Catalytic Converter Options in California for a 87 S4
#1
Instructor
Thread Starter
Catalytic Converter Options in California for a 87 S4
I hear rattling from my cat so I think I need new ones. Besides it failed smog recently.
Have not done this before and I dont know where to go. Im also looking for a cost-effective solution.
Any suggestion especially from someone who has done this before? 1987 S4. Thanks and I appreciate it!
Have not done this before and I dont know where to go. Im also looking for a cost-effective solution.
Any suggestion especially from someone who has done this before? 1987 S4. Thanks and I appreciate it!
Last edited by Saintrey; 10-25-2018 at 06:39 PM.
#3
Rennlist Member
There are cats that will cost you about $300. They won't last forever but they will get you thru smog. I think Magnaflo makes one. I had one installed in my 80 at Muffler Works in Berkeley and it lasted for 8 years
#5
Rennlist Member
magnaflow
have to cut and weld but under 200.00
have to cut and weld but under 200.00
#7
Instructor
Thread Starter
Just curious, will I be able to install this myself without doing any welding?
Im attaching a pic of my cat. Excuse my ignorance here, so if I unscrew these bolts, that should separate them?
No cutting necessary? And the factory ones you have just bolts right in? TIA.
Im attaching a pic of my cat. Excuse my ignorance here, so if I unscrew these bolts, that should separate them?
No cutting necessary? And the factory ones you have just bolts right in? TIA.
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#8
The Parts Whisperer
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So it looks like you have a factory cat now and the fitting in the picture are slip fitting ( no welding) The other end has 2 flanges with 3 bolts each plus you need to disconnect the air pipe and 02 sensor but most people wold consider it a DIY job.
#10
Former Vendor
#11
Instructor
Thread Starter
But Im glad you asked about my smog numbers today.
Because from the latest numbers, I think it could be the cats or I just need to drive the car more
so it will get rid of the extra amount of carbon deposited from the rich mixture before I did some changes.
I am attaching the recent and the first time results.
What I did to bring down the numbers:
- change spark plugs
- change wires
- change rotors
- change fuel filter
- change oxygen sensor
- clean MAF with CRC maf cleaner and area behind it which I saw had some carbon deposits.
But above still not enough apparently from the the recent failed smog numbers although difference from last is huge!
I was expecting it to pass actually after seeing no carbon deposits on the spark plugs after driving it about 100 miiles.
Although I said I heard some clanking noise which I think came from the cats but now it's gone after cleaning the MAF. So I could be wrong.
I measured the heat from the cats and difference is around 80 fahrenheit from before and after cats.
Will appreciate any thoughts you may have. Thanks!
Last edited by Saintrey; 10-26-2018 at 12:59 AM.
#12
Rennlist Member
(Edit)
Your before/after are backwards, I saw the GP result as your after by mistake.
When was the last complete fuel and vacuum system refresh?
Here is what -just- cats being bad looks like
Here is 'everything perfect' (Run above with a factory new cat)
Your before/after are backwards, I saw the GP result as your after by mistake.
When was the last complete fuel and vacuum system refresh?
Here is what -just- cats being bad looks like
Here is 'everything perfect' (Run above with a factory new cat)
#13
Instructor
Thread Starter
Thats more than cats..you've got a fuel problem to resolve.
When was the last complete fuel and vacuum system refresh?
Here is what -just- cats being bad looks like (click the links)
https://www.flickr.com/photos/288046.../shares/3155Kt
Here is 'everything perfect' (Run above with a factory new cat)
www.flickr.com/photos/28804666@N08/shares/x81voS
When was the last complete fuel and vacuum system refresh?
Here is what -just- cats being bad looks like (click the links)
https://www.flickr.com/photos/288046.../shares/3155Kt
Here is 'everything perfect' (Run above with a factory new cat)
www.flickr.com/photos/28804666@N08/shares/x81voS
Last edited by Saintrey; 10-26-2018 at 01:28 AM.
#15
Instructor
Thread Starter
But I am actually being helped by Mark W. but more recently I've been posting here as Mark is also on here.
Are you going to the GHM Cars and Coffee this weekend? I plan to be there.