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Up pipes question
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Elder User
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From: Quaker Hill
Up pipes question
Hi guys! I usually hang out over in the 99-03 7.3 section, but I just picked up a 95 7.3 and had a question. I have a huge exhaust leak on this baby, and want to change my pipes out in a while. I'm planning on yanking the engine and going through everything in a few weeks, so I'd do them then. I'm not really excited about the price of up pipes on these older 7.3's and wonder if there's something I can replace them for under $400? Any ideas are appreciated! Thanks.
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Read threw this thread, bill made his own billowed uppies. https://www.ford-trucks.com/forums/1...-up-pipes.html
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From: West Des Moines, IA
Read threw this thread, bill made his own billowed uppies. https://www.ford-trucks.com/forums/1...-up-pipes.html
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From: Southern West Virginia
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Joined: Jan 2012
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From: Southern West Virginia
Jeb, there are a couple things I do different on those now. I don't use the half of donut gasket anymore, and the on the measurements where you cut the section out for the bellows, cut 3/4" on the bottom, and 3/8" on the top. Only let the pipe go in that end 3/8".
That's all I can say now because anything more could be considered by some as "mindless chatter"....and we don't want that now do we
. If you decide to do these and I can help you in any way, just let me know bud 
That's all I can say now because anything more could be considered by some as "mindless chatter"....and we don't want that now do we
. If you decide to do these and I can help you in any way, just let me know bud
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Joined: Mar 2012
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From: Quaker Hill
I bought this truck from a friend of mine with the intentions of going through it this winter. Due to an unexpected engine pull on Smokie, my flatbed, I was forced to register this thing today, and actually drove it for the first time. I heard the leak, and peeked through the wheel well to see a hole in the cylinder head, just above the exhaust port. Looks like a chunk broke/rusted off the head, and then a hole from an exhaust leak developed. So at this point, I'm not sure if I need to do up pipes or not. As soon as I get Smokie up and running again, I'll be pulling the engine in 'Pops' and dealing with it. I'm wondering though, what's the benefit of bellowed up pipes? I'm not asking rhetorically, I'm 100% curious. Is it durability, less likely to leak, or more HP?
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From: Southern West Virginia
The bellowed up pipes eliminate the donut gasket at the collector. The exhaust leaks between the donut and the pipe, and actually eats away at the pipe. With a solid flange and gasket at the collector, it eliminates that leak, but then you have to have the bellows added to allow the pipes to move since you now have them bolted solid at the collector. With the factory donut gaskets, the pipes could slide in and out a little.
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Elder User
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From: Quaker Hill
Ok, that makes sense to me. So when I pull the engine, should I switch to bellows if the pipes are in good shape, or just change the gasket out and call it good? This truck is going to be a backup plow and dump truck for my business and won't be a DD. Thanks guys!