Revan Racing Posted June 23, 2010 Report Share Posted June 23, 2010 I have had a lot of people inquire and ask about why there is such a difference with a Shelby dual fan heat exchanger versus heat exchangers with out fans. The answer is in ambient and convective heat soak from the heat generated within the engine block. When our cars are cold and we start them up and get going they are crisp and have tons of power because they are obviously cool. So what happens to many of us is we drive the car after it has gotten up to operating temperature and then we park the car. Whether you run in for a sandwich or whatever the car is sitting in a parking lot or your driveway after being warmed up and the operating temperature of the car is likely close to 180-200 plus degrees. When you let the car sit all of the heat from the block permeates the engine and subsequently the intercooler and the fluids within the intercooler and radiator causing those fluids to rise significantly. So an 30 minutes, an hour or two hours later you fire the car back up and it's completely heat soaked because nothing has been done to reduce ambient temperature because of the convective and ambient heat of the engine permeating and heat soaking the cooling mediums within the engine components. When you utilize a Shelby dual fan heat exchanger the fans kick on and start to pull the heat from the heat exchanging and intercooling system immediately. Without fans you will have to drive the car for a good amount of time in order for the air to flow over the heat exchanger and cool the intercooler/heat exchanger fluid down to a point where timing is not pulled if you can get it to that point. Usually a long cruise on the highway can remedy the problem however stop and go traffic is brutal and difficult reduce the ambient temperature after a re-start. The concept of the dual fans is that after the car has sat and gets heat soaked from sitting you immediately begin the process of removing the heat which gets you back into the power band much faster and gets the timing and spark advance retard point back to a point where it is under control and allows the ECU to provide you with maximum timing and spark advance. In multiple data logs I have seen that the recover time of the intercooler fluid is much greater with the fans versus a non-fan heat exchanger. This is even faster when distilled water is utilized versus anti-freeze which is designe to retain heat, thus the reason why it is called 'Anti-Freeze', it holds heat. A lot of people have said that I don't 'Race' my car. You don't have to 'race' your car to experience and utilize the benefits of a Shelby Dual Fan Heat Exchanger even if it is a daily driver. Get the heat out as soon as possible and as quickly as possible. Many drag racers use my heat exchanger with great success when they run back to back to back runs in something like True Street. For example, a member on Team Shelby, Kostas, actually improved his ET after each run at the NMRA event at Bradenton. His driving was good and his car wasn't pulling timing even as he went through the waiting time between rounds when you are not allowed to open your hood. And he doesn't have a trunk reservoir where you can access the trunk in a true street event. If he had no fans on the heat exchanger the idle temperatures would accelerate and his ET's would have been lower due to heat soak. Please feel free to post your questions and I look forward to answering them. Thanks Van Collier Revan Racing 561-445-7702 dvancollier@gmail.com Link to comment Share on other sites More sharing options...
knownukes Posted June 23, 2010 Report Share Posted June 23, 2010 I have had a lot of people inquire and ask about why there is such a difference with a Shelby dual fan heat exchanger versus heat exchangers with out fans. The answer is in ambient and convective heat soak from the heat generated within the engine block. When our cars are cold and we start them up and get going they are crisp and have tons of power because they are obviously cool. So what happens to many of us is we drive the car after it has gotten up to operating temperature and then we park the car. Whether you run in for a sandwich or whatever the car is sitting in a parking lot or your driveway after being warmed up and the operating temperature of the car is likely close to 180-200 plus degrees. When you let the car sit all of the heat from the block permeates the engine and subsequently the intercooler and the fluids within the intercooler and radiator causing those fluids to rise significantly. So an 30 minutes, an hour or two hours later you fire the car back up and it's completely heat soaked because nothing has been done to reduce ambient temperature because of the convective and ambient heat of the engine permeating and heat soaking the cooling mediums within the engine components. When you utilize a Shelby dual fan heat exchanger the fans kick on and start to pull the heat from the heat exchanging and intercooling system immediately. Without fans you will have to drive