Check out this site for a really good account of how to reduce noise.  You don't mention is
your van is air or water cooled.  "83s came both ways.

http://bulley-hewlett.com/VWindex/

Bill in the Southwest

----- Original Message -----
From: "Don Spence" <dspence@OANET.COM>
>
> NOISE LEVEL ABATEMENT!  Sorry for shouting but the ambient noise level is
> very high in the van. Lots of thumps and whumps over bumps.  All the
> cabinetry is solid, the hatch is tight, but I get major rattles over tar
> strips. It could be the rear seat/bed. Any hints on tightening or dampening
> this area.
>
> Jack/tool stowage: Where is the tool bag supposed to go? Currently on he
> upper shelf inside back door but it thumps here.
>
> Already figured I'll have to put a dish towel between the stove and stove
> top when travelling as a damper.
>
> Any other ideas on how to keep the noise level down.