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Old 09-12-2003, 08:12 PM   #1 (permalink)
FNG :)
 
Join Date: Aug 2003
Location: Silsbee, Texas
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loosecannon39
sporty upgrade
in 72, when the sporty was upgraded from 55 in, to 61 in, was this a bolt on for earlier models??? was it bore only , or stroke, or both, and is machine work required???


thanks loads,

Dan
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Old 09-13-2003, 05:48 PM   #2 (permalink)
IronButt
 
Join Date: Mar 2003
Location: Iowa
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HDSmurph
Dan I think it was bore+stroke. They even had to redo the engine cases, because the juggs slide down into them.
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Old 09-13-2003, 06:17 PM   #3 (permalink)
IronButt
 
Join Date: Mar 2003
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HDSmurph
K model had 2.75 bore.
57-71 3 inch bore.
72-85 3.148 bore.
all had same stroke 3.8125.

If you want more power stroke it!
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Old 09-13-2003, 10:06 PM   #4 (permalink)
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loosecannon39
thanks guys


Dan
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Old 09-14-2003, 09:09 AM   #5 (permalink)
IronButt
 
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Zeus
Stroke an iron sportster? Can you say reliability?
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