# Aluminum DP **URL:** \ **Category:** PittSpeed Automotive\ **Created:** [January 14, 2008, 12:48pm UTC](https://forums.speedlife.net/t/aluminum-dp/194784 "2008-01-14T12:48:36Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![bald1one](https://avatars.discourse-cdn.com/v4/letter/b/9de053/32.png) [@bald1one](https://forums.speedlife.net/u/bald1one)\ **Post date:** [January 14, 2008, 12:48pm UTC](https://forums.speedlife.net/t/aluminum-dp/194784/1 "2008-01-14T12:48:36Z")
anyone see any downside to running an aluminum downpipe on a turbo car?? I need a new down pipe and I have a buddy that can make me one out of aluminum for dirt cheap and the fullrace replacement is 365 boners. I know it will be a lot less weight but does anyone see any bad that could come from it? ---
**Author:** ![bgblockelcamino](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/bgblockelcamino/32/5997_2.png) [@bgblockelcamino](https://forums.speedlife.net/u/bgblockelcamino)\ **Post date:** [January 14, 2008, 1:14pm UTC](https://forums.speedlife.net/t/aluminum-dp/194784/2 "2008-01-14T13:14:38Z")
i am considering het same thing too. the DP is usually 11ga aluminum then exhaust is 14ga(from what i have seen). it is extreemely light weight. but usually cost to build in the long run i will prob just make one out of steel or stainless just for simplicity though ---
**Author:** ![SmokinDiesel](https://avatars.discourse-cdn.com/v4/letter/s/57b2e6/32.png) [@SmokinDiesel](https://forums.speedlife.net/u/SmokinDiesel)\ **Post date:** [January 14, 2008, 1:16pm UTC](https://forums.speedlife.net/t/aluminum-dp/194784/3 "2008-01-14T13:16:55Z")
Heat would be the only issue that I see … ---
**Author:** ![bgblockelcamino](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/bgblockelcamino/32/5997_2.png) [@bgblockelcamino](https://forums.speedlife.net/u/bgblockelcamino)\ **Post date:** [January 14, 2008, 1:20pm UTC](https://forums.speedlife.net/t/aluminum-dp/194784/4 "2008-01-14T13:20:04Z")
> [@computer crashing with new 3d card](https://forums.speedlife.net/t/computer-crashing-with-new-3d-card/34346/10): > > Heat would be the only issue that I see … that is what i thought. that is the reason they were making it out of 11ga aluminum handles the heat. you will be surprised how many cars have been using them. pretty popular in imports but have been seeinng a number of domestics too. another thing to keep in mind is the flanges are pricey though. typically have seen them using v bands. ---
**Author:** ![bald1one](https://avatars.discourse-cdn.com/v4/letter/b/9de053/32.png) [@bald1one](https://forums.speedlife.net/u/bald1one)\ **Post date:** [January 14, 2008, 2:34pm UTC](https://forums.speedlife.net/t/aluminum-dp/194784/5 "2008-01-14T14:34:34Z")
i am good friends with Lutz Race Cars and on their twin turboed monte carlo they are using all aluminum 5" aftercooler piping and 5" aluminum down pipes. He was the one that recomended me to use it but he is making 6 second passes. My worry is when i have my car at an autocross event and im holding WOT for 20 minutes straight if its going to handle the heat. I was going to use the 4bolt flange for the turbo side and use a vband for the intermediate side that way i could run open DP at the track. Ill do some research some other places and let you know what i find out. ---
**Author:** ![SmokinDiesel](https://avatars.discourse-cdn.com/v4/letter/s/57b2e6/32.png) [@SmokinDiesel](https://forums.speedlife.net/u/SmokinDiesel)\ **Post date:** [January 14, 2008, 3:29pm UTC](https://forums.speedlife.net/t/aluminum-dp/194784/6 "2008-01-14T15:29:56Z")
> [@UB skiers/boarders...](https://forums.speedlife.net/t/ub-skiers-boarders/34348/2): > > that is what i thought. that is the reason they were making it out of 11ga aluminum handles the heat. you will be surprised how many cars have been using them. pretty popular in imports but have been seeinng a number of domestics too. > > another thing to keep in mind is the flanges are pricey though. typically have seen them using v bands. I understand that 11gauge is going to handle the heat a lot better than a thinner grade … but … Is this just for drag racing/dyno passes … Or can it withstand the heat for longer periods of time? … I guess I never realized that aluminum was that popular … Never knew that many people used them!! … How do the “v” bands hold up? ---
**Author:** ![dyingwish](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/dyingwish/32/6041_2.png) [@dyingwish](https://forums.speedlife.net/u/dyingwish)\ **Post date:** [January 15, 2008, 5:23am UTC](https://forums.speedlife.net/t/aluminum-dp/194784/7 "2008-01-15T05:23:38Z")
I would be worried about cracking from vibration, not heat. You’d need some serious bracing and/or flex sections. I don’t see that lasting very long on a HOnda, high frequency vibrations + extreme heat cycling = aluminum getting brittle. ---
