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Turbo Dodge Air Cleaner Housing
Integrated Blow Off Valve Mod
If you want to hide away or install a turbo blow of valve in your turbo Dodge car because it did not come equipped with one or you have very limited space such as in the GLHS cars then you can follow in the footsteps of Chrysler engineering and put a BOV INSIDE the standard T2 or GLHS air cleaner housing. I actually had a late model T1 housing w/BOV and the hoses for it, so...
I robbed the bulkhead style metal nipple fitting from the T1 throttle body hose and transferred it to the integrated intercooler hose inside the T2 air cleaner housing. To do this, all I had to do was shape the fitting a little to fit the curve inside the tube and used JBWeld epoxy to hold it in place.
Then I robbed the BOV from the inside of the T1 housing. It is easy to remove by just prying off the friction retainer ring.
Removed a little plastic off the T2 housing's air cleaner element support post and drilled a hole in the bottom of the housing to accept a grommet (also borrowed from the T1 housing) and about 18" of thick walled silicone hose that I bought in a kit from FWDPerformance.
Using a short piece of coolant hose, I attached the OEM BOV to the metal nipple fitting, and threaded the smaller silicone hose through the grommet and then tightened up the clamps as shown in the pictures below.
So now I have a OEM BOV inside my stock appearing air cleaner housing that will be good to about 14 psi, which s what I currently run, I used all OEM parts (except the JBWeld) and total assembly time was about an hour. I get to use the regular housing and filter so there is no need for a cone, and custom piping, more CAC hose and more T-bolt clamps.
If I decide to go for more boost, I can call up my friend Chris at Turbos Unleashed and get one of their billet BOVs (in black or silver) and install it in place of the OEM BOV that I have in there now...and I'd have a high-performance version that would hold even more boost like for a stage 5 (20 psi) setup.
I think it's pretty dang cool and I love the fact that it's (except for the small hose exiting the bottom of the housing) totally stealthy. That little hose I plan to 'T' into the wastegate line and I will also be including the special purpose check valve that also came from the late model T1 housing setup. It's not just a one way check valve either by the way. If you blow in the manifold side of the check valve, it does not flow, if you pull vacuum, it opens the valve. If you blow or pull vacuum from the other side there is a integral vent that allows flow in either direction. This is to keep pressure off the BOV diaphragm, yet allow the BOV to open under vacuum. This small check valve is pictured below in the last picture and you can see I have not yet cut the new hose and inserted it.
I already had the T1 housing, BOV, hose and check valve as well as the JBWeld so my cost on this project was $0. If I had to buy the T1 stuff at a salvage yard for example, I'm guessing $20 for that and $10 for the JBWeld for a typical cost of $30.
Where else can you get an OEM BOV solution that fits like a glove, is this serviceable, you can go to the dealer and get replacement parts for if it tears up, and can't even be seen for $30! And if I need to upgrade for more boost, the TU billet BOV is like $110 plus shipping and it also is pretty much a bolt in.
Image of the late 88+ T1 turbo compressor outlet hose with the needed fitting for the BOV feed hose and the same housing interior, showing the stock factory BOV inside.
Image of the BOV removed from the air cleaner housing to make the needed mods and image of the inside of the other side of the air cleaner housing.
Image of the BOV hose fitting after removal from the compressor hose and after being installed and sealed with JB weld in the air cleaner housing.
Image of the air filter support having been notched to make room for the blow off valve hose and image showing location of the boost signal hose hole in the housing. This hole will have a grommet installed for the hose to pass through for a air tight fit on it's way to your boost pressure source on the compressor housing.
Image of the BOV and hose installed on the metal fitting and showing the boost signal hose exiting the grommet of the outside of the air cleaner housing.
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