Hello all, apologies for the delay, it's been a hectic week and it appears my 750 pan swap had to be undone before I could dry fit with the 1100 pan. so below is a further update of the mounted pipes on the bike:
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Conditions:
1. The #2 and #3 header pipes must move approx 1.5 inches
2. You must employ the 1100 pan. 750 pan swaps must be reversed as the #1 and #2 pre-collectors foul the pan.
3. # 2 header pipe touches the frame cradle rail. The Header mating surface must be ground down 2 mm to allow the inner of the two head mount bolts to be tightened, canting the pipe away from the frame cradle rail.
Observations:
1. Filter Clearance: lots of space between 2 and 3 header pipe or for side access in case fairings are removed
2. Pan Clearance: lots of clearance (3 inches) from pan.
a. Conditions: Cannot employ the 750 pan as it fouls the 1 and 2 pre collector pipe.
3. Forward clearance: the pipes extend forwards towards the front wheel as the engine is not canted as far forward as a 1000 engine, as well as due to the exhaust header exit angle. This may result in the need fr some undesirable mods for fairings (that is next after I get the pan and everything else back on)
Problems:
1. The header length is much greater than the era true hindle steelies I took off with lots of bends and two collectors per cylinder
2. The 1100 pan has to be used for these pipes to be tenable
3. #2 header exit contacts the cradle rail, so it needs to be torqued down to cause the torque to cant it away from the rail. The mating surface of the header mating surface (narrow edge) will have to be ground down about 2 mm on the inside (pointing to #3 header pipe, while leaving the edge closest to #1 header pipe intact, thus allowing the torque to be exerted on the pipe to provide a very small amount of clearance from the frame cradle rail.
Advantages:
1. 4-2-1 design is supposed to enhance the mid range the 1100 is famous for
2. The pipe diameter is respectable and exhaust scavenging will be spot on for shorter aftermarket systems (gp pipe here I come)
3. Weighs next to nothing and with a stubby exhaust will essentially have almost eliminated the 15 lbs exhaust system weight