Broken exhaust manifold stud hole
#1
Team Owner
Thread Starter
Member Since: Aug 2008
Location: Rochester NY
Posts: 31,358
Received 5,010 Likes
on
2,529 Posts
St. Jude Donor '09-'10-'11-'12-'13-'14-'15-'16-'17-'18-‘19-'20-'21-'22-'23-'24
Broken exhaust manifold stud hole
The right side exhaust manifold (327/250) has a piece cracked off at the bottom. What's the thoughts between having a welder build it up and re-bore, vs. buying a replacement?
#2
Le Mans Master
Member Since: Jul 2018
Location: San Antonio, TX/Mahopac, NY
Posts: 8,380
Received 5,554 Likes
on
2,797 Posts
2024 Corvette of the Year Finalist - Modified
2024 Corvette of the Year Finalist - Unmodified
2023 C7 of the Year Winner - Modified
Weld and bore. Fairly standard repair.
#3
Le Mans Master
If the welder is sufficiently talented, it can be very effective and almost as good as new.
The challenge is to get the new hole/stud parallel to the other two studs. If they aren't parallel it can be a bear to get the header pipe attached. Then you may find yourself having to screw the repaired stud into the manifold last to get it to fit.
New reproduction manifolds are not that expensive. What is your goal for the car? A driver or a judged car?
Good luck... GUSTO
The challenge is to get the new hole/stud parallel to the other two studs. If they aren't parallel it can be a bear to get the header pipe attached. Then you may find yourself having to screw the repaired stud into the manifold last to get it to fit.
New reproduction manifolds are not that expensive. What is your goal for the car? A driver or a judged car?
Good luck... GUSTO
#4
Team Owner
Member Since: Mar 2003
Location: Greenville, Indiana
Posts: 26,118
Received 1,843 Likes
on
1,398 Posts
Used manifolds are cheap and plentiful.
#5
Safety Car
If you can find someone to weld it properly is the question. I have an attachment that goes on an acetylene irg that works very well for gas welding cast iron. You use cast iron for filler so it produces a really nice weld. It's still not easy. Stick welding it with nickel always produces a crust between the parent metal and the filler because of the heat differential. This crust is extremely brittle and it may break there and the crust is very hard to machine and tap. I would just get another manifold.
#6
Team Owner
Thread Starter
Member Since: Aug 2008
Location: Rochester NY
Posts: 31,358
Received 5,010 Likes
on
2,529 Posts
St. Jude Donor '09-'10-'11-'12-'13-'14-'15-'16-'17-'18-‘19-'20-'21-'22-'23-'24
It will be a driver so I don't have to keep the original. And since it's a 2" exhaust I suppose they are in less demand than the 2 1/2's.
Anybody out there got a good deal on a 3750556?
Anybody out there got a good deal on a 3750556?
#7
Race Director
Member Since: Apr 2015
Location: Fresno California
Posts: 17,505
Received 3,443 Likes
on
2,113 Posts
#8
Team Owner
Member Since: Mar 2003
Location: Greenville, Indiana
Posts: 26,118
Received 1,843 Likes
on
1,398 Posts
You can buy a repop for about $50 if you can't find one somebody will give you to get it out of their way. Should be plenty in the bone yards or or engine core shops.
#9
Race Director
Mighty few boneyards have '70s or earlier cars or parts anymore.
They are called auto recyclers, now, and they don't have a back 40 full of old iron like the old days. Its damn hard to find original stamped steel 1960s SB covers without paying a fortune, anymore, they used to be free or almost free, everywhere.
Doug
They are called auto recyclers, now, and they don't have a back 40 full of old iron like the old days. Its damn hard to find original stamped steel 1960s SB covers without paying a fortune, anymore, they used to be free or almost free, everywhere.
Doug
#10
Team Owner
Member Since: Mar 2003
Location: Greenville, Indiana
Posts: 26,118
Received 1,843 Likes
on
1,398 Posts
Mighty few boneyards have '70s or earlier cars or parts anymore.
They are called auto recyclers, now, and they don't have a back 40 full of old iron like the old days. Its damn hard to find original stamped steel 1960s SB covers without paying a fortune, anymore, they used to be free or almost free, everywhere.
Doug
They are called auto recyclers, now, and they don't have a back 40 full of old iron like the old days. Its damn hard to find original stamped steel 1960s SB covers without paying a fortune, anymore, they used to be free or almost free, everywhere.
Doug
#11
Team Owner
Member Since: Mar 2003
Location: Greenville, Indiana
Posts: 26,118
Received 1,843 Likes
on
1,398 Posts
#12
Safety Car
Mighty few boneyards have '70s or earlier cars or parts anymore.
They are called auto recyclers, now, and they don't have a back 40 full of old iron like the old days. Its damn hard to find original stamped steel 1960s SB covers without paying a fortune, anymore, they used to be free or almost free, everywhere.
Doug
They are called auto recyclers, now, and they don't have a back 40 full of old iron like the old days. Its damn hard to find original stamped steel 1960s SB covers without paying a fortune, anymore, they used to be free or almost free, everywhere.
Doug
#13
Team Owner
Member Since: Apr 2008
Location: Coloring within the lines
Posts: 27,336
Received 1,919 Likes
on
1,332 Posts
#14
Drifting
Member Since: Aug 2005
Location: New Baltimore Michigan
Posts: 1,456
Received 624 Likes
on
364 Posts
Here is one for you, free of charge, how is that for a deal?
I've had it laying around for years m, it came with an old 283 I had bought.
I'll even ship it to you for free, PM me an address.
Last edited by Rob_64-365; 04-10-2019 at 05:09 PM.
The following 3 users liked this post by Rob_64-365:
#15
Team Owner
Member Since: Mar 2003
Location: Greenville, Indiana
Posts: 26,118
Received 1,843 Likes
on
1,398 Posts
You won't beat that deal.
#17
Race Director
Looks like it also may come with free dead spider also!.
That is mighty generous of you. I give away old parts now and then, but always asked for shipping costs, as they have gotten quite stratospheric.
Doug
That is mighty generous of you. I give away old parts now and then, but always asked for shipping costs, as they have gotten quite stratospheric.
Doug
#18
Drifting
Member Since: Aug 2005
Location: New Baltimore Michigan
Posts: 1,456
Received 624 Likes
on
364 Posts
I think that's a crusty fish fly skeleton, they get really thick around here in late june.
This manifold has been sitting on a shelf for years, happy to get rid of it to a fellow Corvette brother in need of it.
This manifold has been sitting on a shelf for years, happy to get rid of it to a fellow Corvette brother in need of it.
#19
Team Owner
Thread Starter
Member Since: Aug 2008
Location: Rochester NY
Posts: 31,358
Received 5,010 Likes
on
2,529 Posts
St. Jude Donor '09-'10-'11-'12-'13-'14-'15-'16-'17-'18-‘19-'20-'21-'22-'23-'24
Rob, thank you very much, I'll accept! I'm more than happy to reimburse you for the shipping etc!
We just got back home, I will PM you later after cleaning our some room in my PM box!
We just got back home, I will PM you later after cleaning our some room in my PM box!
The following users liked this post:
Rob_64-365 (04-10-2019)
#20
Team Owner
Member Since: Apr 2008
Location: Coloring within the lines
Posts: 27,336
Received 1,919 Likes
on
1,332 Posts
Gee, I don't know but I don't think you'll find a better deal than that.
Nice move, Rob.
Nice move, Rob.
Last edited by Easy Rhino; 04-10-2019 at 08:00 PM.