glad to see someone say something like this. The only reason regular cars ever have insulated exhaust pipes that I am aware of is to maintain exahsut heat to keep the cat well lit and catalyzing. Or you could want to retain a lot of heat to help get better fuel mileage. but I don't actually see how insulating the exhaust pipes is going to help the engine stay cooler............and wasn't that the original concern ? scott ----- Original Message ----- From: "John Rodgers" <inua@CHARTER.NET> To: <vanagon@GERRY.VANAGON.COM> Sent: Tuesday, July 15, 2008 7:35 PM Subject: Re: Fiberglass Exhaust Wrap - Cooler engine compartment
>A caution. > > Often, exhaust systems are designed to utilize the free air to help keep > them cool. It does pretty well as long as the vehicle is moving right > along, but get slow or stop and the heat is not carried away but > collects in the engine space, making it mighty hot. It is all a trade > off. If you wrap the exhaust with any kind of insulating material you > are going to really cook the devil out of those pipes when running at > power - which is the time you really want them to be cooling in the > breeze and getting all that heat carried away. The exhaust system will > burn out much, much sooner than if simply let exposed to the ambient air. > > So be careful in your choices on your Vanagon. > > Regards, > > John Rodgers. > > Chris S wrote: >> Is anyone here using fiberglass exhaust wrap? Any comments and/or >> experiences? >> >> I'm thinking of wrapping the entire exhaust up to the catalytic >> converter. >> Also I'd like to insulate the intake runners and place some insulating >> mat >> between the fuel lines and the engine. >> >> Chris S. >> >> >> |
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