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Stripped Sump Plug Thread!


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#1 Someone called James

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Posted 13 November 2017 - 12:28 AM

Yes, here is another one of these topics! 

 

The thread for the Sump Drain Plug has completely stripped on the gearbox I'm currently rebuilding, not helped by the fact that a previous owner had used a Ford sump plug with a completely different thread size! As for repairing it, I think I have a couple of options:

1. Use a helicoil and keep using the standard mini sump plug (not the Ford one I removed!)

2. Use a bigger sump plug from another manufacturer (eg: VW, etc. One that's easily available and "off the shelf") and drill the hole out and re-tap the threads. 

 

I remember seeing another thread on here about doing option 2 using a repair kit bought off eBay and it working well but the sump plugs didn't have any magnets and I'd like to use a sump plug with a magnet. 

 

Which option would be better in the longer term? (The gearbox and engine will be used in a Daily Driver but that probably won't make any difference)

 

Thanks,

James. 


Edited by Someone called James, 13 November 2017 - 12:47 AM.


#2 nicklouse

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Posted 13 November 2017 - 12:32 AM

The copper Washer used on the Plug from the factory is also the same as those used on the Oil Pipe (to the Oil Filter) Banjo fitting, I wonder if that's why they used them?
 
I did try Helicoils years ago and had limited success with them, and many others I've come across also seem to always have a drop of Oil on them. A few also pulled out, sometimes leaving things in a worse state.
 
These days, I make and fit an insert, and so far, been very happy with them, only now I've gone away from the copper washers to the fibre types
 
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#3 SolarB

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Posted 13 November 2017 - 09:27 AM

I'd be inclined to stick with the Mini item but move to an O ring or fibre washer. A copper washer for this particular application is complete overkill.






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