Matt H Posted November 12, 2010 Share Posted November 12, 2010 And what powers the fans and electric water pump? While you might see some gains, you still have to power the units and that means an alternator will now get the load instead. Even though this 13 is probably unrealistic. I reckon there will be a slight advantage as the fans won't be running when the car is in flight, so the alternator may not take a hit when it matters? It's all very swings and roundabouts though really. The only reason I'm interested in elec fan kits is for asthetics. They certainly finish an engine bay off. Link to comment Share on other sites More sharing options...
David P Posted November 12, 2010 Author Share Posted November 12, 2010 The number '13' was for water pump and viscous fan. I recall that it is around 1 bhp of parasitic loss per 25 amps to drive the alternator. Hope I don't have to provide a dynograph to support that comment. Link to comment Share on other sites More sharing options...
Dnk Posted November 12, 2010 Share Posted November 12, 2010 Whatever the numbers i'd much rather have the car with its o/e water pump and viscous fan, proven reliability at the expense of a couple of hp. If its a track car or drag car then fine but for the rd i feel its only worthy reason is possibly cosmetic. Look forward to seeing the dyno print out, with and without the viscous fan Link to comment Share on other sites More sharing options...
jagman Posted November 12, 2010 Share Posted November 12, 2010 electrical water pump is not a great idea Link to comment Share on other sites More sharing options...
Dnk Posted November 12, 2010 Share Posted November 12, 2010 electrical water pump is not a great idea Why ? plenty of ponds have them Link to comment Share on other sites More sharing options...
Nic Posted November 12, 2010 Share Posted November 12, 2010 They help improve engine cooling & performance by delivering more air to the radiator and driving out excess heat I notice on the add it doesn't state the quantity of air the fans flow. They will not flow more air than the stock viscous fan/shroud, so how can they claim they improve engine cooling? Link to comment Share on other sites More sharing options...
jagman Posted November 12, 2010 Share Posted November 12, 2010 The whole cooling system is simple, but misunderstood , I may do write up to explain in simple terms the importance of getting it right , especially with upping power levels , most after market is likely to harm ,more than help and unbalance things . Link to comment Share on other sites More sharing options...
Guest blueangel Posted November 25, 2010 Share Posted November 25, 2010 ive just taken delivery of mine quality looks good so far probally will change the fans but the price was worth it for the shroud Link to comment Share on other sites More sharing options...
Dnk Posted November 25, 2010 Share Posted November 25, 2010 Doesnt the shroud seriously screw up any natural airflow through the rad ? When i had twin Kenlows on my off roader they fitted to a frame, not a sealed box. Just a thought. Link to comment Share on other sites More sharing options...
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