Okay. this is an old thread, but I just broke two sump bolts. Same size as Paul's Throttle body one.
I've read this thread twice through and still wonder if I should try and get the stumps out myself or just take it to a Triumph shop.
Here's what I have: Two broke, and one that's still good.
The broken ones are at the front right side of the engine. I'm not about to take the whole sump plate off. No way. Although it seems that the bolts broke off before hitting the threads in the main block.
The killer is, it's at the bottom of the engine, and I'd have to do everything upside down, and on my back.
There's 21 of these bolts and the two sheared at less that 12 Nm. A third felt like it was about to snap, so I stopped there. I'll need to find replacement bolts (8mm flange bolts) and am thinking stainless steel ones if I can find them.
Would it hurt to use a bolt with a washer, or should I stick to OEM? And where to get them?
Also, if I decide to take it to a shop, would it hurt to ride the bike 60 miles without blowing oil through the gasket? I don't know if there's pressure or not down there.
Well, this is a start. Might have to start a new thread if not too many experts on here notice this old one.
Posted a bit earlier here:
https://www.r3owners.net/threads/what-did-you-do-today.32519/page-112#post-667409