Hi all , first time on here, i don't ride a Harley but have a love for V twin engines. I have a few questions Regarding the 60 degree V twin engine.

Do the rods still share the same crank pin or does it use a offset pin now, unlike the 45 degree engines?

The firing order on the 60 degree, does anybody know what it is, im aware that if the degree between the V is increased the firing order is changed, example 90 degree V twin may be more balanced but more uneven firing.

Last one im assuming all v twin engines, modern engines anyway have the cylinders slightly offset if using the same crank pin so both rods can connect to the crank journal, unlike the fork arrangement of connecting rods.

Thanks all

are you referring to the Rotax motor ?

I think the V rod motor is 60 degree & uses car type rods.

the 45 degree Harley motors use Male Female rods. but there is more to it than that.

the Big Twin 45 degree motors have motor on it's own gearbox is separate unit ( i like this feature ) the sportster motor is unit construction & with the new ones you have to split the cases to get at the gear box.

the V Rods its even more complex, as the gearbox is right in with the motor, you break 2 nd gear and you loose a motor in most cases as it takes out the motor. & three days of work to fix if you know what your doing.

so i prefer the simplisity of the big twin 45 degree.

they are all good when they are runing.

Thanks for the replies, after a bit more research i found the answer regarding the way the con rods sorta join together at the big end, one sorta slides inside the other, it seems weak but these engines have proven themselves so maybe they are stronger then led to believe.

if anybody has the firing order of a 60degree V-twin, can you please tell me. Cheers

www.1130cc.com

Should help with your search for answers.

http://www.1130cc.com/forums/index.php?s=0685ae3b609068fe12e771b590145e5b