
Originally Posted by
Jim2
No. The gear driven cam 800s were a development of the previous 750. The later cam-chain and VTEC 800s are essentially an iteration of the same design philosophy.
What he said.
The 800's motor (781cc compared to 748 for the 750s) looks the same at first glance, but is completely new: EFI vs. carbs, cast-in cylinder liners vs. pressed-in ones, engine as a stressed member (and swingarm pivoting off it)vs. full frame, etc.
The first 800s (1998-2001) were supposedly based on the RC45 (Yeah, right!), hence the RC46 designation, and have a shorter stroke (a whole 0.6mm!!) and 2mm bigger bore. Why they didn't go to 900cc or even 1000 is a mystery, and lost Honda a few sales to other marques.
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