Installing a wastegate on a SC'd car. So u can change the boost with a boost controller from inside the car. Of course u have to put the smallest pulley that u want and then close the waste gate to get less boost for normal driving.

Example,
If i want to run 12psi with race gas then i will put a small pulley that give me 12psi. Then for everyday i can lower the boost to 6 or 8psi with a boost controller. Do u guys think this could work?

 

It won't, I have looked into it... it seemed like a cool idea but I talked to a couple people who did it and said it didn't work. A wastegate is made to control exhaust gas anyway so it would be hard to adjust/tune. I mean I bet you can get it working but it won't work good enough to warrant something like that.

 

This will never work. If you understood how a BC worked you would know that it will only work on somtthing with a wastegate. IE: Turbo. A SC is driven off the crank and and the only way to change the psi is to speed up the SC by changing pulleys sizes. A turbo is driven by exhaust gasses. As the exhaist turns one side it then turns the other side(just by the intial question i am keepping this elementery). It will keep making more boost until something ****s the bed. It could the motor it could be the turbo. The wastegate helps control this by letting some exhaust bypass the turbo. The BC tells the wastegate at how many punds it should open. I hope this helps.


Michael

 

What he said.

 

Man it might not work now but that would be a cool idea!

 

I know how the wastegate work and how a BC controls the wastegate, but why cant we use the same method in a different way. We will let the Wastgate control how much psi goes into the motor? Example, We will have 12psi pulley on the car and let the wastegate controlled by a BC to allow 8psi to get into the intake manifold. Why wouldnt this work?

 

Ya why TTT for ya

 

Its just wont work. A wastegate contorls exhaust gases. Since a SC doesn't work off exhaust gasses it wont do anything. its that simple. If you are talking about letting purg some pressure from the intake tract then that is just dumb. You will lossing alot of the driveabilty of the car when it just pushes a good amount of air out to the atmo. If you want to adjust boost get different pulleys or go with turbo and a 2 stage BC. If you do this you will most likely need to find a way to have to seperate tunes change with the amount of boost. One for pump and one for race gas. The car will need to run different on high boost and slow burning race gas. Those are the two main reason it wont work.

 

first of all, of course he means install a wastegate type unti on the intake tract.. it would do nothing on the exhaust.

and yes, it will work. however, you willl have a lot of losses and heated air associated with the extra boost being created.

you are better off just pulleying it for 12psi, and not reving it as high.

 

somone needs to engineer a clutch pulley system that starts to slip at certain psi and keep the blower from gaining rpm

 

I dont see IF it work why someone would do it. You are using power to turn the SC but then you are letting that work just cruise on through. Plus why would you regulate are on the intake with a wastegate. Just use a BOV and put a spring in it that coresponds to the boost that you are running. Not to mention that once you open a hole in the intake the SC will have to work harder to keep it at the limit you set.

I would also like to know how it would work and what the benefits would be along with how you would tune for the differences.

Michael

 

i have seen it on a mustang brfore...i think!

 

Tunning is no problem..... I can have million tunes in my laptop and with a click of a key i can change to anyone i want with LS1 Edit. So that is out of the way. Also Man u should relax... U dont have to call an idea i came up with Dumb!!... We are just debating on if it could work or not, nothing personal.

If it worked it will give the SC a huge advantage and makes it operate like a turbo. Of course u wontbe able to increase the boost more than what u have on the pulley size, but that is still nice if it worked. At least u can lower the boost for daily driving and fuel economy.

 

You want a pressure relief valve (not a wastegate). You put this on the manifold, at a desired psi it will bleed boost from the intake. Its really more for turbo cars to prevent boost spikes in winter when in use with a MBC. EBC's can control and adjsut the boost at any time. But I guess it would work with a blower.

*copied from a retailer*

11501710 Relief Valve $120.00
11900520 Relief Valve Adapter $38.00

Use the GReddy Relief Valve as a secondary boost safty device. By adjusting the set screw you can control the release point (from .08 kg/mm2 to 2.0 kg/mm2), protecting your intake manifold and engine from boost spikes and overboosting. Made from billet aluminum it has been anodized blue.

 

Thanks alot..... I would definatly give it a try when i get my SC on. Can the Relief Valve be adjusted with anything from the inside of the car?