For those of you who are using a Boost-A-Pump with an Edelbrock E-Force supercharger where is your Hobbs switch getting it's boost reference from?

 

We usually add our vacuum block on the brake booster hose, but there is also a vacuum hose on the front right of the charger that can be tapped into.

 

Thanks Doug...bear with me for a second on this thought though..I don't think either of those locations ever sees boost with the Edelbrock. Correct me if I am wrong but are not both of those upstream of the supercharger rotors before any compressing of the intake charge takes place? Don't I need a location downstream of the rotors?

 

I use that location to plug into the dyno for a printed boost graph, your good there.

 

I always tie into the line that goes to the MAP sensor, clean and out of the way.

 

I just installed Kenne Bells Boost-A-Pump with the Recetronics harness, using the 1/8" NPT port located on the driver's side of the E-Force for the Boost Switch. In my case, the boost switch operates at 5 lbs of boost which activates the Boost-A-Pump.

 

Thanks Joe,

I had pretty much convinced myself that is where I was headed. Just need to find a 1/8" NPT barbed fitting now. You don't happen to have a photo of the install do you?

 

This too would be my suggestion. You can pick up a brass barb to 1/8" at Home Depot in the brass plumbing section.

 

Mine looks like this. Sorry for the crappy pic. Street elbow and barbed fitting

 

Stopped by ACE Hardware on the way home and they had no less than 3 different 1/8" NPT barbed fittings! 1/8" x 1/8" nipple, 1/8" x 3/16" nipple and a 1/8" x 1/4". I wasn't sure which one I would need so I bought all 3!

 

Hum....Maybe I need to add a 1/8" x 1/8" 90 elbow to the hardware

 

The following pictures show the Hobbs Switch screwed directly into the E-Force 1/8" NPT Port. Output from the Hobbs Switch is cabled to the Kenne Bell Boost-A-Pump.

 

Thanks Joe, I was wondering if that Hobbs had 1/8" NPT or not. Any interference at all with the "Supercharged" wings?

 

Ken,
I did not test fit the E-Force Coil Covers following the installation of the Hobbs. However, I believe the Hobbs Switch will not interfere with the installation or removal of the coil covers. After my first visit to Bandimere for test and tune, I removed the coil covers and have never replaced them. I actually like the look better without. Without also helps with heat dissipation so I have no plans to ever install the coil covers again. I will probably upgrade the valve covers and coil pack locations and leave the covers in my garage closet.

I would test fit for you but I have removed all Coil Cover mounting hardware and relocated coil pact #7 to accommodate my fuel pressure sensor location. I used Swagelok connectors on both the firewall and fuel rail connections and attached -6AN braided hose with fittings to locate the pressure sensor more in the open away from the firewall or trapped heat. In relocating coil pack #7, I had to remove some of the Coil Cover mounting hardware. Because I had to remove some of the hardware, I just removed it all, and as I mentioned earlier, I like the look without covers.