I cut a little curved area out of the ends of the fan and shaved some off
the back edges of the blades to clear the HB (similar situation as you). If
you know what a later model Pontiac fan looks like, use that as a model.
Then have the fan balanced. It seems to be working fine. I thought I might
overhead (261 motor) because of air pull loss, so I installed an electric
pusher fan. So far I haven't had to use the pusher, but it's not summer.
----- Original Message -----
From: Antonio R. Tijerino <antonio@innercite.com>
To: Ole Trucks <oletrucks@autox.team.net>
Sent: November 18, 1999 11:19 PM
Subject: [oletrucks] Cooling fan clearance.
Hi,
No I am not having a Fan clearance sale, but I am having a problem with
the stock fan not clearing the harmonic balancer. Here is the complete
story. I got the short shaft water pump to install in my '57 235 engine
that I am getting ready to drop in my '53 truck. I installed the pump
and the pulley, the pump came with a spacer that goes (finally figure
that one out!) in between the pulley and the fan, but even with the
spacer the fan does not clear the harmonic balancer. I could put the fan
in backwards, but then the airflow would be in the opposite direction.
The little piece of paper that came with the pump says to "un-tweak" the
back edge of the late model fan to clear the balancer. I wonder if
un-tweaking means changing the shape of the fan with a hammer to make it
clear.
Any other ideas or input about this one??
Thanks,
Antonio,
'53 3100
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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