Dan16v Posted October 10, 2015 Share Posted October 10, 2015 Afternoon allJust doing the annual service on the GT6, its the first time I have tried to remove the sump plug since owning the car and its stuck solid. I've read a fair few posts about how people have gotten them undone, a fair bit of heat on it though doesn't seem to make any difference, although its a bit limited how much leverage I can get on the 11mm spanner.Looking at the plug it doesn't seem to go in square to the face of the sump, its more noticeable when the spanner is on it than you can see in the picture below, but being tapered do these things still seal up if cross threaded? or in general are the sump plug holes not square to the raised face? Given it was serviced only 12 months ago, it should have been off recently so im surprised its that tight. Quote Link to comment Share on other sites More sharing options...
ferny Posted October 10, 2015 Share Posted October 10, 2015 They're 7/16, unless my brain is going wonky. Looks fairly rounded now. Try tightening it which requires less energy and could free it off enough to let you undo it. Quote Link to comment Share on other sites More sharing options...
Dan16v Posted October 10, 2015 Author Share Posted October 10, 2015 Quoted from ferny They're 7/16, unless my brain is going wonky. Looks fairly rounded now. Try tightening it which requires less energy and could free it off enough to let you undo it. Since its been rounded before the 11mm seems to fit a little better, but in the 2nd position on the other 2 flats the spanner fits tightly.I did give it a go tightening it first before then trying to back it off, but not any luck Quote Link to comment Share on other sites More sharing options...
Dan16v Posted October 10, 2015 Author Share Posted October 10, 2015 Quoted from ferny They're 7/16, unless my brain is going wonky. Looks fairly rounded now. Try tightening it which requires less energy and could free it off enough to let you undo it. Since its been rounded before the 11mm seems to fit a little better, but in the 2nd position on the other 2 flats the spanner fits tightly.I did give it a go tightening it first before then trying to back it off, but not any luck Quote Link to comment Share on other sites More sharing options...
WIMPUS Posted October 10, 2015 Share Posted October 10, 2015 Otherwise.. weld a nut on it if it's get to rounded.My old drain plug was like this. Quote Link to comment Share on other sites More sharing options...
Rubce Posted October 10, 2015 Share Posted October 10, 2015 Hammer a suitably sized socket onto the plug and hey presto you should be able to remove it. I used that trick on the diff plug on my Stag.Good luckBruce Quote Link to comment Share on other sites More sharing options...
Dogsbody47uk Posted October 10, 2015 Share Posted October 10, 2015 Mole grips are usually quite effective. Quote Link to comment Share on other sites More sharing options...
Nick Jones Posted October 10, 2015 Share Posted October 10, 2015 Tapered thread and done up too tight. Don't bother trying to tighten - that trick doesn't work with tapers. Suitably sized stilson wrench or weld a nut on it. Attempting to remove it while the engine is hot may help a little. Suggest replacing with a magnetic sump plug with 3/4" (19mm) hex head.Nick Quote Link to comment Share on other sites More sharing options...
MarkB Posted October 10, 2015 Share Posted October 10, 2015 HiI bought one of these http://www.ebay.co.uk/itm/TRIU.....?hash=item567cbcc661a couple of years ago as the main problem is getting a good fitting spanner before it starts to round off. In your position I would use a mole grip /vice grip quality tool not a cheapo type and get it locked on flat tight and square. Alternatively a quality pair of stilsons.Mark Quote Link to comment Share on other sites More sharing options...
esxefi Posted October 11, 2015 Share Posted October 11, 2015 and,before you fit the new one,clean and degrease the threads then fit the plug with some thread lock.it will help seal and will not need to be over tightened making future removal a lot less hassle. Quote Link to comment Share on other sites More sharing options...
Dan16v Posted October 11, 2015 Author Share Posted October 11, 2015 thanks all, well i tried yet more heat and the spanner would hold on it ok but even with a bit of pipe over the spanner to get a bit more leverage, still no luck, even hitting the spanner with a decent weight mallet wouldn't shock the taper undone didn't do anything.The problem is also getting it high enough off the ground to get a good sized pair of stilsons on it, unfortunately I don't have a pit or a decent set of ramps so getting more leverage on it is trick - i don't suppose anyone local to me (im near Sandhurst in Berkshire) has a pit and a good sized pair of stilsons?Thanks for the tip on the magnetic sump plug with 3/4" (19mm) hex head, sounds much easier Quote Link to comment Share on other sites More sharing options...
cook1e Posted October 11, 2015 Share Posted October 11, 2015 Get a proper socket which is the correct tool for the job, my socket set (which is a good quality one) includes 4 sided sockets in 3/8, 1/2 and 9/16 sizes. This allows proper contact without rounding off and more force to be applied. However I'm not sure whether there is enough clearance on a Spit/GT6 between the sump and the chassis rail to use a socket and ratchet/breaker bar so you may have to raise the engine. Quote Link to comment Share on other sites More sharing options...
yorkshire_spam Posted October 11, 2015 Share Posted October 11, 2015 When mine had a stuck sump plug I took the risk and put an oversized half nut over the sump plug and then welded the two together, that gave a good sized hex for me to use to unfasten it.Obviously that meant I had to replace the sump plug. And you have to be careful not to set fire to anything! Quote Link to comment Share on other sites More sharing options...
