Hi Everyone,
Just a quick note on the testing results from last week and today.
We finally had a chance to wrap up and test the intercooler design we produced for the Gen2 kit. It worked out well and we learned a lot about it by having an engineer who worked for Autorotor 12 years work with us.
Basically, we ran a stock engine with a standard Supercharger kit at 5 and 8 psi. We had K type thermocouples in the intake at the blower outlet and in an intake runner.
We noted that there was no gain in power by simply cooling the air charge at lower boost levels. In order to see a gain, you must have a need / be able to increase timing advance. At 5 psi, we're not taking out much timing and therefore were not able to get much of a gain with the intercooler (about 15HP).
At 8 psi, it was a different story. The outlet temperature of the blower was 112 degrees C (much higher than on MBN's car we tested). With water flowing through the intercooler, the inlet temperature at the runner was 64 degrees C. We therefore were able to increase timing advance (finding the optimum point where further advanvce did nothing). The net gain was around 30 HP and TQ at the rear wheels.
So, now that we've proved to ourselves that it can work and that the engine still runs properly with this intake design, we're going to proceed with building a production version with a larger (thicker) and more dense cooler.
Next up is finding a good charge cooler supplier. Then, more testing at higher boost levels where we should expect greater gains.
I will post pictures of the prototype soon.
Regards,
Sean
Just a quick note on the testing results from last week and today.
We finally had a chance to wrap up and test the intercooler design we produced for the Gen2 kit. It worked out well and we learned a lot about it by having an engineer who worked for Autorotor 12 years work with us.
Basically, we ran a stock engine with a standard Supercharger kit at 5 and 8 psi. We had K type thermocouples in the intake at the blower outlet and in an intake runner.
We noted that there was no gain in power by simply cooling the air charge at lower boost levels. In order to see a gain, you must have a need / be able to increase timing advance. At 5 psi, we're not taking out much timing and therefore were not able to get much of a gain with the intercooler (about 15HP).
At 8 psi, it was a different story. The outlet temperature of the blower was 112 degrees C (much higher than on MBN's car we tested). With water flowing through the intercooler, the inlet temperature at the runner was 64 degrees C. We therefore were able to increase timing advance (finding the optimum point where further advanvce did nothing). The net gain was around 30 HP and TQ at the rear wheels.
So, now that we've proved to ourselves that it can work and that the engine still runs properly with this intake design, we're going to proceed with building a production version with a larger (thicker) and more dense cooler.
Next up is finding a good charge cooler supplier. Then, more testing at higher boost levels where we should expect greater gains.
I will post pictures of the prototype soon.
Regards,
Sean
I can't wait to see how the production version does at 10 or 12 psi.
