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Old 09-27-2016, 05:25 PM   #1
SideVinder650
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"big-bang" firing order

hey guys anyone ever heard of this?

https://en.wikipedia.org/wiki/Big-bang_firing_order

it seems that they're supposing this to be a modified firing order, but the article may (*seems to*) describe harley's as being inherently firing ordered in this manner.

i was searching to find out whether a 45 degree v4 had ever been made by a motorcycle company...like a harley with 4 cylinders instead of two... (single pin crank, etc. etc.)
and this came up in the search results...

is this a modification that people do to their harleys or any other bike? it said that the xr750 w/ dual carb was a popular mod back in the day.

i also understand that this firing order may be part of the new triumph bonneville USA where it gets it's harley-like sound from.

they also didnt explain where the name comes from and if altering the firing order in this manner affects exhaust note ( i dont see why it wouldnt)
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Old 09-27-2016, 07:54 PM   #2
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The 09 - 15 R1 is considered a "Big Bang" engine

https://rideapart.com/articles/2009-...ig-bang-engine
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Old 09-27-2016, 11:41 PM   #3
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This might be an interesting read given your questions

http://www.cycleworld.com/2016/02/01...sound-insights

I'd wonder if a larger 45 deg angle engine could stay in one piece and not shake itself to bits.
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