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jan bogert · 10-21-2012, 07:46 AM

i hear some guys on here have ran thier flathead motors, with just straight exhaust, no mufflers. doesn't that hurt the motor without back pressure? JAN.

10-21-2012, 07:46 AM	#1
jan bogert Senior Member Join Date: Nov 2011 Location: whitehall pa. Posts: 439	flathead exhaust i hear some guys on here have ran thier flathead motors, with just straight exhaust, no mufflers. doesn't that hurt the motor without back pressure? JAN.