Boiling brake fluid has little to do with the heat from your headers.
The heat generated in the brakes themselves during racing superheats the
fluid. If you read the info on the can of fluid you'll see it probably
has a boil point of around 300 degrees (if this info isn't on the can it
may be even less). That's not high enough for performance driving.
Change fluid. Both Wilwood and AP make dot 4 fluid in a 550 degree
range. There are even higher rated fluids (600) but they are in the $22
a pint price range. The 550 ought to suit your needs fine.
Good luck.
Larry Hoy
>Over the weekend, I tried out my new V8 on the race track and
>after a few laps noted the brakes getting a bit spongy to the
>point where you consider an extra stroke of the pedal for
>maximum brake action. I've been told by some guys who've raced
>V8s that this is due to the brake lines near the exhaust
>manifolds being exposed to excessive heat (regular block
>hugger style). Has anyone tried insulating tape on the
>manifolds as a simple measure to reduce heat under the bonnet?
>I'm only planning to take it out on the race track
>occasionally, so I don't want to modify my standard V8 brake
>set up into something expensive.
>
>Frank van Dalen
>
>P.S. Beating the 4 and 6 cylinder MG race cars down the
>straight certainly makes all that work worthwhile!
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