SOHC.co.uk Forums > CB750
750 K2 Strip & Rebuild - help please
Lobo:
Hi Ken,
The instruments sit squarely in the mounts. The issue is that their angular ‘anchors’ (ie the locating strips on the rubber mounting bands) skew the two gauges. (Think of a time clock mounted with #1 uppermost, or a dartboard with #20 off to the side!)
I now see that there was a rubber band part # change within the K2 run, as well as both instruments. And as luck would have it… I have the earlier bands. I’m guessing the issue is here - aargh.
Lobo:
….what’s the point of the (CB750K) muffler connecting tube pls folks? (#12)
Oddjob:
Same as the 500, for pressure equalisation I believe.
K2-K6:
Cross talk for exhaust pressure from those cylinders connected to help scavenge from active pot and improve efficiency.
Long pipes are always working at lowest rpm to improve torque and response low down in the range.
Lobo:
Thanks gents.. I kind of figured all to do with equalising pressures etc, but given they’re so far down the system and practically next to the atmospheric opening I was having trouble believing they did much. Would a larger diameter pipe / and or a cross-connector near the head not perform better wrt scavenging active pressure?
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