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View Full Version : Anyone running a custom BT downpipe?



EuroSwag
10-23-2011, 08:28 PM
Just trying to avoid spending the $400 on the BT downpipe and making one myself. Does anyone know anyone that has? Trying to gather things to make it. Thanks!

GetBoosted84
10-24-2011, 04:51 AM
I have a 3" DP adapter and a V Band flange (and v-band) for a GT series turbo that you would need to build a BT 3" downpipe (assuming you change your mind about building one [:D]). PM me if you're interested.

Seerlah
10-24-2011, 10:42 AM
Having custom ones made are cheap. My mechanic charges $150 and you supply the parts. I have a custom 2.5" one on there now built by him, and will have a 3" custom one made later on.

EuroSwag
10-24-2011, 05:26 PM
Yeah I'm going custom. My brother works at a welding shop so that's a plus. I think I can use these two things for the flange right off the turbo.

http://www.034motorsport.com/fabrication-exhaust-plumbing-oval-to-round-stainless-tubing-section-for-t25t28gt25gt28gt3071r-wg-p-19124.html

http://www.034motorsport.com/fabrication-flanges-downpipe-and-wastegate-flanges-downpipe-flange-mild-steel-t25t28-and-gt25gt28-oval-p-19123.html

Then just fab up a 3" stainless downpipe.

EuroSwag
10-24-2011, 06:00 PM
Oops, that's a t25/t28 bold pattern flange I would either use this

http://www.034motorsport.com/fabrication-flanges-downpipe-and-wastegate-flanges-downpipe-flange-304-stainless-ford-bolt-p-185.html

Or this

http://www.034motorsport.com/fabrication-flanges-downpipe-and-wastegate-flanges-downpipe-flange-mild-steel-bolt-gt-discharge-p-19119.html

I'll take pictures of how I'm going to make it when the time comes. Which one should I go with? The four or five bolt pattern? Or does it not matter.

GetBoosted84
10-24-2011, 06:08 PM
Let me know if you need either of these two parts for your downpipe. I have a custom DP as well and these were spare parts from my downpipe build (I bought extra in case I wanted to build another).

GT series v-band adapter:
http://i51.tinypic.com/5oav5u.jpg

3" downpipe adapter:
http://i52.tinypic.com/169kx0m.jpg

EuroSwag
10-24-2011, 06:11 PM
I would be interested but isn't that first flange with a V band only for a t25 flanged turbo? On ATP they show that flange with the t25 exhaust housing

GetBoosted84
10-24-2011, 06:15 PM
Oh that's true. I'm sorry, I missed that you were looking for a T3. The second flange is universal but the first is for a T25/T28.

EuroSwag
10-24-2011, 06:29 PM
It's okay, damn it that would've been perfect though [headbang]

Seerlah
10-24-2011, 07:08 PM
I'll take pictures of how I'm going to make it when the time comes. Which one should I go with? The four or five bolt pattern? Or does it not matter.

Yes, it does matter. You need to be sure flanges match each others. For my downoipe, and asked him to simply cut the flange off of the old downpipe that would connect to the cat, and rewelded it onto my new dp as the flange (other end was a slip fit peice with exhaust clamp on my current exhaust). Just an example on how you can save on supply costs.

What exhaust housing do you have on your turbocharger?

And really, no need to buy expensive parts from 034 if they are just fabrication parts. I really do endorse 034 products that they sell (I have a couple), but fabrication peices can be purchased for cheap elsewhere. For example, I simply picked up a 6" long 2.5" flex joint, 2.5" stainless steel u-bend (304 16 gauge), and 2.5" exhaust clamp from ebay (can't recall how much I paid for all that, but it really wasn't much). That was all that was needed for them to make my downpipe.

$teady$upreme
10-24-2011, 07:18 PM
Yes sir. 3" stainless, v-band off turbo and flex joint and 3" all the way back~

EuroSwag
10-24-2011, 09:18 PM
Yeah I know they all have to match, what I meant to say was that I do not have the turbo yet so I'm not sure which flange to get the T3 5 bolt or T3 4 bolt. You said Ebay has good exhaust stuff? I'll have to check it out.

Seerlah
10-24-2011, 09:47 PM
Exhaust parts are really all the same. It only matters when it comes to quality (304 SS) and thickness (16 gauge minimum) of parts such as piping. Flex joints are rather universal, along with flanges and clamps. No need to pay more when you don't need to. And don't pick up the flange you will need until you figure out what exhaust housing you will have. But generally, the t3 comes in the 4 bolt or v-band outlet while the T25 has the 5 bolt because of the wastegate port (T25 usually comes in internal wastegate applications).

