
Quote:
I recall seeing a crankshaft many years ago (-like when I was in my preteen years) that was said to be an old CW crankshaft. I can remember dad & I discussing it years later and our speculation was that it was a B crank that had the journals ground to A sizes. As with any crankshaft, initially see if passes the ring test. Next mic the journal sizes to make sure it can be used. Then have it 'wet-magged' to check for cracks. In all of this, consider your overall investment and determine if using an old crankshaft is prudent. In the grand scheme of things, a SCAT crankshaft is not that much more than a Burlington, and SCAT will stand behind their products. Likely because the machine work and the Q/C are done here stateside. Likewise, I have experienced two engine failures with a Burlington crankshaft due to the Burlington journals not properly heat treated. I was 'on my own' with both of those as there is no warranty expressed or implied with that crank. For that reason alone, I will never install another Burlington crank. |
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05-08-2021, 05:59 AM | #3 |
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Join Date: May 2010
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Re: Model A Counterbalanced Crankshaft
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John in rainy Somerset County England . |
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