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Discussion Starter #1
Any advice on where to bring our Spyder to check if the pre-cats have been removed - and then have it done if they're still in there? We just got the Spyder two weeks ago at a good price and in such cherry condition that I decided even if the pre-cats were in there I could ride the engine out for many years and then eventually do the 2zz upgrade. I went to the local Toyota dealership and when I asked the service guy about "Pre-Cats" he looked at me like I was discussing feline semen. The service manager hasn't returned my calls (one week). I do realize I'm asking a dealership to de-engineer an aspect that would supposedly make the car pollute more, which would understandably give them pause. But I live in Utah where we import much of the country's nuclear waste, so I'm not too stressed about a few extra carbon molecules evacuating out the south end of my northbound Spyder.

Suggestions on how to search for shops, etc, or is the dealership my optimal route?
 

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It's illegal for a mechanic to remove your precat. They can replace it however a new precat is $700 from magnaflow.
 

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It's illegal for a mechanic to remove your precat. They can replace it however a new precat is $700 from magnaflow.
Silversprint is correct: It is illegal for a person employed as a mechanic to remove the precats. However, the car's owner can remove them legally. It's a DIY project.

There are How-To articles on how to remove the precats here on SpyderChat, but they were written for removing precats from relatively new Spyders. By now, most Spyder exhaust manifolds will be very difficult to remove. The hammering & banging needed could very well fracture the precat material.

I suggest an alternate method:
Leave the exhaust manifold attached to the engine.
Remove the O2 sensors.
Remove the exhaust pipe connecting the manifold to the muffler (the "midpipe").
Poke the precat material out of the manifold with a screwdriver & hammer.
You can also access the precat material from underneath the car, but use eye and breathing protection.
Rinse the gutted manifold out with a high pressure garden host.
Reinstall the midpipe & O2 sensors, and you're good to go.
 

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Discussion Starter #4
It's illegal for a mechanic to remove your precat. They can replace it however a new precat is $700 from magnaflow.
That explains the dearth of information I uncovered during my research! Thanks - I will forward this information to the friend on whose behalf I was asking the question. Yeah, for a friend. That's the ticket.
 

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Discussion Starter #5
Silversprint is correct: It is illegal for a person employed as a mechanic to remove the precats. However, the car's owner can remove them legally. It's a DIY project.

There are How-To articles on how to remove the precats here on SpyderChat, but they were written for removing precats from relatively new Spyders. By now, most Spyder exhaust manifolds will be very difficult to remove. The hammering & banging needed could very well fracture the precat material.

I suggest an alternate method:
Leave the exhaust manifold attached to the engine.
Remove the O2 sensors.
Remove the exhaust pipe connecting the manifold to the muffler (the "midpipe").
Poke the precat material out of the manifold with a screwdriver & hammer.
You can also access the precat material from underneath the car, but use eye and breathing protection.
Rinse the gutted manifold out with a high pressure garden host.
Reinstall the midpipe & O2 sensors, and you're good to go.
That might be a tad above my mechanical pay grade. Well... if I want the car operational after I'm done! But I do have a few buddies who I could perhaps convince to "assist" me - as in "You're an idiot, just go fetch me a wrench!"
 

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Like you I am a recent owner and did my precats using the write-up a couple of weeks ago. Its not hard. I did not find the exhaust manifold difficult to remove on my car. I did have one stud come out with the nut but other than that it went fairly smoothly. My precats were solid but I am glad I did it. I would not do this with the exhaust manifold in the car as there will be dust and debris. You don't want that getting in your engine. If you have a local mechanic that is a friend they might do it but as mentioned most will not touch a job that messes with pollution equipment. When you do it be sure to use plenty of liquid wrench or PB Blaster on all nuts. It will make the job much easier and help prevent stripped nuts and broken studs and bolts..
 

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Call me, ill walk you through it.

Also where do you live? You can try to ping someone locally to help you / give you a hand. There may be some aftermarket / exhaust shops that are willing to take the liability of a cat delete but ... I mean you could be like ill pay you to remove the header, let me have it for 30 minutes wink wink then give it back to them to re-install. The chiseling out of the material is not at all difficult. Popular technique is just a long ass screw driver and a hammer or dead blow and just chisel it out. Careful of the dust.


*ohh u can edit posts
 
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