Misc. Information and Knowledge Bank
Gearbox Mounting Bolt Torque:
1/2 Bolt - 70 ft.lb
3/8 Bolt - 25 ft.lb
5/16 or 8 mm Bolt - 18 ft.lb
Motor Mount Bolt Torque:
200 inch lbs
Cracked Coolant Fitting Repair (if needed)
I removed the fitting from the engine (photo 1), at which time I could see the small crack on the underside (photo 2, with arrow). I lightly inserted a 1/4NPT tap into the broken fitting so I could get a measurement of how deep I would need to tap later in order to maintain the same "clock position" for a 90 degree brass fitting that needs to be there (photo 3). When I had the tap screwed in finger tight, I simply counted the number of threads that were exposed (on the tap) and thus knew that when I threaded it again, that was "how deep" it needed to go.
Photo 4 shows a Fuel Injection Clamp being used. This was to help guide a band saw blade while I cut the cracked material off, as well as to support the metal casting when I re-tapped it. After cutting the old metal off, I polished the edge to a mirror finish with the idea of eliminating stress risers in case it wanted to crack again when I re-tapped it (photo 6).
As it turned out, the metal towards the base of the casting is thicker than it is out on the end of the nipple, so the clamp may be overkill (photo 7). But I left it on as I could see no downside to doing that. Perhaps an appropriate size of Oetiker clamp would have been better, but I simply used what I had available and it is working well.
I believe the correct name for this thing is "Cover, Water Outlet", having Part Number 19315-5R0-000. I ordered a new one from https://www.hondapartsnow.com/ just in case I messed this one up, although it appears that I won't need it one as my old one is functioning better than ever. -Hoyt
