The main function of the shroud and tins is bringing in and flowering cool air over the engine.
The engine is the heat source and all that tin is touching it which is why even the shroud gets hot in spite of all the cool air being constantly pulled in. While the primary function of the tins is not heat dissipation it is to NOT retain heat and maintain or increase the temperatures being created by the engine. Adding a ceramic coating would decrease the heat dissipation rate markedly therefore have a tendency to increase heat retention (like a soapstone stove for anyone familiar). <div>-------- Original message --------</div><div>From: "Dave C. Bolen" <[email protected]> </div><div>Date:04/19/2015 6:28 AM (GMT-07:00) </div><div>To: [email protected] </div><div>Cc: </div><div>Subject: Re: [vintagvw] Porcelain coating redux </div><div> </div>Guys, Let's think a minute here. The engine compartment is "filled" with air containing heat. You are pulling that(and fresh air) straight thru the fan and distributing it around the inside of the shroud at a pretty high rate. The sheet metal is going to be mostly the temperature of the air being pulled in by the fan and blown thru the shroud at high speed(lots of cfm). I would bet that the temp of the shoud itself would closely match the ambient engine compartment air temperature. I don't see that the coating on the shroud would help at all. Now, a coating on the inside of the cylinder head/cylinder sheet metal might do some good. Just my 2 cents, dave On Sat, 18 Apr 2015, Kyle Davis wrote: > > What I was thinking, and I guess it is wrong, would be that porcelain coating > the fan shroud would keep heat out of the cooling > system, not vice versa. > > Kyle > > -- > Visit the VintagVW archives at > http://www.mail-archive.com/[email protected] > --- > You received this message because you are subscribed to the Google Groups > "VintagVW - Air Cooled Volkswagen Discussion List" > group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/vintagvw. > For more options, visit https://groups.google.com/d/optout. > > -- Visit the VintagVW archives at http://www.mail-archive.com/[email protected] --- You received this message because you are subscribed to the Google Groups "VintagVW - Air Cooled Volkswagen Discussion List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/vintagvw. For more options, visit https://groups.google.com/d/optout.