Dan16v Posted October 11, 2015 Author Share Posted October 11, 2015 Quoted from cook1e Get a proper socket which is the correct tool for the job, my socket set (which is a good quality one) includes 4 sided sockets in 3/8, 1/2 and 9/16 sizes. This allows proper contact without rounding off and more force to be applied. However I'm not sure whether there is enough clearance on a Spit/GT6 between the sump and the chassis rail to use a socket and ratchet/breaker bar so you may have to raise the engine. yes, clearance to it is a pain, you cant get a 3/8 to 1/2 converter on it to put the longer bar on, I will have a look out for some 1/2 inch drive 4 sided sockets, but it will be a tight fit Quote Link to comment Share on other sites More sharing options...
yorkshire_spam Posted October 11, 2015 Share Posted October 11, 2015 I find one of these (assuming it's 1/2" square) handy for this sort of thing:http://m.ebay.co.uk/itm/vintage-king-dick-screw-jack-ratchet-handle-jaguar-toolkit-/351537212885 Quote Link to comment Share on other sites More sharing options...
drofgum Posted October 12, 2015 Share Posted October 12, 2015 Quoted from yorkshire_spam I find one of these (assuming it's 1/2" square) handy for this sort of thing:http://m.ebay.co.uk/itm/vintage-king-dick-screw-jack-ratchet-handle-jaguar-toolkit-/351537212885 yorkshire_spam,Ferny was correct in reply 1. It is 7/16"square.Cheers,Paul Quote Link to comment Share on other sites More sharing options...
nang Posted October 12, 2015 Share Posted October 12, 2015 Sorry, but the horrible plugs are 7/16" square. Stillsons or a drill I'm afraid, unless you can get a decent weld on them or hammer a smaller socket on.Tony. Quote Link to comment Share on other sites More sharing options...
andy thompson Posted October 12, 2015 Share Posted October 12, 2015 I use this for the plugs not yet replaced with something better - I have about 20 plugs in total between my vehicles so the socket made more sense than replacing them Quote Link to comment Share on other sites More sharing options...
Pete Lewis Posted October 12, 2015 Share Posted October 12, 2015 Tssc shop sell a quick drain plug which makes all this hassle a thing of the past, but its needs the old plug out to fit one ,,,,,, can you park it on a kerb to get more room underside ?pete Quote Link to comment Share on other sites More sharing options...
mikeyb Posted October 12, 2015 Share Posted October 12, 2015 Quoted from andy thompson I use this for the plugs not yet replaced with something better - I have about 20 plugs in total between my vehicles so the socket made more sense than replacing them Isn't that Global Shipping program a rip off! Quote Link to comment Share on other sites More sharing options...
bob dunn Posted October 12, 2015 Share Posted October 12, 2015 Go to a garage and get them to change the oil. Quote Link to comment Share on other sites More sharing options...
Sheepy Posted October 12, 2015 Share Posted October 12, 2015 Quoted from bob dunn Go to a garage and get them to change the oil. yes but then thezy may ruin it even more, or worse completely mess it and the sump up!i have a set of sockets at home, that have a grip pattern on the inside for just that purpose. as you turn the socket like you are undoing a bolt, the socket grips and undoes the bolti will have a look to see what make they are!cheersshaun Quote Link to comment Share on other sites More sharing options...
Clive Posted October 12, 2015 Share Posted October 12, 2015 I have a set of snap on ones (actually made by Irwin!)If you get the plug out (and you will, I find stilsons best. Pete had to make a socket up out of serious steel, and even put a taper on the socket) I would use a gearbox plug. Hex head and a magnet attached. All good! Quote Link to comment Share on other sites More sharing options...
Sheepy Posted October 12, 2015 Share Posted October 12, 2015 Not had a chance to look yet, but this is the sort of thing.Various makers, but if you type into your search "stud extracting sockets" or something along those lines you should find them.Or as said above, some decent stilsons Quote Link to comment Share on other sites More sharing options...
Dan16v Posted October 12, 2015 Author Share Posted October 12, 2015 Quoted from cliftyhanger I have a set of snap on ones (actually made by Irwin!)If you get the plug out (and you will, I find stilsons best. Pete had to make a socket up out of serious steel, and even put a taper on the socket) I would use a gearbox plug. Hex head and a magnet attached. All good! Stilsons ordered, new magnetic sump hex plug ordered, just need to find a bit more height to get under it a bit more.......I do miss having a inspection pit in my garage, it made these jobs so much easier Quote Link to comment Share on other sites More sharing options...
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