underdrive pulley and electric fan
06-02-02, 04:14 PM
#2
http://www.flex-a-lite.com/auto/blackmag.htm for the the E.F. It Is the #150 model.
And the Underdrive Pully http://www.unorthodoxracing.com/projrx7.html
And the Underdrive Pully http://www.unorthodoxracing.com/projrx7.html
06-02-02, 04:17 PM
#3
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Personally, I would not run underdrives on a street RX-7. They slow down the turning speed, and that is bad IMO for a engine that needs as strong a flow of coolant as a rex does. Also, a alt pulley is no good cuz the stock electric system blows anyway. Just my $0.02.
06-02-02, 04:30 PM
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but I thought A undrive pulley helps guard against cavation at high rpms? Are you just saying if you do a lot of stop and go driving not to put it on because it might over heat?
06-02-02, 05:24 PM
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Originally posted by turbotwista
but I thought A undrive pulley helps guard against cavation at high rpms? Are you just saying if you do a lot of stop and go driving not to put it on because it might over heat?
but I thought A undrive pulley helps guard against cavation at high rpms? Are you just saying if you do a lot of stop and go driving not to put it on because it might over heat?
06-03-02, 01:53 AM
#7
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Re: underdrive pulley and electric fan
The combination of an underdriven alternator and an electric fan will see you on the side of the road with a flat battery before you know what's happened.
Street driven cars don't have a problem with water pump cavitation because they don't spend enough time at constant high rpm.
Underdrive pulleys are just a waste of time on a street car. The gains are negligible, the downsides aren't...
Street driven cars don't have a problem with water pump cavitation because they don't spend enough time at constant high rpm.
Underdrive pulleys are just a waste of time on a street car. The gains are negligible, the downsides aren't...
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06-03-02, 07:32 AM
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06-03-02, 08:08 AM
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I have a main underdrive pully and a perma-cool finger chopper. I have not had any troubles with electrical loads and no cooling issues. According to the crappy stock guage it actualy runs a little cooler now. I had the alt pully on too, but it kinda drained when you put the lights on. Now, my car is only driven 4-5k miles a year, and never in rain or snow, and never in traffic. So a daily driven car may not react the way mine did. But if you have a "toy" like me, and you want every drop of power; go for it.
