EZ 30D Cat Removal

[ocei77]

Trying to help a friend replace his rusted exhaust. The cat at the Y has a busted seam where the flange used to be which now has a 3 ft section of straight pipe with u bolts.

I have someone who I can get the cat from. (The 3rd cat at the Y). I see that it only has one flange from the PS, while the DS seems to be a push fit.

How is it secured, or would it be better to just get the whole exhaust from the manifolds back.

TIA.

 

O.

[idosubaru]

My guess is it's been repaired before and cobbled together.  Every EZ30D I've come across has already needed exhaust repair here years ago, so I'm surprised i's lasted this long.  There's no "push-to-fit" unless i'm just forgetting something.  you can google image search the exhaust parts and go from there in terms of fitting/placement/etc.  

 

How it's secured is a hard question - the stock exhaust is just all bolted together - do you mean the stock exhaust, the existing exhaust (we need to verify it's all stock), or the replacement part (some aftermarket converters are generic and require welding/clamping). 

 

What to replace depends on how much rust, personal intent, how long you're going to keep it (because cost tends to be pricey and escalate quickly depending what your'e doing). 

[Numbchux]

That center cat is welded to the driver's side pipe from the factory. If you want to replace just the one, you will have to cut and weld.

 

Here's what mine looked like. Broken before and after that cat:

20160623_165837 by Numbchux, on Flickr

Edited July 25, 2017 by Numbchux

[ocei77]

Thanks for the reply.

After more research on opposed forces, it seems that the DS exhaust is once piece from the manifold to and through the cat at the y.

The cat fitting is either swaged or welded under the shield. ala the front cat on the BL series.

So it seems I'll have to remove the DS manifold and the bolts that joins the left and right exhaust sections.to get this replaced.

I just thought I was missing something that I knew you would know of.

Thanks again.

 

O.