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HackAl Samba Member
Joined: March 12, 2016 Posts: 338 Location: Bergen County, NJ
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Posted: Thu Oct 29, 2020 7:45 am Post subject: Exhaust pipe crack. |
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So when I was getting my brakes fixed, the mechanic discovered this.
Which cylinder is this for? The part is under 150 bucks so I doubt welding is worth it, especially if it would need to come out anyway.
Would JBWeld get me through until the new part comes?
Thanks for any thoughts or suggestions. _________________ 91 Westy.
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dobryan Samba Member
Joined: March 24, 2006 Posts: 16505 Location: Brookeville, MD
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MarkWard Samba Member
Joined: February 09, 2005 Posts: 17154 Location: Retired South Florida
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Posted: Thu Oct 29, 2020 7:57 am Post subject: Re: Exhaust pipe crack. |
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On my phone it looks like cylinder 2. It is totally worth welding the crack. It seems to be accessible installed. If not, removing it is a bit of a pain. Shipping on exhaust is expensive. Check CIP1. They are having a moving sale. _________________ ☮️ |
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HackAl Samba Member
Joined: March 12, 2016 Posts: 338 Location: Bergen County, NJ
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MarkWard Samba Member
Joined: February 09, 2005 Posts: 17154 Location: Retired South Florida
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Posted: Thu Oct 29, 2020 8:18 am Post subject: Re: Exhaust pipe crack. |
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“2” _________________ ☮️ |
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DanHoug Samba Member
Joined: December 05, 2016 Posts: 4794 Location: Bemidji, MN
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Posted: Thu Oct 29, 2020 2:52 pm Post subject: Re: Exhaust pipe crack. |
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yeah, i'd try welding first. take it to an exhaust shop. an old one with a purple '69 Charger parked in front and the skinny guy with a mullet doing the work. it's the only job he's had since high school and he's rilly good at it! _________________ -dan
60% of what you find on the internet is wrong, including this post.
'87 Westy & '89 Westy both 2.1 4spd
Past projects can be found at--
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HackAl Samba Member
Joined: March 12, 2016 Posts: 338 Location: Bergen County, NJ
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Posted: Thu Oct 29, 2020 3:04 pm Post subject: Re: Exhaust pipe crack. |
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Okay, but this is North Jersey so it's an 87 IROC and he's got slicked back hair, cropped on the sides with lines.
I can buy these pipes from Bus Depot for $150 shipped. You really think a weld would be much cheaper? I also can't imagine a blowtorch that close to my fuel lines, so these pipes would have to come out anyway, right? _________________ 91 Westy.
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MarkWard Samba Member
Joined: February 09, 2005 Posts: 17154 Location: Retired South Florida
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Posted: Thu Oct 29, 2020 3:22 pm Post subject: Re: Exhaust pipe crack. |
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It would likely be mig welded at an exhaust shop. A welder might TIG it. Low risk of a fire.
When you go to replace that simple exhaust and you snap a stud, you’ll really be wishing you’d have attempted welding it in place.
There’s an older thread. Owner tried this simple task an in the end it needed new cylinder heads and the van was off the road 6 months. He was head strong and went against advice. _________________ ☮️ |
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HackAl Samba Member
Joined: March 12, 2016 Posts: 338 Location: Bergen County, NJ
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Posted: Thu Oct 29, 2020 3:44 pm Post subject: Re: Exhaust pipe crack. |
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Mark, you just scared the crap out of me.
Point well taken. _________________ 91 Westy.
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campism Samba Member
Joined: September 07, 2007 Posts: 4492 Location: Richmond VA
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Posted: Thu Oct 29, 2020 3:45 pm Post subject: Re: Exhaust pipe crack. |
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MarkWard wrote: |
When you go to replace that simple exhaust and you snap a stud, you’ll really be wishing you’d have attempted welding it in place. |
Valid point. If you can find a welder who will attempt the repair it is certainly worth a try. Having broken an exhaust stud when replacing the system on my van I can assure you that you do not want that additional hassle. _________________ '87 Westy in Wolfram Grey Metallic |
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pdm777 Samba Member
Joined: August 06, 2012 Posts: 348 Location: Clovis, CA
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Posted: Thu Oct 29, 2020 3:58 pm Post subject: Re: Exhaust pipe crack. |
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My Tiico had a serious crack -all the way around- the pipe.
