Dalai Lama Posted September 25, 2011 Share Posted September 25, 2011 I am in the process of fitting an exhaust temp gauge. The instructions suggest drilling into the turbo housing and taping a thread to fix the temp probe. I was looking at the turbo on my 300 tdi and wondering whether I can just drill through the blanking plate on the EGR and using that instead of drilling through the housing Any one know if this is okay Cheers Ashley Quote Link to comment Share on other sites More sharing options...
jad Posted September 25, 2011 Share Posted September 25, 2011 thats fine best to take the egr plate off first so u dont get swarf in the turbo or drill it with the engine runing..... Quote Link to comment Share on other sites More sharing options...
western Posted September 25, 2011 Share Posted September 25, 2011 you may find these threads worth reading http://forums.lr4x4.com/index.php?showtopic=18350 http://forums.lr4x4.com/index.php?showtopic=1298 Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted September 25, 2011 Share Posted September 25, 2011 That's how I did it Ashley, it's quite straightforward. Mo Quote Link to comment Share on other sites More sharing options...
Lars L Posted September 26, 2011 Share Posted September 26, 2011 Me too... But I wonder if welding in a piece of female threaded tube at an angle like White 90 has done would make any difference. With the thermocouple is put straight in, it really doesn't get into the exhaust stream but rather into the pocket below where the EGR valve sat. But I assume the temperature will be the same there as further into the manifold... Quote Link to comment Share on other sites More sharing options...
rusty_wingnut Posted September 26, 2011 Share Posted September 26, 2011 For this reason I put mine straight into the manifold Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted September 26, 2011 Share Posted September 26, 2011 Mine is in through the egr blanking plate, I put it at an angle to get the tip into the flow of gasses. If you don't have the tools to weld it in at an angle you can always put it in straight and then bend the actual thermocouple (carefully!) Quote Link to comment Share on other sites More sharing options...
Lars L Posted September 26, 2011 Share Posted September 26, 2011 I'll send an e-mail to Auber and ask if it's OK to bend it. Quote Link to comment Share on other sites More sharing options...
Dalai Lama Posted September 26, 2011 Author Share Posted September 26, 2011 Thanks everyone Thats helpful Now, I've ordered a blanking plate off ebay so I can sort it out before removing the old plate One other question - do I drill and then tap into the plate or can I drill the plate and bolt the probe through it. Is the plate thick enough to be tapped or do I weld a bolt ontop and srew the probe into the bolt Cheers Ashley Quote Link to comment Share on other sites More sharing options...
Lars L Posted September 26, 2011 Share Posted September 26, 2011 I suppose that the plate is thick enough to tap. I made my own from 4 mm flat iron bar and tapped, no problems. BTW, got a reply from Auber saying that the probe is OK to bend with a 15 mm radius. Quote Link to comment Share on other sites More sharing options...
Landy-Novice Posted September 26, 2011 Share Posted September 26, 2011 whats the point in fitting these? surly the temp gauge is enough? Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted September 26, 2011 Share Posted September 26, 2011 whats the point in fitting these? surly the temp gauge is enough? These give you the exhaust gas temperature within seconds, this is pretty much the closest you will get to measuring the temperature in the cylinders. The temperature changes surprisingly quickly as the load on the engine changes, you never notice this from a normal engine temperature gauge. If the temperature gets above 700 ish centigrade for a while you can melt a piston and other bits and pieces. In the mean time your normal gauge would still be showing the temp as normal. If you start adjusting your injector pump to get better performance it is very easy to raise your EGT's to dangerous temperatures and ruin your engine..... worth adding an EGT gauge before you destroy your engine. Quote Link to comment Share on other sites More sharing options...
Landy-Novice Posted September 26, 2011 Share Posted September 26, 2011 ahhh!! got it! cheers. Quote Link to comment Share on other sites More sharing options...
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