the car for a good amount of time in order for the air to flow over the heat exchanger and cool the intercooler/heat exchanger fluid down to a point where timing is not pulled if you can get it to that point. Usually a long cruise on the highway can remedy the problem however stop and go traffic is brutal and difficult reduce the ambient temperature after a re-start. The concept of the dual fans is that after the car has sat and gets heat soaked from sitting you immediately begin the process of removing the heat which gets you back into the power band much faster and gets the timing and spark advance retard point back to a point where it is under control and allows the ECU to provide you with maximum timing and spark advance. In multiple data logs I have seen that the recover time of the intercooler fluid is much greater with the fans versus a non-fan heat exchanger. This is even faster when distilled water is utilized versus anti-freeze which is designe to retain heat, thus the reason why it is called 'Anti-Freeze', it holds heat. A lot of people have said that I don't 'Race' my car. You don't have to 'race' your car to experience and utilize the benefits of a Shelby Dual Fan Heat Exchanger even if it is a daily driver. Get the heat out as soon as possible and as quickly as possible. Many drag racers use my heat exchanger with great success when they run back to back to back runs in something like True Street. For example, a member on Team Shelby, Kostas, actually improved his ET after each run at the NMRA event at Bradenton. His driving was good and his car wasn't pulling timing even as he went through the waiting time between rounds when you are not allowed to open your hood. And he doesn't have a trunk reservoir where you can access the trunk in a true street event. If he had no fans on the heat exchanger the idle temperatures would accelerate and his ET's would have been lower due to heat soak. Please feel free to post your questions and I look forward to answering them. Thanks Van Collier Revan Racing 561-445-7702 dvancollier@gmail.com Why have the Shelby Dual Fan Hx? 1. Forced convection is the best form of heat transfer in any application. Since you can't always drive 150mph to "force" the air over the Heat Exchanger(radiator). Fans that create a focused 150mph wind is the next best thing. The fans are invaluable when going slow or stop and go. The fans supplement the airflow when you are moving faster, so they only make it better. 2. The radiator design is better than stock, so it works better even w/o the fans. 3. The package is designed for the GT-500, is a totaly intergrated package and it WORKS!!!!!!!!!!! ok, I have one so I am biased...but, it WORKS!!!!!!!!!!!!!!! BJ Link to comment Share on other sites More sharing options...
GR40Freak Posted June 23, 2010 Report Share Posted June 23, 2010 I have had the privilege of installing and seeing first hand how well these work. They are impressive to say the least. It makes any SS or modded GT500 perfectly reliable when its warm outside or when you're on the loud pedal. A great product. Colin Sebern Director - CorteX Precision Technology www.cortexracing.com Link to comment Share on other sites More sharing options...
theseeker Posted June 23, 2010 Report Share Posted June 23, 2010 Van, I am planning to add one to my GT but thanks for sharing and explaining the benefits. Rocky Link to comment Share on other sites More sharing options...
clark17357 Posted June 23, 2010 Report Share Posted June 23, 2010 I had the whole Revan Racing/Shelby set up installed on my SGT/SC. Everything Van and the others have said is even more true with the SGT/SC. Van's design was created for the monster motors you GT500 guys have. With the smaller 4.6 motor I have, it is not even a contest -- the heat loses. One point with the 4.6, I have a KB on my car and decided to replace the KB pump with the GT500 pump on the heat exchanger. I never had a problem with the KB pump but, when you put the two side by side you can see the GT500 pump can move more fluid than can the KB pump. My thought was, after the Revan Racing/Shelby cooling package being installed, the pump would become the weak link. Jim Link to comment Share on other sites More sharing options...
MY500SS Posted June 23, 2010 Report Share Posted June 23, 2010 Not long after getting my SS, I tracked her at California Speedway. Ran great for the first session. Starting losing power due to heat soak and blew coolant ( from the heat exchange reservoir ) all over under the hood during the second session. Needless to say I didn't run anymore sessions. A year later I tracked her again at California Speedway. Same weather conditions, same track configuration but this time WITH the new cooling system REVAN developed for Shelby. Man oh man what a difference. I ran all five sessions with no heat soak, no loss of power and no heating problem what so ever. So I know first hand this system work. Hands down, this is the best mod I have done to my SS. Link to comment Share on other sites More sharing options...
