Never had a problem w/vapor lock on my 66 w/electric fan. In fact adding the
fan eliminated my vapor lock problem when stuck in traffic.
I modified a 260 alternator to fit and it supplies enough power.
Mike
----- Original Message -----
From: "Graeme Suckling" <graemes@saonline.com.au>
To: "'Jessica'" <windsurfer@mindspring.com>; "Datsun Roadsters List
(E-mail)" <datsun-roadsters@autox.team.net>
Sent: Tuesday, January 14, 2003 7:57 PM
Subject: RE: Fan and fan shroud
> Hi there list,
> I read an interesting article only yesterday in my January 2003 DSOA
> Newsletter on the pros and cons of thermatic fans on Roadsters.
> The short answer is:- " The fan, apart from cooling the radiator,
> provides a steady stream of air that keeps the carburtors cool and
> stop the fuel from vaporising."
> There is also the issue of current draw and the ability of the
> alternator (stock) to handle it.
> The bottom line is:- "The best alternative and one that does not rob
> as much HP as a fixed fan is a viscous coupled fan. This seems to
> provide the best compromise".
> (This theory would apply equally to twin carb Z cars as well.)
> I had already fished a 2nd hand viscous hub seven bladed fan out of
> the "Parts Bin" which is nearly the same diam. as the fixed blade fan
> and guess what, the 4 hole mount matches the water pump flange
> perfectly!!
> Don't you just love the design of Datsuns:)
> At worst I'll have to trim the blade length but I have to get my fan
> shroud first, it is still in the USA.
> Regards,
> Graeme Suckling
> 1965 SP310 - under construction DSOA Member # 112
> 1971 P510 4 door - daily driver, original owner, highly modified.
> 1972 P510 2 door - in storage.
> 1973 HS30/240Z - re-building to 2003 specs.
> Adelaide, South Australia.
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