R50/53 R53 cylinder head bolts

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Mar 9, 2020 | 06:26 PM

airforcemajor

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R53 cylinder head bolts

I’m replacing my 2005 R53’s head. I bought the 10, M10 “head bolts” but not the 2,M8 “timing chain housing mounting bolts”.

I can’t find a source for these two bolts, does anyone have any leafs?

Thanks in advance.

Mar 9, 2020 | 07:22 PM

BlwnAway

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From: Arnold, MO.

Question, are you replacing then because you don't have them, or because of the "one time use" thing.
the timing cover bolts aren't one time use, just the M10 Head Bolts.
Those are just a M8 x 45mm Flange Head Bolt.

Last edited by BlwnAway; Mar 9, 2020 at 08:35 PM.

Mar 10, 2020 | 05:38 AM

airforcemajor

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I am replacing them because Bentley says to discard the old ones. This has been a long and expensive project and I am, perhaps, being a bit over cautious.

Mar 10, 2020 | 05:53 AM

BlwnAway

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From: Arnold, MO.

Those bolts don't hold cylinder pressure so you can reuse them.

Mar 10, 2020 | 06:17 AM

airforcemajor

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Good to know, thank you.

Mar 10, 2020 | 07:06 AM

cooper48

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From: DFW, TX

Ace Hardware is a great place to find metric bolts (including Grade 8). They even carry a full line of chrome bolts for dress-up purposes. Used them all the time when I had my Harley.