B2x crank pulley / B230 harmonic balancer

Does the B23 crank pulley have the same bore diameter as the B230 harmonic balancer?

I remember Nathan used a Toyota 7M harmonic balancer when he converted to serp driven accesories. I see the 4AG has a 2 belt 5 groove pulley that might work for the same purpose .

I am trying to see what that bore diameter is for the redblock and determine if they are interchangeable.

The ends of the b23 and b230 crankshafts are different.

Thanks, PCH,

Does anyone know the bore diameter of either and or which one is bigger?

B21/B23 is 40mm. B230 is 36mm.

hiperfauto said:

B21/B23 is 40mm. B230 is 36mm.

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Thank you sir! And now it?s here for posterity.