exhaust resonance
Racer
Joined: Feb 2001
Posts: 381
Likes: 8
From: NORTH WEST PA
Re: exhaust resonance (jstruckel)
This is a fairly common problem and there are a variety of archived responses to your question. First, do a search of the archived topics on this subject you may find an answer to your question. Second you may want to provide more information, such as the type of exhaust you have on your car now and what you are trying to achieve.
As for myself, I took a set of Flowmaster mufflers off my 92 and replaced them with a set of Hooker Aerochamber mufflers from Summit for about $50 a piece. It helped to reduce the resonance but not totally eliminate it. Some people say cross over pipes help others said they didn't do anything. And lastly if you find something that works let us know.
Good Luck
Brian
As for myself, I took a set of Flowmaster mufflers off my 92 and replaced them with a set of Hooker Aerochamber mufflers from Summit for about $50 a piece. It helped to reduce the resonance but not totally eliminate it. Some people say cross over pipes help others said they didn't do anything. And lastly if you find something that works let us know.
Good Luck
Brian
Le Mans Master
Joined: Mar 2002
Posts: 5,300
Likes: 4
From: Mississauga, Ontario Corvettes were built to be driven...not trailered
St Jude Donor '07-'08-'09
Re: exhaust resonance (jstruckel)
ditto on Charcoal Grey 90's comment...Y pipe crossover balances the flow...you'll think its a completely different car...
[Modified by Quik86, 5:17 PM 4/3/2002]
[Modified by Quik86, 5:17 PM 4/3/2002]
Team Owner
Joined: Apr 2000
Posts: 27,818
Likes: 8
From: CT
Re: exhaust resonance (Nathan Plemons)
I have to say it once again, Gearing plays a BIG BIG part in resonance. Ask anyone with 2.59's and a decent exhaust. It drones and drones at highway speed. I had the same problem,and even tried putting the factory exhaust back on(BIG MISTAKE) not only did it kill about 80-100 HP no lie, it didn't solve the drone. It was still there, only quieter. Something good DID come out of that...I had the headers-y pipe re-coated(Looks like they'll need it again..but o well). In short, the 3.45's solved my problem. There is just something about that range that drives us all nuts. 3.07s should even be better. Minimum gears in an lt1 should be 3.54 (Or a track car 3.73)whereas the L98 would like up to a 3.45 max.
[EDIT] John G 92 has a Dyno-max exhaust with the supposed RESONANCE ELIMINATOR on His '87 with 2.59's. Same thing. Don't buy in to that rear Y pipe is a problem solver. Just for reference.
[Modified by JD 90 383, 7:16 PM 4/3/2002]
[EDIT] John G 92 has a Dyno-max exhaust with the supposed RESONANCE ELIMINATOR on His '87 with 2.59's. Same thing. Don't buy in to that rear Y pipe is a problem solver. Just for reference.
[Modified by JD 90 383, 7:16 PM 4/3/2002]
Racer
Joined: Mar 2001
Posts: 280
Likes: 0
From: Honolulu Hawaii
Re: exhaust resonance (Quik86)
Would adding the Crossover tube help on my 89 Coupe that has true dual exhaust without cats? It only has flowmaster mufflers. And where would the best location be for the crossover?
Thanks
-Tim (mariah@hawaii.rr.com)
Thanks
-Tim (mariah@hawaii.rr.com)
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
Pro
Joined: Nov 2000
Posts: 520
Likes: 0
From: Scranton PA
Re: exhaust resonance (Quik86)
Nice exhaust system Quik86, what is it?? I'm thinking of going with a catless set up but not sure which exhaust system will 1) look the best on my 89 2) sound good but not too loud 3) I would love to squeeze out some more HP....
Instructor
Joined: Dec 2000
Posts: 149
Likes: 0
From: Tacoma WA
Re: exhaust resonance (jstruckel)
I have an '86 and installed the LT1 type mufflers sold by Corvette Central. They design and build these mufflers. At idle and low rpm's they are quite quiet, but at full pedal they sound great. There is absolutely zero resonance from these mufflers. I'm very happy with the sound and the performance.
Burning Brakes
Joined: Sep 2001
Posts: 1,011
Likes: 0
From: Jupiter Florida
Re: exhaust resonance (RED92LT1)
a set of Hooker Aerochamber mufflers from Summit for about $50 a piece.
I assume you're not talking about the direct replacement units with dual three inch stainless tips. Really nice looking pieces, and you can literally look in the inlet and see out the outlet. :cool:
[Modified by rocketfinger, 6:52 PM 4/9/2002]
Burning Brakes
Joined: Aug 2000
Posts: 984
Likes: 1
From: Cincinnati OH
Re: exhaust resonance (84Coyote)
By the way, doesn't that cross over on the Y give more torque? I've heard that it does by helping out the pressure produced from the firing order of the motor.
Drifting
Joined: Jul 2001
Posts: 1,751
Likes: 1
From: Miami, FL, USA
Re: exhaust resonance (Vince Ivanc)
There was one post which said to block off on of te exits on each muffler with a rag or something and to run the car. I tried it and it sounded perfect, still hi-perf and throaty, but no resonance. The same post also said to use some plumbers parts to create a cap or block off which can be removed when needed. I cant find it anymore, but if someone figures out how to cap one of the exits, please post it. I cant hear a darn thing when I am in the car due to the resonance.
Jay, how did you get the fron of your car so low? I lowered mine and it only came down less than an inch.
Jay, how did you get the fron of your car so low? I lowered mine and it only came down less than an inch.