I have a '85 Nissan pickup. I wonder if anyone can tell me what size the bolts are the hold the exhaust manifold to the block? For some reason 3 are missing and there's a pretty bad exhaust leak. I've tried 8MM X 1.25 X 30, 8MM X 1.25 X 40 and 5/16-18. The 8X1.25 and the 5/16-18 start to thread in but stop after about 2 turns.
Auto Zone didn't have any other sizes that were close.
Thanks in advance for your help.
Ron
are they broken off inside?
Sure there's not a busted bolt in the hole?
You may need to chase the threads with a bottoming tap.
Pull one of the other bolts and take with you.
And is it indeed a bolt and not a stud?
Your Nissan dealer can come up with the RIGHT part.
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