Removal of "Cat guts" ?

Hi all

My R33 skyline has about 67000km's on it, and I was wondering if it is worth it to get the cat converter out and see if the guts have collapsed in it. If the insides are trashed, if I empty it and put it back (until I save for a new 3" system), will my skyline pass an emissions test? Does anyone in Oz have experience with this.


This is my only real concern. :confused:


cheers,

Brett :bloated:

Illegal.
Big fine.

Do not do it for road use.

If you do some trackwork, just get a bit of straight pipe made up so you can bolt it in place of the cat if you so wish. Hell you could even do the same for the muffler.....

Cheers mate - didn't think it was legal.

Time to start saving for that sweet 3" exhaust.

cheers,

Brett :bloated:

You can pick up Good Hiflow Cat's for around $200 here in Adelaide..
Exhaust Technology are the ppls who sell them..

Weld a pipe through it (2 1/2" if it is a standard cat)
and you will notice the power difference.

If you fill up your car with 98PULP and tell the emissions tester it is
91ULP then you should pass.


Stephen (Sydney)

does anyone know somebody who has been busted for not having a cat not guessing but somebody that has been fined . I you have bald tyres you get defect and you replace tyres and your off again ok 70 dollar defect cost but thats not much so why so much for a cat just say bought car like that.

Skyhigh, love your insight, I'm curious as to how it works - I take it the fact that 91ULP doesnt burn nearly as well as 98ULP in our jap machines and therefore puts out higher emission levels?

Another questions regarding Cat gut removal, what becomes of the O2(?) Sensor that sits in the Cat itself once the guts are removed? Does it foul and become useless? If so what effect does that have on the vehicle performace?

i have a mitsu f.t.o. as well as a r34 gtt //and mitsu g.t.o. and all 3 have passed the uk cat test. which is 0,07 fto //0.04 skyline./// and 0.234 gto
the uk limit is 0.300 co2/ 1.3.lambda
so if that is what your gov need then get the cat to f';#[

Stu - Lucky Bastard! :) Nice collection mate. So I take it you've gutted all 3 cats?? All I can tell you so far is our government are TIGHT ARSES looking to make a quick buck off of their road users.

does anyone know somebody who has been busted for not having a cat not guessing but somebody that has been fined . I you have bald tyres you get defect and you replace tyres and your off again ok 70 dollar defect cost but thats not much so why so much for a cat just say bought car like that.
its a $10g fine if u don't have a cat, prolly ur car gets impounded, my mates silvia is missing the cat and it friggin reeks, i swear so toxic, can't believe he hasn't been caught, it gives u headaches smelling it

GET F#@KED!!!! 10G!!! I know what im going out and buying tomorrow. Man i thought it would be a severe defect notice = $150 max. I had no idea it would be that bad.

got a straight pipe on mine and it doesn't smell. maybe like exhaust but... WTF? toxic? maybe you shat your pants. If it's giving you headaches perhaps it's an exhaust leak? Since it's your friends car and you are not speaking about it first hand then I seriously question that. Isn't it nice how everybody is always talking about their FRIENDS car and never THEIR car.

BLUD, basicy just follow your gut man. If you know the cops are fat pigs in your area then don't do it, or just don't get caught. I would look into it and see what the fine would be just so you know what you are getting yourself into.

I don't know though, I have never had a cop look under the passenger side of my car though. And I have never had a cop pull me over that know's more about cars than I do. Perhaps having on when you get your car tested isn't a WISE idea, but putting it on right after.... there you go. that's what I would do. The straight pipe I have even has the mounts for the factory heat shield so unless you are looking for it, your not just going to notice that I have no cat.

GTS4, my straight pipe has a spot for you to put in the factory O2 sensor, I don't know what is does to performance though?

yeh well its a straight through pipe now from the turbo, and doesn't smell any more so there was proly heaps of shit in the pipe, some cops do check the cat, they tap it with their baton or whatever, and u can tell when theres no cat, should just get a high flow cat, not as illegal.

that post was a while back but if u think ur aussie government r "tight arses" u should try living in so cal (southern california) soon they r going to instate drive-by smogging u wont even know ur being smogged
u just get a ticket mailed 2 u. and ive heard they r goin ta start a ban on right side drive cars and im importing a 89 skyline gts-t soon they r trying to kill me or sumthin and if ne1 is thinkin about gettin an american car the rumors r true they do suk get a gto or a corvette or a viper and thats it id just stick with the skyline ya know

T.RS| GTS-T{J-SPEC}
l8

Hey guys,
I know this is old but thought I would retrieve it for future reference...
The fine for not having a Cat is HUGE and depends on how many cylinders you have / engine capacity as to how much the courts / EPA can impose...
The emissions from a Unleaded car are extremely toxic(carcinogenic) which is why a Cat is installed on unleaded cars. It does pollute the air but is better than dying of lead poisoning :(
Did you also know that the fine for having NOS hooked up and filled on a public street is up to 10G per cylinder? Even if U are not using it?!?
GRRRR...