to AST or not AST?

[hairyhoover]

The issue is that the water pump creates little bubbles at high rpm with the standard pulley (theres a word for it but cant recall at the moment).
 
The larger pulley should help reduce this making it safer to run without a AST

[Paul-Tll]

I think the word is \'Cavitation\' sp?, I think Mazda fit it as a belt and braces mod to \'help\' with cooling. Removing it all together would benefit only as removing some more \'weak\' links as you would save on hoses and a few more joints in the system, and possible AST and cap failure, not what you want on a track car ?
P.

[hairyhoover]

thats the word!

[Aceman]

Mine\'s eliminated - posed me no issues now for around 1000 miles so far..

I guess I followed the way it\'s done using the FC filler neck, but tapped into the standard filler neck as so: