Catalytic Converter Question

[Dicky]

Noticed a rattle under my 2004 GT (UK) and traced it to one of the cats (offside). The thin metal shield around the cat has rotted away from the flange at one end and has a couple of small rusted holes in as well.

Q1...Anyone know if this can be repaired to keep it going as it's just passed it's mot so the cat itself is good.

 

Q2...Would a good used one be ok or would I need a new one. If so anyone know where's the best place to try?

Q3...Is this metal shield simply a heat shield or is it to prevent water getting onto the cat itself?

[Richf]

its just a shield , some people remove them or secure then with a couple of jubilee clips

[Dicky]

its just a shield , some people remove them or secure then with a couple of jubilee clips

 

So it's not a water protection guard? I understand these things get pretty hot and had thought the

guard was to protect them from sudden cooling

[Richf]

its more to stop stuff like grass touching it so just bear than in mind when you park

[Dicky]

its more to stop stuff like grass touching it so just bear than in mind when you park

 

Ah that makes sense, many thanks Richf

[350zedd]

I would have thought its to protect any vulnerable stuff close by such as plastic pipes, cables from excess heat.

How about some exhaust wrap if the shields have rotted?

[ZMANALEX]

Most just remove or secure with a weld or tying wire.

 

However, they are there for a reason and if removed extra heat will hit the clutch slave hose on the N/S and the fuel lines on the O/S however these areas can be protected with some form of heat reflective shield.

[Loggy747]

If ever there was a sign to go DECAT this is it.....

 

 

Sent from my iPhone using Tapatalk

[Dicky]

Most just remove or secure with a weld or tying wire.

 

However, they are there for a reason and if removed extra heat will hit the clutch slave hose on the N/S and the fuel lines on the O/S however these areas can be protected with some form of heat reflective shield.

 

Thanks Alex, in fact I tied the cover down with Copper wire to stop the rattle for now. Think I'll remove it and see if I can save or extend its life with a bit of creative metal work.

 

Anyway it doesn't seem to be critical as yet.

[Wizza2000]

Most just remove or secure with a weld or tying wire.

 

However, they are there for a reason and if removed extra heat will hit the clutch slave hose on the N/S and the fuel lines on the O/S however these areas can be protected with some form of heat reflective shield.

As above mine were hanging off and certain rpm sounded bad, so removed and put extra foil faced heat insulation around both hoses mentioned by ZMANALEX

 

Insulation I used is the same that come standard on the clutch slave hose, plus have braided hose fitted so that helped with clutch line temps

 

[Jp606]

Yeah I used stainless cable ties on mine as it started rattling.

[350Z paradise]

Heat shield bud...got same problem on my 370,once they are rusted they just get worse. i am removing mine over the weekend as many members have advised.