delta88_frankfurt

Hi everybody,

I need to exchange my Exhaust Pipe Flange Gaskets.
Every shop and online catalogue offers one size, the 2 1/8" version.
But my car (1966 Delta 88, 425cui) has two sizes.
the crossover pipe gaskets are smaller than the one that connects the muffler pipe. I think 2 1/8" only fits the larger one.

Can someone tell me what size I need for the two connections of the crossover pipe?

Thanks

MDchanic

I am not specifically familar with the '66, but are you sure that it has flange gaskets?

All of the later ones have gasketless flanges.

- Eric

Oldsmaniac

If memory serves me right, on a stock single exhaust car the crossover pipe does not use gaskets. The pipe ends are flared and the manifold beveled and no gasket is used. There is a gasket on the exit pipe at rear of rt side manifold.

joe_padavano

Correct. There are no factory gaskets between the heads and the manifolds nor between the manifolds and the pipes. The manifolds have a male tapered flange and the pipes have a matching female taper. There is no provision for installing a gasket. If there is a leak, either the metal is damaged (usually rust pitting) or there is debris preventing a good metal-to-metal seal.