Good Advise! I found a small local muffler shop with 70's musclecars
parked in front, and got it welded for only $20 !!!!
And it's a heck of a weld, very thick.
I did take the exhaust manifold off first.
Take it to a specialist for removal, or take your time and
cut off the header nuts with a Dremel, then clean up the threads.
There was no way to weld it properly while it was on the head.
No way JB weld or any 'glue' is going to repair that. _________________ 1990 Westy Full Camper |
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IdahoDoug Samba Member
Joined: June 12, 2010 Posts: 10251 Location: N. Idaho
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Posted: Thu Oct 29, 2020 8:41 pm Post subject: Re: Exhaust pipe crack. |
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PDM,
I think you missed the point. You took your exhaust manifold off to have it repaired. The "good advice" here is NOT to take it off. Do NOT cut bolt heads off with a Dremel, etc. Get it welded on the car by someone who's worked at an exhaust shop forever and they're out there, for sure.
On JB Weld, you'd think I would be their saleman. But yes there is a "steel" hi temp version who's name escapes me but it works directly on hot exhausts. I have it on the cracked manifold of my '88 Mitsubishi Van and it's lasted 6 years of a 16yo teenage son who's offroaded it, overloaded it, bashed it around, etc. The manifold is a known issue so I have a spare in the garage for when this fix fails. So far, I'm impressed.
Our 97 LandCruiser has been a beneficiary as well. It now has a new exhaust system, but our daughter used it in Michigan for 4 years at college where it remained parked all summer and used all winter. At 287k, the original exhaust succumbed to the Michigan salt baths and the Y pipe cracked. I filled it with this JB Weld product while there for parent's weekend a couple years ago with no tools to properly prep the surfaces, etc. Then the next year the Oxy sensor bung rusted off and the sensor hung by a wire. Again with no time to devote to it, I circled the bung hole with the Epoxy, then simply bedded it down and held the mess in place with masking tape overnight. In the morning I took a fresh container of the Epoxy and smoothed it over further. Lasted nearly 2 years and when I removed the old exhaust both fixes were still fine.
So, never underestimate the stuff. However, don't do this if you're bringing it to a welder. He or she will likely shake their head and turn you down as that stuff will be a nightmare to get out of the way... _________________ 1987 2WD Wolfsburg Vanagon Weekender "Mango", two fully locked 80 Series LandCruisers. 2017 Subaru Outback boxer. 1990 Audi 90 Quattro 20V with rear locking differential, 1990 burgundy parts Vanagon. 1984 Porsche 944, 1988 Toyota Supra 5 speed targa, 2002 BMW 325iX, 1982 Toyota Sunrader |
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pdm777 Samba Member
Joined: August 06, 2012 Posts: 348 Location: Clovis, CA
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Posted: Thu Oct 29, 2020 8:50 pm Post subject: Re: Exhaust pipe crack. |
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Yep, JB Weld is amazing.
I've repaired intercoolers, gas lines, oil pans,
much more than I'd care to admit.
Never tried the exhaust repair JB.
Like you mentioned, if it fails, no welder will touch it
after you've goobered up a manifold pipe.
Seemed like a half ass hillbilly solution at first.
Now I believe !!!!!!!
Now I never leave home without it.
Along with a roll of self healing silicon tape. _________________ 1990 Westy Full Camper |
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HackAl Samba Member
Joined: March 12, 2016 Posts: 338 Location: Bergen County, NJ
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Posted: Fri Oct 30, 2020 3:08 pm Post subject: Re: Exhaust pipe crack. |
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Closing loop: Meineke got this done for 200 bucks. I told them only to proceed if they could free up the pipe without cracking the stud. They could not weld in place. They cut the exhaust pipe on one side so only two bolts had to come out. They then welded the inside of the area near the flange in addition to the outside but only minimally to avoid blocking the stud for future removal. They did a good job as far as I can tell. The rig definitely sounds better now. Considering pipes and shipping would have been 150 alone, I'm happy with this result.
I'll try to post a picture later. _________________ 91 Westy.