EuroSwag
10-24-2011, 10:19 PM
Ahh alright, I'm def. going T3 flange but they have this flange as well as an option on the T3 housing

http://www.034motorsport.com/fabrication-flanges-downpipe-and-wastegate-flanges-downpipe-flange-mild-steel-ford-bolt-p-186.html

M-Hood
10-24-2011, 10:25 PM
Do you plan on running a external WG? If so then you want to go with a 4 bolt flange.

Seerlah
10-24-2011, 10:37 PM
The thing is T3 manifolds generally have an external wastegate port, while the T25 doesn't. The reason being, most T3 applications are external wasgetate while most t25 are internal. And I say generally, because that is the correct term to be used. But the 5 bolt is only used if you were to run an internal wastegate turbine housing (unless doing something like welding the wastegate shut and still using that housing). What turbo you plan on running?

You should be aware of the issues with the SPA manifold:
-it can be a hastle mounting the manifold (the trick is to walk the manifold down the threads of the studs while you tighten the nuts)
-it will be a tricky routing the oil drain line
-it really does not have runners, but a big open space (like a top mount logger, trying to be a tubular manifold)

terryalice
10-25-2011, 01:13 AM
guys tell me about the complete installation of the car as i want and my wish to do it so help me

EuroSwag
10-25-2011, 07:08 AM
I am going EWG, so it looks like 4 bolt it is. I'm going to be running the 2871r. I picked the SPA cause I heard it was made well and hasn't cracked on someone yet (from what i've read). I know the the installation is going to be a PITA haha. But I didn't realize it didn't have runners[confused] it should still be pretty good to use right?

M-Hood
10-25-2011, 09:01 AM
I am going EWG, so it looks like 4 bolt it is. I'm going to be running the 2871r. I picked the SPA cause I heard it was made well and hasn't cracked on someone yet (from what i've read). I know the the installation is going to be a PITA haha. But I didn't realize it didn't have runners[confused] it should still be pretty good to use right?

It has cracked on a few people here on AZ. Its design is like a glove with very short fingers and a huge palm.

Seerlah
10-25-2011, 10:10 AM
I'm going to PM you information on where I picked up my T3 GT2871R .63 A/R 2.5" 4 bolt exhaust outlet, 3" inlet and 2" compressor outlet. I doubt you will find it cheaper.

EuroSwag
10-25-2011, 11:29 AM
It has cracked on a few people here on AZ. Its design is like a glove with very short fingers and a huge palm.

Greattt, lol well it just showed up at my doorstep today so looks like there's no turning back now!

EuroSwag
10-25-2011, 11:35 AM
I mean it can't be that bad right? [:(]

GetBoosted84
10-25-2011, 11:52 AM
I'm going to PM you information on where I picked up my T3 GT2871R .63 A/R 2.5" 4 bolt exhaust outlet, 3" inlet and 2" compressor outlet. I doubt you will find it cheaper.

Oh boo. Not posting on here for me (I mean us) to see? No fair. :-P

flynnr
10-25-2011, 12:14 PM
i HIGHLY recommend going right to a vband. it makes removing the dp / turbo a breeze.

here are a few pics of my custom 3" vbanded DP with external wastegate

http://i263.photobucket.com/albums/ii155/flynnr1/85d27a11.jpg

http://i263.photobucket.com/albums/ii155/flynnr1/e2558c3c.jpg

http://i263.photobucket.com/albums/ii155/flynnr1/abe6f5f6.jpg

http://i263.photobucket.com/albums/ii155/flynnr1/3e61b87f.jpg

http://i263.photobucket.com/albums/ii155/flynnr1/c5eecc0a.jpg

http://i263.photobucket.com/albums/ii155/flynnr1/c790e9c1.jpg

http://i263.photobucket.com/albums/ii155/flynnr1/58ff6ced.jpg

http://i263.photobucket.com/albums/ii155/flynnr1/9c2e4174.jpg

http://i263.photobucket.com/albums/ii155/flynnr1/7f3bfa72.jpg

http://i263.photobucket.com/albums/ii155/flynnr1/37274471.jpg

http://i263.photobucket.com/albums/ii155/flynnr1/4b27ad69.jpg

http://i263.photobucket.com/albums/ii155/flynnr1/a20f4004.jpg

http://i263.photobucket.com/albums/ii155/flynnr1/855368f1.jpg

http://i263.photobucket.com/albums/ii155/flynnr1/8f7e9b2d.jpg

flynnr
10-25-2011, 12:15 PM
welds arent the best, but it has held up great for 20k+ miles

thanks chan!

