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Discussion Forum

Re: Difference between Wd45 powercrator and 175 pistons?

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Another question for Agco puller

05-17-2002 14:09:52

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I've got the engine down right now, and before I dropped in the crank I measured from the piston to the top of the block and there was exactly 3/4" and now that I'm adding 1/2" of stroke I can't see where I could possibly fit 175 pistons in there. But I rebuilt this motor two summers ago and I put the 1/8 overbore with powercrator pistons, I ordered them from Temco and I looked them up in the book and its the same part# for WD45 and 175. How far down do the valves travel? You say 175 pistons are 9/32 taller, Maybe I already have the same ones your talking about. What do think about the whole situation?

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Agco puller

05-17-2002 14:35:19

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 Re: Re: Difference between Wd45 powercrator and 175 pistons? in reply to Another question for Agco puller, 05-17-2002 14:09:52  
Your adding 1/2 stroke but our piston is only going to come up to 1/4" so your still exactly 1/2" from top of deck. The 175 original piston was exactly 1/4" from the top. The throw is equal to half the stroke, so a 45 crank at 4-1/2" is 2-1/4" throw. A-C blocks use a 12-21/32" deck hight.
12.65625-7.500(rod length)-2.25(crank throw)-2.40625(piston compression height) will equal 1/2"
piston top to top of block. With the crater piston
that still about only 6.5:1 compression

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