Duramax Diesels Forum Truck of the Week
  #1  
Old 03-10-2009, 06:49 PM
Turbo Buick 6's Avatar
Turbo Buick 6 Turbo Buick 6 is offline
...
 
Join Date: Jun 2007
Location: NE Pa
Posts: 3,893
Default Material Selection

Quote:
Originally Posted by DuramaxPowered View Post
3" steel.
Plan on replacing it every so often. It wont hold up to the heat. With only a few thousand miles mine is already showing signs of fatigue. (I knew this when building it, just didn't feel like spending the $ for 321 till this summer) 409 SS is cheap and will last.
__________________
4.5 CLUB
Member #2


06 2500HD LLY reg cab 4wd


Ever feel like lying, down inside a grave
Listen to the elegy, a buyer of the hate
Ever dance beside the devil, taste the barrel of a gauge,
Ever pull the trigger, the light begins to fade
Feel like slipping away
Reply With Quote
  #2  
Old 03-10-2009, 07:21 PM
DuramaxPowered's Avatar
DuramaxPowered DuramaxPowered is offline
Pushing my luck....
 
Join Date: Jan 2008
Location: Monroe, MI
Posts: 791
Default

Quote:
Originally Posted by Turbo Buick 6 View Post
Plan on replacing it every so often. It wont hold up to the heat. With only a few thousand miles mine is already showing signs of fatigue. (I knew this when building it, just didn't feel like spending the $ for 321 till this summer) 409 SS is cheap and will last.
Thanks for the info. Stainless would be easy to use instead at this stage.
__________________
07.5 LMM CC/SB 4wd
Compound Turbos - S475/stock
Exergy 100% over sticks
PPE Dualfuelers
Reply With Quote
  #3  
Old 03-10-2009, 07:34 PM
Turbo Buick 6's Avatar
Turbo Buick 6 Turbo Buick 6 is offline
...
 
Join Date: Jun 2007
Location: NE Pa
Posts: 3,893
Default

Quote:
Originally Posted by DuramaxPowered View Post
Thanks for the info. Stainless would be easy to use instead at this stage.
409 is cheaper than 304 and will last longer. about $40 for a 3" u bend on a 3.38 CLR
__________________
4.5 CLUB
Member #2


06 2500HD LLY reg cab 4wd


Ever feel like lying, down inside a grave
Listen to the elegy, a buyer of the hate
Ever dance beside the devil, taste the barrel of a gauge,
Ever pull the trigger, the light begins to fade
Feel like slipping away
Reply With Quote
  #4  
Old 03-10-2009, 08:02 PM
DuramaxPowered's Avatar
DuramaxPowered DuramaxPowered is offline
Pushing my luck....
 
Join Date: Jan 2008
Location: Monroe, MI
Posts: 791
Default

Quote:
Originally Posted by Turbo Buick 6 View Post
409 is cheaper than 304 and will last longer. about $40 for a 3" u bend on a 3.38 CLR
Got a link to any suggested retailer
__________________
07.5 LMM CC/SB 4wd
Compound Turbos - S475/stock
Exergy 100% over sticks
PPE Dualfuelers
Reply With Quote
  #5  
Old 03-10-2009, 08:04 PM
Turbo Buick 6's Avatar
Turbo Buick 6 Turbo Buick 6 is offline
...
 
Join Date: Jun 2007
Location: NE Pa
Posts: 3,893
Default

Quote:
Originally Posted by DuramaxPowered View Post
Got a link to any suggested retailer
http://www.mandrelbendingsolutions.c...-Degree/Detail
__________________
4.5 CLUB
Member #2


06 2500HD LLY reg cab 4wd


Ever feel like lying, down inside a grave
Listen to the elegy, a buyer of the hate
Ever dance beside the devil, taste the barrel of a gauge,
Ever pull the trigger, the light begins to fade
Feel like slipping away
Reply With Quote
  #6  
Old 03-10-2009, 08:06 PM
Turbo Buick 6's Avatar
Turbo Buick 6 Turbo Buick 6 is offline
...
 
