I told both Moss Motors and Jackson Racing that this would be my final trip down to Jackson Racing. I told them that "we will either replace the blower or we are ripping the whole thing off." Everytime I have to go down to Jackson Racing, I lose at least a half days pay. The following week I went down to Jackson Racing to have it inspected. Naturally, the sound disappeared before I got to Jackson Racing. We went for a ride for about 15 minutes but it wasn’t making the noise. I told Jackson Racing to pull off the blower and inspect it for any oil loss. This would show that there has been a loss of oil even if they couldn’t see it dripping from the blower. JR said it cannot be inspected because the intake manifold and supercharger are sandwiched together from the factory and only Magnuson can take it apart. I asked if they "couldn’t or wouldn’t take apart the blower?" I got no answer. Jackson Racing was unwilling to swap out the blower unless they heard the sound. I told them I could not afford to take off any more time from work and I needed this kit repaired today. Jackson Racing said that they couldn’t do anything for me and that I should keep driving it until it starts making all kinds of noises and stops working. Then I should bring it in for repair. I told them I wasn’t about to go home only to have the same problem arise tomorrow or the next day and then have to take another day off from work and drive back to Westminster to have it inspected again. At this point, I was absolutely furious with both Jackson Racing and Moss Motors. I told them to rip off the damn supercharger and put the car back to stock. So, after about 5 hours Jackson Racing finished and charged me $625 for removing the supercharger kit! I asked, "why so much?" They said they charge the same for removal as they do for installation. I told them I only paid $525 for the installation. I made them look it up in the computer and then they said they would only charge me $525. They charge $525 for the installation but that includes dyno runs. Why should I be charged the same amount with no dyno time? Since I was caught between a rock and a hard place, I had no choice but to pay the $525.
After having the supercharger removed, I sent it back to Moss Motors who in turn sent the blower to Magnuson for repair. At this point, I was no longer dealing with Keith at Moss Motors. I moved on to his supervisor, Mike. Mike seemed like a good guy at first and acted as if he was going to do his best to resolve the situation. After three weeks of leaving messages with Mike and not having my telephone calls returned, I finally caught him in the office. Mike told me that he couldn’t be bothered and he was very busy. He had Keith call me and finalize the details. I asked Keith what Magnuson had found out about my blower. He said Magnuson found the front seal to be bad and that the bearings had become unseated. Magnuson was nice enough to repair the blower at no charge. The entire time Keith, Mike, and everybody at Jackson Racing insisted that there was nothing wrong with the bearings and that they have never had a leaky blower. They insisted the noise I was hearing was a result of something else. Mike tried to tell me that it must have been one of the other modifications on my car. All this time I was right and nobody at Jackson Racing or Moss Motors wanted to believe me or stand behind the product they sold to me. After having the supercharger repaired to working order, I promptly sold it. Good riddance. The longer I had the supercharger on my car the more I regretted it. The constant belt tightening, bogging, and an ever-constant battle with detonation was getting on my nerves. Not to mention, the car really wasn’t all that fast especially when compared to turbocharged civics or hybrids.
I thought I would take this opportunity to tell you about my experience with the Jackson Racing supercharger over the past year. The Jackson Racing supercharger is NOT maintenance free, despite what their ads claim. In one year’s time, I had to tighten the belts on three different occasions and after only one year and less than 10,000 miles the pulleys were worn out and needed replacement. As many of you know, I had detonation (pinging and knocking) problems when I first had the kit installed. Installing the JR fuel pump solved most of the detonation. However, the fuel pump cost me five horsepower on the dyno (Yes, I have the dyno charts to prove it).
Another problem with the Jackson Racing supercharger is that the fuel pressure is too high. At 18 in/hg, I saw about 42 psi of fuel pressure. At 0 in/hg I saw 62 psi of fuel pressure and at full boost/wide open throttle (WOT) I saw 85 psi of fuel pressure! Keep in mind; the correct fuel pressure on a Honda Civic should be between 28-46 psi. Excessive fuel pressures can lead to fuel injector failure. Operating at nearly twice the maximum fuel pressure is a recipe for disaster.
Another problem is that I was getting detonation at throttle tip in and WOT. I purchased a J&S knock sensor, which solved the remainder of the detonation but not without costing me additional horsepower. The JR fuel regulator cannot supply enough fuel at throttle tip in when boost goes from vacuum to 3-4 psi almost instantly. The fuel delivery with the Jackson Racing kit is a constant problem. The Jackson Racing fuel pressure regulator is insufficient in supplying enough fuel at throttle tip in and supplies too much fuel at WOT. My air/fuel meter reads full rich (11.0:1) at WOT. This improper fuel delivery leads to detonation during partial throttle conditions and decreased performance at WOT due to an over rich mixture. Perhaps JR specifically setup the fuel parameters to run rich at WOT to use fuel to help cool the charge because you cannot connect an intercooler to cool the charge?
Another issue that needs addressing is the lack of an intercooler or even the ability to connect an intercooler to the Jackson Racing kit makes it difficult to raise boost levels beyond 9-10 psi. 10 psi is the point of diminishing return on the M45 blowers. The heat rise charts are available at
http://www.eaton.com/supercharger/M45.html. Raising the boost level on the supercharger is not an easy task. You have to remove the supercharger/intake manifold from the car to install the smaller diameter blower pulley. This task will take about 6 hours for a competent mechanic to finish. This is quite different from raising the boost with a turbocharger. With a turbocharger, raising the boost level is simply a matter of turning a knob. Many people have decided to raise the boost level on their Jackson Racing superchargers despite these facts. This often results in dyno graphs that look like this. Note how this dyno is filled with detonation (spikiness) all over the entire 8-psi graph. (This dyno graph was measured on Jackson Racing’s Dynojet 248E Dynamometer.) Engines that experience this much detonation aren’t long for this world. Others have invested thousands of dollars in replacement regulators, injectors, electronic fuel controllers, piggyback devices, ignition retard boxes, knock sensors, water injection, and high output fuel pumps in order to help alleviate this detonation.
Many people who have pushed the envelope to 10-12 psi have found HUGE increases in temperature rise and SMALL horsepower gains. The increase in temperature eliminates the horsepower caused by the increased boost and increases the chances of detonation. Not to mention spinning the supercharger at excessive speeds will lead to overspin and may lead to premature blower failure. Despite the high dollar investment, many people still find themselves rebuilding the motor in just a few months. If the same amount of money had been spent on a turbo kit, it would be faster, less prone to detonation, and easier to upgrade than the Jackson Racing supercharger. It’s funny how many people who have Jackson Racing superchargers on their cars decide to go turbo. I have never met anyone who had a turbocharged Honda and then decided to put a Jackson Racing supercharger on it. Remember, all of the world’s fastest Hondas utilize a turbocharger and not a supercharger.
Another issue that needs addressing concerns parasitic drag on the motor caused by the supercharger. When I first had the supercharger removed and drove around in stock form, I was amazed how well the car got out of the hole. The low rpm response was very impressive compared to the response when I had the supercharger installed. I wasn’t sure if the increased low-end response was because my ignition timing was no longer retarded or because there was no more drag on the motor from the supercharger. I assumed it was probably a little of both. However, recently I discovered that Jackson Racing had set my timing incorrectly, when they put the car back to stock. All this time I was driving around at 8 BTDC. The mechanics at Jackson Racing didn’t set the timing properly. Despite the fact that when I picked up my car I asked them if they properly reset the timing and they said they did. The increased low-end response is because there is no parasitic drag on the engine from the supercharger. I guess we know who wins the turbo lag vs. parasitic drag argument.