Finally changing the downpipe -?? - Ford Powerstroke Diesel Forum
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post #1 of 18 Old 06-14-2013, 06:19 AM Thread Starter
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Finally changing the downpipe -??

Well, I am finally changing out my downpipe with a Diamond Eye 4" this weekend. I will be connecting it to a straight 4" all the way back. I looked the job over and had some questions about the removal. Is it better to loosen the turbo clamp and wiggle it our with the full down pipe for leverage then make the cut or make the cut first then try to break it free with upper section? Should I expect that portion to be difficult? I thought heard somewhere the connection to the turbo is difficult to wiggle out. Upon inspection of the turbo I only see one clamp to loosen am I missing something in that area?

I have read a couple of threads with a couple of different ways to do it. I Thought I would check with you guys for advise to make the job as painless as possible. Any and all suggestions are very much appreciated.

The anticipation of removing that restricting factory pipe has reached a new level. I can't wait for some additional performance.

Thanks and all the best.

[I][B]2010 F-350 Lariat 4x4 CC LWB 3:55s RCD 450,KEM 210, & 250 11,500# GVRW

Last edited by Arco3580; 06-14-2013 at 06:21 AM. Reason: spelling
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post #2 of 18 Old 06-14-2013, 06:58 AM
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Drop it down as far as it will go and then cut it.

That pipe was hell on my Sawzall blade.
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post #3 of 18 Old 06-14-2013, 07:00 AM
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I just pulled my truck up on some ramps and was able to drop it out. Never had to cut nuttin.

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post #4 of 18 Old 06-14-2013, 07:55 AM
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Originally Posted by kinnisoj View Post
I just pulled my truck up on some ramps and was able to drop it out. Never had to cut nuttin.
You did this with a 6.4?
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post #5 of 18 Old 06-14-2013, 07:58 AM
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I dont think it's possible to get it out without cutting it. (besides pulling motor, etc)

good questions Arco, Ive got my DP (4" all the way as well) I need to install. Might work on that today. Good luck on yours!

2008 Job 3, F350, 6.4/drw/lariat/CC/LB, Spartan, Viper 5902, Line-X, Flo-pro egr delete, aFe stage 2 proguard 7, MBRP Cool Duals/downpipe/CAC, CCV mod, coolant filter PMF 7" 4link, Rigid Dually fogs, Royalty Core 3pc, Crown brake lines, Mishimoto Rad
6.4 Rebuild May/2015, BD manifolds+Uppipes, chromoly rods, rockers,lifters, hd springs
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post #6 of 18 Old 06-14-2013, 09:25 AM
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Yes there is only one clamp holding it on the turbo, undo the clamp from the engine bay, i didn't have any trouble.

Get the majority of the exhaust off and out of your way, then attack the dp, you'll want the room.

Take the clamp off then drop the dp down as far as you can then cut it with a sawzall, I used up a few blades. I hear you can drop it out in one piece if you can get the truck up in the air enough and if you remove the crossmember that's in you way.

It's not fun but it's not the worst thing I've done. And you will be happy with the results. It lowered my cruising egt's by a solid 100/125 degrees.

I also recommend wrapping the new dp with a high heat exhaust wrap. I used DEI titanium wrap, iirc it was the 2" by 25'. I used large stainless hose clamps to keep it on. http://www.designengineering.com/cat...-lr-technology


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Last edited by 44magnum; 06-14-2013 at 09:28 AM.
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post #7 of 18 Old 06-14-2013, 12:15 PM Thread Starter
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Thanks everyone. Boy, Ford could have really made that part cleaner with 3'5" uncrimped DP. The room is there next to the frame. Kinda reminds me of the cheesy Y pipe on my big old 2006 V-10. They necked down the Y to 2-3/8 from 3". Talk about preventing an engine to exhale properly. Amazing how everything else was well designed and built on both trucks.

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post #8 of 18 Old 06-14-2013, 03:37 PM
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Did you start yet?
Im in the midst of cutting the DP but my blade is to short. First time ive used my sawzall, it came with a bi-metal 5" blade...not gonna get er done I dont think.

What are you using?

2008 Job 3, F350, 6.4/drw/lariat/CC/LB, Spartan, Viper 5902, Line-X, Flo-pro egr delete, aFe stage 2 proguard 7, MBRP Cool Duals/downpipe/CAC, CCV mod, coolant filter PMF 7" 4link, Rigid Dually fogs, Royalty Core 3pc, Crown brake lines, Mishimoto Rad
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post #9 of 18 Old 06-14-2013, 03:56 PM Thread Starter
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I purchased a couple of 10 and 12" matel blades. I expectbreak them with the fire wall in that proximity.

Good Luck

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post #10 of 18 Old 06-14-2013, 04:13 PM
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Yeah ok I figured so. Better head to store and get a couple blades!

2008 Job 3, F350, 6.4/drw/lariat/CC/LB, Spartan, Viper 5902, Line-X, Flo-pro egr delete, aFe stage 2 proguard 7, MBRP Cool Duals/downpipe/CAC, CCV mod, coolant filter PMF 7" 4link, Rigid Dually fogs, Royalty Core 3pc, Crown brake lines, Mishimoto Rad
6.4 Rebuild May/2015, BD manifolds+Uppipes, chromoly rods, rockers,lifters, hd springs
Monstir 20", 37x12.50 ATZ P3
1999 Corvette Cpe
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