Twin Spark? Wot when why??

[Chris Hill]

As the last BM I had was an old R100 RT, and I'm not really up to date with all the new bikes, I would like to ask about Twin Spark engines.

Do all 1150 GS have this engine and does it make a difference?

Thanks in advance

Chris

 

[cookie]

no*

and

not really.





*late 2002> bikes IIRC.

 

[Tarka]

No they don`t all have it and yes it does make a difference.

The difference being yet another pointless BMW overcomplication that does nothing other than compromise reliability.

 

[cookie]

No they don`t all have it and yes it does make a difference.

The difference being yet another pointless BMW overcomplication that does nothing other than compromise reliability.

yes, there is that i suppose

 

[Loiq]

twin spark makes it easier to pump the water out cos there's more holes in the engine

 

[ianboydsnr]

Its easier to convert a twin spark to single spark than it is to convert a single spark to twin spark


Twin sparks cost more at major service time

 

[Chris Hill]

Thanks!

Thanks for the information.. now I know!

 

[alimey4u2]

Twin sparks work well on very large combustion chambers, normally 2 valve very oversquare engines ( requiring high domed pistons) with large capacity cylinders. They increase the speed & efficiency of the flame travel ( now on two fronts) reducing the amount of ignition advance required for efficient combustion....
"Compact" combustion chamber spaces ( especially with squish bands) do not gain any noticable increase in efficiency..