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crankshaft casting number???
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OrangeFever View Drop Down
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Joined: 25 Apr 2010
Location: Eastern Iowa
Points: 122 		Post Options Post Options   Thanks (0) Thanks(0)   Quote OrangeFever Quote  Post ReplyReply Direct Link To This Post Topic: crankshaft casting number???
    Posted: 29 Apr 2010 at 6:19pm
Anyone with some insight please. I have a wd45 block with a crankshaft casting number of 226231-L. I believe it is a 4.5" stroke but I have atleast .5" distance at TDC before the piston would be at max stroke of the cylinder. Thats also with an A&I Products flattop piston.  
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mlpankey View Drop Down
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Joined: 13 Sep 2009
Location: Vols country
Points: 4580 		Post Options Post Options   Thanks (0) Thanks(0)   Quote mlpankey Quote  Post ReplyReply Direct Link To This Post Posted: 29 Apr 2010 at 6:54pm
that sounds right. whats the question?
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OrangeFever View Drop Down
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Joined: 25 Apr 2010
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Points: 122 		Post Options Post Options   Thanks (0) Thanks(0)   Quote OrangeFever Quote  Post ReplyReply Direct Link To This Post Posted: 29 Apr 2010 at 7:19pm
If its a 4" stroke or 4.5" stroke by telling the distance of the piston traveling. 
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Joined: 13 Sep 2009
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Points: 4580 		Post Options Post Options   Thanks (0) Thanks(0)   Quote mlpankey Quote  Post ReplyReply Direct Link To This Post Posted: 29 Apr 2010 at 7:24pm
the number on the crank is 226 that pretty much tells its a 4.5 stoke crank . but yes you can measure the pistons travel to . If you have a 4.5 stroke 4 inch bore and youre flat top piston is just 1/2 inch below deck at tdc . you will have a 9.2.1 comp. ratio.
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CTuckerNWIL View Drop Down
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Joined: 11 Sep 2009
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Points: 22823 		Post Options Post Options   Thanks (0) Thanks(0)   Quote CTuckerNWIL Quote  Post ReplyReply Direct Link To This Post Posted: 29 Apr 2010 at 7:27pm
The 226 in the part numbers probably denotes a 226 cu in which would be  a 4.5 stroke crank. The 4 in stroke engine was a 201cu in. The head is flat so there has to be some space left at the top of the stoke.
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Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF
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OrangeFever View Drop Down
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Joined: 25 Apr 2010
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Points: 122 		Post Options Post Options   Thanks (0) Thanks(0)   Quote OrangeFever Quote  Post ReplyReply Direct Link To This Post Posted: 29 Apr 2010 at 7:27pm
I have 4.125 flat top pistons. what would that ratio be about. See I got this wd45 from my grandfather and have the engine together but  I always enjoy learning new info. Thank you.
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Joined: 13 Sep 2009
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Points: 4580 		Post Options Post Options   Thanks (0) Thanks(0)   Quote mlpankey Quote  Post ReplyReply Direct Link To This Post Posted: 29 Apr 2010 at 7:32pm
If its trully 1/2 inch down from the top of the deck at tdc with a 4.125 bore .042 figured for gasket crush 4.25 gasket bore with a 4.5 stroke ,flat top  piston with no valve reliefs the cr would be 9.26.1
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Points: 22823 		Post Options Post Options   Thanks (0) Thanks(0)   Quote CTuckerNWIL Quote  Post ReplyReply Direct Link To This Post Posted: 29 Apr 2010 at 7:49pm



Edited by CTuckerNWIL - 29 Apr 2010 at 7:49pm
http://www.ae-ta.com
Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF
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