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-   -   Manifolds and Downpipes (https://www.miataturbo.net/diy-turbo-discussion-14/manifolds-downpipes-5856/)

cjernigan 11-28-2006 08:23 PM

Manifolds and Downpipes
 
3 Attachment(s)
Even though there is already the "What's your setup" thread. This might work in tandem if people are willing to post photos of their manifolds and downpipes. Or we could just ad photos to the other thread.


Car: '99 with PS and A/C
Motor: 1.8L
Turbo: Garret T25 with square turbine inlet 5 bolt outlet
Manifold: HKS cast without external WG port/flange
Downpipe: Custom fabd with external wastegate flange integrated
WG: External Tial 38mm

(External wastegates are usually run off of the manifold, not after the turbo like my setup. It is not recommended but as shown in my case, it does work.)

SamS 11-28-2006 08:32 PM

2 Attachment(s)
All BEGi for me:

Ceramic coated mani
http://img.photobucket.com/albums/v4...a/DSC00177.jpg

Attachment 217201

and Stainless Downpipe
Attachment 217202

UofACATS 11-28-2006 08:34 PM

Damn I love that downpipe

RusMan 11-28-2006 08:48 PM

1 Attachment(s)
Car: '99 with PS
Motor: 1.8L
Turbo: Garret GT28
Manifold: AVO turbo world log style cast manifold
Downpipe: AVO turbo elbow, 3" SS custom downpipe

Attachment 217200

Splitime 11-28-2006 10:51 PM

Car: '93 no PS or A/C
Motor: 1.6L
Turbo: Garret GT28RS
Manifold: Lovefab custom SS
Intercooler: XSpower used for Vmount.
Downpipe: To be made... vband 3inch.
WG: External Tial 38mm

http://img209.imageshack.us/img209/5648/img0096kx5.jpg

getsidewaysd1 11-28-2006 11:27 PM

Hey, how much was that Lovefab manifold?

MiaTurbo 11-28-2006 11:34 PM

I have manifold envy...

m2cupcar 11-28-2006 11:45 PM

^damn that's purty^ how big is that wg flange/port?

cjernigan- do you think the hks could be redrilled to work with a t3 flange?

Splitime 11-29-2006 12:06 AM


Originally Posted by getsidewaysd1 (Post 60233)
Hey, how much was that Lovefab manifold?

Lol, back on topic guys :p

www.lovefab.com and ask Cody yourself ;)

Its standard t28/gt28rs flange. The WG flange is standard 38mm.

I'll hopefully have mockup pictures soon also, I have aweful vid cam pictures... waiting on friends/girlfriend to send me some real camera pictures I snapped. Was a long sunday work day... rediculous amount of work left... going to be a fun winter :p

retro 11-29-2006 12:13 AM

Shit. I am embarassed to post my DIY job.

retro 11-29-2006 12:53 AM

Ok, here it is. It's a slag encrusted POS compared to the sexy beasts posted above, but I am proud to say:

I taught myself to weld
I made it myself
It's my first project
It's on my car and it works

I do have some clearance issues as it sits really close to the steering shaft and the lower frame brace. Still, it's good enough to use as I get my car tuned, and I can always make another when I am ready to attempt something better.

http://memimage.cardomain.net/member...5_119_full.jpg

Specs:
2000 NB Miata
BEGI Manifold
2.5" Mild Steel
AMG Three bold Flange for T3 Super 60

cjernigan 11-29-2006 12:54 AM

M2cupcar: I don't think the HKS manifold could be redrilled. There just isn't enough material in the walls to drill and port for the T3. An adapter could be made or purchased for it though. The problem with that is the adapters for sale are like 2-3" tall and that would raise your turbo so much you would have clearance problems with the hood. If you want a T3 manifold that is cast, the BEGI is a good product and can be bought with an external WG flange.

cjernigan 11-29-2006 12:55 AM

Retro, not bad work for a first time. What manifold are you running?

retro 11-29-2006 01:00 AM

Edited my post above. I have the BEGI, got it this summer when they had the sale on the new manifolds, and I started acquiring stuff from there.

cjernigan 11-29-2006 01:04 AM

Guess i could have used my brain for a moment and looked at your avatar, thanks for fixing the post.

Braineack 11-29-2006 09:03 AM

http://www.rev2red.com/images/cars/begidone001.JPG

http://www.rev2red.com/images/cars/b...nifold_002.jpg

http://www.rev2red.com/images/cars/b...nifold_003.jpg

http://www.rev2red.com/images/cars/b...nifold_005.jpg

http://www.rev2red.com/images/cars/b...nifold_006.jpg

adbradley 11-29-2006 09:19 AM

retro, looks good to me! I am in the process of building one myself, and im sure it wont look nearly as good as yours. What did you weld that with? Ive been learning on a flux core wire welder

retro 11-30-2006 06:14 PM

I got an el-cheapo unit from Harbor Freight. It's 220 Volt, that can run with Gas or flux-core. I had a real hard time learning with the flux core. Went real easy with the Argon/CO2. It was under $200 for a refurbished unit. Gas was $90 including the tank.

