Has anyone used the Whipple/Mercury By Pass and Actuator Valve on a BDS 1471 blower and intake?

In addition to system benifits as Whipple explains, is it also possible the system may reduce Heat Soak ?

CcanDo, are they telling you to use it on a roots style?

Mer, the by-pass system is an idea that has been nagging me from the first time read on Whipples web site.

Earlier, BDS was asked for plumbing discussion adapting to their blower case....NEVER heard of it.

The verbiage explaining the system is basically redundant by both Eaton Superchargers and Whipple.

In my opinion, the theory is right, screw type blowers regardless of case and rotor design are adaptable, should reduce EGT, reduce detonation and allow more safe boost.

Perhaps, someone is/has done testing, which saves trying to reinvent the wheel.

I started doing it with some PSI blowers, but never finished since the engines went underwater in Katrina. It will actually raise the intake air temps when the engine is at idle, if you do not have water running through the intercooler at idle(which I never do). It doesn't raise it enough to create a problem, but it will raise it quite a few degrees. It is the key as to why the Whipples idle so good. It is definitely do-able. It will take a little creative engineering, but shouldn't be very difficult to do.
Eddie

I have seen the by-pass valve, but I'm a little confused as to it's purpose?
Eddie, you state that you never run water through your innercoolers at idle. I'm using an Eikert 3 stage pump with 1 stage feeding the innercoolers and the other 2 stages feeding the motor. Is it possible for me to use this system on my motors, and what would be the benefit?
I have PSI blowers and use innercoolers.

Gary

The purpose of the bypass valve is to eliminate blower surge at idle.

Also the reason for not cooling the intercooler at idle is so that the fuel stays in suspension. Not a big deal on fuel injected boats, but on older carbed set ups, the fuel can return to a liquid and puddle in the intake. Then when you go to get on plane, it sucks up the fuel, goes rich and stumbles or dies etc.

Thanks. I have had none of those problems with running water through the innercooler at idle. I do have the "surge" at idle and I will look into plumbing the valve into my motors. I talked to Eddie, by the way he was very accommodating and friendly, and he filled me in on the use of the valve and by-pass. I'm going to look at Whipple's unit and try to adapt it to my application. I already have a large "port" in the intake below the blower that I can dump into. All I will have to do is figure out how to connect the base spacers for the carb's together, with sufficient volume, and plumb that to the valve. Anything that I have missed?

I know they use the by-pass valve on a screw blower, due to the build up of heat from the blower speed, there are some other mfg out there with a better valve. I'll have to check on this.

Please do, and get back to us.

RMP,
It was good talking to you. If I can help any further, please do not hesitate to call me.
Eddie