I caught it. but cb750 4into 2 pipes are usually 1-2 and 3-4 unless they are the cross over types. It makes sense that 1 and 4 would be linked in those cross over pipes becase when 1 is firing 4's exhaust valve should be just closing (1 and 4 fire off the same coil and the ignition system is wasted spark).quote:Originally posted by HackAsaw
oh wait...... it is indeed 1 and 4 along with 2 and 3 just like most every inline 4 out there
none of you goobers caught that momentary retardation!
don't worry I know a few things about them and I am confused too. Mostly because I am at work and not in the work shop.quote:Originally posted by jbranson
Since I know nothing about fours....how does that work....if two paired cylinders are 180, wouldn't that mean that mis-matched pairs would be 360 degrees?
Meaning that 2-1 pipes...one pipe one come off one cylinder/one coil, the other pipe would come off one cylinder/the other coil?
I was thinking that on a four cylinder 180 degree crank...that two cylinder would always work 360 apart...and those you would pair into a 2-1 system. A 2-1 system usually works best on a two cylinders that fire one revolution apart.
Does the honda four fire two cylinders at the same time 180 apart? If so...then yeah, a 2-1 system wouldn't seem ideal.
I was just assuming from the layout of the pipes that it was collection two cylinders firing 360 apart...else what would be the point of crossing pipes.
I'm just feeling verbose...I seriously don't know anything about honda fours.