S4 intake mounting bolt size?

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01-07-2010, 11:33 PM

Glenn M

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S4 intake mounting bolt size?

I looked thru PET and can't find what size the intake mounting bolts are. I plan on replacing with SS.

Thanks!

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01-07-2010, 11:39 PM

Rob Edwards

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They're studs, M8 x 40 (999 223 002 02). PET is misleading, as they're listed on the cylinder head page.

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01-08-2010, 12:02 AM

Glenn M

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Rob,
Thanks, what is the thread pitch for the nuts?

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01-08-2010, 12:20 AM

Rob Edwards

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M8 x 1.25.

EDIT: I ASSume both ends of the studs are 1.25 mm pitch. The upper half that the intake nuts attach to are 1.25, not 100% sure about the lower half of the stud that inserts in the head.

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01-08-2010, 02:35 AM

GregBBRD

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Quote:

Originally Posted by Rob Edwards

M8 x 1.25.

EDIT: I ASSume both ends of the studs are 1.25 mm pitch. The upper half that the intake nuts attach to are 1.25, not 100% sure about the lower half of the stud that inserts in the head.

That's right. Lo mismo.

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