There are a number of issues here. The biggest problem is the air
temperature under the bonnet. A secondary problem is the temperature of the
fuel.
Using a fan to blow more air under the bonnet isn't going to be particularly
successful unless that fan is extremely efficent because the hot air has no
easy way of escaping. If you look at racing Sprites and Midgets they adopt a
number of diverse approaches to letting the hot air OUT of the engine bay.
You might not want to adopt such an approach and even in stationery traffic
it won't fully cure the problem.
Heat management is the best answer IMHO and a coating on the inlet manifold
is by far the best approach as it has no negative aspects and really does
work. Coating the exhaust manifold - jet hot coating or whatever will also
work but ultimately shortens the life of a header and supposedly can warp the
stock iron manifold (once you get it off you never get it back on again - I
read this in a book).
You can of course run the fuel through a tiny oil cooler but in traffic I
doubt this will help much.
RS
/// unsubscribe/change address requests to majordomo@autox.team.net or try
/// http://www.team.net/mailman/listinfo
/// Archives at http://www.team.net/archive/spridgets
|