Join Date: Jun 2007
Location: NE Pa
Posts: 3,893
Default

http://www.duramaxdiesels.com/forum/...ead.php?t=9885

http://www.duramaxdiesels.com/forum/...ead.php?t=9883

Check these out too.
__________________
4.5 CLUB
Member #2


06 2500HD LLY reg cab 4wd


Ever feel like lying, down inside a grave
Listen to the elegy, a buyer of the hate
Ever dance beside the devil, taste the barrel of a gauge,
Ever pull the trigger, the light begins to fade
Feel like slipping away
Reply With Quote
  #7  
Old 03-10-2009, 10:50 PM
dmaxvaz's Avatar
dmaxvaz dmaxvaz is offline
wannabe puller
 
Join Date: Nov 2006
Location: METRO DETROIT
Posts: 1,132
Default

Quote:
Originally Posted by turbo buick 6 View Post
plan on replacing it every so often. It wont hold up to the heat. With only a few thousand miles mine is already showing signs of fatigue. (i knew this when building it, just didn't feel like spending the $ for 321 till this summer) 409 ss is cheap and will last.
the 3" pipe will be coated with 2000*f thermal barrier ceramic coating, so i dont think it will be a problem
__________________
01 chevy 2500hd rclb, all work and no play! boss v plow, 65 hp predator tune, afe intake, dimondeye 4" exh., 285s, stock everything.
02 chevy 2500hd ccsb, rancho 9000s. suncoast IV w/1057, EFI LIVE dsp5, AD150. LBZ CP3. Kriptonite centerlink/tierods. 305/55r20s Toyo a/t. Billet wheel s366/74 by Northwest Diesel Service and Performance. BD Blowoff valve. New best 1/4 mile time: 12.59 @106.62. Toman Tuning Inside.
Reply With Quote
  #8  
Old 03-10-2009, 10:56 PM
Turbo Buick 6's Avatar
Turbo Buick 6 Turbo Buick 6 is offline
...
 
Join Date: Jun 2007
Location: NE Pa
Posts: 3,893
Default

Quote:
Originally Posted by dmaxvaz View Post
the 3" pipe will be coated with 2000*f thermal barrier ceramic coating, so i dont think it will be a problem
Still won't last....if you wish to try and prove me wrong try it......since I've never thought of that

Everything aside its a bad idea to coat the inside of and pre turbo exhaust component since eventually the coating will flake off and go through the turbo. If you only coat the outside the steal still sees the same heat....actually more. Call up SPD and ask them if they will warranty a set of headers you had coated.
__________________
4.5 CLUB
Member #2


06 2500HD LLY reg cab 4wd


Ever feel like lying, down inside a grave
Listen to the elegy, a buyer of the hate
Ever dance beside the devil, taste the barrel of a gauge,
Ever pull the trigger, the light begins to fade
Feel like slipping away

Last edited by Turbo Buick 6; 03-10-2009 at 11:01 PM.
Reply With Quote
  #9  
Old 03-10-2009, 11:14 PM
dmaxvaz's Avatar
dmaxvaz dmaxvaz is offline
wannabe puller
 
Join Date: Nov 2006
Location: METRO DETROIT
Posts: 1,132
Default

Quote:
Originally Posted by turbo buick 6 View Post
still won't last....if you wish to try and prove me wrong try it......since i've never thought of that

Everything aside its a bad idea to coat the inside of and pre turbo exhaust component since eventually the coating will flake off and go through the turbo. If you only coat the outside the steal still sees the same heat....actually more. Call up spd and ask them if they will warranty a set of headers you had coated.
i built the twins on my truck like 8 months ago, and i have put 10k miles on it. I used aluminized mild steel, that i welded myself and painted them with some 1600*f thermotec stuff out of a spray can, and then wrapped it with header wrap. Its doing just fine, and it is not fatiguing or getting blown out. The hotpipe on my truck does not get really all that hot to worry about it like up-pipes would get hot.ON ANOTHER NOTE- MY BUDDY WITH A CUMMINS 12VALVE, HAS A SET OF TWINS(TOO SMALL FOR THE AMT OF FUEL IT PUTS OUT) THAT WERE FABBED ALSO WITH A MILD STEEL HOTPIPE THAT SEES VERY HOT TEMPS LIKE 1800* BY THE 1/8 MILE AT THE DRAG STRIP, AND THAT SETUP HAS OVER 60K MILES ON IT BEING DAILY DRIVEN
__________________
01 chevy 2500hd rclb, all work and no play! boss v plow, 65 hp predator tune, afe intake, dimondeye 4" exh., 285s, stock everything.
02 chevy 2500hd ccsb, rancho 9000s. suncoast IV w/1057, EFI LIVE dsp5, AD150. LBZ CP3. Kriptonite centerlink/tierods. 305/55r20s Toyo a/t. Billet wheel s366/74 by Northwest Diesel Service and Performance. BD Blowoff valve. New best 1/4 mile time: 12.59 @106.62. Toman Tuning Inside.

Last edited by dmaxvaz; 03-10-2009 at 11:20 PM.
Reply With Quote
  #10  
Old 03-10-2009, 11:20 PM
Turbo Buick 6's Avatar
Turbo Buick 6 Turbo Buick 6 is offline
...
 
