sturovo

Curly what should I call this........Is it ugly enough to be a Bobbitt horn?





Leafy, I will use 5/4 inch for the runners, joined 6/4 for the merge and 7/4 for the collector, so hopefully flow wont choke. (Even with a td05)

Good point hochkis. I guess I could brace the turbo from outlet flange back to the manifold?

baron340

iTrader: (5)

Turbo not hit frame rail? Why not do a low-mount? I had to do more customizing to the turbo housings than I would've liked, but I got it to work.

sturovo

Some progress over the w/e...
Made the merge (go easy on me, its the first one I tried!)

And tack welded it together


Jonathan, the frame clearance is about 2". (It could be made bigger if needs be.) Why this position? Turbo piping is straight forward (straight pipe to intercooler under light route), clears power steering, does not clash with coolant return hose, turbos fit with out clocking or wastegate relocation.

sturovo

Stick welded
Next downpipe elbow

Fireindc

iTrader: (13)

Looks pretty good, mucho better than your last config. However, i'd agree that the turbo will be a "lever" on the manifold and add extra stress. Perhaps you should add some bracing?

Should have made it unequal length for more scoobie rumble

sturovo

I agree, scoobie rumble sounds glorius. I don't know if it would suit my anemic mx5.



Just curious, has anyone used reversible manifold flanges? Theoretically the same manifold could be used for fwd/rear or low/high turbo placement?

sturovo

Almost finished the downpipe (70x1.5 304) but ran out of electrodes

opened up the input, hopefully giving better wastegate flow.

I am curious how this will flow

4sfed5

i'm running a subaru/IHI VF10 turbo on my 1600. its a great turbo. good response and holds boost to redline. the best bit is the suby turbos are dirt cheap compared to the nissan/garret ones.

http://www.cardomain.com/ride/264041...a-mx-5/page-6/

sturovo

Continuing in the tradition of answering questions that no one is asking I hacked together a reversible manifold suitable for both subaru and t2 flanges. (Mild flanges / stainless elbows.)
Minimal effort involved as the long radius bends line up well and stick welding is hyper fast.

baron340

iTrader: (5)

I am continually amazed at your skill with a stick welder.

Hot_Wheels

iTrader: (12)

What kind of stick welder? How do you get it so clean with out splatter???? Please make a how to. Stick welders are cheap, if i can get welds like that i would consider getting one.

sturovo

I concur 4sfed5. My take on turbo sizing is to use the smallest one that reaches your power goals.

Thanks Jonathan. I learned by watching this video


Rick, I have a basic 100$ inverter. I am no expert but what I have found out so far is that usually spatter is either caused by too much current or drawing too long of an ark.
Controlling slag is the difficult thing with arc welding. I use lighter shade glass as it makes seeing the metal/slag boundary easier. Using gravity is also a big help as is selecting the correct electrodes. There are characteristic sounds for good and bad weld formation.
The stainless steel I used in the manifold is 2mm thick. This is ideal for welding electrode +ve with 1.6mm rods as you can get full penetration on a continuous pass and not get much spatter. I use a chipping hammer and coarse wire wheel to clean the welds. (That's why they look clean ) Safety glasses are a must with stainless electrodes as the slag explodes off the weld when cooling.

Hkmx5

This manifold fit for greddy td04H 15G??

sturovo

I guess yes if it has a rectangular t2 flange.
http://www.jgstools.com/turbo/tk010p.jpg

curly

iTrader: (25)

I always see those videos and think, "yeah, yeah, I can weld. I can do this!"

Then I rage quit.

sturovo

Fabbed a new t25 downpipe elbow from 70mm x 1.5 mm stainless tube and 5mm mild flanges. (The old one was suitable for a horizontally mounted turbo.)

I tried some different electrodes (309 vs 308) which lay smoother beads?

Jae_Rex

Great skills. You should perfect the measurements and offer a manifold to those choosing this route.

sturovo

Thanks Jae-Rex for the vote of confidence! If I was thinking about trying a variation of this manifold next....
AutoSpeed - Making Turbo Manifolds, Part 2

sturovo

Variation s4.
Both t2 and subaru turbos can be high or low mounted with this manifold.

Leafy

iTrader: (1)

With the low mount version, are you able to actually put something off the end of the compressor inlet?