Replacing the exhaust flange gasket on RX7
Our newly acquired RX7 track car has had a small exhaust leak under the car. I suspected this was contributing to the huge backfire I got every time I went into turn 1 at Atlanta Motorsports Park. (Update: this turned out to not be the case.)
The car has what looks like a Racing Beat header and two into one pipe adapter.
I began by soaking the very rust bolts in PB Blaster. I also did the work with the pipe just a little warm form driving the car into the shop.
What fell out surprised me.
These actually did a pretty good job of sealing. But I dug around in the spares we got with the car and found the proper gasket.
I replaced all the nuts and bolts with new stuff from ACE hardware. The car is just a bit quieter now without the leak under the floor.