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[Agemo]

OK I have converted a wheel stud into a sump plug, and it seemed a decent job. I now have transport, so will go looking for Helicoil kits. I wasn't sure about the idea, but now I am convinced they are an improvement, not a bodge. Thanks for the tips gents.
 

[Marks DTM Calib]

You can use my kit if you want, think it even has a spare sump plug with it.

[Agemo]

Very kind offer there Mark, but I have too much respect for other peoples tools, I will find a set at a reasonable price. Where are you by the way?

[Marks DTM Calib]

Nottingham

Its not a huge item so could be posted and as its an alloy sump its not like you will wear it out 

[Marks DTM Calib]

I have a kit similar to this:

http://www.ebay.co.uk/itm/15-Piece-Thread-Repair-M14-x-1-25-x-12-4mm-Helicoil-/190496754547?pt=LH_DefaultDomain_3&hash=item2c5a7dcb73

And then use one of these:

http://www.ebay.co.uk/itm/Sump-Plug-Washer-Rover-Citroen-Peugeot-M14-SP6-/270771073209?pt=UK_DIY_Material_Nails_Fixing_MJ&hash=item3f0b36b0b9

[TheBoy]

12.5mm will be fine in alloy to as when you use a 12mm the tap just removes the extra 0.5mm.

I  ave used a spark plug helicoil (as its a more useful kit to have!) and a peugeot sump plug (pretty sure its a pug one)

Yes, it is one of the pug one.  Can't remember which, but seem to recall it being a 12x1.25 thread, and dealer found one easily.


Not point not helicoiling, as those BMW sumps are made of monkey metal, and just retapping larger WILL eventually strip again.

[Agemo]

Thanks Mark, but I have seen them on ebay & they are not that expensive. This one is the right size:- http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=260816553220&ssPageName=STRK:MEWAX:IT#ht_3448wt_1139   Hardly worth you posting & me returning it. (I would replace your actual coils) Thanks for the offer though.
If I use the above kit, I will keep the original sump plug. (M12x1.5)
Good point TB, nothing to gain by just tapping a bigger hole, Helicoil makes it stronger, sounds ideal. I was concerned about the swarf, but as said, it will be falling out of the hole, plus I can flush the sump with some cheapo oil.
 

[Seth]

This is what I now use for changing the engine oil Glen

Click:  http://a2zshop.org.uk/shop/article_a829/DRAINAGE-OIL-FLUID-EXTRACTION-EXTRACTOR-SYPHON-PUMP-AM-TECH.html?pse=apq

Worth every penny!

[Agemo]

Nice piece of kit, I like the idea, does it handle HOT oil OK? 

[Seth]

Nice piece of kit, I like the idea, does it handle HOT oil OK? 

Absolutely perfectly Glen!

And it extracts all the oil, bar a cup-full (literally) from a TD!

[Agemo]

Brilliant, however that last cupful is the most important bit to get out. I suppose we never really know exactly how much sludge we are leaving in though.
I must look into it. 

[TheBoy]

Good point TB, nothing to gain by just tapping a bigger hole, Helicoil makes it stronger, sounds ideal.

When MDTM helicoiled my tractor (stripped thread, retapped larger, stripped again (and this was the 2nd sump I had that was stripped)), I put on a quick drain sump plug.

This hung a tad low, and I caught it at around 80mph, as the car regained contact with the tarmac on a spirited drive.  The sump plug itself was never found, but the helicoil was undamaged.  Slapped in a spare spark plug (same thread), filled with oil, drove home

[Agemo]

Hell! You were very very lucky! Never heard of the "quick drain plug" but I did think of fitting a valve instead of the plug. Decided against it because it would hang down a little. Can't believe the Helicoild wasn't stripped out! Spare spark plug - Brilliant, man after my own heart.
 
EDIT - Just looked up what these quick drains are, yes I was thinking of a valve like that, but didn't want it protruding downwards, for obvious reasons! I did think of an M&F elbow which could then have a valve fitted horizontally. Will got Helicoil soon.

Good point TB, nothing to gain by just tapping a bigger hole, Helicoil makes it stronger, sounds ideal.

When MDTM helicoiled my tractor (stripped thread, retapped larger, stripped again (and this was the 2nd sump I had that was stripped)), I put on a quick drain sump plug.

This hung a tad low, and I caught it at around 80mph, as the car regained contact with the tarmac on a spirited drive.  The sump plug itself was never found, but the helicoil was undamaged.  Slapped in a spare spark plug (same thread), filled with oil, drove home

[Seth]

Brilliant, however that last cupful is the most important bit to get out. I suppose we never really know exactly how much sludge we are leaving in though.
I must look into it. 

Ours gets an oil/filter change every 2500 miles anyway, so I ain't bothered by this.

Both TD sumps that I've looked inside have been spotless and completely sludge free.

[Agemo]

Brilliant, 2,500 miles, no problem then.
Nice to hear about your clean sumps, if mine was easy to remove, I would love to have a look. I suppose the suction pipe will be plastic, so you can "hoover" the bottom a bit anyway!

Brilliant, however that last cupful is the most important bit to get out. I suppose we never really know exactly how much sludge we are leaving in though.
I must look into it. 

Ours gets an oil/filter change every 2500 miles anyway, so I ain't bothered by this.

Both TD sumps that I've looked inside have been spotless and completely sludge free.