I agree with Cobra - that engine looks like it was revving pretty hard to inflict that sort of damage. But stranger things have happened, as they say. When I rebuilt my '70 A50, even though it was fitted with the later rods, my research indicated that re-using 50 year old alloy rods might be a bad idea. For starters, I had to drive the rod bolts out, which I thought was a warning, and prompted the whole rod replacement saga. They might've been OK... Regardless, far be it for me to try and tell vastly more experienced people what to do. Just offering my two bob's worth.
G'day Paul, after 4 years since you last worked on this motor their is no warranty comeback and l hope you get a good price for scrap alloy, what an absolute mess, l have told mates in our motorcycle club too watch your videos and l will get feedback whether any have had this much damage to a motor, cheers mate, Neil 🤠.
hi Paul i don't know if your going for new old stock rods but if not try and get the later rods and they will be shot peened, 71/1112 r3r but be careful triumph use the same rod number but they have a smaller big end eye, anyway take care Paul, Adrian.
Now that's what I call an eccentric camshaft! That must have gone with a very loud bang, so I can't help wondering if the rider has got his trousers clean yet?
It looks like it has had the oil changed at regular intervals and the damaged looks like the rod has snapped at high revs hence the brutal damage. By the cleanliness of the inside of the cases I would imagine the sludge trap is clean ? Fit the best rods to cope with future use ..... If racing carillo ..... Sunday tootling around B roads use the best alloy one's you think will do.
May have changed down at high revs instead of changing up. I know somebody who blew their car engine doing that on the motorway. They have an auto now!
It seems to me that magnitude of damage indicates a downshift at too high RPM because it would require the inertia of the weight of the bike to create that much wallop.
