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AC puller View Drop Down
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Joined: 24 Oct 2015
Location: Marble Pa
Points: 68 		Post Options Post Options   Thanks (0) Thanks(0)   Quote AC puller Quote  Post ReplyReply Direct Link To This Post Topic: stroke
    Posted: 17 Dec 2015 at 6:58pm
How far can you offset grind a wd45 crankshaft and what stroke would that be?
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DrAllis View Drop Down
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Joined: 12 Sep 2009
Points: 20494 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 17 Dec 2015 at 7:02pm
If you use Buda (230-262) connecting rods, your stroke will be 4.875". They are 7.375" c to c length versus 7.500" for a stock gas rod.
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Gary in da UP View Drop Down
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Joined: 13 Sep 2009
Location: EUP of Mi.
Points: 1885 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Gary in da UP Quote  Post ReplyReply Direct Link To This Post Posted: 17 Dec 2015 at 7:20pm
Originally posted by DrAllis DrAllis wrote:

If you use Buda (230-262) connecting rods, your stroke will be 4.875". They are 7.375" c to c length versus 7.500" for a stock gas rod.

Connecting rod length has nothing to do with stroke. There are only two ways to increase an engines displacement, an over bore with larger diameter pistons, or lengthen the crankshaft throw.
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AaronSEIA View Drop Down
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Joined: 11 Sep 2009
Location: Mt Pleasant, IA
Points: 2551 		Post Options Post Options   Thanks (0) Thanks(0)   Quote AaronSEIA Quote  Post ReplyReply Direct Link To This Post Posted: 17 Dec 2015 at 7:26pm
Maybe the good Dr meant to say offset grind and use the Budda rods.
AaronSEIA
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wi50 View Drop Down
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Joined: 24 Sep 2010
Location: weegieland
Points: 1010 		Post Options Post Options   Thanks (0) Thanks(0)   Quote wi50 Quote  Post ReplyReply Direct Link To This Post Posted: 17 Dec 2015 at 8:12pm
I have a set of Hercules rods that are 8.000" center to center and use a 1.998" crankpin (same as buds). I also have new bearings for them. Would sell the package if someone wants them.
"see what happens when you have no practical experience doing something...... you end up playing with calculators and looking stupid on the internet"
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DrAllis View Drop Down
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Joined: 12 Sep 2009
Points: 20494 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 17 Dec 2015 at 8:31pm
The connecting rod length plays a pretty big part in compression distance of the pistons you choose you use. That was the point I was trying to make with the Buda rods being 1/8" shorter than OEM rods. I'm quite aware that the conn rod length having absolutely nothing to do with actual crankshaft stroke.
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