wetterthebetter

Hey everyone

I have a question? I have a 85 sbc w/ a alpha 1.and the flywheel looks like a manual trans type less machining of the face for the clutch, Does this sound right??? In the world of boating do you wanna run a heavy or light fly wheel and if the lighter was desired can you use a sfi auto type flywheel?????,all your info is greatly needed



Thanks Stan

Tinkerer

That is the right one.
You need the heavy one to smooth out the engine pulses or you will start spitting out the gears in that ALPHA.

mcollinstn

light flywheels are for quick revving motors. That is their main benefit. Other benefits are less gyroscopic effect on vehicles that must change direction very quickly.

light flywheels are a drawback in every other area.


Boats don't need quick revving motors. Only need to go from idle to top rpm ONCE as the boat goes to top speed, unlike a car that shifts 4 or 5 times.

Boats don't need to change directions quickly enough for gyro effect to be a factor, unlike a roadrace bike that has to lean over quickly against the gyro effect of its crank and flywheel.

Heavier flywheels dampen the power pulses. And, as Tink says, they make your other parts live longer.

wetterthebetter

thanks for the info. i think i will stay with what was on thereand not change any thing.

thanks again