[L98] Another Stupid Cat Question...
Thread Starter
Le Mans Master
Joined: May 2003
Posts: 8,175
Likes: 237
From: Philadelphia Burbs
Cruise-In V Veteran
St. Jude Donor '06
[L98] Another Stupid Cat Question...
Several vendors sell a "Catalytic Converter Insulator. Rear" for L98 C4s. Where does it go? What does it do? I'm guessing it insulates something, but what? Is this same as a "Catalytic Converter Flange Gasket"?
Just posting this on the chance that somebody might know...
Just posting this on the chance that somebody might know...
Pro
Joined: Sep 2005
Posts: 747
Likes: 0
From: Calgary '85 Z51 coupe
Originally Posted by Corvette Kid
Perhaps to insulate the floor from the heat of the main cat?
Gasket for the flange would be where it bolts up to the rest of the system. The '85 model has a flange at either end.
Thread Starter
Le Mans Master
Joined: May 2003
Posts: 8,175
Likes: 237
From: Philadelphia Burbs
Cruise-In V Veteran
St. Jude Donor '06
Originally Posted by Steel Blue 91
Probably reference to the main cat vs. the pre cats.
Team Owner
Joined: May 2002
Posts: 24,337
Likes: 25
From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
Correct. No front cats. The cat has a heat shield that attaches to some small brackets that attach to the 4-bolt flanges. Also, the front Y pipe clamp has a small sort of heat shield over it at the front of the cat.
I didn't think GM used any gaskets on the 4-bolt flanges (or any of the exhaust connections after the head). But if there is some, I'd like one.
Do you want me to look for mine? theres a chance I still have some of these parts.
I didn't think GM used any gaskets on the 4-bolt flanges (or any of the exhaust connections after the head). But if there is some, I'd like one.
Do you want me to look for mine? theres a chance I still have some of these parts.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Melting Slicks
Joined: Jun 2004
Posts: 3,032
Likes: 4
Do you still have all the parts that were taken off your car?
You should have two sections of that heat shield that was above your cat. One big piece that covered just about the whole thing, and a smaller piece that bolts to the rear flange, and (If I'm remembering right) to the hanger.
I can't say for sure though, it's been a while since I had mine apart. But that's what my guess would be at that piece.
You should have two sections of that heat shield that was above your cat. One big piece that covered just about the whole thing, and a smaller piece that bolts to the rear flange, and (If I'm remembering right) to the hanger.
I can't say for sure though, it's been a while since I had mine apart. But that's what my guess would be at that piece.
Thread Starter
Le Mans Master
Joined: May 2003
Posts: 8,175
Likes: 237
From: Philadelphia Burbs
Cruise-In V Veteran
St. Jude Donor '06
Originally Posted by CentralCoaster
Do you want me to look for mine? theres a chance I still have some of these parts.
CC goes off on another wild goose chase for restoration issues he would never have to worry about if he hadn't been nice to j3studio in the first place
Thread Starter
Le Mans Master
Joined: May 2003
Posts: 8,175
Likes: 237
From: Philadelphia Burbs
Cruise-In V Veteran
St. Jude Donor '06
Originally Posted by mikey whipreck
You should have two sections of that heat shield that was above your cat. One big piece that covered just about the whole thing, and a smaller piece that bolts to the rear flange, and (If I'm remembering right) to the hanger.
Thread Starter
Le Mans Master
Joined: May 2003
Posts: 8,175
Likes: 237
From: Philadelphia Burbs
Cruise-In V Veteran
St. Jude Donor '06
Originally Posted by zr1fred
The 84-5's used a "square' CAT and there are gaskets (insulators?) on both ends.
Thread Starter
Le Mans Master
Joined: May 2003
Posts: 8,175
Likes: 237
From: Philadelphia Burbs
Cruise-In V Veteran
St. Jude Donor '06
Originally Posted by bogus
I wonder what NCRS would think about those not being present?