Revan Racing Posted June 23, 2010 Author Report Share Posted June 23, 2010 Why have the Shelby Dual Fan Hx? 1. Forced convection is the best form of heat transfer in any application. Since you can't always drive 150mph to "force" the air over the Heat Exchanger(radiator). Fans that create a focused 150mph wind is the next best thing. The fans are invaluable when going slow or stop and go. The fans supplement the airflow when you are moving faster, so they only make it better. 2. The radiator design is better than stock, so it works better even w/o the fans. 3. The package is designed for the GT-500, is a totaly intergrated package and it WORKS!!!!!!!!!!! ok, I have one so I am biased...but, it WORKS!!!!!!!!!!!!!!! BJ Thanks Bill. Bill was one of the first guys to get a Super Snake with the Cooling Package. He came to my house one night to see the cooling package before it became an official Shelby Product. I started to explain the cooling effects and how it works. Bill just looked at me and nodded his head. I'll never forget Bill asking me, "what the hell do you do?" I'm an electrical contractor and lighting designer by trade. There I stood talking about heating and cooling with KNOWNUKES! He's a Nuclear Engineer! I think he knows a wee bit more than I when it comes to heating and cooling!! I have had the privilege of installing and seeing first hand how well these work. They are impressive to say the least. It makes any SS or modded GT500 perfectly reliable when its warm outside or when you're on the loud pedal. A great product. Colin Sebern Director - CorteX Precision Technology www.cortexracing.com Thanks Colin. I hope things are working out well for you with your new venture. Van, I am planning to add one to my GT but thanks for sharing and explaining the benefits. Rocky My pleasure. Glad it helped explain the benefits. I had the whole Revan Racing/Shelby set up installed on my SGT/SC. Everything Van and the others have said is even more true with the SGT/SC. Van's design was created for the monster motors you GT500 guys have. With the smaller 4.6 motor I have, it is not even a contest -- the heat loses. One point with the 4.6, I have a KB on my car and decided to replace the KB pump with the GT500 pump on the heat exchanger. I never had a problem with the KB pump but, when you put the two side by side you can see the GT500 pump can move more fluid than can the KB pump. My thought was, after the Revan Racing/Shelby cooling package being installed, the pump would become the weak link. Jim Thanks Jim. Now you've got a spare pump when you go to the track!! Not long after getting my SS, I tracked her at California Speedway. Ran great for the first session. Starting losing power due to heat soak and blew coolant ( from the heat exchange reservoir ) all over under the hood during the second session. Needless to say I didn't run anymore sessions. A year later I tracked her again at California Speedway. Same weather conditions, same track configuration but this time WITH the new cooling system REVAN developed for Shelby. Man oh man what a difference. I ran all five sessions with no heat soak, no loss of power and no heating problem what so ever. So I know first hand this system work. Hands down, this is the best mod I have done to my SS. I have a world of thanks to give to Dan for his help in the process of my products becoming Shelby Products. Thank you for the kind words Dan. Dan is the Man!! Link to comment Share on other sites More sharing options...
Goats4ever Posted June 23, 2010 Report Share Posted June 23, 2010 Please feel free to post your questions and I look forward to answering them. Thanks Van Collier Revan Racing 561-445-7702 dvancollier@gmail.com Hi Van, Excellent post! When SAI Snaked my car I had the cooling package installed; this is the same package you are talking about, right? Thx, Jim Link to comment Share on other sites More sharing options...
Revan Racing Posted June 24, 2010 Author Report Share Posted June 24, 2010 Please feel free to post your questions and I look forward to answering them. Thanks Van Collier Revan Racing 561-445-7702 dvancollier@gmail.com Hi Van, Excellent post! When SAI Snaked my car I had the cooling package installed; this is the same package you are talking about, right? Thx, Jim Jim Yes! This is the same package. You'd be surprised how many Super Snakes do not have the cooling system and are leaving tons of power on the table when they don't have to. Thus the reason for the explanation and post! I hope you are enjoying the power!! Van Link to comment Share on other sites More sharing options...
Aussie Snake Posted June 24, 2010 Report Share Posted June 24, 2010 Yes! This is the same package. You'd be surprised how many Super Snakes do not have the cooling system and are leaving tons of power on the table when they don't have to. Thus the reason for the explanation and post! \ I have also experienced the same issues. I installed the AFCO intercooler and then Vans Radiator from C&R before it became the official Shelby design, I still had problems at the track and also experienced the coolant overflow problems and overheating. I then installed the full shelby / revan racing cooling kit including the dual fan intercooler. What a difference, my SS ran great all day (until the fuel and driver ran out of steam !!!). Combined with my Griggs Suspension the Cooling is fantastic, thanks to Van and other dedicated team members our cars get better with experience and honest to goodness track proven accessories. Now if we can just get Shelby to add the Griggs suspension as an official mod ill be happy haha. Cheers Jason. Link to comment Share on other sites More sharing options...