Join Date: Jun 2007
Location: NE Pa
Posts: 3,893
Default

Quote:
Originally Posted by dmaxvaz View Post
i built the twins on my truck like 8 months ago, and i have put 10k miles on it. I used aluminized mild steel, that i welded myself and painted them with some 1600*f thermotec stuff out of a spray can, and then wrapped it with header wrap. Its doing just fine, and it is not fatiguing or getting blown out. The hotpipe on my truck does not get really all that hot to worry about it like up-pipes would get hot.
A105 which is regular 70,000 psi steel is not made for over 800F. My guess is you will get about 30,000 miles out of it. How do you know its not fatiguing? Did you cut a section out and send it out for analisis? I did

That pipe gets just as hot as up-pipes.....why would you think it would be any cooler?
__________________
4.5 CLUB
Member #2


06 2500HD LLY reg cab 4wd


Ever feel like lying, down inside a grave
Listen to the elegy, a buyer of the hate
Ever dance beside the devil, taste the barrel of a gauge,
Ever pull the trigger, the light begins to fade
Feel like slipping away
Reply With Quote
  #11  
Old 03-11-2009, 07:30 AM
dmaxfireman's Avatar
dmaxfireman dmaxfireman is offline
'Can do' kind of guy
 
Join Date: Apr 2007
Location: CT
Posts: 2,458

Default

trust paul on metal and welding he really knows his stuff
__________________
-Fireman
Reply With Quote
  #12  
Old 03-11-2009, 08:48 AM
duratothemax's Avatar
duratothemax duratothemax is offline
<--- slippery roads
 
Join Date: Aug 2006
Location: Wyoming
Posts: 7,836
Default

as far as I know Nathan used non stainless steel on at least his early twins. Mine are over 4 years old and I have no idea how many thousands of miles. Zero problems........
__________________

2012 Denali - R&D testbed for upcoming new products.....
2005 Silverado LT - Blown up/broken too many engines and parts to care about making it fast anymore, so its back to mostly stock - The best names in the industry for parts/advice/help...MikeL.Guy-SoCal.Rob-ATP.Evan-Limitless.McRat.BigDipper.Bobo.Tony-RRDP.Fingers.Eric-MA.EFILive...


BT DieselWorks, LLC - EFILive tuning - Duramax/Allison/gasser STANDALONE HARNESSES - Allison lockup controllers - Allison tapshift kits - Digital DSP-5 switches - full assortment of great electronic improvements and gadgets for your GM truck/SUV

All products available for sale through our online store at www.btdieselworks.com

Be sure to "like" us on Facebook at www.facebook.com/BTDWorks
Be sure to "follow" us on Instagram @btdieselworks
Reply With Quote
  #13  
Old 03-11-2009, 09:01 AM
RENODMAX's Avatar
RENODMAX RENODMAX is offline
Dead Wrong
 
Join Date: Mar 2008
Posts: 3,601

Default

Paul how come in Acoombs' thread did you say his steel would be fine, and now in this one you say it wont
__________________
2014 Silvy 1500 CCSB- mostly stock fishing rig
2004 LB7 CCSB
Built trans, tuning, fabbed stuff by me- SOLD
Reply With Quote
  #14  
Old 03-11-2009, 09:15 AM
Bako_Dmax's Avatar
Bako_Dmax Bako_Dmax is offline
GTO Slayer
 
Join Date: Apr 2008
Location: Bako
Posts: 750
Default

I think he was just sayin mine wouldnt rust. They will fatigue over time from heat however. If I get 30,000 miles out of them I will be very happy.
__________________
2006 Chevy LBZ
MBRP exhaust, Shimmed FPRV, Blocked EGR
Homemade Lift Pump W/ Bypass
Homemade Pitman & Idler Braces
Tierod Sleeves
EFI Live
Built trans w/ triple disc

Homemade Twins S475 w/ 38mm gate
Reply With Quote
  #15  
Old 03-11-2009, 09:40 AM
DuramaxPowered's Avatar
DuramaxPowered DuramaxPowered is offline
Pushing my luck....
 
Join Date: Jan 2008
Location: Monroe, MI
Posts: 791
Default

I'm really not trying to start a mild vs stainless debate here. The way I see it, for now I'll use the mild since I have it and switch to stainless down the road. Turbo Buick 6 knows alot, has done more of this type of fabrication than I'll do in my lifetime, and I'm sure he's suggesting stainless just to help out and I appreciate the criticizm. As far as the rest of the build goes, I'm waiting on a few parts that should be here by the end of the week, and I'm really hoping to be done by my birthday March 20th .......
__________________
07.5 LMM CC/SB 4wd
Compound Turbos - S475/stock
Exergy 100% over sticks
PPE Dualfuelers
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


All times are GMT -7. The time now is 04:14 PM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
vB.Sponsors