Fox T-Bird/Cougar Forums  

You did kinda scare me i was like what did i do except work all day but i at least got you thinking about Boost.

you can't run a wastegate on an sc like on a turbo,it does not work properly.

A couple of guys


HERE will disagree with you as to whether it'll run properly or not.

That article said it could be done but was basically a waste of time as your creating more heat and losing more hp so in other words like i tried to say it can't be done properly.

I did a story in Muscle Mustangs and Fast Fords about using a Wastegate from a turbocharger. It was used to regulate boost as we pullied the blower up big time. Closed, the engine saw 18 psi of boost and open we dropped it down to 15 psi for pump gas use. It worked great, my only regret is NOT comparing 15 psi of wastegate regulated boost vs. straight up 15 psi of boost with pulleys. 'Till this day, I wish I would have compared the two. Maybe it will be nice to revisit in the future.

http://www.musclemustangfastfords.com/tech/mmfp_0708_vortech_centrifugal_supercharger_wastegate_install/index.html

I have a good friend of mine who has a Paxton 2200 HO kit on his 2006 Mustang. Those who read the magazine might remember it from the Blower vs. Turbo story and the 12s or Bust article. Anyway, he just added a wastegate to his Paxton combo and it works awesome. The car has outstanding low-end boost with the typical top-end charge. He has it set to 15 psi of boost.

I have to warn you. The story has caused quite a bit of controversy on message boards. I even had blower reps tell me that it wouldn't work. The biggest argument I recieved was that the heat generated from the blower from spinning it so hard and the extra power it took to spin it, would cause a loss in power. the blower reps even told me that blower surge would kill off power potential. I am not saying I know more than those guys, I was going to write the story whether it worked or didn't work. In the situation I dealt with, the wastegate worked just fine and output was really nice. You can see the aggressive nature of the boost curve too, it was flatter than a normal centrifugal curve.

The guy who did the gate for the story does quite a bit of dyno work on both turbo and blowers. In his vast experience, that combo worked better than straight up 15 psi on similar combos. He has done quite a few similar combinations. The major benefit of the wastegate combo was so the customer just had to add race fuel to the tank and flip a switch at the track. That was it, the switch closed the wastegate and changed to a race fuel tune in the computer. My buddy's '06 Paxton car has it so he gets more low-end boost without risking over-boosting at higher rpm.

Boost is Boost the only thing better is Sometimes more Boost as long as you don't blow up anything.