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Open Track Racing
boxing in the radiator
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<blockquote data-quote="SCT2003" data-source="post: 7672184" data-attributes="member: 48701"><p>I didn't buy a hood or vents. Made them myself one lazy Saturday after a great deal of planning and research. </p><p></p><p>I made my custom vents out of aluminum and placed them near the original heat extractors. I also made water channels underneath the vents to allow water to flow to the front of the heads, not all over the rest of the engine compartment. The water channels also act as underhood scoops to direct the hot air going through the radiator out of the engine compartment. </p><p></p><p>Sitting at idle with the car running, you can see the heat rise from these vents. Put your hand behind the vents on the outside of the hood, you can actually feel the air rush out of the engine compartment when the fans kick in.</p><p></p><p>These scoops were inspired by Racebronco2 after seeing his car at a meet early last year. I thought up of the water channels because I've heard so many horror stories of rusty COP's that failed because of water getting in there on DD Cobras. Ford SVT also took a stab at something just like it during the Terminator R&D sessions in 2002 but did not put it into production. From what I understand, it worked but they didn't have the time or money to go ahead and implement it on the 2003 Cobra.</p><p></p><p><a href="http://www.ironfistleadfoot.com/images/galleries/windtunnel/windtunnel05.jpg" target="_blank">http://www.ironfistleadfoot.com/images/galleries/windtunnel/windtunnel05.jpg</a></p><p></p><p><a href="http://www.ironfistleadfoot.com/images/galleries/windtunnel/windtunnel06.jpg" target="_blank">http://www.ironfistleadfoot.com/images/galleries/windtunnel/windtunnel06.jpg</a></p><p></p><p>Basically racebronco2 has his FG molded hood vents located in the same spot and he has performed some string and data comparison tests to confirm the benefit and air flow. Also from what he has said, opening up his hood was the single best cooling mod he has made to his open track Cobra.</p><p></p><p>My car started running consistantly 10* or so cooler after opening up the hood some more. This combined with my other cooling mods have made my Cobra quite enjoyable to drive even during hot wheather after a year of chasing cooling issues. I couldn't be happier with it's current operating temperatures!!! </p><p></p><p>I'm well aware of the high-pressure cowl area. I've been around many carb equipped race cars that utilized custom aluminum air boxes to draw air from the high pressure cowl area. I've also previously owned a 1975 Camaro (350,4 bbl, 4 spd) that utilized a custom cowl hood that fed the carb plenty of fresh air.</p><p></p><p>I agree that the 03-04 heat extractors are quite functional. The only negative I can see with the OEM vents is the size, hence the reason I made larger vents and placed them directly behind the stock ones.</p><p></p><p>More and more performance cars are adding vents just after the radiator to extract heat. The aftermarket has also taken notice and many of their new hood designs are placing bigger and better functional vents towards the front of the hood.</p><p></p><p>The new pictures of the 2010 GT 500 shows a quite large(single) heat extractor vent in place of the two smaller ones on the previous model. </p><p></p><p>:beer:</p><p></p><p>Later...Dave</p></blockquote><p></p>
[QUOTE="SCT2003, post: 7672184, member: 48701"] I didn't buy a hood or vents. Made them myself one lazy Saturday after a great deal of planning and research. I made my custom vents out of aluminum and placed them near the original heat extractors. I also made water channels underneath the vents to allow water to flow to the front of the heads, not all over the rest of the engine compartment. The water channels also act as underhood scoops to direct the hot air going through the radiator out of the engine compartment. Sitting at idle with the car running, you can see the heat rise from these vents. Put your hand behind the vents on the outside of the hood, you can actually feel the air rush out of the engine compartment when the fans kick in. These scoops were inspired by Racebronco2 after seeing his car at a meet early last year. I thought up of the water channels because I've heard so many horror stories of rusty COP's that failed because of water getting in there on DD Cobras. Ford SVT also took a stab at something just like it during the Terminator R&D sessions in 2002 but did not put it into production. From what I understand, it worked but they didn't have the time or money to go ahead and implement it on the 2003 Cobra. [url]http://www.ironfistleadfoot.com/images/galleries/windtunnel/windtunnel05.jpg[/url] [url]http://www.ironfistleadfoot.com/images/galleries/windtunnel/windtunnel06.jpg[/url] Basically racebronco2 has his FG molded hood vents located in the same spot and he has performed some string and data comparison tests to confirm the benefit and air flow. Also from what he has said, opening up his hood was the single best cooling mod he has made to his open track Cobra. My car started running consistantly 10* or so cooler after opening up the hood some more. This combined with my other cooling mods have made my Cobra quite enjoyable to drive even during hot wheather after a year of chasing cooling issues. I couldn't be happier with it's current operating temperatures!!! I'm well aware of the high-pressure cowl area. I've been around many carb equipped race cars that utilized custom aluminum air boxes to draw air from the high pressure cowl area. I've also previously owned a 1975 Camaro (350,4 bbl, 4 spd) that utilized a custom cowl hood that fed the carb plenty of fresh air. I agree that the 03-04 heat extractors are quite functional. The only negative I can see with the OEM vents is the size, hence the reason I made larger vents and placed them directly behind the stock ones. More and more performance cars are adding vents just after the radiator to extract heat. The aftermarket has also taken notice and many of their new hood designs are placing bigger and better functional vents towards the front of the hood. The new pictures of the 2010 GT 500 shows a quite large(single) heat extractor vent in place of the two smaller ones on the previous model. :beer: Later...Dave [/QUOTE]
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