Weight savings with exhaust mods? - ZR-1 Net Registry Forums

KILLSHOTS · 10-26-2014

Screwing around in the garage the other day, lifting OEM exhaust pieces that I'm not sure why I saved and it got me thinking. We often talk about performance gains with exhaust mods but rarely mention weight savings. Has anyone ever taken the time to weigh any of the stock bits? Just one of my stock '90 exhaust manifolds feels like it weighs 40 pounds. I wonder how much weight I shaved from the car just by removing the entire OEM system and installing OBX headers and Corsa exhaust. Seems like it's gotta be 75-100 pounds net. Any thoughts?

efnfast · 10-26-2014

Because of the above, I've been pulling the air pump and related. I need to get under the car to remove the rest of the air lines.

Hog · 10-26-2014

F=MA

Shedding 100lbs is like adding 10hp or 1mph in the 1/4 mile trap speed on mid 3000lb cars.

GOLDCYLON · 10-26-2014

Quote:

Originally Posted by KILLSHOTS

Screwing around in the garage the other day, lifting OEM exhaust pieces that I'm not sure why I saved and it got me thinking. We often talk about performance gains with exhaust mods but rarely mention weight savings. Has anyone ever taken the time to weigh any of the stock bits? Just one of my stock '90 exhaust manifolds feels like it weighs 40 pounds. I wonder how much weight I shaved from the car just by removing the entire OEM system and installing OBX headers and Corsa exhaust. Seems like it's gotta be 75-100 pounds net. Any thoughts?

Never really thought about that Chris but the Corsa system is a little lighter than stock

XfireZ51 · 10-26-2014

Weight is one reason Crovette went w NPP exhaust actuators and eliminate the resonator.

PhillipsLT5 · 10-26-2014

My car weighed 3500 lb after mods, Mesa Police

KILLSHOTS · 10-26-2014

Quote:

Originally Posted by PhillipsLT5

My car weighed 3500 lb after mods, Mesa Police

So that's how the Mesa police punished you for doing that smoky burnout in their substation parking lot, Phil? They WEIGHED YOUR CAR?!

WARP TEN · 10-27-2014

I went back and looked up an old article I wrote on exhaust systems for the original Registry newsletter in the late '90s. As part of my research I had weighed the stock (from a '93), Borla and Corsa cat back systems. All three systems weighed an identical 64 pounds. --Bob

KILLSHOTS · 10-27-2014

Quote:

Originally Posted by WARP TEN

I went back and looked up an old article I wrote on exhaust systems for the original Registry newsletter in the late '90s. As part of my research I had weighed the stock (from a '93), Borla and Corsa cat back systems. All three systems weighed an identical 64 pounds. --Bob

Wow, that's shocking to me. My stock mufflers feel so heavy and I thought I remember the Corsa mufflers feeling much lighter, prior to being installed. Oh well, one area where I KNOW I shaved a bunch of weight is in the headers. The stock manifolds weigh a ton and the headers weigh almost nothing in comparison.

GOLDCYLON · 10-27-2014

Quote:

Originally Posted by KILLSHOTS

So that's how the Mesa police punished you for doing that smoky burnout in their substation parking lot, Phil? They WEIGHED YOUR CAR?!

Whaaaaat?

10-26-2014	#1
KILLSHOTS Join Date: Feb 2014 Location: AZ Posts: 860	Weight savings with exhaust mods? Screwing around in the garage the other day, lifting OEM exhaust pieces that I'm not sure why I saved and it got me thinking. We often talk about performance gains with exhaust mods but rarely mention weight savings. Has anyone ever taken the time to weigh any of the stock bits? Just one of my stock '90 exhaust manifolds feels like it weighs 40 pounds. I wonder how much weight I shaved from the car just by removing the entire OEM system and installing OBX headers and Corsa exhaust. Seems like it's gotta be 75-100 pounds net. Any thoughts?

10-26-2014	#2
efnfast Join Date: Nov 2011 Location: Dunbarton NH Posts: 7,242	Re: Weight savings with exhaust mods? Because of the above, I've been pulling the air pump and related. I need to get under the car to remove the rest of the air lines.

10-26-2014	#3
Hog Join Date: Jul 2010 Location: Woodstock, Ontario, Canada Posts: 1,275	Re: Weight savings with exhaust mods? F=MA Shedding 100lbs is like adding 10hp or 1mph in the 1/4 mile trap speed on mid 3000lb cars. __________________ peace Paul ZR-1 Net Registry Member #1494

10-26-2014	#5
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,662	Re: Weight savings with exhaust mods? Weight is one reason Crovette went w NPP exhaust actuators and eliminate the resonator. __________________ [SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX

10-26-2014	#6
PhillipsLT5 Join Date: Aug 2005 Location: Scottsdale, AZ Posts: 2,450	Re: Weight savings with exhaust mods? My car weighed 3500 lb after mods, Mesa Police

10-27-2014	#8
WARP TEN Join Date: Apr 2007 Location: Lake Bluff, IL Posts: 2,031	Re: Weight savings with exhaust mods? I went back and looked up an old article I wrote on exhaust systems for the original Registry newsletter in the late '90s. As part of my research I had weighed the stock (from a '93), Borla and Corsa cat back systems. All three systems weighed an identical 64 pounds. --Bob __________________ 2016 Long Beach Red Z06 #10281 "POPS Z" 1995 Polo Green #409 "WARP TEN"--Haibeck 350/510 package, 4.10s, Hurst, Stock Exhaust with QTP Cutouts --Sold but still running strong 1993 Quasar Blue #161 "HIL KING" --Sold but still running strong, now with more than 120,000 miles 1967 Marlboro Maroon/Saddle Corvette Coupe 300 hp/4-spd --Sold a long time ago ZR-1 Net Registry Founding Member #95 NCM Lifetime Member Favorite Quote--Attributed to Mickey Thompson: "Too Much Horsepower is Almost Enough" Last edited by WARP TEN; 10-27-2014 at 03:35 PM.