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Old Apr 21, 2017 | 11:36 AM
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Hi guys. New to the forum. Just bought a project chopper that is for a dyna. I believe it is a 97-98 but my question is, all are dyna engines the same size? Physically that is. I know there are different displacements. But just trying to find what engine i can put in this beast. Thanks

 
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Old Apr 21, 2017 | 02:59 PM
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To be honest before I would be looking at an engine, I would be asking myself, why is there a welded Muffler baffler in the downtube, I cannot see how this baffler can support the weight of a harley engine at breaking speed.
 
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Old Apr 21, 2017 | 03:01 PM
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Welcome to the forums from Ontario Canada
 
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Old Apr 21, 2017 | 03:07 PM
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Thats not a baffle. Its expanded metal wrapped around the tube and welded. That theme is everywhere on the frame.
 
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Old Apr 21, 2017 | 03:10 PM
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Originally Posted by Grump14
Thats not a baffle. Its expanded metal wrapped around the tube and welded. That theme is everywhere on the frame.
Ah OK optical illusion looked like the baffles in my mufflers, to answer engine question, best thing to do is go and measure some old rides, and you can see what fits.
 
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Old Apr 21, 2017 | 03:24 PM
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Probably a 4 speed Evo. Not sure of a Twink will (easily) physically interchange with an Evo or not...or if it will bolt up (easily) to a 4 speed.
 
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Old Apr 21, 2017 | 03:59 PM
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I'm wondering because my friends streetbob has the same engine mounts and primary cover as this came with. His is a 103ci.
 
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Old Apr 21, 2017 | 04:33 PM
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A Google search of the part number stamped on the frame yielded these results, if helpful (which both seem to be listings for the same item):

http://pinwallcycle.com/product_info...ucts_id=606404

http://www.ebay.com/itm/1997-1998-Ha...item4893e908b5

Yours seems to be very modified, as you probably knew...
 
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Old Apr 21, 2017 | 04:44 PM
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Ya, i found that other frame last night. Best i could find was it was for a 97-98 year range. Just trying to see if i could put a newer dyna engine. I'm new to harleys, I'm a metric guy for the most part. But i love choppers so now I'm building a harley
 
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Old Apr 21, 2017 | 10:25 PM
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If the frame was designed for an EVO motor, your mount locations are going to be slightly different for Twin Cam.. not that you couldn't probably adapt something, or cut the front mount out, and weld in a new one.
 
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