Stock downpipes N/A?

[BlueStag]

OK, I am going to lose it.

 

Is there no stock downpipe with flange to be had new?

 

For a 240/260.

 

I despair of ever getting a tight joint at my flange.

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Third time was NOT a charm. I had to saw the damned pipe AGAIN, take down the downpipe AGAIN. Found the exhaust had been passing under the gasket next to the rear down pipe. Not over, next to the manifold. I am going to assume at this point that the manifold is OK.

 

I applied three coats of permatex aerosal copper gasket glue to the downpipe flange. Then a coat to the gasket, applied it, then another coat to the other side of the gasket, and another coat to the manifold.

 

The leak is much less dramatic than it had been, but it remains.

 

My energy and my budget are about exhausted. I'm just going to tolerate the leak for a while until it gauls me enough that I am moved again to action.

 

Curses!

Edited March 23, 2012 by BlueStag

[NewZed]

One possibility - the nuts and studs are bottoming out before generating full clamping force. If you have aftermarket studs they might have wider unthreaded portion in the middle, wider than the combined flange and gasket thickness. A thick washer (with ID bigger than OD of unthreaded portion of stud) can fix it or add insurance.

[BlueStag]

One possibility - the nuts and studs are bottoming out before generating full clamping force. If you have aftermarket studs they might have wider unthreaded portion in the middle, wider than the combined flange and gasket thickness. A thick washer (with ID bigger than OD of unthreaded portion of stud) can fix it or add insurance.

 

Yeah. I checked that while I had the manifold off.