To prevent cavitating coolant from the waterpump I raised the system
pressure up to 10.5 PSI. That help's a lot.
To prevent overheating of the #4 cylinder you can use the water outlet of
the heater and shortcut it into the wateroutlet that is connected to the
radiator.
Chris
----- Original Message -----
From: "Henry Frye" <henry@henryfrye.com>
To: <fot@autox.team.net>
Sent: Saturday, March 26, 2005 12:55 PM
Subject: Re: FOT Project Pulley
> At 07:45 PM 03/25/2005 -0800, Bill Babcock wrote:
> > It would be a very worthwhile endeavor to get a smaller crankshaft
pulley
> >or a larger waterpump pulley. We probably need about 60-70 percent of the
> >pump speed we have now. It would require some testing and some
engineering,
> >but it seems like a worth project. Ken--have you ever considered doing
> >something to fiddle with the pulley ratios?
>
> Remember, slowing down the water pump will further reduce the coolant
> pressure in the block. You want decent coolant pressure in the block to
> quench the steam bubbles that will form, and the inherent poor coolant
flow
> towards the rear of the block makes #4 the target for localized
overheating.
>
> I'd be cautious with this approach to finding more ponies, especially if
> you have had cylinder #4 overheating issues.
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