Frame sliders/engine guards

[peterbaron]

Well-spotted, Max.
I think these CB engine mounts are disgraceful for thesereasons...
1. They are placed too far to the outer edges of the crankcase where they are very vulnerable to being struck
2. They are grossly insubstantial. If I recall, my '72 CB750 mounts were bigger affairs that went right across the engine from one side to the other, with one big long bolt securing the two sides.
3. This is from a world-leading manufacturer, so you wouldn't expect these sort of errors.

As a result of 2017EX, Houtman and other's observations on crashbars (my preferred protection) I have switched my intentions to buy from Hepco&Becker to the SWMotech offering - very similar bars but with two main differences - an additional metal strip between engine mount and bar mount on SWM, that allows a little flexibility in an accident and reduces "shock", and a different attitude to the mounting bolt - rigid and inflexible on H&B or "sacrificial" in nature on SWM.

Here are my own broken engine mount pics:

For this problem, I would use a two pice clamping collar ( not band) to brace the crack and prevent from further destruction. Perfect would be custom machined collar, which must be installed in crack squeezing manner. Do your repair right, so it will last forever.
I used JB-Weld for fixing car's broken transmission housing/mount...never came back with any complaint at all.

Here is a good collar example/idea:

https://www.globalindustrial.ca/p/motors...gIjR_D_BwE

Good luck