Exhaust manifold leak

[McRoy]

Any experience with or advice for exhaust manifold leaks on 8.1 Workhorse.

I would really appreciate any help you can give me on this one.

2005 34 ft Allegro Open Road

[edgray]

Originally Posted by McRoy

Any experience with or advice for exhaust manifold leaks on 8.1 Workhorse.

I would really appreciate any help you can give me on this one.

2005 34 ft Allegro Open Road

My friend with a 2004 Allegro Bay on W22 just had his exhaust manifold GASKET replaced at Larry's Auto Clinic in MB, SC. It was a one day job, all the bolts came out without breaking any, and all were replaced with new bolts. He was quite pleased with the service and price charged by Larry's, which is a Authorized Workhorse Service center.

FWIW, the leak will only get worse over time, and "may" cause other problems if not repaired. "Git-R-Done" somewhere, it ain't rocket science and any good shop should be able to do it, from inside the wheel well.
Ed

[McRoy]

Thanks Ed, that's good advice. I have the exhaust issue resolved as of today.

I will post my experience with this issue in hopes it could be of use to some one else on here.

I purchased this 2005 Allegro Open Road 8.1 last week from a gentleman that had owned it since it had 3,400 miles, it now has 17,345

It had an exhaust leak the first time we drove it, I didn't say anything to the owner about it, I figured I would take care of that since he was putting a check in for 1/2 the amount of the check I gave to pay the coach off, in other words he owed 1/3 more on it than I paid him for it.

Tuesday 10/29/13 I took it in to our local Work Horse authorized dealership for a recall and exhaust leak, they did the recall but found that someone had tried to weld the manifold to the engine head, They wouldn't touch that.
I took it to a friend who owns a trucking co. and has a maintenance shop where he does their work and will do work for me as a favor for a fee. His tech pulled it down and found that there was two manifold bolts broken off, he drilled them out cleaned everything up and I am now as good as new, what a relief.
I figured from the pictures I would have to have a manifold, the only part I needed was new bolts and a manifold gasket.
The W/H dealer had checked on the availability of a manifold just in case, and found a dealer in N.Y. to have the only one in captivity. I'm in Charlotte N.C. Retail on the parts $800.00 plus, my cost $500.00 plus and delay my trip to Fl. next week.
Now that's my exhaust story on my 8.1 engine hope it helps someone else.

[Arch Hoagland]

I've had both mine replaced along with one head due to a hole drilled through the water jacket when they were drilling out the broken stud. All was covered under warranty.

If you've got a leak it's best to get it repaired soon as possible like edgray mentioned.

[edgray]

Originally Posted by McRoy

Thanks Ed, that's good advice. I have the exhaust issue resolved as of today.

Tuesday 10/29/13 I took it in to our local Work Horse authorized dealership for a recall and exhaust leak, they did the recall but found that someone had tried to weld the manifold to the engine head, They wouldn't touch that. .........
......tech pulled it down and found that there was two manifold bolts broken off, he drilled them out cleaned everything up and I am now as good as new, what a relief.
I figured from the pictures I would have to have a manifold, the only part I needed was new bolts and a manifold gasket.......
Now that's my exhaust story on my 8.1 engine hope it helps someone else.

Glad to learn you are fixed and good to go. THANKS for your excellent explanation of what was required to fix your exhaust leak. I'm amazed to hear what you found about the previous "repair" , which obviously did not work.

FWIW, I've also heard that some broken manifold bolts can be removed by having a nut welded to the stud remaining in the head and then using penetrating fluid and some carefully applied torque to extract, rather than drilling out, the broken bolt.

Like you, I'm just hoping this someone else.
Ed

[prsmith]

Originally Posted by edgray

FWIW, the leak will only get worse over time, and "may" cause other problems if not repaired. "Git-R-Done" somewhere, it ain't rocket science and any good shop should be able to do it, from inside the wheel well.
Ed

Ed! What sort of problems will be encountered if fix is delayed?

I have a leak and live in NS Canada where there are no WH dealers. I was thinking of having it fixed when I hit Texas in about 7 weeks after a 3000 mile drive down.

Thanks,

Preston

[H. Miller]

Originally Posted by prsmith

Ed! What sort of problems will be encountered if fix is delayed?
Preston

It's called fire... That escaping gas is 1000 - 1200 deg. F

[prsmith]

Originally Posted by H. Miller

It's called fire... That escaping gas is 1000 - 1200 deg. F

Thanks Hal. My old head never even thought of fire. I was thinking potential problems being more along the lines of escaping gases eroding manifold and head sealing surfaces

Preston