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Re: catyl. conv. breaths better now

So if my catyl conv develops a hole, how will that affect my emissions? Anyone know? I would assume some levels would go up, but which? My state (Georgia) does require an emissions inspection so I'd hate to have a hole develop and mess up my inspection,

kordon

> SO, The moral of the story is, if you're
> doing the exhaust, don't leave your cat
> bolted up without inspecting it, and maybe
> helping it perform a little easier.

> Good Luck,

> Matt

> PS Let us know which headers you go with and
> how they perform.
 

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Re: catyl. conv. breaths better now

> I haven't done the headers yet, but.... I
> had my exhaust down when I changed my
> tranny. When I pulled the cat off about a
> half a cup of crud dumped out of the intake
> side. Twenty years of.....stuff. I said to
> myself, Now that's something, this
> couldn't have been breathing too well.
> Somehow within a few minutes a rather large
> hole appeared straight through the
> honeycomb. Huge difference in top end
> performance.

> SO, The moral of the story is, if you're
> doing the exhaust, don't leave your cat
> bolted up without inspecting it, and maybe
> helping it perform a little easier.

> Good Luck,

> Matt

> PS Let us know which headers you go with and
> how they perform.
While I will not dispute the advantages of having an empty Cat, If anyone wants, or needs one, call us. We have a local company that is EPA certified to flow test, certify, and sell used cats. We sell them to companies, shops, and others who may be held liable for cat removal, or destruction of a cat. Please no mail from cat lovers!
thanks, Joe
 

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No CAT passes Houston TailPipe Test...

I have a 1978 Datsun 280Z with NO Cat. I purchased the car, and had to bring it in for inspection as soon as I got it. The guy who did the test asked me if I was a mechanic, because my emissions were very low and he had not seen a old car like mine with such clean exhaust. I said no I just bought it, and he said I got a good deal. A few weeks later I was doing some head work, and had the exhaust off and noticed my cat as EMPTY.. Nothing in it.....

If you don't believe me I have the printed statement from the test.

Bean Bandit
 

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Re: Nismo & other suggestions...

> Great info.

> I think I'll try the valve lash mod and see
> if I feel any difference.

> On the K & N, is there any difference in
> performance between the ram air set-up and
> just replacing the stock filter? $125 seems
> like a chunk of change for a pipe. I guess
> if that includes the filter we're more in
> the $75 range. I've already removed the
> serpentine snorkel.

> Also, I can't seem to get rid of a ticking
> in my valves. I'm wondering if it could be a
> small exhaust leak, instead of valve train
> noise. If the valves are adjusted, what else
> in the valve train could be ticking? Any
> ideas?

> Later,

> Matt

SOUNDS LIKE YOU have an exhaust manifold leak. My 75 has the same problem. And I'm thinking of instead of fixing the stock manifold, just installing aftermarket headers, but I'm confused about whether that would be safe to do. Esp. since my 75 280Z is CA model with cat converter.

late,
james.
 
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