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The Terminator
Engine/Tuning
Mark 8 cooling fan upgrade
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<blockquote data-quote="SlowSVT" data-source="post: 15387884" data-attributes="member: 20202"><p><img src="https://lh3.googleusercontent.com/IvHQOWp2NmZtHXGts40DQ72eox_OPoXsUS3WEFT-9EBPCiPRe95zUyjMdKDKGfzgk0aoaRVdwWh84mQIPYqw5Tpoww7mmxHhb6OX4RNe1psa1z_rWHYa748sjFpBUBZIO5vb9eaAId8SXdtv5xxdz_K-2FIqeZe4RbUHhzVzquRPrHgPHE6zao0L4rOli6qz3NhC_oaUmUi7ayWt6zz282h_wu6mQRZzwL_F6eOb8_rG1fAhuJuazIVS3mGX1v1fZZQf8y8JfR_cJzEW4Fa8A2SdSXiu7Idf8NgiTmmPxP5Zi6sdxM55tC3QFOo60kcgapSYeWQK4H27PUNVCPsCl3dVsGg4anTTDsreQVKAb_pFgFCPQc5miNtJQNYaOFlI8wXHxLMAVI1mVa91mLPYlvEqbc0f2kaQv62ZPoEUR77jBTxs1dZVlk3vi-8oUsfRBIxQ-40WnYkG2Q4O6cV4LY2tHF2QcmQ8USAvkAutNF89dtI5HzPC1VhlzBaWMJIz3z7daGe-Yclz8BRZBqRcW2NLM5x42yQPJz3FcIOvkdSARSUJbDjg1FiG-NwESqXvQyZFiGSn1KEtbOARohRYcEEPHsCmcsY=w800-h600-no" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>Malcolm, nice work on the install as always.</p><p></p><p>One thing to keep in mind is this will work better when the system is cooled when the fan is needed at a stop or in slow moving traffic. At high speed the shrouding will restrict the air thru the rad due to the reduced open area behind (for optimal flow volume it should have the same or more open area behind rad as in front of it. Air can do unexpected things and I could be wrong here testing could prove this fan assembly is more effective at speed but shrouding is only useful when the fan is running and will likely impede flow at high speed.</p><p></p><p>If I recall your running E85 (which should cool things down) and high compression (which will make it run hotter). Are you using the factory oil-to-water cooler? Switching to an oil-to-air cooler will eliminate the system dumping the heat into the rad making it more effective. A dual row rad may help by doubling the cooling area and the volume of the water where the coolant will spend more time exposed to the cooling area. In theory this should cool better but sometimes it doesn't work out that way so don't take any of this as gospel.</p><p></p><p>At low speed this should work better but at high speed I cant see how a shroud will help. But in the end what matters is how the effective the systems works. Have you driven the car yet to see if it had brought down the engine temp? Should be interesting to see the results.</p></blockquote><p></p>
[QUOTE="SlowSVT, post: 15387884, member: 20202"] [IMG]https://lh3.googleusercontent.com/IvHQOWp2NmZtHXGts40DQ72eox_OPoXsUS3WEFT-9EBPCiPRe95zUyjMdKDKGfzgk0aoaRVdwWh84mQIPYqw5Tpoww7mmxHhb6OX4RNe1psa1z_rWHYa748sjFpBUBZIO5vb9eaAId8SXdtv5xxdz_K-2FIqeZe4RbUHhzVzquRPrHgPHE6zao0L4rOli6qz3NhC_oaUmUi7ayWt6zz282h_wu6mQRZzwL_F6eOb8_rG1fAhuJuazIVS3mGX1v1fZZQf8y8JfR_cJzEW4Fa8A2SdSXiu7Idf8NgiTmmPxP5Zi6sdxM55tC3QFOo60kcgapSYeWQK4H27PUNVCPsCl3dVsGg4anTTDsreQVKAb_pFgFCPQc5miNtJQNYaOFlI8wXHxLMAVI1mVa91mLPYlvEqbc0f2kaQv62ZPoEUR77jBTxs1dZVlk3vi-8oUsfRBIxQ-40WnYkG2Q4O6cV4LY2tHF2QcmQ8USAvkAutNF89dtI5HzPC1VhlzBaWMJIz3z7daGe-Yclz8BRZBqRcW2NLM5x42yQPJz3FcIOvkdSARSUJbDjg1FiG-NwESqXvQyZFiGSn1KEtbOARohRYcEEPHsCmcsY=w800-h600-no[/IMG] Malcolm, nice work on the install as always. One thing to keep in mind is this will work better when the system is cooled when the fan is needed at a stop or in slow moving traffic. At high speed the shrouding will restrict the air thru the rad due to the reduced open area behind (for optimal flow volume it should have the same or more open area behind rad as in front of it. Air can do unexpected things and I could be wrong here testing could prove this fan assembly is more effective at speed but shrouding is only useful when the fan is running and will likely impede flow at high speed. If I recall your running E85 (which should cool things down) and high compression (which will make it run hotter). Are you using the factory oil-to-water cooler? Switching to an oil-to-air cooler will eliminate the system dumping the heat into the rad making it more effective. A dual row rad may help by doubling the cooling area and the volume of the water where the coolant will spend more time exposed to the cooling area. In theory this should cool better but sometimes it doesn't work out that way so don't take any of this as gospel. At low speed this should work better but at high speed I cant see how a shroud will help. But in the end what matters is how the effective the systems works. Have you driven the car yet to see if it had brought down the engine temp? Should be interesting to see the results. [/QUOTE]
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