I've come across an engine from a 1993 MC22 CBR250rr that I was interested in acquiring as a spare, and could probably be bought fairly cheaply. As it transpires, the left hand side upper engine mount has been broken off somehow, as well as taking a chunk out of the adjacent section of the head casting (see pics below). This has naturally dampened my enthusiasm and it's value. Has anyone had experience having this sort of damage repaired? I imagine there would be some concerns regarding the strength of any weld, as well as potential for warpage. If it couldn't be welded, or couldn't be welded without stripping the engine down, it would still have some value as a parts engine at any rate I suppose.
Just my two cents Kiffsta buys entire bikes for $500. Just keep shopping and I am sure you can find another without the headache.
Yep, that it what I told the bloke when I spoke to him. Even if not worth repairing it could have some use to me as I have another busted engine that needs a new head, and spare engine cases, starters and radiators, etc are always handy.
That's some serious damage, I would not know if this is repairable but would always have some doubt if it were. Time to get an expert to enlighten us.....over to the "Good Doctor"
This would be a good option to repair this i reckon, no idea how well it works but could be worth a try. Can buy the stuff online for $50 bucks in Aus apparently...
I've had good experiences with JBweld but never on something that heavy duty. Supposed to be strong, high heat resistant stuff though...
I crashed a 900 hornet, one of the mounts cracked through but did not break off. I pulled the engine out and went to a prop repair place that was suggested by a friend. The internal weld looked like crap, but it did the job. The external weld looked aight, and also held up. I only kept that bike for a short while after the repair, but beat the piss out of it at a track day. I did everything I could to stress that mount (engine is part of the frame on the 900 hornet...) It is doable, by someone with the right skills. Probably grey haired and have been welding Al bits since their 20s.
Should be an easy repair for the mount. I would do it in situ with a TIG, just heat the surrounding area first and make sure it is clean metal.
Thanks for the advice. I know a bloke who is a very good metal fabricator and does some very tidy work on aluminium radiators and intercoolers, so wouldn't have to attempt the repair myself. Now, if it can only be acquired for a dirt cheap price.......
@Murdo is right, it can be repaired but it is cast and you have to pay special attention on heating the metal.. I have seen plenty of people attempt to weld cast and fail due to being ill prepared.
