SOHC.co.uk Forums > CB750
Broken front engine mounting lug
sprinta:
Have been looking at a UK K2 but have just been advised by the owner that whilst he was tightening the front right 10mm engine mounting bolt that a part of the mounting lug has broken where the nut is held captive in the front casing channel. He is hoping to get it welded in situ but is this a know weakness with the cases in this position and is a successful repair possible in this location?
Is it a bike that one should walk away from?
JamesH:
Personally I would walk away unless it's a very good deal....I would also ask form pictures of the damage before he has the repair done so you know the extent of the damage...
sprinta:
Thanks for the reply and advice. I am awaiting some photos of the damage as it is now and also after it has been done, if it can be?
Is it a known problem area for these bikes?
Laverda Dave:
Years ago when I was 19 I traded my CB200 for a used 400/4. It had been owned by a old guy who had fitted full touring equipment including a huge barn door fairing and crash bars. All the added weight made the bike weave at anything above 70mph so I took it all off. Unbeknown to me the lower crash bar bolts which were also the lower front engine mounting bolts were 3mm longer than the original bolts. Result, when I went for a ride oil weeped from the crack in the crankcase beside the mounting lug caused by the longer bolt bottoming out against the case. Nobody would weld the crack so I used araldite over it until I could find/afford a s/h engine! An expensive lesson learned!
Good luck with any repairs if you decide to buy it but I would insist on seeing it running first and get it good and hot.
Green1:
If its just the part that holds the nut in position it will be fine as long as the lug is intact.
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