G
Guest
·I've been doing a few measurements and working some formulae to make my own thin wall stailess header for my 2005 Speed Triple.
Stock header primary OD - 1.525 in. (38.73mm)
Stock collector OD - 1.745 in. (44.32mm)
Zard primary OD - 1.548 in. (39.32mm)
Zard Collector OD - 1.960 in. (49.78mm)
[thanks Littlefield!]
Arrow primary OD - 1.48 in (37.5mm) - .049 thick tubing
Arrow collector OD - 2.0 inches (51mm)
Daytona primary OD - 1.614 in. (41mm)
Daytona collector OD - 2.125 in. (54mm)
[THANKS Steve]
I am thinking that 1.5 inch primaries (with anti-reversion cone) with a step to 1.625 inch might make the on-off-on throttle transition a bit easier - especially with a touch more compression. Primary length is close, but cylinder #2 is going to be a touch longer than the others - this should be good for low end power, and help pulse tuning.
Using a merge collector with a 12-14 degree cone that transitions to a 2 inch OD collector. Tune collector length for best average power and use a seperation canister to remove the pulse tuning from the collector and the mid pipe.
Ceramic coat and wrap the header, and run the $_ _# out of it.
Now to cut the header flanges out on the mill, build a welding jig, and finish ordering the tubing.
Stock header primary OD - 1.525 in. (38.73mm)
Stock collector OD - 1.745 in. (44.32mm)
Zard primary OD - 1.548 in. (39.32mm)
Zard Collector OD - 1.960 in. (49.78mm)
[thanks Littlefield!]
Arrow primary OD - 1.48 in (37.5mm) - .049 thick tubing
Arrow collector OD - 2.0 inches (51mm)
Daytona primary OD - 1.614 in. (41mm)
Daytona collector OD - 2.125 in. (54mm)
[THANKS Steve]
I am thinking that 1.5 inch primaries (with anti-reversion cone) with a step to 1.625 inch might make the on-off-on throttle transition a bit easier - especially with a touch more compression. Primary length is close, but cylinder #2 is going to be a touch longer than the others - this should be good for low end power, and help pulse tuning.
Using a merge collector with a 12-14 degree cone that transitions to a 2 inch OD collector. Tune collector length for best average power and use a seperation canister to remove the pulse tuning from the collector and the mid pipe.
Ceramic coat and wrap the header, and run the $_ _# out of it.
Now to cut the header flanges out on the mill, build a welding jig, and finish ordering the tubing.