[moto]

That repair is a piece of art!

Which one are you looking at? The ZR case?

You are very talented!

Thank you, good sir!

Regards,

Derek

[quexpress]

Which one are you looking at? The ZR case?

I looked at everything on your linked pages. It's all top shelf stuff!

Thank you, good sir!
Regards,
Derek

You are most welcome Derek. That is such nice work. Hats off to you.
Having said that, I'm not sure that many people here are as equipped and qualified as your are. You are at a professional level (you have a TIG, a mill, etc.).
In my case, I do not weld, nor am a machinist. I need to get that done elsewhere. IMHO I am not alone in that situation.
That is the reason why I use the explained basic drill jig method. As a matter of fact, I used it again recently to repair a few crankcase bolts that had been broken, and then screwed up by someone who tried to drill it without a jig. It worked as expected.
Please don't take this as a critic of your methods. I wish I could do that, but it's not the case.
That is why I have suggested this method. All you need is a machinist to make the jig, and you can do this with your portable drill.
Cheers!

[88kat60009]

good write up both of you

i felt fortunate, when i pulled the header off my bike, all 8 bolts cracked right loose. my only problem right now is i need to tap the inside #3 hole, i kinda crossed threaded it trying to put it back in. no biggie, will be fixed when i have the bike apart this winter to redo everything on it

[BigFish]

IMO add any detail you think is missing and sticky this.

[moto]

That is why I have suggested this method. All you need is a machinist to make the jig, and you can do this with your portable drill.
Cheers!

Note that the same machinist who can make a jig without drill bushings can make one with drill bushings. In fact, it may be easier, as now only a mill is required, rather than a mill and a lathe. Unless your portable drill does not have a reverse, there is also nothing to prevent you from using left-handed drill bits (they can be mail ordered if need be).

Regards,

Derek

[quexpress]

Unless your portable drill does not have a reverse, there is also nothing to prevent you from using left-handed drill bits (they can be mail ordered if need be).
Regards,
Derek

I agree!