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Old 01-08-2010 | 05:02 PM
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houston
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Originally Posted by aegiswa
Hey Monty,

Can you describe the between these cranks say in a 3 port or 5 port motor 15007T, 15009T and your 15009HT

Next question for you is what size is the rear bearing in the N21BF? 25,4 or 25,8 - I am guessing the 25,8 but there is not an exploded parts page any where for the motor - Same for the FMS; no drawing to reference

Thanks!!
The fms is 14.5x26x6x6.3mm offset inner race
N21bf is 14x25.4x6mm

As far as the cranks they are all very similar , the tuned versions are basically hand finished and there is timing advancement and intake duration length ground into the crank opening .
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