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.
-----Original Message-----
From: owner-datsun-roadsters@autox.team.net
[mailto:owner-datsun-roadsters@autox.team.net]On Behalf Of Jessica
Sent: Wednesday, 15 January 2003 10:52 AM
To: Datsun-Roadsters List
Subject: Fan and fan shroud
I have a choice and would like a little advise. I have a 1966 SPL-311
and got
a 2000 radiator that is a perfect fit. All the bolts line up.
My question is that I now have two options:
1) I can either install my old 4 blade metal fan and radiator shroud,
all fit
perfectly or
2) The 2000 radiator came with an electric fan that covers the entire
radiator. If I use it, I would assume that I cannot use the shroud
and would
not use the 4 blade fan. It may look a bit different and I am not
sure if I
want to go that way Any suggestions?
Thanks
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