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Wildthings Samba Member
Joined: March 13, 2005 Posts: 50351
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Posted: Fri Oct 30, 2020 4:14 pm Post subject: Re: Exhaust pipe crack. |
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What I like to do is lay a full coat of weld bead over the bend in the pipe, this area gets really thin from the exhaust gases eroding the outside of the bend and in the long run the thin metal makes welding the crack ineffective as the thin metal will just crack again at the edge of the weld. I have had good luck with having a new elbow welded in so the metal if full thickness.
Last edited by Wildthings on Sat Oct 31, 2020 9:08 am; edited 1 time in total |
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campism Samba Member
Joined: September 07, 2007 Posts: 4492 Location: Richmond VA
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Posted: Sat Oct 31, 2020 5:31 am Post subject: Re: Exhaust pipe crack. |
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HackAl wrote: |
They could not weld in place. They cut the exhaust pipe on one side so only two bolts had to come out. They then welded the inside of the area near the flange in addition to the outside but only minimally to avoid blocking the stud for future removal. |
Clarification, please? Sounds like they cut the pipe at some distance from the flange, removed the cracked section from the head, welded the crack and reinstalled that section. Presumably they then welded up the cut they had made in order to remove that section? _________________ '87 Westy in Wolfram Grey Metallic |
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HackAl Samba Member
Joined: March 12, 2016 Posts: 338 Location: Bergen County, NJ
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Posted: Sat Oct 31, 2020 6:08 am Post subject: Re: Exhaust pipe crack. |
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Campism, correct.
_________________ 91 Westy.
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djkeev Samba Moderator
Joined: September 30, 2007 Posts: 32625 Location: Reading Pennsylvania
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HackAl Samba Member
Joined: March 12, 2016 Posts: 338 Location: Bergen County, NJ
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Posted: Sat Oct 31, 2020 6:48 am Post subject: Re: Exhaust pipe crack. |
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Dave, agree. The number of mechanics that I trust to work on my van around here are few and far between.
The guy who did the world work was 70 years old. A younger guy in the shop originally looked at it and wanted to charge 475 for basically the same work. I said thanks but no thanks and as they were dropping the van off the left, the older mechanic said, "wait a second." His name was Garfield.
The guy who did the brake job last week was younger but under the tutelage of an older BMW mechanic also in his '70s. That outfit is called Rennsport in Hackensack. Where they lack in Vanagon knowledge, they kind of make up for in work they've done on Porsches and other German makes. But more importantly, they, unlike any other mechanic with whom I've spoken, and I've spoken into dozens, are willing to read these threads on The Samba and look at the YouTube videos I show them. They are wise enough to know what they don't know and willing to learn and consider other points of view.
And I'm finding that that particular skill set is rare. I don't know if it is a generational phenomenon or not. _________________ 91 Westy.
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DanHoug Samba Member
Joined: December 05, 2016 Posts: 4794 Location: Bemidji, MN
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Posted: Sat Oct 31, 2020 6:52 am Post subject: Re: Exhaust pipe crack. |
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djkeev wrote: |
It seems that older cars are vanishing, older trade-ins are shipped to less affluent areas and buyers are encouraged to go new with frightening long finance periods.
The number of auto shops machine shops (I think these are down to zero locally) and even parts distributors has plummeted.
Case in point, the last time I tried I could not locally purchase plastigauge. A staple product in engine rebuilding.
Repair shops pull codes and switch out indicated parts or replace obviously worn parts such as brakes and suspension.
Dave |
that's interesting on the parts distributors... in our town of 12,000 in northern MN, we have 6 of them. all pretty heavily stocked. but then we are the quintessential "less affluent" community where those high mile auction cars end up.
machine shops, uff, we are down from 4 to one very tired one that i hesitate to bring stuff to. there's another one 85 miles away that is so fastidious you essentially enter thru an 'airlock' where you are stopped if your parts are too dirty. that guy tried to get his son interested, no go, and instead of selling his machines for 10 cents on the dollar, decided to keep going thru 'retirement'. he said there is no market for machine equipment. _________________ -dan
60% of what you find on the internet is wrong, including this post.
'87 Westy & '89 Westy both 2.1 4spd
Past projects can be found at--
www.thefixitworkshop.com |
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