Back of Cylinder Head LEAK
TECH Addict
Joined: Oct 2016
Posts: 2,513
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From: PDX-OR-USA
If you chase the threads use a "bottoming tap" to finish, it will make sure the threads are clean clear to the end of the cut, typically you have to use a standard tap first then he bottoming tap to finish.. Good luck..
It is a wall with threads in it, I don't think you need a bottoming tap for this. Obviously don't run the tap into the other side of the coolant passage.
Make sure you get a 3/8 straight thread tap, they are not standard tapered threads.
Personally, get it swapped to running AN fittings and goop em up
Make sure you get a 3/8 straight thread tap, they are not standard tapered threads.
Personally, get it swapped to running AN fittings and goop em up
Thread Starter
Teching In
Joined: Aug 2017
Posts: 19
Likes: 0
Sorry to bring up an old thread. But I’ve had school and work. I really don’t want to take the heads back off, also I would rather not tap the hole with it bolted to the motor haha. So what if I just cut off a couple threads then deburred and sanded the bolt to mimic the factory ones just shorter.
Sorry to bring up an old thread. But I’ve had school and work. I really don’t want to take the heads back off, also I would rather not tap the hole with it bolted to the motor haha. So what if I just cut off a couple threads then deburred and sanded the bolt to mimic the factory ones just shorter.
The bolts you are using now are longer than the OEM factory ones?
