Clutch Vacuum Pipe Modification


Here are some pics of the clutch vacuum pipe modification that I did. I never liked the location of the clutch vacuum pipe that was located between the battery and the y-pipe, and after reading about the Stealth316 Clutch Vacuum Pipe A Modification , I decided to make my own ultra-low budget version.

I started by removing the y-pipe, air filter, mass air flow sensor (MAS), blow off valve (BOV), and intake hose that connects to the MAS. I then disconnected the clutch vacuum pipe, and moved it around to see where I could reroute the line, and see what pieces I could salvage out of the stock piece. I decided to reuse both ends of the pipe, and remove one piece from the center, which would be replaced by a short section of flexible hose. The first set of pictures below show the two lines where I cut, and the second set shows the piece that I did not reuse after doing the cutting. I used a pneumatic air cutoff tool, but most any metal cutting device would work to cut the pipe.

Stock Vacuum Pipe with Marks for Cutting









Piece of stock vacuum pipe that did not get reused






After cutting the piece, I rotated the rubber hose near the firewall 180 degrees, and then reinstalled the end of the pipe that was previously there.



I reinstalled the other end of the pipe in the stock location, using the stock bracket. I used a small piece (approximately 4" long) of 3/8" rubber hose (I used fuel hose) to connect the two pieces. I then twisted each of the pieces slightly until it was lined up in the straightest/best way possible. The pictures below show how I routed it.

Modified Vacuum Pipe







After I was happy with the location of the pipe, I then reinstalled the intake pipe and blow off valve. With the routing location the vacuum pipe that I chose, I had to run the pipe between the intake hose and the hose to the blowoff valve. See the picture below for the routing that I used.

New routing



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