Goats4ever Posted June 25, 2010 Report Share Posted June 25, 2010 Hi Van, Excellent post! When SAI Snaked my car I had the cooling package installed; this is the same package you are talking about, right? Thx, Jim Jim Yes! This is the same package. You'd be surprised how many Super Snakes do not have the cooling system and are leaving tons of power on the table when they don't have to. Thus the reason for the explanation and post! Van, Thx! Yes, the temp gauge stays at the same temperature no matter how I drive the car. It was worth the extra cash to have this system installed. Thx Van for looking out for SS owners! Jim I hope you are enjoying the power!! Van Link to comment Share on other sites More sharing options...
Goats4ever Posted June 25, 2010 Report Share Posted June 25, 2010 I have also experienced the same issues. I installed the AFCO intercooler and then Vans Radiator from C&R before it became the official Shelby design, I still had problems at the track and also experienced the coolant overflow problems and overheating. I then installed the full shelby / revan racing cooling kit including the dual fan intercooler. What a difference, my SS ran great all day (until the fuel and driver ran out of steam !!!). Combined with my Griggs Suspension the Cooling is fantastic, thanks to Van and other dedicated team members our cars get better with experience and honest to goodness track proven accessories. Now if we can just get Shelby to add the Griggs suspension as an official mod ill be happy haha. Cheers Jason. Jason, How many miles do yuo have onyuor Snake and how often do you race the car? Thx, Jim Link to comment Share on other sites More sharing options...
Aussie Snake Posted June 26, 2010 Report Share Posted June 26, 2010 Jason, How many miles do yuo have onyuor Snake and how often do you race the car? Thx, Jim Hi Jim, I have around 10k miles on her now. I have only being to the track around 6 times all up. Its a damn expensive exercise, tyres, brakes and maintenance hahah. I need a two new sets of tyres right now for my car, street and track. I guess i need to work harder to support such expensive endeavours haha. But i love my car, im heading off for a 10 day driving trip with my missus in a few weeks, cruising the wine regions of South Australia, Coonawarra, Barossa and Claire valleys..its winter over here, but i would still rather cruise in my car than my wifes BMW 330D (which is also chipped haha, but still boring by comparison). So 9/10 ths car use is weekend cruising, 1/10th pure adrenaline and hard driving. Cheers Jason, Link to comment Share on other sites More sharing options...
GR40Freak Posted June 26, 2010 Report Share Posted June 26, 2010 I just... installed my Revan/Shelby radiator in my car yesterday. I love it. Cooling problems solved. Colin Link to comment Share on other sites More sharing options...
MY500SS Posted June 26, 2010 Report Share Posted June 26, 2010 I have also experienced the same issues. I installed the AFCO intercooler and then Vans Radiator from C&R before it became the official Shelby design, I still had problems at the track and also experienced the coolant overflow problems and overheating. I then installed the full shelby / revan racing cooling kit including the dual fan intercooler. What a difference, my SS ran great all day (until the fuel and driver ran out of steam !!!). Combined with my Griggs Suspension the Cooling is fantastic, thanks to Van and other dedicated team members our cars get better with experience and honest to goodness track proven accessories. Now if we can just get Shelby to add the Griggs suspension as an official mod ill be happy haha. Cheers Jason. A big +1 Link to comment Share on other sites More sharing options...
BoneDoc Posted June 27, 2010 Report Share Posted June 27, 2010 Van this option was a big no-brainer for me. maintains HP and protects the engine. Nice work on the mod! I am going to the drag strip today so I will be putting to the test (again!). I hope to start getting my feet wet with roadracing soon where i'm sure it will show the biggest improvements. Ron Link to comment Share on other sites More sharing options...
Revan Racing Posted June 30, 2010 Author Report Share Posted June 30, 2010 I just... installed my Revan/Shelby radiator in my car yesterday. I love it. Cooling problems solved. Colin Thanks Colin. Beat Downs to begin. Longest radiator install in history!! Van this option was a big no-brainer for me. maintains HP and protects the engine. Nice work on the mod! I am going to the drag strip today so I will be putting to the test (again!). I hope to start getting my feet wet with roadracing soon where i'm sure it will show the biggest improvements. Ron Ron The road course called and asked where you are at! Adrenaline push stat! LOL Go get it! Van Link to comment Share on other sites More sharing options...
Revan Racing Posted July 1, 2010 Author Report Share Posted July 1, 2010 Now on sale in the Shelby in the Shelby Store. 15% off for the 4th of July 4july2010 Coupon Code. Holy crap!!! Link to comment Share on other sites More sharing options...
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