**Author:** ![Hycomp](https://avatars.discourse-cdn.com/v4/letter/h/d6d6ee/32.png) [@Hycomp](https://forums.speedlife.net/u/Hycomp)\ **Post date:** [January 15, 2008, 6:32am UTC](https://forums.speedlife.net/t/aluminum-dp/194784/8 "2008-01-15T06:32:04Z")
> [@New ride, 240hp VTEC makes the hoes flock...](https://forums.speedlife.net/t/new-ride-240hp-vtec-makes-the-hoes-flock/34362/39): > > My worry is when i have my car at an autocross event and im holding WOT for 20 minutes straight if its going to handle the heat. Ummm, unless you plan on driving Daytona you are not going to be WOT for 20 minutes anywhere, especially not at an autocross. ---
**Author:** ![fmfkid250](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fmfkid250/32/5973_2.png) [@fmfkid250](https://forums.speedlife.net/u/fmfkid250)\ **Post date:** [January 15, 2008, 7:05am UTC](https://forums.speedlife.net/t/aluminum-dp/194784/9 "2008-01-15T07:05:05Z")
stainless and be done for life ---
**Author:** ![bgblockelcamino](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/bgblockelcamino/32/5997_2.png) [@bgblockelcamino](https://forums.speedlife.net/u/bgblockelcamino)\ **Post date:** [January 15, 2008, 7:42am UTC](https://forums.speedlife.net/t/aluminum-dp/194784/10 "2008-01-15T07:42:40Z")
> [@FS: 1996 buick lesabre low miles](https://forums.speedlife.net/t/fs-1996-buick-lesabre-low-miles/34364/6): > > stainless and be done for life more than likely that is prob what will happen. ---
**Author:** ![fmfkid250](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fmfkid250/32/5973_2.png) [@fmfkid250](https://forums.speedlife.net/u/fmfkid250)\ **Post date:** [January 15, 2008, 8:53am UTC](https://forums.speedlife.net/t/aluminum-dp/194784/11 "2008-01-15T08:53:08Z")
3.5-4" ftw If you could get it to that size you will be better off! ---
**Author:** ![bald1one](https://avatars.discourse-cdn.com/v4/letter/b/9de053/32.png) [@bald1one](https://forums.speedlife.net/u/bald1one)\ **Post date:** [January 15, 2008, 1:28pm UTC](https://forums.speedlife.net/t/aluminum-dp/194784/12 "2008-01-15T13:28:07Z")
> [@FS: 1996 buick lesabre low miles](https://forums.speedlife.net/t/fs-1996-buick-lesabre-low-miles/34364/5): > > Ummm, unless you plan on driving Daytona you are not going to be WOT for 20 minutes anywhere, especially not at an autocross. Ok sorry WOT 90% of the time, still way more heat than 12 seconds down the track…got it now? ---
**Author:** ![bald1one](https://avatars.discourse-cdn.com/v4/letter/b/9de053/32.png) [@bald1one](https://forums.speedlife.net/u/bald1one)\ **Post date:** [January 15, 2008, 1:29pm UTC](https://forums.speedlife.net/t/aluminum-dp/194784/13 "2008-01-15T13:29:51Z")
ok now we eliminated aluminum for my application…anyone know someone with a mandrel bender capable of bending 3-4" stainless??? ---
**Author:** ![bgblockelcamino](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/bgblockelcamino/32/5997_2.png) [@bgblockelcamino](https://forums.speedlife.net/u/bgblockelcamino)\ **Post date:** [January 15, 2008, 2:20pm UTC](https://forums.speedlife.net/t/aluminum-dp/194784/14 "2008-01-15T14:20:52Z")
i usually stock 3 inch stainless bends here. i am low right now but can order some more ---
**Author:** ![bald1one](https://avatars.discourse-cdn.com/v4/letter/b/9de053/32.png) [@bald1one](https://forums.speedlife.net/u/bald1one)\ **Post date:** [January 16, 2008, 9:28am UTC](https://forums.speedlife.net/t/aluminum-dp/194784/15 "2008-01-16T09:28:23Z")
you interested in fabing one up for me with a 4bolt flange on turbo side and vband on other with a flex pipe in the middle? If so, estimated cost? ---
**Author:** ![bgblockelcamino](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/bgblockelcamino/32/5997_2.png) [@bgblockelcamino](https://forums.speedlife.net/u/bgblockelcamino)\ **Post date:** [January 16, 2008, 11:51am UTC](https://forums.speedlife.net/t/aluminum-dp/194784/16 "2008-01-16T11:51:32Z")
> [@bald1one"](#): > > you interested in fabing one up for me with a 4bolt flange on turbo side and vband on other with a flex pipe in the middle? If so, estimated cost? sure thing let me know when you get closer or ready for DP ---
**Author:** ![bald1one](https://avatars.discourse-cdn.com/v4/letter/b/9de053/32.png) [@bald1one](https://forums.speedlife.net/u/bald1one)\ **Post date:** [January 17, 2008, 9:46am UTC](https://forums.speedlife.net/t/aluminum-dp/194784/17 "2008-01-17T09:46:20Z")
will do ---
**Author:** ![bald1one](https://avatars.discourse-cdn.com/v4/letter/b/9de053/32.png) [@bald1one](https://forums.speedlife.net/u/bald1one)\ **Post date:** [January 17, 2008, 9:46am UTC](https://forums.speedlife.net/t/aluminum-dp/194784/18 "2008-01-17T09:46:37Z")
any idea how much?? ---
**Author:** ![fmfkid250](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fmfkid250/32/5973_2.png) [@fmfkid250](https://forums.speedlife.net/u/fmfkid250)\ **Post date:** [January 17, 2008, 11:04am UTC](https://forums.speedlife.net/t/aluminum-dp/194784/19 "2008-01-17T11:04:24Z")
cheaper then 365 boners ---
**Author:** ![bald1one](https://avatars.discourse-cdn.com/v4/letter/b/9de053/32.png) [@bald1one](https://forums.speedlife.net/u/bald1one)\ **Post date:** [January 17, 2008, 12:21pm UTC](https://forums.speedlife.net/t/aluminum-dp/194784/20 "2008-01-17T12:21:55Z")
> [@New Pics of my STI w/ FMIC on page 4](https://forums.speedlife.net/t/new-pics-of-my-sti-w-fmic-on-page-4/34322/86): > > cheaper then 365 boners 🙂 thanks mayne [Next page](https://forums.speedlife.net/t/aluminum-dp/194784.md?page=2)