Rocket valve cups

[bsa-bill]

Hi Folks  - while I've got the head off, thought I'd check everything out while I wait for bushes arriving.
One thing I'm not 100% sure about is which way up do the bottom valve springs cups go.
I have them with the wider boss to the bottom, is this correct

[muskrat]

G'day Bill,
                I'm pretty sure the narrow side goes down. Less area for heat transfer. See which side the springs fit better.
Cheers

[dpaddock]

The bottom cup centers the springs. Fit it to do this.

David