Go to your friendly foam shop and try some weights out.  This is your
opportunity to optimize for a softer bed rather than a hard seat.  In my '85
the seat foam (thick sections) are about an inch higher than the back pad
due to the plywood seat back and mounting bracket taking up about 1", and
the foam there is thicker anyway.

Again, for optimizing the bed, measure the exact thickness you need on the
seat subtracting the plywood and bracket thickness. It should be 4" for the
rear and 3" for the seat. You could go 5" for the rear pad, and 4" for the
seats since you'll be making new covers anyway.

Stuart

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Alistair Bel
Sent: Sunday, May 08, 2016 1:49 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Westy foam replacement question

Time to do it, rear seat and bed foam very tired.

What's the conclusion of those who have done it? I'm thinking 36-46 lb
compression, around 2.5 lbs per cubic foot type foam.

And do I have it correct ( for the plain, not sculpted seats) that it's 4"
thick foam all round?

Not that interested in memory foam topper, just a plain old good quality
foam.

Thanks

Alistair