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4.5" Crank in a 201 block

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WF owner View Drop Down
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Joined: 12 May 2013
Location: Bombay NY
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    Posted: 21 Oct 2013 at 4:10pm
What is involved in putting a 4.5" stroke crankshaft (from a WD45) in a 201 engine. Is it a simple bolt in, or is there other things that have to be changed or machined to make it fit?
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DrAllis View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 21 Oct 2013 at 4:23pm
Crankshaft bolts right in. Pistons and sleeves will probably need to be replaced due to higher piston travel. This causes higher compression AND if your sleeves are worn and have a ring ridge, you can't shove the pistons up thru that ring ridge without breaking rings, piston lands, etc.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote WF owner Quote  Post ReplyReply Direct Link To This Post Posted: 21 Oct 2013 at 7:34pm
I plan to replace sleeves and pistons. I would like to go the 4.125 sleeves and I was thinking of 170 pistons and maybe a 170 cam. What other issues will I need to be aware of?
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mike a View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote mike a Quote  Post ReplyReply Direct Link To This Post Posted: 21 Oct 2013 at 10:17pm
175 cam is what you need ,not 170 cam.
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