Drain Bolt Dilema

garagedog
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garagedog
Edited Date/Time 9/18/2018 4:35pm
As you can see in this pic the drain hole was helicoiled at a bad angle. Its also american threads. Any suggestions other than taking it to a local machinist?

Your expert advice and experience is appreciated. Trying to save this beat 96' CR125.
-Thanks
Bob

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kb228
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kb228 8/21/2018 3:53am
8/21/2018 3:53am
My advice is to weld it up and remachine the hole
1
Chrismx448 8/21/2018 4:49am
8/21/2018 4:49am
i had this problem, unfortunately i had to split the cases and get a bose welded onto it and tapped a new thread onto it and put it back together
526
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526 8/21/2018 5:12am
8/21/2018 5:12am
Take it down to Dix Machine in Visalia they will be able to fix it right up.

The Shop

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garagedog
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garagedog 8/21/2018 12:24pm
8/21/2018 12:24pm
Thanks for the help guys (spelling too).

Dix is on my way home from work! I didn't know that shop was there. Perfect!
skypig
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skypig 8/21/2018 4:19pm
8/21/2018 4:19pm Edited Date/Time 8/21/2018 4:19pm
One option is “Timeserts”.
“Thickserts” if more material removal is required to repair.

Even if it isn’t the soloution for this issue - handy to know about if you have an interest in VMX. Saved a welding job on my ‘81 RM125 fork leg. A perfect soloution. (Better than new - the axle screws into steel now!)
ToolMaker
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ToolMaker 8/23/2018 7:17am
8/23/2018 7:17am
One option, not the most desirable option. File the surface perpendicular to the crooked hole, in other words make the the surface flat relative to the bolt,
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526
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526 9/18/2018 8:26am
9/18/2018 8:26am
garagedog wrote:
Thanks for the help guys (spelling too).

Dix is on my way home from work! I didn't know that shop was there. Perfect!
Were they able to help you?
Mossy
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Mossy 9/18/2018 11:36am
9/18/2018 11:36am
skypig wrote:
One option is “Timeserts”. “Thickserts” if more material removal is required to repair. Even if it isn’t the soloution for this issue - handy to know...
One option is “Timeserts”.
“Thickserts” if more material removal is required to repair.

Even if it isn’t the soloution for this issue - handy to know about if you have an interest in VMX. Saved a welding job on my ‘81 RM125 fork leg. A perfect soloution. (Better than new - the axle screws into steel now!)
I have a 97 yz125 where someone tapped a bolt hole for the fork guard with a Standard tap, and also a hole for the swingarm guard with a standard tap. I suppose this could fix this for me??
skypig
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skypig 9/18/2018 4:35pm
9/18/2018 4:35pm
Mossy wrote:
I have a 97 yz125 where someone tapped a bolt hole for the fork guard with a Standard tap, and also a hole for the swingarm...
I have a 97 yz125 where someone tapped a bolt hole for the fork guard with a Standard tap, and also a hole for the swingarm guard with a standard tap. I suppose this could fix this for me??
I think it could.

I’d try a (cheaper) normal helicoil first.
Depending on how oversized the hole is - Helicoil, Timesert, Thicksert. In that order.
You can probably find the drill size required for each option, and compare that to the situation.

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