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Guest Message by DevFuse

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Stripped Threads on Exhaust Bracket/ (Engine Block?)

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4 replies to this topic

#1 Feanor


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Posted 22 March 2014 - 09:46 PM

So, while trying to replace old worn gaskets between my exhaust pipe flanges and the outtake on my EA81 (1983 BRAT) everything went fine except for one post won't tighten all the way anymore. I cut out new gaskets on my own, but because of that one post that won't tighten, I don't have a good seal (the car's way loud now ha ha). Are the threads in this hole on the bracket or are they on the actual engine block? (do these holes even go all the way into the engine block and not just the bracket?) 


I need to know so that I can decide whether it's better to buy the brackets off of somebody or to just do a helicoil and rethread the hole. What do you guys think?

#2 UraBUS09


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Posted 22 March 2014 - 10:53 PM

They thread into the cylinder heads. Helicoil is probly best bet, don't go to big. Go too deep and you'll see water/antifreeze come out of them... Good luck!

#3 apintonut


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Posted 23 March 2014 - 12:29 AM

Take it out and get the next size bolt and tap it to that no drilling

#4 Ibreakstuff


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Posted 23 March 2014 - 12:40 AM

While helicoils can work, timeserts or other proper steel inserts will hold better and last longer. Be careful not to drill too deep into the head too either way.

#5 bratdad



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Posted 23 March 2014 - 02:39 AM

I actually cut threads into the steal flange and put in a short bolt w/ larger dia. as a temporary fix since the flange was tight against the head already. It only worked because 1 hole was still good and firmly attached to the head. When my son was ready to overhaul the engine, I did the correct fix and put heli-coils in the heads in the damaged holes.

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