Hello again, motobrickers. My latest saga for your enjoyment:
Having identified air leaks around a couple of my throttle bodies (butane test) I decided to go all in and replace all three intake manifolds.
I bathed all six bolts in penetrating oil over night, but still three of them snapped off when I came to undo them.
I bought the best rated bolt extractor set I could find and a set of left handed drills. I filed the tops and centrepunched them, before drilling and attempting to extract. The pictures show where I am now.
Cylinder three has both threads intact, cylinder two has one intact and one bolt stuck and partially drilled out quite off centre, cylinder one has both threads with stuck broken bolts, one partially drilled out, again off centre, and the other in a total mess of multiple, failed drill-outs, a snapped off centre punch etc etc.
I had chosen a long (UK bank holiday) weekend to get this done, but didn't expect quite so much trouble! Of course I need the bike out of the workshop by Tuesday morning, and have nowhere else to leave it in pieces which rather precludes the total strip down I assume would be necessary to get the holes filled and rethreaded at a machine shop.
Does any body have any bright ideas? I don't mind if the fixing solution can never be undone again, I'd just like a nice, permanent seal on my expensive new intake manifolds....
Thanks in advance,
Kaleb