A simple oil change.....Negative

[LTEnterprises]

My 03 dk 50c did the same thing...got a 1/2 x 20 tap and used a chevy / ford drain plug...they both use 1/2 x 20 threads....oversized plugs WILL give you issues in a few changes...least thats what i have experienced in the last 33 years of repairs...JMHO

 

[MotorSeven]

My 03 dk 50c did the same thing...got a 1/2 x 20 tap and used a chevy / ford drain plug...they both use 1/2 x 20 threads....oversized plugs WILL give you issues in a few changes...least thats what i have experienced in the last 33 years of repairs...JMHO

Thanks for the heads up...I'll keep an eye on it.

 

[boomer613]

Don't know much about tapping/thread kits but I think this kit would work for kioti's aluminum oil pans: TIME-SERT 0122A Oil Drain Plug Repair - Aluminum Pan 1/2" x 20 | Thread Repair Tools / Inserts

 

[Cpjlube]

The OP put in a "piggy-back plug". You thread in the oversize plug which has a smaller plug tapped down the middle. You never need to remove the oversize part. A steel insert from the OEM would have been best but if Honda won't do it making millions of cars, I'm sure Kioti won't do it. Good thing is, the drain plug has only two jobs. Hold the oil in and allow you to drain it occasionally. Not rocket science. I just wish OEMs would consider that and design accordingly. A good helicoil, installed properly, will be stronger than the original aluminum design.

Chuck

 

[JoeBuyer]

Or just make the plug a softer material than the pan threads.

 

[Soundguy]

in an aluminum pan.. hmm.. that'd be zinc or lead then..

 

[JoeBuyer]

I am no metallurgist but I believe they could have a different metal inserted in the pan that would yield stronger threads but still keep the aluminum pan itself for heat transfer. Or use a plastic plug. LOL

 

[patcopaul]

FWIW...
It seems to me that a simple answer would be to make the drain plug out of a softer material than the pan, then the plug would strip not the pan.
Another solution may be to make the plug like a wall anchor and let compression make the seal, then there would be no threads to strip.

 

[murphy1244]

How about using those expanding plugs like we used for freeze plugs?

 

[Soundguy]

i've seen that on a welch plug hole and it led to a seized engine.

I think a composite plug with an oring would be ok for an al-zn pan though..