|
PCA Member since 1988
Join Date: Feb 2018
Location: SW Washington State
Posts: 4,627
|
vjz: I don't recall if this fine point was discussed earlier in this thread--the top of the air box screws to the bttom of the airbox with some compression, but not all the way down, becuase there are supposed to be little springs around the screws between the top and bottom sections. Those allow the top to pop up slightly from the bottom to relieve backfire pressure, and that's why there is a foam gasket between the halves too. Most people don't know that and have just screwed them down tight. Supposedly, if those are properly installed, you don't need the backfire pop valve, however, I still think those are a good addition. Anyway, refer to your manuals and past threads about this, and carefully inspect to see that those springs are in there and the foam gasket is intact. And install a pop valve.
Do the smoke test to see if/where you have any leaks.
__________________
1973.5 911T with RoW 1980 SC CIS stroked to 3.2, 10:1 Mahle Sport p/c's, TBC exhaust ports, M1 cams, SSI's. RSR bushings & adj spring plates, Koni Sports, 21/26mm T-bars, stock swaybars, 16x7 Fuchs w Michelin Pilot Sport A/S 3+, 205/55-16 at all 4 corners.
Cars are for driving. If you want art, get something you can hang on the wall!
|