01-08-2020, 03:32 AM
Has anyone else noticed the header pipes on the 2014 standard, equipped with a four-into-one collector system, are intentionally designed to have uneven lengths?
With a standard crank design of an inline four, a cylinder fires every 180 deg of crank rotation. The most efficient exhaust scavenging would result from headers that were equal length. The pipe for the #1 cylinder, which has the longest run to the collector on the far side of the bike is intentionally made even longer than it needs to be, with an out-of-path bend. #2 has been made longer as well.
In an equal length setup, the #3 & 4 would be bent to add a little length so as to match #1 & 2.
Any thoughts?
With a standard crank design of an inline four, a cylinder fires every 180 deg of crank rotation. The most efficient exhaust scavenging would result from headers that were equal length. The pipe for the #1 cylinder, which has the longest run to the collector on the far side of the bike is intentionally made even longer than it needs to be, with an out-of-path bend. #2 has been made longer as well.
In an equal length setup, the #3 & 4 would be bent to add a little length so as to match #1 & 2.
Any thoughts?