Some of these cars came with fan clutches, and the damn things never worked
right. My '68 2000 had one with a 7-blade fan, and the clutch would bust on
it resulting in overheating. Since switching to a 4-blade non-clutch fan
with a recored radiator my 2000 runs real cool.
My question is, has anyone installed an alternative fan clutch for our
roadsters that works well enough to re-capture the lost HP at high-speed,
while cooling the engine at idle?
Fred - So.SF
----- Original Message -----
From: "Brian Hollands" <bholland@hayes.ds.adp.com>
To: "Datsun Roadster Mailing list" <datsun-roadsters@autox.team.net>
Sent: Wednesday, April 25, 2001 7:19 PM
Subject: RE: Cooling
> The below is correct but overlooks one thing. The electric fan only runs
> (draws HP via a greater load on the alternator) when the fan is running.
> The HP gain, however small it may be, comes from the fact that at any
speed
> above about 30 mph there is enough airflow across the radiator to keep the
> coolant temp below the fans switch on point. The fan should run only when
> your stopped or driving slowly thus at speed, you use less HP to run
> accessories.
> That's the idea anyway.
> Brian
>
> -----Original Message-----
> From: owner-datsun-roadsters@autox.team.net
> [mailto:owner-datsun-roadsters@autox.team.net]On Behalf Of Ryan, Richard
> Sent: Wednesday, April 25, 2001 7:31 PM
> To: 'CalSpeed@aol.com'; dneuman@hodge.sfsu.edu; datsunmike@nyc.rr.com
> Cc: datsun-roadsters@autox.team.net
> Subject: RE: Cooling
>
>
> To evaluate the performance change--
>
> Yes, it takes energy to run any fan. Maybe only a small amount (my guess,
1
> to 1.5 HP). So the question is "Where do you want to get the HP from?
> Directly from the car's motor or the electrical system (electric fan)?"
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