Seerlah
10-25-2011, 12:21 PM
^You don't have a filter for your turbo? I know those are old pics, so I am asking.


Oh boo. Not posting on here for me (I mean us) to see? No fair. :-P

PM sent. I just did not know if it would be violating AZ rules or not, because they are not paying vendors. If it doesn't, I don't mind posting the link to the website. I post many externals links, but those are for cheap replacement parts (ieautohausaz.com (http://www.autohausaz.com/) ).

flynnr
10-25-2011, 12:29 PM
yeah i have a filter :)

that was used for a day while the filter was being replaced.

EuroSwag
10-25-2011, 01:08 PM
Awesome job on the home made stuff![up]
V band looks tempting [:D]

EuroSwag
10-25-2011, 01:14 PM
Something like this to go off the 4 bolt flange

http://www.ebay.com/itm/2-5-4-bolt-3-v-band-adaptor-turbo-exhaust-downpipe-flange-stainless-t3-gt35-/160669468099?pt=Motors_Car_Truck_Parts_Accessories&vxp=mtr&hash=item2568a585c3#ht_3407wt_1042

Seerlah
10-25-2011, 01:23 PM
Exactly. I have that same peice, but pretty sure I didn't pay $40 for it. What people also do is have it welded onto the exhaust housing. Like a ghetto rigged v-band exhaust housing, but is 100% effecient.

GetBoosted84
10-25-2011, 01:37 PM
Awesome job on the home made stuff![up]
V band looks tempting [:D]

V bands are so worth it in the end. I would highly recommend it. I'm glad I did for sure.

Wet0willy01
10-25-2011, 01:52 PM
http://www.agtronicmotorsport.com/gallery/andrew_1.8t/Andrew%201.8T%20024.jpg
http://www.agtronicmotorsport.com/gallery/andrew_1.8t/Andrew%201.8T%20023.jpg
http://www.agtronicmotorsport.com/gallery/andrew_1.8t/Andrew%201.8T%20025.jpg
http://i1228.photobucket.com/albums/ee458/wet0willy01/2011-02-23_23-01-18_602.jpg

Agtronic Motorsports (http://www.agtronicmotorsport.com/)- Markku is the man!

ThatA4T
10-25-2011, 02:41 PM
dayyyyyum

EuroSwag
10-25-2011, 05:08 PM
Holy...sex.

EuroSwag
10-25-2011, 05:29 PM
I know everyone already knows what it looks like, but here is mine.

http://i1177.photobucket.com/albums/x351/EuroSwaga4/100_05971.jpg

http://i1177.photobucket.com/albums/x351/EuroSwaga4/100_05951.jpg


Not sure what these are. Spacers or something I'm guessing?

http://i1177.photobucket.com/albums/x351/EuroSwaga4/100_06001.jpg

So what do you think? Should I sell it or just keep it.

Shhmaudi
10-25-2011, 06:17 PM
Wetwilly no porn allowed.. Haha J/k awesome pics tho

Crispy222
10-25-2011, 07:42 PM
I know everyone already knows what it looks like, but here is mine.

Not sure what these are. Spacers or something I'm guessing?

So what do you think? Should I sell it or just keep it.

No, keep it. I love mine. Many will say its the best manifold for a daily driven car. I would have it ceramic coated before you install it. Mine has surface rust and oxidation all over it from road salt. I think it does have some coating on their from the factory, but it doesn't hold up to what MN/NY winters will do to it. I built my own downpipe when I went T3 cuz I had the time and welder at work. I'm running an open dump currently. In hindsight, I would buy the $400 downpipe made to fit the manifold and turbo with the routed in wastegate dump.

Not sure what the spacer/washers are for. I'm not running anything like that with mine. I found large flanged copper lock nuts from a local shop that fit all the stud wells.

