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Michael Crowe 
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Joined: 11 Sep 2009
Location: Kansas City
Points: 1748
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 Topic: are D17 and WD45 distributors the same, interchan?
Posted: 20 hours 4 minutes ago at 7:25pm |
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just need to know the answer to that question. thanks michael
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den/southern illinoi
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Joined: 11 Sep 2009
Location: Sparta, Illinoi
Points: 2092
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Posted: 7 hours 4 minutes ago at 8:25am |
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Had a Series 1 D 17 with power steering which of course works thru the distributor. Sold the distributor/power steering off the D 17. Installed a WD 45 distributor so I say they are basically the same.
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Own 4 wheel 20, 5020 and associated equipment and 1 electric forklift. Also a 720 garden tractor, 720 Diesel. 620 and soon a 616 garden tractor.
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SteveM C/IL
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Joined: 12 Sep 2009
Location: Shelbyville IL
Points: 8955
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Posted: 6 hours 43 minutes ago at 8:46am |
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I would bet they are but don't know. Sounds like Den maybe switched the drive housing and all and I can see that working. Sounds like you are talking just the distributor.
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DrAllis
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Joined: 12 Sep 2009
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Posted: 6 hours 36 minutes ago at 8:53am |
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I didn't get a chance to look this morning. Digging out from the snow was priority. The distributers will interchange, but I'm real sure the timing advance mechanisms are slightly different. The WD45 engine probably reaches full timing advance by 1400 RPM, which is rated speed. The D-17 engine reaches full advance by 1650 or 1700 RPM because that's where rated speed is on that engine. So, if you used a D-17 dist on a WD45 engine, full advance wouldn't occur quite soon enough, as high idle is 1700 RPM.
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SteveM C/IL
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Location: Shelbyville IL
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Posted: 6 hours 15 minutes ago at 9:14am |
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Interchangeability and sameness are two different things. I'm sure Doc nailed it
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Les Kerf
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Joined: 08 May 2020
Location: Idaho
Points: 1617
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Posted: 3 hours 2 minutes ago at 12:27pm |
I would want to know the complete curve characteristics: When does it begin advancing? When is it fully advanced?
Total amount it advances; ie 20, 25, 30... etc. degrees. Is the advance linear?
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DrAllis
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Posted: 2 hours 55 minutes ago at 12:34pm |
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WD-45's should have always been a total of 30 degrees advance from dead stopped to full throttle, hitting that full 30 degrees of advance by rated speed of 1400 RPM. Early D-17's would also have had a 30 degree advance, only peaking at 1650-1700 RPM. By the series 2 models, they had the engines timed at 25 degrees BTDC, so I assume they had to change the advance to those specs, instead of 30 degrees like the early D-17's..
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