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What is the nut size on the exhaust manifold to precat studs?

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Old 01-13-02, 04:16 PM
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What is the nut size on the exhaust manifold to precat studs?
I traced an exhaust leak to a missing nut on one of the studs that connects the precat to the exhaust manifold. Anyone know what the proper size of the nut is so I dont have to do trial and error on a hot exhaust? This is an '86 N/A. Thanks.
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Old 01-13-02, 05:22 PM
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i believe they are 17mm
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Old 01-13-02, 05:55 PM
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Thanks for the reply, but I am more interested in the size of the thread. I believe they are M12 but I wanted to be sure.
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