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Boost Reference Source for E-Force w/BAP

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Old Aug 5, 2011 | 08:19 AM
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Default Boost Reference Source for E-Force w/BAP

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?
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Old Aug 5, 2011 | 08:41 AM
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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.
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Old Aug 5, 2011 | 08:54 AM
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Originally Posted by DOUG @ ECS
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?
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Old Aug 5, 2011 | 09:26 AM
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Originally Posted by Motorhead-47
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.
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Old Aug 5, 2011 | 10:06 AM
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I always tie into the line that goes to the MAP sensor, clean and out of the way.
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Old Aug 5, 2011 | 11:27 AM
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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.
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Old Aug 5, 2011 | 11:41 AM
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Originally Posted by jxhunte
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?
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Old Aug 5, 2011 | 04:24 PM
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Originally Posted by jxhunte
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.
This too would be my suggestion. You can pick up a brass barb to 1/8" at Home Depot in the brass plumbing section.
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Old Aug 5, 2011 | 08:07 PM
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Originally Posted by Motorhead-47
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?
Mine looks like this. Sorry for the crappy pic. Street elbow and barbed fitting

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Old Aug 5, 2011 | 08:18 PM
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Originally Posted by ITSGRAND
This too would be my suggestion. You can pick up a brass barb to 1/8" at Home Depot in the brass plumbing section.
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!
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Old Aug 5, 2011 | 08:19 PM
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Originally Posted by wallyj
Mine looks like this. Sorry for the crappy pic. Street elbow and barbed fitting

Hum....Maybe I need to add a 1/8" x 1/8" 90 elbow to the hardware
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Old Aug 5, 2011 | 10:22 PM
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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.
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Old Aug 6, 2011 | 06:38 AM
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Originally Posted by jxhunte
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?
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Old Aug 6, 2011 | 09:30 AM
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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.

Last edited by jxhunte; Aug 7, 2011 at 08:08 AM.
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