Totally ruined right rear mounting hole... now what?

[noobtard]

So, I had a rear stud snap off below flush... My mom's boyfriend decided to drill it out for me..(grr)
there were still chunks of the old stud down inside the hole..

I finally got a couple taps today... ground the hole out to 13/64 and started tapping to 1/4" x 20.. which went fine.. I figured I'd try the 2nd Tap through one more time(it looked sharper...)

and snap.... now I had a TAP stuck way down in the hole...

had no way of trying to get it out... drill bits VS Tap = useless... so.. now what?

Any ideas? I'm thinking: Doomed..
( maybe a Helicoil if I can ever get the buried tap out?..would have to be a pretty big helicoil... down to 1/4" ish...)


so, what have we learned here?
Try an "Easy Out" first!....(when studs break...)
if you break a tap off.... uh,.. Don't try "drilling" it out....(try a "finger" tool... don't try chiseling it out....)
holes above the stock studs = badddddd.

[Cabinfever1977]

find out what or if anything is in the engine next to the holes,if it is just solid metal and not a engine part,then you could drill and tap new holes next to the old ones. then you could just fill in the old ones. maybe a diagram of the engine block or somebody else might know. if you do make holes next to the old ones you will have to modify your mount.
somebody on this forum said that a diamond bit shaped like a ball on the end will drill out almost anymetal out of a hole like that.


your other option is another block($20+sh) or another engine($75+sh).

[spad4me]

I have had some one try to steal my happytime engine.

I removed the the broken studs with a dremel .
First by grinding a slot into the broken bolt piece, slot as deep as needed use a small bladed screw driver to unscrew the
broken piece ...
Then on another broken piece which would not come out. By using a conical DIAMOND rasp to eat the steel use 2 or 3 with water or oil to keep the DIAMOND cutting . then re tap.

[noobtard]

as I think you can see, there isn't much left to re-tap these days...
can't sleep because I'm too busy thinking about the stoopid thing..

so, how about attempting to dremel out all the steel/junk*with a diamond tip..(we're talking much bigger hole..) and then getting someone to Tig the hole shut? and then re-tap though that...(sounds hard..)

[Bikeguy Joe]

Just re-drill right above the old mounting holes.

[Venice Motor Bikes]

Originally Posted by Bikeguy Joe

Just re-drill right above the old mounting holes.

Yep... Just what he said!!!

[noobtard]

Originally Posted by Bikeguy Joe

Just re-drill right above the old mounting holes.

That crossed my mind but.. with the stock mount that slides on the studs?... and notice how close that left thread is to "nothing-ness" on the other side? like 1.5mm... of metal...

[Bikeguy Joe]

The original ones don't come out the side do they?

[Venice Motor Bikes]

I have a dead engine in my garage... I'll look at it today and report back about where, & where not to re-drill for those studs...

[Bikeguy Joe]

What I meant was the original hole is drilled close to the side, there is no reason the new hole would pull out.