What does 'knife edging' the crank give performance wise? Is it just to shave weight off of the crank? My motor is apart so I'm wondering if knife edging would be something beneficial? Would it cause problems down the line? Any help appreciated.

 

i heard its a good idea to let the motor rev a little faster.. dont take off 7-8lbs like some peeps do.. 4-5lbs would be more then enough.. i heard this from a reliable source.

 

It reduces rotating mass and thus inertia. It also cuts down on oil atomization due to high rpms.

If you reduce the weight too much - your engine may have the propensity to stall more often - especially if you use a heavy clutch and lightened flywheel. Your revs will rise and fall much more quickly too.

Anything that reduces the mass of the rotating assembly will allow the engine to rev higher will less strain on the engine components.

 

Dont bother, just balance your crank rods and pistons, and get a lightweight flywheel.

 

I agree.. just be sure to balance everything properly and you'll be money.

 

my crank is getting index ground, oil holes enlarged and chamfered, weights detailed and de-flashed, straightened and nitride hardened and micropolished.

Oh yeah... that's for my $900 beater. oops.

 

OEM cranks are tuftrided and nitrided from the factory.
Gotta love Honda.