Topic: Case Bolts

[rundogdave]

Reassembling '78 750K engine I disassembled 10 years ago. Are these two empty holes associated with something else later during the assembly? Thought I had all the bolts labeled , but can't find these. The holes are 11mm, so I assume a 10mm bolt and nut for each.

Also, had this bolt and fixture leftover. Any idea were it might go? Had it in the bag labeled "top case bolts". No empty holes except for the two pictured.

[jlh3rd]

#3 on the parts list

[CycleRanger]

That bracket attaches to the back of the engine case and the four carb overflow hoses are routed through it.

[scottly]

The stock location of the carb drain/overflow bracket places the tubes directly in front of the rear tire on the late 750s, which was a mistake on Honda's part. For one thing, if there is a carb malfunction and fuel is leaking out of the tubes, it will go under the tire, possibly causing a loss of traction. Second, there have been issues with the later PD carbs when riding in the rain, possibly due to the water coming off the tire spraying past the ends of the tubes, creating a siphon and pulling air out of the float bowls faster than the tiny float bowl vents can replace. I recommend relocating the bracket so the tubes are on either side of the tire; I think the earlier bikes had the tubes routed to the right side?

[rundogdave]

Thank you. Any thoughts about the two empty holes pictured? Seems odd that a 8mm bolt would be installed in 11mm hole.

[bryanj]

Is the other hole not the locating dowel

[scottly]

The hole on the left has a 10mm bolt that's about 3 1/2" long overall, and the hole on the right has an 8mm bolt, with the carb tube guide sitting on top of the case. (I had to make a quick trip down to the shop to check. )

[rundogdave]

Thank you all!!