Tap size for head bolts

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07-06-2005, 06:45 PM

1997formula

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Tap size for head bolts

Hi, just need to know what Tap size I need for the head bolt holes?

07-06-2005, 07:03 PM

shoebox

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Re: Tap size for head bolts

7/16-14 and use a thread chaser and not a tap. A chaser will not remove threads.

05-29-2007, 11:31 AM

kgkern01

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Location: Louisville KY

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So using a tap will tear up the threads? I've heard that you can use a cleaned up old head bolt to clean the threads, is this true?

05-29-2007, 04:06 PM

shoebox

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A tap will try to remove material. A chaser will not. A bolt will not clean threads as there are no flutes to allow the debris to be collected.

05-29-2007, 07:49 PM

kgkern01

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Good thing I found this out, but after I had already bought a tap set. Oh well. where can I get a thread chaser at?

05-29-2007, 09:48 PM

shoebox

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Location: Little Rock, AR

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Auto parts stores sell chasers...

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