M40 Cylinder Head Tappet Pressure Spacers?

[Rizzo]

Hi everyone. I am in the process of changing my cylinder head and in the head, behind the tappets are small (spare-ish) spacers/pressure things. Does anyone know what these are, why and are they only available through bmw? They don't come with head gasket sets etc.

Thanks!

[Templ8e30]

They are called thrust pads and are also available from www.eurocarparts.com for £1.18 each (plus VAT). ECP part number 310110120.

Cheers,

Iain T

[Rizzo]

Thanks for your answer, just to confirm that we are talking about the same part:

The bit I am talking about is the square shaped spring clip that sits underneath the hydraulic tappet within the head. £1.18 seems a little expensive for the part I am talking about?! They almost look like they don't belong there because they are smaller than the actual hole they go into?

[Rizzo]

Ok. Just had a quick look and found a picture of the thrust pads, they are not the part I am looking for. It's more and more looking like these bits are not supposed to be there (unless someone knows different).

[Templ8e30]

I've had an M40 head apart before and I'm positive that the bits you describe were not there

Iain T

[smithy318i]

a picture tells 1000 words !