laack

I just replaced the donut gasket in front of the catalytic converter and its leaking. Did i need to use a sealant around the gasket? The bolt/springs from autozone didnt seem to pinch the flange tight enough against the gasket to seal... will the gasket seal it self up a little more as it heats up?

94 civic dx 1.5l
stock exhaust

"goose"Jay

did you tighten them with hand tools, or air? Sometimes the only way to get the flanges snug enough are by using impacts.

laack

hand tools...

its tough to explain, but the bolt shaft had a long bushing spacer type set-up with the spring. the threaded portion was only about 3/4 inch. i tightened it to the point where the spacer was hitting the a pipe. the pressure applied to the joint is from the spring pusing against the cat flange and the head of the bolt. It cant be tightened any further.

I'll find a link later and post it. i have to step out for a few hours