Broken Exhaust Manifold studs
Racer
Joined: Jul 2003
Posts: 446
Likes: 1
From: Washington PA
Re: Broken Exhaust Manifold studs (Vic'89)
I broke two off Saturday morning. I removed the exhaust piece with the cat and drilled and tapped both. I had some all-thread laying around, so I cut 2 lenghts off and used it on both. I know its kind of a half-a%! fix, but I had to get it finished in a very short period of time. So far so good, but I'm not sure how long they will last. good luck!
Melting Slicks
Joined: Jan 2000
Posts: 3,418
Likes: 1
From: NW Chicago Suburbs
Re: Broken Exhaust Manifold studs (Vic'89)
When I had this happen (on another car), I just pulled the manifold off and then I was able to use a bench vise to hold onto the little nub that was left. A little Liquid Wrench, 24 hours of soaking then I just twisted the manifold while the bench vise held onto the nub/stud.
If that fails you can take it to a machinist, or buy a used one from a salvage yard.
Eric
If that fails you can take it to a machinist, or buy a used one from a salvage yard.
Eric
Go Fast
Joined: Jan 2002
Posts: 1,691
Likes: 92
From: Colorado Springs CO
Re: Broken Exhaust Manifold studs (silver & red CE)
I also had this happen on another vehicle a few years ago. I was uncomfortable drilling out the stud myself so I took it to a shop who did the same anyway. To make a long story short they tried to do it ont the car and @(*$@ it up and hit a water jacket. My advise is take the head off and drill it out unless you have a clear shot with a drill will the head is still on the car.
my .02 from past experience
my .02 from past experience
Thread Starter
Safety Car
Joined: Jun 2000
Posts: 4,870
Likes: 25
From: Long Island, NY
Re: Broken Exhaust Manifold studs (65Z01)
Vic, are you talking about one of the three studs that holds the manifold to the front Y?
I am talking about the Ypipe bolts that connect to the exhaust manifold.
Vic
Race Director
Joined: Aug 2000
Posts: 14,130
Likes: 7
Cruise-In II Veteran
Re: Broken Exhaust Manifold studs (Vic'89)
Vic,
These are a common problem on these manifolds....I had this happen to me before.I took the manifolds off and went to my local Meineke and the guys there torched them out for me and put new studs in.Was an easy fix for them.
And was real cheap.While these guys are a chain,I knew the guys there and they always did good exhaust work and never let me down.All the bad rusted studs were torched out and fresh new ones installed.
I also bought stainless steel nuts for each of the 3 studs for the Y pipe and this keeps corrosion down and prevents the nuts from rust-welding to the studs to ease any future removal needs.Its come in handy a few times already when I did some other work.
FYI,new studs are usually 7-9 bucks and a few more dollars for install.
:)
These are a common problem on these manifolds....I had this happen to me before.I took the manifolds off and went to my local Meineke and the guys there torched them out for me and put new studs in.Was an easy fix for them.
And was real cheap.While these guys are a chain,I knew the guys there and they always did good exhaust work and never let me down.All the bad rusted studs were torched out and fresh new ones installed.
I also bought stainless steel nuts for each of the 3 studs for the Y pipe and this keeps corrosion down and prevents the nuts from rust-welding to the studs to ease any future removal needs.Its come in handy a few times already when I did some other work.
FYI,new studs are usually 7-9 bucks and a few more dollars for install.
:)
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
Team Owner
Joined: May 2002
Posts: 24,337
Likes: 25
From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
Re: Broken Exhaust Manifold studs (BAM92)
The problem is...
when you overtighten the nuts, it bends the clamp and cinches up on the studs, damaging the threads, and making it impossible to slip on and off.
I used a rattail file to oblong the holes outward more before reinstalling mine.
You should be able to find replacement studs at your local hardware store for pocket change.
when you overtighten the nuts, it bends the clamp and cinches up on the studs, damaging the threads, and making it impossible to slip on and off.
I used a rattail file to oblong the holes outward more before reinstalling mine.
You should be able to find replacement studs at your local hardware store for pocket change.
Safety Car
Joined: Aug 2002
Posts: 4,812
Likes: 1
From: New Albany IN
St. Jude Donor '03-'04-'06-'08-'09
Re: Broken Exhaust Manifold studs (BAM92)
Did the same thing and went the lazy way out....which ended up being a big mistake...I tried drilling the old stud out from the top...use a really long drill bit extensive and drilled...and drilled...and drilled...and drilled...went through 5-6 bits until I started to put water on it to cool it down...and drilled..and drilled....finally after about 6 hours of agony I finally fixed it........do it right....take it off and have someone do it..or upgrade to headers :)
Team Owner
Joined: Mar 2000
Posts: 83,383
Likes: 87
From: Boston, MA
Re: Broken Exhaust Manifold studs (BAM92)
Time to upgrade to headers!!!!!
Thread Starter
Safety Car
Joined: Jun 2000
Posts: 4,870
Likes: 25
From: Long Island, NY
Re: Broken Exhaust Manifold studs (scorp508)
Time to upgrade to headers!!!!!
Yeah Vic get with the program. You should know by now that a $2.00 broken stud requires at least $600 in headers to fix it. :D
Yeah Vic get with the program. You should know by now that a $2.00 broken stud requires at least $600 in headers to fix it. :D
Vic
Team Owner
Joined: Mar 2000
Posts: 83,383
Likes: 87
From: Boston, MA
Re: Broken Exhaust Manifold studs (Vic'89)
Ok , please provide the info. I want the Hooker supercomps.
HOK-2149 : $479.95
HOK-16720: $139.95
You'll also need new exhaust manifold gaskets (like $13 at Autozone for Felpro) and 3" collector gaskets. I use SUM-610300 ($9.95) for collector gaskets. They are a dead soft aluminum.
