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drilled hoke through head...!
Posted 04 January 2014 - 08:17 PM
Posted 04 January 2014 - 10:16 PM
Yeah you're going to want to replace that head. Unless someone knows of some magic way to fix it.
Edited by Vegablade, 04 January 2014 - 10:18 PM.
Posted 05 January 2014 - 01:44 AM
Posted 05 January 2014 - 02:22 AM
If you've just drilled into an oil gallery it should be alright. It's at least worth a go - if it starts leaking profusely then swap the heads.
My thoughts would be that you've possibly drilled into the exhaust port, in which case there's no need to stress, there might be a bit more turbulence in the exhaust gas but nothing that's going to slow down an EA82 any more than an EA82 already does
Use your silicone on it as it should only help with the seal.
Posted 05 January 2014 - 03:37 AM
Posted 05 January 2014 - 08:53 AM
Posted 05 January 2014 - 04:34 PM
I had something like this happen a while ago. I used some Loctite thread sealer and it didn't leak. Make sure to clean the threads with brake clean (acetone) really well. You could use a stud there so you don't have to mess with it in the future.
Posted 05 January 2014 - 05:42 PM
Posted 05 January 2014 - 08:14 PM
Posted 06 January 2014 - 10:44 PM
Go with the stud like "NUT" said....
APN is a better short
Posted 08 January 2014 - 07:23 AM
The "real" fix would be to have the head removed and have a welder fill the hole then redrilled to the original (or even new size).
However, what I would do is find an allen-headed plug, sink it as deep into the hole (with thread sealer) as it will go, then locktite the new stud in there on top of it. I think this way will give you the best chance of sealing up that oil galley.
Posted 08 January 2014 - 10:56 AM
Howbout install a small plug and hilicoil below that aplug that's 1/4 inch should still leave you room below
Posted 08 January 2014 - 11:33 AM
I did a similar repair on a motorcycle head many years ago . I threaded the hole with a tapered pipe thread and put an aluminium pipe plug in tight , cut it off flush , drilled and tapped for a new stud. Maybe a brass plug would work also.
Posted 08 January 2014 - 12:38 PM
I would use jb weld putty type to back the hole. I wouldn'y use silicone if it were an oil passage. JB will hold up to exhaust temps
Posted 08 January 2014 - 04:10 PM
fixed yet ?
are you lucky enough to have the other pair of threaded holes available, such as not have the cast iron air injection pollution control bolted in using all four threaded holes?
A fix I have seen done, once you plug the oil hole, is to cut the header pipe right through and rotate it 90 degrees and use the previously unused holes ast he new exhaust stud holes, weld the exhaust up in 90 degree twist position
Edited by jono, 08 January 2014 - 04:11 PM.
Posted 08 January 2014 - 04:20 PM
Posted 08 January 2014 - 09:52 PM
Another way to fix it is, call The Doctor's phone number, have him take you back in time in the TARDIS to when you broke the bolt. Now here is the tricky part, you have to stop yourself from drilling through the head without you seeing yourself, I'd recommend an ape suit or getting The Doctor to do it. Then go forward in time and this thread wont even exist cuz it wouldnt be a problem!
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