I added a new breaker to my fuse box in the garage with a really long cable. All the welding was done in my garage, and I was even able to wheel the unit out to my car that was on jacks in the driveway tack weld the final fitting. The flex joint went last, after the two ends were complete.

http://memimage.cardomain.net/member...124055_118.jpg

adbradley 11-30-2006 06:36 PM

HAHAHAHAH that is a lot like mine retro! Mine is a bit bigger though. I havent got a tank of argon/co2 yes but need to. Are you using an auto darkening helmet?? you can get one for like 40 bucks shipped on e-bay, well worth it. they have adjustable darknesses, so u can pick what works for you. Helped me a lot.

adbradley 11-30-2006 06:38 PM

i feel like a minority, everyone has these nice t3s and t4s, and i have a crappy old DSM MHI turbo

cjernigan 11-30-2006 06:42 PM

I guarantee my garrett T25 is a bigger POS than your DSM turbo. It's complete garbage. But hey you want to trade? jk

adbradley 11-30-2006 06:56 PM

heheheh, i dont know i have one 13g turbine housing that has enuff cracks in it, that i think if you tapped it with a hammer it would fall apart :) But i wont be using that one.

demetri 11-30-2006 08:26 PM

this is what hks manifolds used to look like;

http://memimage.cardomain.net/member...068_8_full.jpg

this is an early version of my diy downpipe that had a 240 t25;

http://memimage.cardomain.net/member...068_9_full.jpg

now with a gt28rs and revised downpipe;

http://memimage.cardomain.net/member...8_122_full.jpg

sorry, forgot to take some pics before i set it up

cjernigan 12-14-2006 02:29 AM

No one else wants to add to it?

TheBandit 12-14-2006 02:55 AM

I'll try and get some up over the holiday when I fix my WG leak. Until then, you can get an idea from some of these photos. The manifold and downpipe were made by Aurora Motorsports.
Click and Click
-Michael-

timhill78 12-14-2006 04:13 AM

1 Attachment(s)
I'll have everyone know that I have the shittiest looking downpipe. But it works and it's a start.

demetri 12-14-2006 08:22 AM


Originally Posted by timhill78 (Post 64600)
I'll have everyone know that I have the shittiest looking downpipe. But it works and it's a start.

dont listen to the haters. if it works, its beautiful.

i bet you learned alot building it. i know i did.

hustler 01-23-2007 12:03 AM

what kinda stock is everyone using to build the dp's?

cjernigan 01-23-2007 12:15 AM

Everything from 16 gauge mild steel to SS 16 gauge.

If you're looking to DIY some stuff http://store.racing-solutions.org/ that store has tubing and mandrel bends cheap.

y8s 01-23-2007 12:17 AM

my first one was 14 ga aluminized.

my second one is I think 16 ga stainless.

akaryrye 01-23-2007 01:09 AM

wow, cool thread mate. Next time I have a turbo project, im going to do the DIY route. I have so much respect for all of you who had the balls to weld up your own pipes, so do not be ashamed of your work because it deserves much more respect than my BEGi system I, no matter how ugly it may be.

Splitime 01-23-2007 07:51 AM

Agreed, I only decided to have cody make up the manifold because my last build was DIY and I wanted to do this build a bit differently. The rest of the work, vmount radiator/intercooler/intake manifold/downpipe will hopefully all be my work. Getting access to my friends Tig.... and time to learn.

DIY = the best... regardless of looks... if it works of course ;)

m2cupcar 01-23-2007 09:08 AM


Originally Posted by hustler (Post 74251)
what kinda stock is everyone using to build the dp's?

sched 40 right off the internal gate housing, then 16ga aluminized at the down section

cjernigan 01-23-2007 10:34 AM


Originally Posted by m2cupcar (Post 74309)
sched 40 right off the internal gate housing, then 16ga aluminized at the down section

You just happen to have a very interesting downpipe setup, i went through your build page and checked it all out. Cool stuff.

TheBandit 01-23-2007 10:48 AM

I use 16 gauge 304 Stainless for the entire piece.
-Michael-

VRTSid 01-23-2007 11:09 AM

http://jazz.sdsc.edu/photo/pictures/...s_DSCN2176.JPG
made by unknown kid in san diego, I totally forgot to take a pic of my dp before I installed it. :P

cjernigan 01-23-2007 11:12 AM


Originally Posted by VRTSid (Post 74339)
http://jazz.sdsc.edu/photo/pictures/...s_DSCN2176.JPG
made by unknown kid in san diego, I totally forgot to take a pic of my dp before I installed it. :P

Looks like the ETD shorty manifold unless i'm mistaken.

m2cupcar 01-23-2007 01:13 PM

thanks- important note: my second dp section is no longer braced at the trans for fear of it ripping a hole in the 16ga pipe.

VRTSid 01-23-2007 01:30 PM


Originally Posted by cjernigan (Post 74340)
Looks like the ETD shorty manifold unless i'm mistaken.

looks like it to me to, but its a 16g flange and its quite the same angle if they used a jig and different flange

cjernigan 04-19-2007 01:29 AM

Anyone else have some good stuff to add?

RusMan 04-19-2007 03:46 AM

I'll be getting a new manifold and downpipe within the next month or two, I'll update then.


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