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Ironhead Sportster Motorcycle Talk (1957-1985) For all those that wanna talk about Ironhead Sportster Motorcycles

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  #1  
Old 2 Weeks Ago
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Default stroker pistons found

s&s 3500
trw 494-99 are cast inside dome

3" bore, + .010 on top of dome

these are nos, have pins, alum plugs are missing for one, other has both
no packaging
no rings

just thought might be some interest here in these
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DM Sent....
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^^^ responded

and to any others interested, i have no idea what to a$k for them
open to offers

will get pics later tday
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https://ibb.co/qkPW2C5
https://ibb.co/kHJJmxV
https://ibb.co/bP4gh4M
https://ibb.co/ssmgJvV
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IIRC S&S used the same piston for several different strokes: shortest has loose quench, next is better, longest needs stroker plate.
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couldnt google up any info on em
thought someone here might know
likely stock bore 900 jugs might b hard to find too
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Adds about 150cc with 4"9/16 KH crank or 4"5/8 S&S crank...

Needs a bit of relieving at rod notches on cases/cylinders and, as always, check rods not hitting each other at BDC...

Patrick
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