Forced Induction Superchargers | Turbochargers | Intercoolers

hobbs switch placement?

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Old Aug 23, 2011 | 01:53 PM
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Default hobbs switch placement?

Wheres the best spot to place a hobbs switch for activating a second fuel pump? Can it be in an intercooler pipe or should it be on the intake...? If it has to be on the intake how should I attach it to my plastic truck intake? Thanks!
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Old Aug 23, 2011 | 07:33 PM
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get a vacuum manifold like the blox one that I use. it will screw right into it if the hobbs is a 1/8 npt.

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Old Aug 24, 2011 | 12:12 AM
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Thank you very much !
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Old Aug 24, 2011 | 02:11 PM
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Hmmm, I never thought about screwing it directly into the vacuum/boost manifold. Cool, glad I saw this thread.
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Old Aug 24, 2011 | 04:52 PM
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Originally Posted by The Alchemist
Hmmm, I never thought about screwing it directly into the vacuum/boost manifold. Cool, glad I saw this thread.
Screws in like butter. You lose an inside port because the Hobbs is a huge bitch. You could getsome fittings from ace and 90 degree it if you need all the ports. I didn't though.
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Old Aug 24, 2011 | 05:55 PM
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Well I picked up a vacuum manifold from Vibrant and it has ports on the side and end.

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Old Aug 24, 2011 | 07:09 PM
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Either would work. Welding in a bung on the intercooler piping would be fine.
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Old Aug 24, 2011 | 07:12 PM
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I run a manifold like posted above.
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Old Nov 19, 2012 | 07:46 PM
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which vacuum line did you run off of (if you have a pic that would really help) it looks like you have a lot of room?
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Old Nov 20, 2012 | 05:13 AM
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Originally Posted by willizm
get a vacuum manifold like the blox one that I use. it will screw right into it if the hobbs is a 1/8 npt.

Which vacuum line did you run off of (if you have a pic that would really help) it looks like you have a lot of room?
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Old Nov 20, 2012 | 11:03 AM
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i have a block like that but ran a vac line to the hobbs switch cus i hid it.
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Old Nov 20, 2012 | 11:16 AM
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Mine is like Will's.

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Old Nov 20, 2012 | 05:31 PM
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which side of the car is that on and where is that vacuum line coming from
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Old Nov 20, 2012 | 05:41 PM
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Originally Posted by lbm13186
which side of the car is that on and where is that vacuum line coming from
Let me go grab some more pics for you.
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Old Nov 20, 2012 | 05:53 PM
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thanks man could use some help on this one
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Old Nov 20, 2012 | 06:11 PM
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Here's where I have the main line connected.



Here's where I have my vacuum block. That's the passenger headlight (I'm sure you can figure that out though).



Another shot.



Catch can shot for fun.



Engine bay shot to see the mess of vacuum lines I have on the passenger side.



I tried routing them the best I could. I put the block and catch can where they are at to get them out of the engine bay and it was easier to mount them there. When I am bored sometime I may try cleaning them up more, but it works like it is. Hopefully this helps some and gives another idea of how to route things.
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Old Nov 20, 2012 | 07:41 PM
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whats the point of the catch can and does that go b4 or after the block?? kinda new to this and wanna get this right

thanks guys
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