Crispy222
10-25-2011, 07:51 PM
I started with this outside the car. That's a Garrett 50-trim with a 5-bolt to v-band adaptor. Just eyed up the engine bay and did a few quick measurements when I made the downpipe. The dump tube was an Ebay $10 special. I ended up using the flange from it and bought a 90 and two 45's to make the tube drop before the axle then wrapped it in heat wrap.

http://i63.photobucket.com/albums/h146/Crispy222/Passat%20aka%20Ass%20Wagon/BT%20Project%202010/57695a31.jpg

Tear down
http://i63.photobucket.com/albums/h146/Crispy222/IMG_20110429_230145.jpg

Freshly rebuilt 2L block, same head/manifold/turbo
http://i63.photobucket.com/albums/h146/Crispy222/IMG_20110704_155619.jpg

Wet0willy01
10-25-2011, 08:28 PM
Wetwilly no porn allowed.. Haha J/k awesome pics tho

who me!??

.....Never

http://i1228.photobucket.com/albums/ee458/wet0willy01/photo-55.jpg

A4Rob
10-25-2011, 09:46 PM
I vbanded everything. Turbo, downpipe, midpipe, and even the muffler.

M-Hood
10-26-2011, 06:34 AM
I vbanded everything. Turbo, downpipe, midpipe, and even the muffler.

Just have to make sure to use gaskets because over time V-bands can start to leak.

ZimbutheMonkey
10-26-2011, 07:33 AM
Here's mine, I used a MIG welder, half a U bend, a flex coupler, V band and wastegate flange and some sheet metal for the dump tube transition. Cheaper than the $400 it would have cost me otherwise. Although I'm not gonna lie, it's a lot of pissing around to get it all fitted properly. You can run out of room really fast.

http://i379.photobucket.com/albums/oo238/tlillo1/P8190005.jpg
http://i379.photobucket.com/albums/oo238/tlillo1/P8190006.jpg

flynnr
10-26-2011, 09:31 AM
i would heat wrap that instead of painting it

Crispy222
10-26-2011, 09:37 AM
I vbanded everything. Turbo, downpipe, midpipe, and even the muffler.

I vbanded the my tip off the muffler. LOL

http://i63.photobucket.com/albums/h146/Crispy222/IMG_20110612_114502.jpg

Just make sure you either file or run the flange surface flat on a belt sander to make sure its flat and will seal properly. When you weld them, they will warp.

ZimbutheMonkey
10-26-2011, 10:37 AM
i would heat wrap that instead of painting it

Yeah, I may wrap it down the road. I didn't have any heat wrap at the time and I'm too lazy to pull it out and wrap it since it's going to be sub zero for the next 6 months around here. [down]

EuroSwag
10-26-2011, 11:19 AM
No, keep it. I love mine. Many will say its the best manifold for a daily driven car. I would have it ceramic coated before you install it. Mine has surface rust and oxidation all over it from road salt. I think it does have some coating on their from the factory, but it doesn't hold up to what MN/NY winters will do to it. I built my own downpipe when I went T3 cuz I had the time and welder at work. I'm running an open dump currently. In hindsight, I would buy the $400 downpipe made to fit the manifold and turbo with the routed in wastegate dump.

Not sure what the spacer/washers are for. I'm not running anything like that with mine. I found large flanged copper lock nuts from a local shop that fit all the stud wells.

Alright cool [up] Yeah I'll probably get it coated before it goes in.
But for everyone else you're all V band whores [:D]

Avant Nate
10-26-2011, 03:40 PM
Zimbu, is that mild steel or stainless? That is exactly what I wanted to do. And what size are you running, 3 inch? And what manifold its that for?

EuroSwag
10-26-2011, 07:32 PM
I emailed the company and these are spacers even though I kinda already knew that.

http://i1177.photobucket.com/albums/x351/EuroSwaga4/100_06001.jpg

But why is there only 8? That's enough for the top bolts of the manifold..hmm

Also another question, Do I need to replace the manifold to head studs? Or just the nuts.

Seerlah
10-27-2011, 12:43 PM
SPA should have been courteous enough to send replacement nuts with the manifold. Replace with lockijg nuts vs the OEM washer and nut ones. I also went half and half with someone on that expensive 034 high temp thread lock (got a full Visine thing filled to the top for $20). That and proper locking nuts should assure the nuts don't end up backing off.

EuroSwag
10-27-2011, 05:29 PM
I was just going to say, you'd think they would send at least some new hardware. But thanks for the response.

ZimbutheMonkey
10-28-2011, 12:57 AM
Zimbu, is that mild steel or stainless? That is exactly what I wanted to do. And what size are you running, 3 inch? And what manifold its that for?

Mild steel, 3 inch. As for the manifold, it's for the Zimbu Special http://www.audizine.com/forum/showthread.php/406175-Do-I-smell-a-60-1-build-(pics)/page2