Quote:
Originally Posted by RotaryResurrection
If you have a stock exhaust (I dont remember) then ALL of the flanges warp over time and do not seal even if you use new gaskets. You can try to repair it with a LOT of filing or grinding, or you could get some new, thicker flanges and have them welded on. And if you have stock cats (even gutted) then they leak as well...if you pry off the heat shielding, the case cracks at all 4 corners and to seal it you have to weld a small bead to seal the cracks.
This is why most people just take the whole front section out and have a solid pipe welded from the manifold back to the Y, to prevent the possibility of leaks. Even if you didnt think you had leaks before, you'll be surprised how much quieter your car can be once the small collective leaks are sealed.
|
I have a straight pipe from the manifold to the y pipe. Maybe there's a leak where the downpipe connects to the straight pipe. 
__________________
1986 Sport: 132k miles, 5A (Sapphire Blue Metallic), Tokico Blues, Racing Beat Springs, Custom LED tailights (only S4 LED tails in the world), SSR Mark II, Racing Beat exhaust, S5 black interior, Rotary Resurrection rebuild at 120k miles
Community Service Manual
RotorWiki
"Imagination costs nothing; we could build square locomotives or fly to Mars" - Felix Wankel
Yesterday is history, tomorrow is a mystery, but today is a gift. That is why it is called the "present."
|