Van@RevanRacing
Active Member
I have had a lot of people inquire and ask about why there is such a difference with a Revan Racing 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 my 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 Revan Racing 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 SVT Performance, 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 not 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
[email protected]
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 my 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 Revan Racing 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 SVT Performance, 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 not 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
[email protected]
Last edited:
. Send me shopping.... Should anything be added to it? Or just the water? My baby stays in a heated garage through the evil winter so no worries there. 
