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Bus Discussion => Bus Topics ( click here for quick start! ) => Topic started by: hogi6123 on November 04, 2021, 06:27:06 AM

Title: Exhaust pipe broken
Post by: hogi6123 on November 04, 2021, 06:27:06 AM
8v92t, I pulled over for the night, and in the morning my exhaust pipe is broken through completely between the engine and turbo.   Is this more serious than just no turbo, or can I still drive it?  What pressure is usually in there?
Title: Re: Exhaust pipe broken
Post by: chessie4905 on November 04, 2021, 06:35:58 AM
Is it on a straight section where you can install a band clamp for temp fix? If the flange on end of pipe where it attaches to the turbo has broken off, you can buy a stub flange and have it welded to pipe if in decent condition, or use a band clamp temporally. You don't  want to run it as is since exhaust temp off turbo is hot enough to cause a fire and permanently black stain everything in engine compartment.
Title: Re: Exhaust pipe broken
Post by: hogi6123 on November 04, 2021, 07:04:26 AM
It's right at the flange.  I'm at a rest area in the middle of Wyoming, I'm thinking of trying to tape or clamp something over it.
Title: Re: Exhaust pipe broken
Post by: chessie4905 on November 04, 2021, 07:17:10 AM
Is that cast iron on bottom? If not, you could remove v clamp and cut off flange from that pipe. Install band clamp. If cast iron, remove v clamp, remove broken flange, find a replacement stub, measure and cut enough off old pipe to fit. Reinstall v clamp and secure the two pieces with band clamp. For emergency repair, buy a muffler repair kit, wrap the bad joint according to instructions.
Title: Re: Exhaust pipe broken
Post by: luvrbus on November 04, 2021, 07:22:10 AM
PC Industries in Afton Wy (1-877-885-4724) should have the pipe if you are close that the standard pipe for a top mounted turbo.Those are not your standard flanges you find in auto parts the bevel is different on Detroit's and when you find one they are about 50 bucks ea,the replacement will slide over the pipe then welded   
Title: Re: Exhaust pipe broken
Post by: hogi6123 on November 04, 2021, 07:35:45 AM
Thanks, Afton is too far.  I have clamps with me but it may take a while to dig them out.  I also have some aluminum sheets, that should fit the bill.
Title: Re: Exhaust pipe broken
Post by: hogi6123 on November 04, 2021, 09:24:30 AM
Temporary repair, helping reduce litter even. LOL
Title: Re: Exhaust pipe broken
Post by: chessie4905 on November 04, 2021, 09:36:06 AM
Is that an aluminum can or candy wrapper?
Title: Re: Exhaust pipe broken
Post by: hogi6123 on November 04, 2021, 09:37:02 AM
Aluminum cans.
Title: Re: Exhaust pipe broken
Post by: chessie4905 on November 04, 2021, 09:41:44 AM
Beer cans work better after you empty them🤣

Here is a place that sells intake and exhaust parts if you have trouble locating parts for repair
https://www.truckpipesusa.com/
Title: Re: Exhaust pipe broken
Post by: buswarrior on November 04, 2021, 09:56:06 AM
Lovely recovery!

I like soup cans over beer cans, a bit more substance to them...

Busnuts, this is why you carry all that debris around with you, it just may get you going...

Raw materials matter!

Happy coaching!
Buswarrior
Title: Re: Exhaust pipe broken
Post by: hogi6123 on November 04, 2021, 10:09:23 AM
I needed the flexibility of the thin aluminum cans to seal over the lump of the flange.  They started to tear, so I put a second layer under each clamp.

No visible exhaust leaks on startup so we will be on our way and check on that repair later.
Title: Re: Exhaust pipe broken
Post by: Tedsoldbus on November 04, 2021, 10:50:14 AM
Funny exchange AND educational. I'd still be there or hitchhiking to Afton....
Title: Re: Exhaust pipe broken
Post by: luvrbus on November 04, 2021, 12:54:44 PM
Quote from: Tedsoldbus on November 04, 2021, 10:50:14 AM
Funny exchange AND educational. I'd still be there or hitchhiking to Afton....

He could still drive the bus he wasn't down,traffic behind him would be little up set with the black smoke though
Title: Re: Exhaust pipe broken
Post by: hogi6123 on November 04, 2021, 02:59:16 PM
The aluminum got blown out pretty quickly...

Air hose just above is melting.  Will try again with a slightly different method.

No black smoke behind though.
Title: Re: Exhaust pipe broken
Post by: chessie4905 on November 04, 2021, 03:21:31 PM
Muffler wrap. Called J B  Exhaust Weld  patch. Wrap it and heat sets it up. Auto Zone, Amazon, Other Auto parts stores among others sell it. Good for 1100 degrees.
https://www.amazon.com/J-B-Weld-ExhaustWeld-Repair-Wrap/dp/B09BBHSJ9Z/ref=asc_df_B09BBHSJ9Z/?tag=hyprod-20&linkCode=df0&hvadid=532866442045&hvpos=&hvnetw=g&hvrand=8766692810777476817&hvpone=&hvptwo=&hvqmt=&hvdev=t&hvdvcmdl=&hvlocint=&hvlocphy=9006501&hvtargid=pla-1609016551872&psc=1

You want this, not muffler patch, since IT only good for 400°
Title: Re: Exhaust pipe broken
Post by: hogi6123 on November 04, 2021, 09:06:37 PM
Autozone didn't have the exact stuff you linked, but the stuff I got has held.  It said "For HOT applications, apply a layer of aluminum can over the hole first"  LOL.
Title: Re: Exhaust pipe broken
Post by: chessie4905 on November 05, 2021, 11:13:11 AM
hope that works.