Anybody out there with any experience of this or anything close. I’ve done some build ups before on less critical parts successfully, but I really am worried about cracking these cases.
![Image](https://uploads.tapatalk-cdn.com/20181226/e4271736b51040cd5d4d7725b3d09c7f.jpg)
![Image](https://uploads.tapatalk-cdn.com/20181226/d1d5624fd7309484a9e243a3a709e7e2.jpg)
Thanks for any help.
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Repairing areas around threaded holes are worse, I’m afraid. “Best” method I’ve found is to ream the existing hole larger for a timesert, then you’re back to the original hole diameter with a much stronger thread.carthorse wrote:Thanks very much for your information. It does sound like a lot of grief, but might be worth it in the long run. Maybe I’ll go the machining/spacer route to start and if that doesn’t hold together try a build up with weld. I’m just trying to figure out the lesser of two evils. Introducing filler metal , running into impurity’s and localized heating have got me a little scared. Especially a motor mount on an engine that vibrates worse than a breeze block in a tumble drier.
I also just discovered a crack in another case on the same bike around a threaded hole. Previous owner was obviously prodigiously strong. This hole is used as access to an adjuster for the primary chain, so as such, is not under any additional stress that the motor mount would have to put up with. I’m definitely going to use your info to weld that up.
Thanks again for your reply. I appreciate you’ve had to take time out of your day and given up hard earned information. Hopefully I can help you or someone else down along the line. (Just not with welding - I kinda suck at welding!).
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Not surprising really. Triumphs are terrible at holding oil, hence the cases never get saturatedMinnesotaDave wrote:I did a couple triumph engine cases a few years ago.
It went pretty smoothly really - used my 1963 Airco tig/stick (miller 330abp)
Haha!!!cj737 wrote:Not surprising really. Triumphs are terrible at holding oil, hence the cases never get saturatedMinnesotaDave wrote:I did a couple triumph engine cases a few years ago.
It went pretty smoothly really - used my 1963 Airco tig/stick (miller 330abp)![]()
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