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WD45 piston difference

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David Maddux

12-27-2008 19:54:36




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I understand the 45 pistons ar concave as where the WD's are flat top. Other than that, is the height from wrist pin to top of piston the same?




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DanD

12-30-2008 15:28:46




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 Re: WD45 piston difference in reply to David Maddux, 12-27-2008 19:54:36  
JD Plowboy is correct. Remember that a WD 45 has a 1/2" longer stroke. Using the WD 45 pistons in a WD with the WD crankshaft will give poor performance because the compression ratio will be very low. Using WD pistons in a WD 45 engine will result in a very high compression ratio that I have been told requires premium gasoline and is appropriate only for short runs like in a tractor pull. Also makes it hard to start with a 6 volt system.

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jd plowboy

12-27-2008 19:56:16




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 Re: WD45 piston difference in reply to David Maddux, 12-27-2008 19:54:36  
they have different compression heights



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