[Spridgets] cooling system issues revised---Help

[Kitterer Bob]

A couple of questions.

What kind of cap is on the expansion tank, screw on or pressure cap  
like the radiator ?

Is the over flow line below the cap or above it like the radiator?

If it is the latter then the pressure cap should be on the over flow  
tank and a cap to just keep the coolant in should be on the  
radiator.  In theory it should not make any difference but I found it  
did on my car. Having two pressure caps in the system just did not  
work.  Also  I have adapted a solid brass over flow tank from some  
where (1500?) to the bugeye so that may make a difference.

Bob Kitterer

1960 Austin Healey Sprite (Mk IV in disguise)
1966 Austin Healey Sprite Mk III (Trevor)
2000 Miata Special Edition




On Apr 24, 2008, at 7:32 PM, Lester wrote:

> I have similar symptoms although not as severe..  my current diagnosis
> is the my radiator cap, as yours may be, is not actually sealing on
> the inner section.  I noticed this because there is nice shiny brass
> for a section of the inner ring of the filler neck but not the entire
> way around.  My guess is that the filler neck is not "square".
>
> Lester
>
> .. no, I haven't fixed mine either..