Can you Heli-coil a oil drain plug?


16 replies to this topic
  • underground-mpyre

Posted May 26, 2015 - 05:59 AM

#1

Welp, change my oil over the weekend and had an oil at the drain plug. Threads are pretty worn out. Wondering if it is a good idea to heli-coil the drain plug to get a better fitment?

  • Krannie McKranface

Posted May 26, 2015 - 06:18 AM

#2

Time-sert might work better



  • underground-mpyre

Posted May 26, 2015 - 06:49 AM

#3

Can you explain what exactly that is and how it can be implemented?

  • GuyGraham

Posted May 26, 2015 - 10:43 AM

#4

Which one is in question?

 

this is how I recovered the leftside oil drain bolt thread

http://www.thumperta...d#entry11812380



  • underground-mpyre

Posted May 26, 2015 - 11:24 AM

#5

Which one is in question?
 
this is how I recovered the leftside oil drain bolt thread
http://www.thumperta...d#entry11812380


I have a 426 and the drain plug is underneath the bike on the left side.

  • grayracer513

Posted May 26, 2015 - 03:06 PM

#6

Can you explain what exactly that is and how it can be implemented?

 

http://www.timesert.com/

 

Time-Serts work better for things like drain plugs because:

 

  1. They have no "pigtail" to worry about breaking off and retrieving
  2. They do not tend to pull the top thread free of the bore when the bolt is removed multiple times
  3. The tooling includes a spot facing cutter that ensures that the top of the hole where the washer sits is square with the hole itself, which allows more certain sealing


  • underground-mpyre

Posted May 26, 2015 - 03:10 PM

#7

Is it also a good idea to use Yamaseal or some kind of sealant to stop any and all leaks on the outside of the time-sert?



Now all I got to do is find a kit and someone more steady in the hand and proficient at this than me. Thanks!

  • grayracer513

Posted May 26, 2015 - 03:28 PM

#8

Is it also a good idea to use Yamaseal or some kind of sealant to stop any and all leaks on the outside of the time-sert?
 

 

Yes, but I'd use Loc-Tite instead:

 

http://www.timesert....tml/faq.html#26



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  • underground-mpyre

Posted May 27, 2015 - 05:06 AM

#9

Does anyone know the size I need for the 2002 WR426 drain plug time-sert bolt?

  • GuyGraham

Posted May 27, 2015 - 05:50 AM

#10

Looks like a time-sert might not be best solution

 

http://www.thumperta...oil-drain-plug/

reading the thread the stock bolt looks to be M12 x 1.5



  • grayracer513

Posted May 27, 2015 - 08:47 AM

#11

The drain below the stator/flywheel housing on the crankcase is in fact an M12x1.5



  • underground-mpyre

Posted May 27, 2015 - 09:25 AM

#12

Thank you and I appreciate it. Looks like they do have that size for the kit.

  • 123devinzz1

Posted May 27, 2015 - 08:04 PM

#13

ive had my drain heli coiled for a couple years now with no problems.

  • grayracer513

Posted May 28, 2015 - 07:20 AM

#14

It is quite possible to get a Heli-Coil into place as a drain plug repair and have it work perfectly.  It's also easier than you'd hope it would be to have it fail on any of the three counts I offered, all of which a Time-Sert addresses.  Heli-Coils are great, and I use them all them time, but Time-Serts do make a more certain drain plug repair that has less potential to leak or fail with repeated use.



  • bobpara

Posted May 28, 2015 - 09:47 AM

#15

Possibly a statement of the obvious, but this is one tapped hole where you dont want to leave many, if any, metal chips behind when you drill or whatever



  • underground-mpyre

Posted May 28, 2015 - 09:59 AM

#16

I plan on using a air hose at 15psi from the oil line and rowter adaptor with a shop vac near the drill to collect all shavings. Then afterwards use some cheap oil and kerosene to run it for a few minutes and flush it out. Well, that is what my thought is to get all the shavings out and away from disaster..

  • grayracer513

Posted May 28, 2015 - 02:44 PM

#17

One nice thing about the way the drain is located on this particular engine is that if you take the simple and fairly easy step of removing the generator cover, you can get right at the inside of the drain hole. 






 
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