flyingbrick Posted June 25, 2016 Share Posted June 25, 2016 The problem is swarf falling in. Tapping braze makes the worst kind (it's like sand) Quote Link to comment Share on other sites More sharing options...
sentra Posted June 25, 2016 Share Posted June 25, 2016 sohc, you should start a company making self tapping 15.5mm sparkplugs. 4 Quote Link to comment Share on other sites More sharing options...
tortron Posted June 26, 2016 Share Posted June 26, 2016 The problem is swarf falling in. Tapping braze makes the worst kind (it's like sand) Take it apart and do it properly obviously Quote Link to comment Share on other sites More sharing options...
flyingbrick Posted June 26, 2016 Share Posted June 26, 2016 Take it apart and do it properly obviously Yeah but if you are taking it apart you may as well do it with propper insert Quote Link to comment Share on other sites More sharing options...
SOHC Posted June 26, 2016 Author Share Posted June 26, 2016 sohc, you should start a company making self tapping 15.5mm sparkplugs. Â It did cross my mind about a tapered thread self taping sparkplug Quote Link to comment Share on other sites More sharing options...
SOHC Posted June 26, 2016 Author Share Posted June 26, 2016 Is the head cast iron or aluminum? Could you braze it up and run a thread cleaner down it. Might be enough if it's tinfoil bad  Head is alooominum, I reckon if i put grease on the tap I should be able to catch alot of the swaf and a blow out and a good hard rev will get rid of the rest. 1 Quote Link to comment Share on other sites More sharing options...
SOHC Posted June 26, 2016 Author Share Posted June 26, 2016 1 Quote Link to comment Share on other sites More sharing options...
morkster Posted June 26, 2016 Share Posted June 26, 2016 Fuck that^ was weird. Magic sandpaper, glued on hap-hazard threads and all. What a fuck up. Wonder how long it lasted. Quote Link to comment Share on other sites More sharing options...
Transom Posted June 26, 2016 Share Posted June 26, 2016 I hope that was the " how not to "repair a spark plug thread video Wonder what the instructions really said ? Quote Link to comment Share on other sites More sharing options...
KKtrips Posted June 26, 2016 Share Posted June 26, 2016 Get the correct helicoil repair kit and slather the tap in some thick grease for all the shavings to stick to, instead of falling into the cylinder, cleaning it off regularly and reapplying fresh grease. I may have one in my toolbox but I'm all the way down in Wellington sorry. Â If the motor was mega dollar or in really good condition and didn't want to risk it then pull the head. Otherwise if you get a few bits falling into the cylinder then they'll burn up pretty quickly once its running.Big whoop. Â http://www.waihyd.co.nz/thread-insert-repair-kits-spark-plug-xidg60967.html 3 Quote Link to comment Share on other sites More sharing options...
fletch Posted June 26, 2016 Share Posted June 26, 2016 Turn the engine over until the inlet valves are partially open on that cylinder and put some compressed air onto a hose on the inlet manifold and pressurize the cylinder to blow out swarf. 2 Quote Link to comment Share on other sites More sharing options...
ajg193 Posted June 26, 2016 Share Posted June 26, 2016 Is JB weld electrically conductive? I'd never personally do it though... 1 Quote Link to comment Share on other sites More sharing options...
tortron Posted June 26, 2016 Share Posted June 26, 2016 Is JB weld electrically conductive? I'd never personally do it though...You can powder coat itAnd add shavings into it... 1 Quote Link to comment Share on other sites More sharing options...
flyingbrick Posted June 26, 2016 Share Posted June 26, 2016 You need a decent thickness of JB weld though. In this situation you'd have bugger all jbweld left (just a few threads after the thread is formed Quote Link to comment Share on other sites More sharing options...
SOHC Posted June 26, 2016 Author Share Posted June 26, 2016 I was just watching this guy on youtube build up a worn axle with JB weld  Quote Link to comment Share on other sites More sharing options...
ajg193 Posted June 26, 2016 Share Posted June 26, 2016 I couldn't find any JB weld when it came to fixing up the grooves in the sealing surface of the washing machine shaft. Had no access to machines so I couldn't turn up a sleeve and run a bigger seal either. Just got the hardest general epoxy I could find and it seems to be holding up half a year later (machine is 14 years old or something) Quote Link to comment Share on other sites More sharing options...
siren676 Posted June 29, 2016 Share Posted June 29, 2016 (edited) Just had one of these kits arrive at work(BNT), might be what you are after?Suits M14 spark plugs, Can do one for $20 inc gstEdit: 2nd pic didnt post, was on mobile Edited June 29, 2016 by siren676 4 Quote Link to comment Share on other sites More sharing options...
logan360 Posted July 27, 2016 Share Posted July 27, 2016 If your worried about swarf a magnet pen in there for a while moving around perhaps? Alternatively a new head isn't an overly big or expensive job. 1 Quote Link to comment Share on other sites More sharing options...
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