Aluminized vs. Stainless Steel Exhaust - Diesel Forum - TheDieselStop.com
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Upgrades and Aftermarket - 6.0L Engine Upgrading or adding OEM or aftermarket equipment to your 2003-Up Super Duty or Excursion with 6.0L Power Stroke diesel engine. Please confine discussion of topics in this forum to those items that are specific to the 6.0L Power Stroke engine.

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Old 02-09-2007, 12:01 PM   #1 (permalink)
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Aluminized vs. Stainless Steel Exhaust

Other than price, is there any performance difference between Aluminized and Stainless exhausts? How about sound? I know that stainless will last longer and look better. What are the pro's and con's of each?
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Old 02-09-2007, 12:11 PM   #2 (permalink)
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Re: Aluminized vs. Stainless Steel Exhaust

they last longer and look better. [img]/ubbthreads/images/graemlins/biggrin.gif[/img]

while that is true, vehicles pretty much are exclusively coming out w/ SS exhaust now. for a large part of the country, it is considered a necessity because of salting the roads for winter. road salt will destroy non-coated or non-resistant steel in short order.

if you don't live in a snow state, i personnally don't think that aluminized would ever be an issue. it would last for quite a long time. but, stainless would give you some piece of mind if you plan to keep your truck forever and don't want to have anything to worry about.

but i can't see why there would be any performance difference whatsoever.
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Old 02-09-2007, 03:21 PM   #3 (permalink)
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Re: Aluminized vs. Stainless Steel Exhaust

Thats right, no differences in performance, only longevity. With MBRP you get one year warranty with stainless, 10 year with T409, and lifetime with T304.
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Old 02-09-2007, 08:40 PM   #4 (permalink)
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Re: Aluminized vs. Stainless Steel Exhaust

The SS will give you better permormance, because it won't have rusty holes in it after a few years, making it sound like sh**.
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Old 02-10-2007, 10:37 AM   #5 (permalink)
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Re: Aluminized vs. Stainless Steel Exhaust

no different in performance just look, Ive always had SS and decided to go with Aluminized and got it jet-coated black to match the color of my truck, I gotta tell you it looks awsome!!!
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Old 02-10-2007, 01:51 PM   #6 (permalink)
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Re: Aluminized vs. Stainless Steel Exhaust

[ QUOTE ]
no different in performance just look, Ive always had SS and decided to go with Aluminized and got it jet-coated black to match the color of my truck, I gotta tell you it looks awsome!!!

[/ QUOTE ]


What was to cost to get it coated??
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Old 02-10-2007, 11:23 PM   #7 (permalink)
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Re: Aluminized vs. Stainless Steel Exhaust

it was pretty expensive but worth it I think, around $300 from the turbo down pipe, to exhuast tip. roughly $15.00 a foot. From what Ive heard it keeps the temp down in the engine compartment and will hold in temps up to 2200 degrees and looks KILLER up a black truck!
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Old 02-12-2007, 12:52 PM   #8 (permalink)
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Re: Aluminized vs. Stainless Steel Exhaust

jqueen,

Thee are minute performance differences between aluminized and 304 stainless, very minute but there. The 304 contains the heat better and because of that it has a slightly higher velocity, nothing you can feel etc. The factories are using 409 since the late 80's because everything north of and including the cat is included in the 100,000 mile federally mandated emmissions warranty. They don't want to give away any exhaust so they make it out of 409 as they know it'll last longer than 100,000 miles. Give us a call , we stock all the MBRP and AFE systems and will be glad to help you.

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Old 02-17-2007, 05:18 PM   #9 (permalink)
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Re: Aluminized vs. Stainless Steel Exhaust

In addition to the comments above:

Aluminized is lighter. This is important for race cars but not diesels.

Stainless has lower thermal conductivity, it retains heat longer. i.e. it cools off slower.
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Old 02-19-2007, 06:20 AM   #10 (permalink)
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Re: Aluminized vs. Stainless Steel Exhaust

I am new to the diesel world, but have just purchased an 07 Lariate CC PSD. would it help if you wrapped the exhaust or would that not be good for a diesel since it may retain heat in the exhaust? Aany info would be much appreciated....thank you
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Old 02-19-2007, 08:41 AM   #11 (permalink)
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Re: Aluminized vs. Stainless Steel Exhaust

welcome to the 'stop!!

thermal wrap will insulate the exhaust system and reduce the heat rejected by heat transfer. this will keep the exhaust hotter. hotter exhaust will flow easier and create less backpressure.

will the reduction in backpressure lead to an increase in performance??? probably not in this case. if you were building a race vehicle it would be a good idea. i don't think it would be worth the time or money.

i have read of some kind of thermal coating/barrier that you install on the manifolds and up pipe that does the exact same thing. supposedly it retains the heat so well that the increase in exhaust flow to the turbo improves drivability. i think the theory is sound, but haven't tried it. besides, it isn't free, so i take all claims that will cost me money w/ a grain of salt. [img]/ubbthreads/images/graemlins/wink.gif[/img]
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'03 F350 Dually, 6.0, Supercab, longbed, 4.10 LS, sport pkg, extremely RED, STRAIGHT PIPED, SCT Xcalibrator, full guages
- Job1 programming, Harpooned, Skweeker Mod, Zoodad Mod
- Did that thing that you're not supposed to talk about

'79 Bronco, 468cid Ford 460 marine motor, C6/NP205

Previous -'99 F250, Rg Cab XLT, 7.3/6spd, 3.73

Project truck
- '96 Cummins, 215hp/5spd, Diprocol guages, Plate & AFC full fwd, hi-capacity external lubrication system
To add: 2 1/2T axles, 46" goodyears, etc.
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