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04-08-2011, 11:30 AM | #21 |
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Re: Maximum Bore + Stroke
4" bore with a 1/4" longer stroke + 225 inches, with a 4 3/8" stroke it = 239 inches. The difference in torque is amazing!
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04-08-2011, 03:31 PM | #22 | |
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Re: Maximum Bore + Stroke
Quote:
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04-08-2011, 05:06 PM | #23 |
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Location: Camarillo, CA and Pine Grove, CA
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Re: Maximum Bore + Stroke
I was looking at the new block/crank made by Burtz. They offset the location of the rod caps so the rod wouldn't hit the cam. Very close tolerances. How close do the rods come to the cam in a stock block with a stroker crank?
http://www.modelaengine.com/12.html
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1921 Runabout 1930 Tudor Early 1930 AA Speed costs money. How fast do you want to go? |
04-08-2011, 09:15 PM | #24 |
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Re: Maximum Bore + Stroke
Yes, I think a bigger stroke would help the low RPM power, just where you can use it on the road. No need to rev it up and strain anything. I guess this is pretty much what Bill already said.
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04-09-2011, 10:16 AM | #25 |
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Re: Maximum Bore + Stroke
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04-09-2011, 03:02 PM | #26 | |
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Re: Maximum Bore + Stroke
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Quote:
I was referring to the 3/8" stroke in my statment. Sorry I should have made that clearer. You are right the increased stroke will give you better torque. And as long as you don't go much more then 3/16" you will still have a motor that will hold up to the rigors of touring. In my mind the cost of stroking an engine ($1,500 - $2,000) is a little much to add to your touring engine build cost . |
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04-09-2011, 07:11 PM | #27 |
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Re: Maximum Bore + Stroke
If your going to spend that kind of money, a swap to a pinto or chev II with a 5 speed is what i woud do (or a flathead). I know , it won't be 'original" then.
Paul in CT |
04-09-2011, 11:35 PM | #28 |
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Re: Maximum Bore + Stroke
Don't want to open up that can of worms. My choice is to keep the original engine. I like the honest simplicity of the Model A. Just looking at some concealable "tweaks".
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04-10-2011, 12:13 AM | #29 |
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Re: Maximum Bore + Stroke
I agree with Vince and George that you already have plenty of stroke, and adding to it won't increase the cubic inches by much, even if it does give you some more torque AT LOWER RPM's.
I'd use a H/C head and counterweighted crank, and if you want more speed use a 3.54 or 3.27 rear end. |
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