wrightcomputing wrote:
Well it certainly seems like you guys have a good amount of knowledge on Superchargers. For my power goals I think the TVS is a good option because I want the instant predictable power for Autocross Anything more than 400WHP (Currently approx 210WHP NA) would become traction limited anyway I expect. I am not however married to the idea or Supercharger type. If you were going to add a Supercharger to my F22C engine how would you do it.
Here are a couple of options.
1. As discussed custom manifold with the supercharger directly into the intake tubes and into the engine
2. Mounted under the intake Manifold similar to Off Road SHO where my AC compressor used to be then use tubing (with or without an intercooler) into where the current throttle body is.
3. Over the exhaust and run in front of the engine similar to option 2.
4. Something else.
I do not plan to run at the upper end of the Blower so do I need to have an intercooler, if so what and where?
Depending on the thermal efficiency, cooling power and construction of the blower - you can see intake heat soak around the same temperature as a turbo may yield. A Centrif SC yields the lowest heat soak by virtue of how they work. the good ones are oil/water cooled though.
My advice to you is to pick a location where the SC will see adequate airflow. On that legacy, you notice I mounted it straight through the hood. I had a cover for it, and when the cover was mounted to the hood - I would see intake temps at the TB rise ~15° or so.. a noticeable difference just from it being exposed to airflow.
If I had my druthers, I would use an air to water intercooler in the intake/ right beneath the blower on a custom manifold set up. Since you are auto crossing/ tracking, you want the least amount of throttle input lag. designing a custom manifold will also allow you to get the proper intake runner length for the RPM range that you want to reach max efficiency / peak power band.
I wouldn't mount it above the exhaust, not unless you can really guarantee that you can preclude it from being exposed to the high exhaust manifold temps of prolonged runs. Blowers, like everything else, have wear components and oil in them. large amount of external heat will excessively degrade the bearings/ oil in the unit.
Also, the closer to the crank pulley, the better. The longer the belt, the more chance of slip you'll have. If you're spinning yours as fast as I was mine (14k rpm).. you will get belt slip. You also want to have as close to 180°, if not more of belt wrap on the pulley. so keep that in mind when locating your SC
whatever you choose to do, I would run the throttle body before the SC in the intake tract. It would be much better suited for your intended application, and is a lot easier to tune.
_________________
Tucker
Driven5 wrote:
Forced Induction + Magic Spinning Doritos = EMod