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Old 10-22-2011, 07:45 PM   #1 (permalink)
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Default Catalytic Converter

So since it sounds like I really do need to drop the Y pipe on the 87 wagon to replace the oil pan gasket, is there anything I should do with the "Y pipe". There is one catalytic converter on this car, this is the setup:

http://info.rockauto.com/getimage/ge...48-0&width=450

Was going to throw on a new O2 sensor while I had it off using an AutoZone giftcard.

Should I stop at a muffler shop and let them "work their magic" with it since I live in a no emission/no safety inspection state?
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Old 10-23-2011, 06:15 PM   #2 (permalink)
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If you choose to go with the shop for a delete, I would tell that you need it back. Cut it open and pull the platinum, gice it a nice soak in a bucket with some brake clean, then recycle for a little cash.
When i did my old chevy I got $120 (It was a big cat)
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Old 10-23-2011, 08:42 PM   #3 (permalink)
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Are there any side effects to doing this?

I have no idea what the long term prognosis is on this wagon, so putting a $300-400 new Y pipe in is insane at this time. maybe in a year or two if it proves to be roadworthy.
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Old 10-23-2011, 10:54 PM   #4 (permalink)
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Cool

Just more rasp and maybe more stink. It will help the top end.
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Old 10-23-2011, 11:10 PM   #5 (permalink)
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+1 ^^^ you will notice a difference over 3500 rpms. passing at highway speeds will be more fun!!!
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Old 10-24-2011, 06:36 PM   #6 (permalink)
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Okey doke sounds good! There's a small hole in the muffler after 24 years from water dripping out of the back of it (the typical spot). Maybe a good time to toss on the duals from an 07 Mustang GT that I picked up awhile back...
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Old 10-25-2011, 05:30 AM   #7 (permalink)
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You know that doing that (reducing the back pressure of exhaust), with the existing cam profile (overlaping), you will increase the scavenge of the fresh mixture at low rpm (you will send more fresh mixture out on exhaust)...
So, in end, you will increase also the consumption in city driving and possible will have a rougher idle.
To read.

Last edited by SoNic67; 10-25-2011 at 05:43 AM.
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Old 10-25-2011, 10:37 AM   #8 (permalink)
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Quote:
Originally Posted by Bigdogg2830 View Post
If you choose to go with the shop for a delete, I would tell that you need it back. Cut it open and pull the platinum, gice it a nice soak in a bucket with some brake clean, then recycle for a little cash.
When i did my old chevy I got $120 (It was a big cat)
You can't pull the platinum, and the cat is worth far more intact than as loose material. Anyone who pays good money for loose material is looking to get screwed, because you can't tell what kind of car it came from if if its even factory stuff. Besides, thats way too much work.

The shop often factors the value of the cat, which in your case isn't much, as part of the job. Let the shop keep it, asking for the cat back is like not leaving a tip at the restaurant.
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Old 10-25-2011, 11:18 AM   #9 (permalink)
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Scotty Kilmer to the Rescue!!

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Old 10-25-2011, 05:50 PM   #10 (permalink)
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He doesn't want to "rescue" the cat, he wants more "umph" without it.
Like I said, he might gain something on top end and in the same time loose something at low end. His choice.
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