On 10 Jun 1997, Vincenti, Ross wrote:
> David - I have a similar problem with my Mk I Spit. I assume yours has the
> dual SU HS2 carbs, too? I can think of a couple of possibilities. (1)
> Fuel percolation due to excessive underhood heat
> As to item (1), it would be consistent with my own observations in my Spit
> where it starts missing as it gets hotter under the hood under mid to full
> throttle in the upper rev ranges. I've thought about fabricating some
> aluminum heat shields for the carbs, but I am not sure that will solve it.
> Frankly, I can't believe the car would need heat shields today if it did
> not need them 33 years ago.
This may not be as surprising as it sounds. The fuel available today is
more volatile than that sold twenty or more years. I can remember my
dad's BMW 3.0 CS needing aluminum wrapped around the fuel lines to
prevent vapor lock.
Jim Ruwaldt
'72 TR6 CC79338U(being restored)
|