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Head bolt thread size

Old Apr 14, 2004 | 02:10 PM
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Default Head bolt thread size

I am ordering a H/C package and I am curious as to what the threads are for the head bolts. I have a fairly large tap and dye set and would rather us that rather than the cut the head bolt technique.

Anyone?
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Old Apr 14, 2004 | 02:20 PM
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Don't use taps, they weaken the threads. Taps are used to cut new threads into surfaces. What you ideally need for your job is a thread chaser or thread former, this cleans the threads without damaging or weakening them. The double shaved bolt method works great and is FAR cheaper than the thread chaser/former you'd have to buy. However, the head bolts are: 11MM x 2.0
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Old Apr 15, 2004 | 08:33 AM
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Ok makes sense. I didnt think it would stress the threads as long as you didnt force it.
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Old Apr 15, 2004 | 10:30 AM
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yah it only takes about 30 seconds with a bench grinder to do it and works real well
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