NOTE: THESE "NORMALLY CLOSED" VACUUM ACTUATED EXHAUST CUTOUTS MUST BE USED WITH A SWITCH AND A VACUUM SOLENOID TO FUNCTION!
This is the Vacuum Exhaust Cutouts that we recommend for those Naturally Aspirated and Nitrous engines that make LESS than 12" of vacuum at idle due to a huge cam for example.
Also great for those that want on/off type actuation, similar to an electric cutout!
The Slip Fit inlet and outlet, along with 304 Stainless Steel construction makes it easy to weld to.
To activate, you can use the switch of your choice and most any 2 outlet vacuum solenoid. These can be found at the junkyard or online and are often used as evaporative purge solenoid valves or fuel pressure regulator solenoids.
Below is a picture of an example of the type of solenoids we are talking about (not included)