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The mkiv Supra Owners Club

J-Spec/UK Spec Cat difference???


Andrew

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Just phoned up Toyota to see the price on the 2nd Cat and they tell me that J-spec Cats are different to the UK-spec.

They couldn't quote a price for the J-spec so I ask for UK-Spec, they then tell me there are 4 different kinds of 2nd Cat???

Is it me, or are Toyota being typically dim on the subject?

Prices ranged from £196 - £450 btw.

 

Also if anyone has any info on high flow cats it would be most appreciated.

This needs to be something to get me through an MOT next year, I have a 2nd Cat but someone looney has cut the end off.

 

 

Thanks

Andrew

 

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For a JDM RZ 6 speed I get the following part number for the 2nd cat assembly:

 

17410-46160 (May 1993 onwards)

 

The SZ and the SZ-R both use 17410-46190 (May 1993 onwards)

 

The UK EPC calls up 17410-46180 for TT (May 1993 to January 1996) and 17410-46220 for NA (May 1993 to May 1996).

 

So there are indeed four different cat pipes, but looks like only one for the RZ.

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The thing is, as 'we've' said before, the Aftermarket cat' pipes and

zorsts only come in TWO variaties (sp?)...

 

Jap' cat replacement, or, UK cat' replacement.

 

The cat-back is identical.

 

I'm pretty certain the only difference in the cat pipes is one's got

the 2nd Lambda sensor in the cat, the other hasn't. ? ? ?

 

What else is different in the 'types' of cat ? ? ?

 

If it's just slight variations in cat' material etc. then it won't make

a hoots difference to the MOT test (any cat' should still

do 'enough' of a job ?)

(earlier cats are normally ceramic/fragile/cheap? later ones

ought to be Platinum/Titanium sponge/mesh and probably

dearer ??)

 

If it was 'shape' or mounting, then there would need to be the same

number of different cat' REPLACEMENT pipes ? wouldn't there ?

 

I know that TDi have a HUGE pile of cat's outside their works,

'cos they've done so many pipes.....

perhaps they can confirm the 'different' types and if it matters ? ?

 

FatS.

 

(is there a different 'volume' one for an N/A perhaps ?)

 

besides, Andrew, there's a LOT of dissused cats out there !

they're gonna 'go' for a lot less than a new one ! ! ? ?

I would think TDi just throw 'em away ! ! We've tried selling

old cat's for the 'Precious' metal but no-one's interested ! !

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Thanks for all the info chaps, informative as ever, can't believe Toyota were right for once :p

 

I will have that Cat off you Scooter if it's not too much trouble mate, I'm going to the Hampshire meet so I can buy you a beer ;)

That's if you are still going??

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