 Highlander1
"5th Year" Silver Supporting Member
Posts: 1786
Loc: SE North Carolina
Reg: 08-19-04
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11-23-20 12:11 PM - Post#2808420
Time to replace catalytic converters in my 95 LT1. 169,000 miles and will be 26 years old next month... Any experience or advice in this matter will be appreciated.
Don
PS Haynes Manual does not touch it.
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 sixty5short
"18th Year" Gold Supporting Member
Posts: 1611
Loc: NC
Reg: 05-20-02
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02-24-21 11:40 AM - Post#2815017
In response to Highlander1
Just curious, why replace them?
- "sixty5short"
'65 C10 Shortbed Fleetside
'60 Impala 2 dr
'57 210 2dr Sedan
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 rockfangd
"8th Year" Gold Supporting Member
Posts: 3100
Age: 35
Loc: Utica ny
Reg: 04-13-10
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03-01-21 07:38 PM - Post#2815382
In response to sixty5short
Unless there is something wrong with them I would not replace them. More info could definitely help here.
Was there running issues that could have damaged them?
I run well over 200k on my GMs of this era without even knowing they are there.
| Old School GM fan FOREVER |
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Bill K.b
Senior Member
Posts: 4513
Loc: upstate NY
Reg: 10-24-05
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04-06-21 10:22 PM - Post#2817627
In response to Highlander1
Generally these only get replaced when rusted out or clogged up. And if you have no emissions inspection in your state you can just knock the guts out and put them back.
As to how to do it, it's just unbolting some very rusty/stubborn bolts and hoping your pipes mate up to whatever replacement you bought.
On the 1995 G30 I once had, it came with a cat and a broken pipe and I discovered for some reason it had the headers for a pickup and would use a much more expensive 1-piece Y and cat. Or I could change the manifolds and use a $120 Y-pipe and the cat I had. For the $20 at the junkyard I changed the manifolds.
Those who can, do. Those who can't, criticize it on the internet.
Driving 2002 Express 2500
2002 Express 2500 extended
1988 G20 conversion
1993 GMC 3500 dually
Plus cars for swap and sale
& yes, I once tried a frame swap on a 51 Chevy. |
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