So over the weekend I did my oil change and I guess I over tightened the oil pan drain bolt. The threads inside the oil pan came off with the bolt when I took off the bolt to inspect it. Doing some research online I found 2 options A)Replace Oil Pan or B)Helicoil. I decided to go with the Helicoil route. Our drain plugs thread pitch is 14x1.25 so I ended up buying the kit from Orileys for roughly $40.
Anyways, watched a youtube video of how to install it and everything went smoothly. I hope others out there don't do the same thing I did but it is bound to happen...
It worked well for a year but eventually the replacement threads come back out and you will have to replace that pan anyways. The heat cycling of the pan and oil getting hot/cold can/will cause the the new threads to fuse to your drain bolt.
So after a year I was forced to replace the pan. Lesson learned. (in my case it was never use a torque wrench with an extension as it will fuck up the torque value)
Thanks for the info, hopefully this helicoil will stay, I went with helicoil cause it was stainless steel, and I figured it is a spark plug replacement so it can withstand the heat cycles. I will make sure to check it frequently
Yeah,gotta be careful with those drain plug's. I hope it works for you:cheers
I have a friends K9 1K in my garage that has 4 stripped out 6mmx1.00mm oil pan bolt threads. Going to Helicoil them and hope for the best.
16.5 ft.lb or 22Nm is not much torque. Use a torque wrench. Most people strip it because they think large bolt large torque and may be used to working on steel sump panned vehicles.
I bought a bag of aluminium washers and they seal so good I never had to replace the original first one I used.
The helicoil is iffy IMO because there isn't much meat for the helicoil and there's a fair chance of leaking after the fix. A stat-o-seal might be the solution to leaks but the metric sizes are hard to come by. I think that it ought to be possible to TIG weld a new boss in place of the old. But that's a lot of work and a skilled welder is needed.
You're not the first to strip the plug. There are several threads here about it.
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