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Discussion Forum

Re: WD vs. WD-45

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06-29-2002 19:26:24

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nathan, i believe the 45 had a longer throw on the cranshaft, and shorter rods. this made the piston stroke 1/2 inch longer, but the block is virtually the same. thats why the guys say keep the wd rods and crank matched up together and the 45 the same. do not interchange or you will either hit the head, or have very little compression.

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Allis Puller

06-30-2002 04:15:37

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 Re: Re: WD vs. WD-45 in reply to steve, 06-29-2002 19:26:24  
This is in correct, the 1/2" difference of stroke only brings the piston up half, or 1/4". I put put a WD45 crank in, used the WD same rods, and went to 175 pistons. The 175 piston are also another 1/4" taller and this is what gave them their h.p. by increasing the compression. My pistons are still a 1/4" from the top of the block and its got plenty of room for the valves to open. Stock the pistons are 3/4" away. But I strongly suggest not using the 175 pistons in a work tractor for I'm affraid it won't hold together, but a buddy of mine just put in the 45 crank and his runs like a champ.

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