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d17 wd45 crankshaft
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HudCo View Drop Down
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Joined: 29 Jan 2013
Location: Plymouth Utah
Points: 3542 		Post Options Post Options   Thanks (0) Thanks(0)   Quote HudCo Quote  Post ReplyReply Direct Link To This Post Topic: d17 wd45 crankshaft
    Posted: 25 Oct 2024 at 10:32am
is the crankshaft for a d17 sn9850 the same a wd 45 crankshaft ? 
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DrAllis View Drop Down
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Joined: 12 Sep 2009
Points: 20522 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 25 Oct 2024 at 11:13am
NO at any serial number!! WC-WF-WD-WD45 engines have 2 1/2" diameter main bearing journals. This is the W-201 and W-226 engine series. The D17-170-175-E and E-3 combines have 3" diameter main bearing journals. This is the G-226 engine series. Blocks and cranks are DIFFERENT.

Edited by DrAllis - 25 Oct 2024 at 3:08pm
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Joined: 29 Jan 2013
Location: Plymouth Utah
Points: 3542 		Post Options Post Options   Thanks (0) Thanks(0)   Quote HudCo Quote  Post ReplyReply Direct Link To This Post Posted: 25 Oct 2024 at 7:52pm
is the series 1 and series 4 the same ? what is the part number for series 4 if it is differant 
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Points: 20522 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 25 Oct 2024 at 8:08pm
Series 1 and 2 and 3 were all the same. Series 4 and 170 and 175 have  "tuff-trided" (nitrided) crankshaft journals, which make them harder on the surface to resist wear. You cannot tell the difference by looking at one, as a new crank fits right in an old engine.
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Joined: 29 Jan 2013
Location: Plymouth Utah
Points: 3542 		Post Options Post Options   Thanks (0) Thanks(0)   Quote HudCo Quote  Post ReplyReply Direct Link To This Post Posted: 25 Oct 2024 at 8:22pm
what is the part number for the series 4  when i look it up it shows a part number for a kit.  it will easyer if i have the number off the crank for searching.     maybe i missed somthing on the parts book.      i need to start looking for another crank for the puller   mine has been at the machine shop for almost a year.    i have a brand new wd45 crank still in the box when was going to biuld a 201 block for the puller when scored the smashed series 4 know really want the series 4 engine in the puller  
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Joined: 12 Sep 2009
Points: 20522 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 25 Oct 2024 at 10:22pm
I've looked at three crankshafts for a G-226 in my basement. All three have a casting number of 229022.

Edited by DrAllis - 25 Oct 2024 at 10:32pm
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SteveM C/IL View Drop Down
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Joined: 12 Sep 2009
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Points: 8241 		Post Options Post Options   Thanks (0) Thanks(0)   Quote SteveM C/IL Quote  Post ReplyReply Direct Link To This Post Posted: 26 Oct 2024 at 8:55am
I'm guessing these original cranks are forged? My 45 was. It now has an Asian cast crank.
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DrAllis View Drop Down
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Joined: 12 Sep 2009
Points: 20522 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 26 Oct 2024 at 9:00am
YUP. A red/white hot chunk of good quality steel/iron that is hammered into 3 or 4 step dies to achieve the size and shape they wanted. There are Utube videos on crankshaft forging. Amazing how man has mastered some manufacturing processes to the same result hundreds or thousands of times per day.
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SteveM C/IL View Drop Down
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Joined: 12 Sep 2009
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Points: 8241 		Post Options Post Options   Thanks (0) Thanks(0)   Quote SteveM C/IL Quote  Post ReplyReply Direct Link To This Post Posted: 26 Oct 2024 at 9:05am
I had a course in college called "manufacturing processes".  50's film forging a 6cyl crank. Amazing how they flipped and turned that red hot chunk and beat it into shape!
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Points: 20522 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 26 Oct 2024 at 9:18am
After watching one of those cranks being forged, it would explain how once in a great while one breaks after years of service. Surely there is an occasional flaw of dirt or debris in the metal that later on shows up as a fracture.
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Joined: 08 May 2020
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Points: 783 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Les Kerf Quote  Post ReplyReply Direct Link To This Post Posted: 26 Oct 2024 at 10:17am
Originally posted by DrAllis DrAllis wrote:

Series 1 and 2 and 3 were all the same. Series 4 and 170 and 175 have  "tuff-trided" (nitrided) crankshaft journals, which make them harder on the surface to resist wear. You cannot tell the difference by looking at one, as a new crank fits right in an old engine.

I presume that grinding the journals undersize pretty much wipes out the nitriding?
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Joined: 12 Sep 2009
Points: 20522 		Post Options Post Options   Thanks (1) Thanks(1)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 26 Oct 2024 at 4:35pm
Yes. It is only .003" thick I am told.
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