Is there a single cat that can replace my two cats that I have on my 87 f-150, 302 ?

I will want it street legal.

I live in dallas, tx.

Is there a place that can do the job for me ??????

Thanks in advance..

 

A big-name muffler shop like Meineke will do it legally.

 

I went there and they said that would not touch it ?

Kinda weird huh...

Also midas said the same.

 

Depends on state or local law. Where I live, if you have two cats going into a muffler shop, by law you must have two when you leave. If you only have one going in, you can have one coming out. You might ask them if that's the same thing they have to do there. If so, then theoretically you could cut ones of the cats out yourself and just clamp in a piece of pipe in it's place and then take it in. But I would talk to one of the smaller shops before you do that. Big places like Midas and Mieneke and less likely to be upfront about things like that than the little guy on the corner.

 

I just replaced the whole y pipe and cats with a Dynomax Y Pipe and single converter. It bolts right in and you can do it yourself. As far a legallity, check with Walker, but they say it is 49 state legal.

 

Walker makes a replacement setup for the 5.0 and 5.8's , its a new Y pipe and a single converter with a air tube kit included.
i work at a muffler shop and have installed quite a few of these, check Walker out

 

I will check out walker.

I know on cat doews HC and the does NO so I will make sure the one cat does both.

In Texas there are some big time smog laws.


Thanks again....

 

Walker and Dynomax are probably the same part, just marketed under a different name.

 

They are the same campany My mistake for calling it Dynomax. The part number is Walker 15742, but you can check it out at www.dynomax.com I got it locally for $209. They had it for me in two days. Summit shows it for $169, but it's backordered and looks like 3-4 weeks to get it.

 

Catalytic converters combine hydrocarbons in the exhaust (HC emissions) with oxygen in the air from the smog pump WITHOUT a flame (combustion). They use platinum powder embedded in the ceramic honeycomb substrate to CATALYZE this reaction, but they require heat to start working and then produce heat as they work.

Lead (from leaded gas) coats the platinum permanently, which is why unleaded gas was developed. That's how cats get "clogged" - they don't actually block the flow of exhaust from this condition. If they're actually causing a restriction, it's because the ceramic has shattered because of mechanical impact or thermal shock (from fording), or because it's powdered from overheating (faulty smog pump plumbing & extended idling), or because of fouling from oil getting by the rings or valves.

Originally, lead was added as an anti-knock agent, but newer additives are more effective, cheaper, and less poisonous.

The first cat uses the air that's injected at the heads to burn some HCs, and more air is injected between them for the second cat to use in burning the rest. A single replacement will probably have the air pumped directly into it.

The catalytic coverters (thermactor air system) have nothing to do with NOx emissions. Those are controlled by the EGR system, which returns small amounts of exhaust to the intake system under precisely regulated conditions to cool the combustion reaction.

 

steve you are wrong
lead was added do to the fact that exhaust valves did not have hardened seats long ago, the lead was used to cushion the exhaust valve and keep it from pulling itself through the head.

M Kruger, ASE and MI state certified master mechainc #M236922

 

I just recently had my dual cats replaced with a single cat. I do not recall the brand but A&B Muffler can do the work for you in Arlington Cooper st location. Of course the vehicle must meet certain parameters for replacement (Over 80K miles or 5 years old) and have a specific problem (overheating, low engine power, etc). The way I look at it you are doing your part to protect the environment by replacing a old converter. Best of luck to ya

D

 

I've never heard of that, but I'm not talking about lead as part of the engine. I'm talking about the lead additive in "leaded" gasoline. It was an anti-knock agent. I learned that in 2nd-year college chemistry. You can read more here, but here's a short excerpt:

"With the exception of one premium gasoline marketed on the east coast and southern areas of the US, all automotive gasolines from the mid-1920s until 1970 contained lead antiknock compounds to increase antiknock quality. Because lead antiknock compounds were found to be detrimental to the performance of catalytic emission control system then under development, U.S. passenger car manufacturers in 1971 began to build engines designed to operate satisfactorily on gasolines of nominal 91 Research Octane Number."

 

Before this gets too ugly, lead additives in gasoline actually accomplished BOTH anti-knock and valve lubrication functions. The changes automakers made to deal with unleaded gas was to use hardened valve seats to accomodate the lack of lead lubrication/"cushioning". That's why running unleaded gas in an original (un-rebuilt) '60's vintage (or earlier) engine will wear the valves out rather quickly.