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XL FORUM TEAM MEMBER
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Join Date: Jun 2011
Location: On a farm
Posts: 6,459 Sportster/Buell Model: XL77.2R Sportster/Buell Year: 2006
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Weird that the new technology still make it go back to Iron Head, those piston almost look like IH ones. LOL.
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1 Day Ago
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XL FORUM TEAM MEMBER
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Join Date: May 2009
Location: Pepperell, MA
Posts: 2,797 Sportster/Buell Model: XLH 1200 Sportster/Buell Year: 2003 Other Motorcycle Model: 1984 KX 125
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Quote:
Originally Posted by rejeanprimeau
Weird that the new technology still make it go back to Iron Head, those piston almost look like IH ones. LOL.
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Not too weird.... You cannot make compression in a 70cc combustion chamber with a flat top piston. Especially with the smallish diameter of our pistons. A SBC or SBF has a 4.00 bore and 57 to 62 cc chambers that net 9.0 to 10.0 compression... At 3.565 it even more difficult to make more than that with a minor dome.
Sent from my LM-V405 using Tapatalk
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