But does it, we are talking about the same size piston, displacment is the same.
A BBK makes quite a lot of difference, but with stock bore I feel it is all in timing and air distribution...
Maybee I am completly wrong and need to do some more reading.
Where are you reading the info, someone please give me some links so I can read at my leisure.
i dont rember where i got info. i took it form so many threads and such.
a piston moves up and down in the cylinder. as it comes over the intake ports, it sucks air in as it moves down. as it reaches bottom of stroke, its propelled back up over the intake ports closing them..... piston comes up and compresses the air. yada yada yada.....
if u make the holes smaller, less air is able be sucked into the cylinder because of constriction. so u have to jet down to compesate for the rich condition. u make the ports bigger, more air is able to be sucked into the cylinder before the piston comes up and closes the ports.
same with the exhaust.....and thats the reason why 2 strokes are so more inoficent compared to the much hated 4 strokes is because of the exhaust. as the piston is comming down from the stroke, after cumbustion, it opens the exhaust port letting the gasses out. as it comes back up, it it starts to close that port and open the intake ports. but for a fraction of a second, the exhaust and intake ports are both open. minascuale-ly. so some fresh air and gas is allowed to escape stright out the exhaust, and some of the exhaust from previous cumbustion can be left in the cylinder. opening the exhaust port allows for the cumbusted gasses to escape faster, thats 1 reason y when the exhaust gets ported, u only can raise the exhaust port and not sink it too. because both ports will be opened at 1 time for a longer period of time.
now i have no idea if all this is compety correctt, but from the info that i have taken on this forum, and youtube, and google combined, i present you with this.
