jrwilliams95z28

Hey I'm not sure but I've been talking to a buddy of mine at work (he has a ls1 camaro) and he said the ticking I've been hearing when the car is warm and under load (cruise or wot though I can't hear it over the exhaust at wot) could very well be the catalytic converter on its last legs.

Any way to test this theory or just replacement the only way?
It's a single cat 95 with 80,000km, 45000ish miles

Z28harcor

Just ram a rod through the cat and be done with it.

jrwilliams95z28

Lol sounds good haha

shbox

Cats will ratttle...don't know about ticking. Often ticking is an exhaust leak (especially when under a load).

jrwilliams95z28

Would you say for it to tick (as opposed to it being really loud fart sound) that it would have to be fairly close if not right at the head?

shbox

Yes, closer to the head/exhaust manifold is generally where you would hear it.

jrwilliams95z28

ok thanks, that fuels my fire to get off the wallet and buy long tubes lol

FSTFBDY

iTrader: (1)

You can test the cat for being clogged with a back pressure gauge. It screws into the o2 sensor bung. take a before and after cat reading.

Like said above a tick is more like an exh. leak. normally at the manifold gasket or collector gaskets.

1993 z28 f1

iTrader: (6)

Hey:

Depending on your emissions you could go with one of these if you only have a visual inspection.

http://www.allpurposepipes.com/produ...5827ca6ae2fbfe

That should help with the flow and get rid of the rattle.

Dub