You are correct - the larger pulley (on the water pump) will make the
pump spin more slowly.
It will improve cooling if and only if there is cavitation inside the pump.
>From my experience this is only true on high revving motors (operating
rev range > 6000 rpm - I.e. you are using the engine at higher revs than
this most of the time). Unless you sit on > 100mph for extended stretches
or you use the motor on the track, it is a waste of money (IMHO)
Mike
-----Original Message-----
From: Evangelos G. Makris <emakris@hol.gr>
To: Mostyn <mostyn_f@email.msn.com>
Cc: SPRIDGETS <spridgets@autox.team.net>
Date: Thursday, November 05, 1998 5:41 AM
Subject: Re: cooling system question.....and more ramblings
>Mostyn wrote:
>> 6. the sugestion for a larger pully is a great one also. It should handle
>> the cavitation at higher RPM
>
>Larger pulley where? On the fuel pump, the crankshaft or the
>alternator?
>
>If my memory serves me right, a larger pulley on the water pump
>will make the fan turn slower, much like the gears on bikes, right?
>
>So, if the fan turns slower is cooling improved?
>
>Evangelos
>
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