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Author Topic: Oil sump plug stripped thread - what are my option  (Read 3158 times)

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Christopher doc

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Oil sump plug stripped thread - what are my option
« on: 15 September 2009, 17:42:33 »
That is the last time I let a garage do a service for me. Came to change oil myself today and found sump plug stiff to undo - v suspicious and sure enough replacing it, and it won't tighten. Tried PTFE plumbers tape and got it to hold but still not fully tight - don't dare. I am just worried it will blow off whilst driving.
Any suggestions as to a fix? Is it a sump off and re-tap job or worse, a new sump!!
If I bought one of those oil change pump down the dippy stikky hole gizmos, I could permanently seal off the plug - is there a way to do that without taking the sump off?
I am open to all suggestions ...... !!
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osealy

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Re: Oil sump plug stripped thread - what are my option
« Reply #1 on: 15 September 2009, 17:57:16 »
Many may not agree with me.
I have used a pela pump on my TD for the last 60K mls. It makes oil changes easy and clean,,
I bought the pump after my last TD sump plug threaded.
I tried tapping in a drain plug but it was too low & tore out on a yump.
I would seal the plug permanently with isopon.
I did this years ago with a mirafiori sport that I ripped the sump open on.
Just clean the surround first with petrol or whatever.
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Christopher doc

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Re: Oil sump plug stripped thread - what are my option
« Reply #2 on: 15 September 2009, 18:07:52 »
Thanks for that. Sound a fix to me. You would recommend isopon rather than aralditing in the old bung?
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Pete Elite

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Re: Oil sump plug stripped thread - what are my option
« Reply #3 on: 15 September 2009, 18:35:57 »
Hi Chris, you could have a helicoil fitted, had it done on my Senator :y.
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Jimbob

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Re: Oil sump plug stripped thread - what are my option
« Reply #4 on: 15 September 2009, 18:39:38 »
Helicoil was on my mind too, you may need to tap it out and go up a size.

be much stonger than original too  :y
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Andy B

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Re: Oil sump plug stripped thread - what are my option
« Reply #5 on: 15 September 2009, 18:47:23 »
If there's suffucient metal around the sump plug, I'd just tap out a suitable size bigger .... saves you having to re-feed the Helicoil back in its thread each time you do an oil change.  ::)  :y  :y
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Christopher doc

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Re: Oil sump plug stripped thread - what are my option
« Reply #6 on: 15 September 2009, 18:51:07 »
Sounds interesting fix too. Never heard of them before - quick search shows up dazzling array of sizes, types etc. Any guidance as to just what I will need and where from?
Some talk about taps and drills - would this be a sump off job or how do you avoid the scurf getting into the engine or .... ??
Thanks guys
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rustym95

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Re: Oil sump plug stripped thread - what are my option
« Reply #7 on: 15 September 2009, 18:58:14 »
Hi you could allways use liquid metal, dont cost alot and if clean when put on it will have fresh thread use it 1s on a head bolt never went in 3years wile had the car. :y
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Pete Elite

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Re: Oil sump plug stripped thread - what are my option
« Reply #8 on: 15 September 2009, 19:30:37 »
Quote
Sounds interesting fix too. Never heard of them before - quick search shows up dazzling array of sizes, types etc. Any guidance as to just what I will need and where from?
Some talk about taps and drills - would this be a sump off job or how do you avoid the scurf getting into the engine or .... ??
Thanks guys

  Where you buy the helicoil from should be able to advise you on fitment size needed and as for going the re-tapping route any swarf should be caught by the filter :y.
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Pete Elite

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Re: Oil sump plug stripped thread - what are my option
« Reply #9 on: 15 September 2009, 19:32:35 »
Quote
Hi you could allways use liquid metal, dont cost alot and if clean when put on it will have fresh thread use it 1s on a head bolt never went in 3years wile had the car. :y

  You would have to take the sump out and thoroughly clean it to use this properly :(.
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Marks DTM Calib

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Re: Oil sump plug stripped thread - what are my option
« Reply #10 on: 15 September 2009, 19:49:08 »
Sometimes lady luck shines.

Just 10 miles up the A60 is a helicoil kit and replacement sump plug to fit.
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Andy B

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Re: Oil sump plug stripped thread - what are my option
« Reply #11 on: 15 September 2009, 19:57:02 »
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Sometimes lady luck shines.

Just 10 miles up the A60 is a helicoil kit and replacement sump plug to fit.

But if you're drilling/tapping out a bigger size for the Helicoil, why not just use a bigger sump plug?  :-/  ;)  ;)  ;)
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KillerWatt

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Re: Oil sump plug stripped thread - what are my option
« Reply #12 on: 15 September 2009, 20:15:47 »
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Any guidance as to just what I will need and where from?
Take the sump to any engineering shop that knows what they are doing, and they'll fix it in under an hour and your original sump plug will still fit.

Don't bother listening to some of the suggestions here (eg, body filler, chemical metal, etc) unless you intend to sell it as soon as you've carried out the bodge which will result in a new sump being required..
« Last Edit: 15 September 2009, 20:16:30 by KillerWatt »
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Christopher doc

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Re: Oil sump plug stripped thread - what are my option
« Reply #13 on: 15 September 2009, 20:35:27 »
Hmmmm ... lots of options to think about - well I did ask didn't I!  ;D
Thanks guys, keep them coming, the more the merrier  :y
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KillerWatt

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Re: Oil sump plug stripped thread - what are my option
« Reply #14 on: 15 September 2009, 20:45:13 »
Quote
Hmmmm ... lots of options to think about - well I did ask didn't I!  ;D
Thanks guys, keep them coming, the more the merrier  :y
You only have 3 options if you are going to do the job properly....

1. Helicoil it (original sump plug will still fit)
2. Drill & tap (will require oversize sump plug)
3. Buy a new sump
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