quote:

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Originally posted by Senor_2

I'm starting to lean more towards a custom made dump using the Metalcat, most likely mild steel, ceramic coated with a support bracket

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That would be the final solution, though maybe a little costly, no doubt worth it.
When I installed a metal cat in the ATS pipe, we made a simple jig to bolt it into, cut the pipe & tack welded the cat in place before finishing..worked fine.

I recall when the ebay DP's & manifolds first started to appear, some better known dealers were selling these under their own brand name, all be it with added bracing or some kind of modification (or none)..then the price went thru the floor. Anyhow, the only ones that seemed to overcome the cracking problem, were pipes that had gone through a 'normalising' process, were they were sent out to be heated in an oven to high temps for a period of time, to relieve metal stress.

unless you were adamant on keeping the stock ct26/20b i wouldn't spend too much on a dump, custom one with metal cat would easily cost over $500, and fitting a metal cat to a cheap ebay dump wouldn't solve the cracking problem.

Muman got any pics of what you did and what cat did you use
i found it impossible geting a small sized cat to use in there
cheers

I used one of these..at a slightly higher cost!
Trimmed back the end tubes & spot welded a bracket on the body to brace to the block.
No pic till I put it on the hoist.

http://www.pcpa.com.au/index.php?main_page=product_info&cPath=30&products_id=298

are they ADR compliant or does no-one care, if i was going to spend decent money for a custom dump i'd want the cat to be legal

The DP I modified was an ATS GT28rs pipe that obviously replaced any stock cat. I didn't like the idea of a street driven car
running catless for a couple of reasons, hence the search to find a do-able cat conversion. My take on the subject is, I sourced a replacement cat from an Australian company, to fit an Australian driven car..with a 5 year replacement warranty. Not perfect logic, but still defendable when it comes to ADR's. Is it ADR compliant?..I have no idea, ask the supplier, the receipt is in the glove compartment.

but they probably have for off road use only on the packaging.

probably...
Are your wheels ADR compliant..muffler..new short shifter?
Does anyone really care that much about a rash of new laws, bi-laws, regulations and requirements that serve no practical purpose other than to enforce penalities and impose fines on the public, when car manufacturers are selling new cars that don't comply?. What about the new chrome wheel trims on your neighbours hyundai..are they ADR approved, or plastic crap from SC that will fly off sometime soon and hit some kid in the head?
Irony of it is, you can 'pay' for a licence/permit/certificate to do pretty much anything.
Ok..over it. I'll take it all back -:)
So who's worrying about the dope heads pushing amphetamines on the school kids????

Back on topic..so all you guys have stock cats, in the stock location right?..yeah right!

pfft, only cats i have are my fluffy ones.......

but no seriously, i agree if you intend keeping it with factory turbo in place and i spose "well i bought it from an aus company" is covering your arse well enough to warrant the cost.

quote:

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Originally posted by MuMan

Real thing to look out for is the flow rate of their cat. I don't think they give any specs on the cat..do they?
If it's a ceramic core it will flow ~40% less than a metal cat of the same core size & cell rating. Plus it's a considerable drop in cross-sectional area from the OEM cat..just a thought. The good ceramic ones that size are around 200 CFM.
So any noticeable drop in performance or spool might be worth looking at.

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The cat in the ebay dump is only about 5mm smaller in diameter than factory cat (gen3)

Cheers