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Originally Posted by GOT2HAVESVX
A Donut gasket is a slang term for an exhaust flange gasket....Hope this helps!  |
Yup! Sortof...
A normal exhaust gasket is layers of aluminum that sandwich betweenthe two flat flanges. The only gasket in an svx that looks like this is the exhaust manifold gasket that goes on the engine side. There are three "donut" gaskets that allow the exhaust system to "flex". On most cars that use a normal flange gasket a flex pipe would allow this "flexing"
The "donut" gasket looks like a big donut with a large center, it is sandwiched between two pipes which are held together with bolts that have springs in them (to keep them straight an pulling towards eachother onto the "donut".
The SVX has 3 of these, all of them are on the 3rd (main) Cat converter. 2 conecting the head pipes (with the small pre cats on them) in and 1 on the end going out to the res and muffler. Where the head pipes connect to the headers, there is a metal ring that acts as a gasket. They are likely good, but if you break that seal for what ever reason, you might as well pull the ring off and put on a new one.