Some Hitachi SU's and Intakes have coolant ports.

I notice that the latter ones do not.

Is there any advantage to it or not.

Also , can a SU carb with the coolant ports be put on a

non coolant intake and visa versa.

thanks

Al

Funny, there are two other threads talking about this right now. General consensus is if you live in Alaska or Montana, you'll want them hooked up, otherwise take them off. Problem is that if you live in the snow belt, you probably have more rust then car...

I can't find the other threads.

This is what I was reading (and writing)

http://www.classiczcars.com/forums/showthread.php?threadid=36524

http://www.classiczcars.com/forums/showthread.php?threadid=35909&page=3

The early 4 screws have no provision for water into the carb base. Three screws do have the holes through the insulators into the carb base.

The flat top manifold mounting flange profile matches up with the 3 screw flange profile i.e, non symmetrical while the 4 screw flange is symmetrical. Hope that helps.