Hooli's 14 Mk2...

[KiwiCol]

Yeah, HSS is not going to cut it, literally! 

[gsxbarmy]

If you've got one broken bolt Andy, no doubt there may (will?) be others. I invested in a couple of cobalt drills some years back and they've paid for themselves a few times over with various bikes I've worked upon - my mates Triumph Triple 675 in itself almost wore them out when we decided to strip it down, nearly every bolt snapped off. Cobalt drill went through them (almost) like butter.

[grog]

Agree, cobalt drills, quality easy outs& some heat. Tungsten drills are harder but shatter easily. IMO.

[Hooli]

Well I sent my neighbour a pic & he said he'll get it out no bother, so I'll roll it over the road to his workshop this evening & get it back in a few days all sorted.

He needs to borrow my ODBII scanner so it's a fair swap.

[Eric GSX1400K3]

my ODBII scanner

You a Star Wars fan then Hooli? Always looking out for ObiWan's brother?

[Hooli]

my ODBII scanner

You a Star Wars fan then Hooli? Always looking out for ObiWan's brother?

God no, those are the most over hyped series of bland, dull films ever.

[Hooli]

Exciting* update, it's now over the road awaiting more skilled attention.

[Hooli]

It's now done, so I was told last night. I'll collect in a day or two as in the office today & don't like wheeling bikes around my garden at night when the scum are out looking.

I think I'm going to order a new set of engine cover bolts though, I don't trust these crappy ones fitted after this example of their quality.

[Hooli]

New bolts ordered, the set coming includes the sump & oil pump but they won't be getting used. I liked the lie in the advert that the proper bolts rust, they don't or my real 14 would have fallen apart years ago rather than come apart like a new bike when needed as far as engine cases go. But the aftermarket stuff is much cheaper & arrives quicker so I can get this thing sorted for April.

[Hooli]

Well I spotted Rick had the shop open today for a customer to visit so I popped over & grabbed Mk2 back. She's tucked back up in my garage again ready to get more done on her. The first turn of the thread in the hole looks a bit manky but those bolts go so deep it won't cause an issue at all. Plus that was probably me trying to knock the stud around with a small cold chisel initially anyway.

[Kiwifruit]

Plus that was probably me trying to knock the stud around with a small cold chisel initially anyway.

Hooli you savage !!

[Hooli]

Plus that was probably me trying to knock the stud around with a small cold chisel initially anyway.

Hooli you savage !!

I couldn't find my hole punch to start with & that's worked for me before to just get things started.

[GSXKING]

Is this bolt issue from people over torquing them ? 

[KiwiCol]

probably a bit of that & galvanic corrosion between dissimilar metals that didn't have coppercote or similar applied during assembly.

[Eric GSX1400K3]

Issue with applying a thread lube is that this can lead to overtorquing the bolt by 30% or more. The friction factor gets reduced, so for the same applied torque, the actual final load in the fastener will be 30% higher, in some cases enough to strip threads and/or break bolts.

Critical is to understand whether the required torque is for dry or lubricated threads.

Galvanic corrosion will seize threads, and also cause pitting in the fastener, which leads to stress raisers, so when you go to undo them, they break on these faults.