Hi Serge, The stainless steel scrubs may break up over time and go through your engine.
I would stay with the spring idear or just roll stainless wire around dowle to build your own spring. regards Barry Kruyssen Cairns, Australia RAA 19-3873 [email protected] http://www.users.bigpond.com/kr2/kr2.htm ----- Original Message ----- I will add my contribution to the subject: Mark, you battled to find a spring that would fill the box and help with the heat transfer. My solution will be to close the box both sides, let the air in through plenty little holes. For a spring, I will use stainless steel scrubs (sold in France in any convenience store, that are use to scrub pots and pans), and pack them inside the box before I close it. Serge Vidal KR2 "Kilimanjaro Cloud" Paris, France.
