Down pipe - Ford Powerstroke Diesel Forum
 
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post #1 of 6 Old 01-19-2012, 04:01 PM Thread Starter
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Down pipe

Did my install today. Read a few of the write-ups and that got me through it rather quickly. I had to the bend on the flange as everyone stated. Then welded the flange that was on the end of the stock down-pipe to the new down-pipe. It then bolted directly to the cat. I dont have to run a cat where I live so a 3 1/2 piece of pipe got welded into that spot. Looks like a stock set up. I still have a hard time believing that the factory puts that little flat pipe in there.

1999 F-250 Crew cab
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post #2 of 6 Old 01-20-2012, 12:12 AM
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you welded part of the old pipe to your down pipe? that makes no sense, my down pipe only thing re used from the old set up from the factory was the clamp to the turbo

-Kris-
2000 excursion V10 2wd 230k
2000 Excursion 7.3 4x4 246k
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Dp tuner infinity, exhaust, intake, chipped, tricked, and wrecked
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Originally Posted by marine5811
The stock downpipe in an OBS is flat because I'm a ginger.
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Well at least you caught the loose bolts before they cause any damage. Nothing worse than a sloppy hole
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post #3 of 6 Old 01-20-2012, 12:26 AM
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why didn't you just go straight to 4 inch the whole way back?

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post #4 of 6 Old 01-20-2012, 03:27 AM Thread Starter
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The stock pipe is 3 1/2 so why do I need to change it? My down pipe was 3 inch and had just a cut end. I welded the flange off the cat that took it up to the 3 1/2. I then removed the cat with the 3 1/2 pipe. I was able to use the flange joint and then I was able to use the hanger.

1999 F-250 Crew cab
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post #5 of 6 Old 01-20-2012, 05:57 AM
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Quote:
Originally Posted by biff101 View Post
The stock pipe is 3 1/2 so why do I need to change it? My down pipe was 3 inch and had just a cut end. I welded the flange off the cat that took it up to the 3 1/2. I then removed the cat with the 3 1/2 pipe. I was able to use the flange joint and then I was able to use the hanger.
Thats the same way I do it, I clamp it though.

My Truck
97' F-250HD. ECLB. 66,000 miles. 7.3. E40D. 6637 Filter. 5" Exhaust. Deleted EBPV. CCV mod. 45 gal. Transferflow Rear Tank. Stock for now. Dana 60 in the works.
My Dad's
97' F-250HD. ECLB. 18x,xxx miles. 7.3. E40D. 6637 Filter. 4" Exhaust. TW Tunes. Work Truck.
97' F-250HD. ECLB. 150,000 miles. 7.3. E40D. 4" Exhaust. Work Truck.


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post #6 of 6 Old 01-20-2012, 03:47 PM
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i did mike in 4" after the DP but i clamped it also with a band clamp so if i ever need to remove it i can

FRANK THE TANK
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DIY INTAKE - HYDRA CHIP - MARTY'S E-FUEL - 250/200s
05 AXLE SWAP 3.73 - 2.5" PURE PERF. LIFT COILS - FOX SHOCKS
BTS TRANS - TYMAR DOWN PIPE - 4" EXHAUST
Waiting To Be Installed... gtx4294r, studs, springs, HPOP?

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You are so smart Frank, I dont care what Terry says.
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