my attempt at an o2 housing/ downpipe

[compression]

Well I'm new to the whole custom fab thing. But I needed a place for my wideband so I can get the car up and running , well anyways tell me what you think, what could I do to improve it, the vband turbo outlet is 2.5" I know that's small.

 

[LiquidX]

I'm not one that does welding or fabrication, but in my own opinion, that is a hard angle at the base. I would do more pie cuts and have a smooth transition.

 

[bastarddsm]

That looks good for a first attempt. Really, tho the angles are not that big of a deal. Its actually hard to avoid sharp turns on the dp beacuase of oil filer and alternator in the way. Think about it, do you think that will be anymore restrictive than the turbo is?

 

[turboglenn]

That's pretty good for some one that's new at it, I agree that the angle at the base could stand to be divided into 2 pie cut areas instead of making the bend with just one, after that i think the down pipe would be great. 2.5 may seem to be (or really be) small but for 10 years i've ran a 2.5" DP, (just made my won SS 3" and need to get it on and finished up) But for those 10 years 2.3 has served me well, i've made a past best of 438hp on turbo alone and 503 with a shot of n2o on top of it. And unless you're planning/looking to exceed 500hp, by all the figured and things i've read the 2.5" will do just fine. By your mod list I can see you'll probably be in the 500hp range stil but i don't think you'll be suffering any major losses from 2.5, hell, i'm not even sure i will tell a difference going to 3" this week but i'm hoping it will make a difference in spool if nothing else. But due to the turbo i ended up with i'm gonna now shot for a new total HP goal of 600 - 650 to the wheels (i figure with the lag i have to deal with i might as well make there be something well worth that wait in the end )

On another note, V-bands are the best thing since sliced bread arean't they? I love em! If they weren't so damn expensive about every connection both exhaust and intercooler would all be done in V-band. Although i'm not sure how i feel about mounting the turbo it's self to the manifold via v-band, I think that would make servicing the entire hot side of the engine about 100 times easier than it currently is. Instead of removing my turbo from the manifold when i need to work in that area i pull the whole manifold turbo combo because it's just easier to get to the bolts, V-band would change all that

Also, I like your initiative to piece together your own turbo setup. DO you happen to have a picture of the total finished product?

 

[compression]

I don't have a picture yet, I was supposed to have it tigged. But that didn't happen so I had to MIG it myself my welding is pretty bad as well. I figured I could wrap it up Haha I will post it in a few hours just so you guys can have a laugh! Lol

I'm not one that does welding or fabrication, but in my own opinion, that is a hard angle at the base. I would do more pie cuts and have a smooth transition.

My intentions were to make more pie cuts, but I reilized I would have to weld it myself.. and that just so happened to give me the perfect position on the downpipe part . However I do agree that it looks a little to tight for comfort . I really should just shell out cash for mandrel bent pipes :$

SIGH* here comes.

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In my defense! the helmet im using is about 10 years old and i can barely see out of it while welding ( notice the beads going off into nowhere ) and i had to go over some spots that were leaking =\ terrible i know but it works.

 

[turboglenn]

Who laid those beads? Hellen Keller/? you know i'm kiddin man, just had to say it in public

Like i said in the PM though, you can grind them down and re-do them as many times as you feel like.

personally when it comes to MIG'ing mild exhaust tubing, when i was learnign i came up with a way that looked better than trying to "run a bead" i would turn the welder to setting 2 on my hobart handler 135 and just to "spots" Ill make a million little dots that all connect to each other, they'll lay down really nice and since you're just doing one dot at a time they look consistant and similar to the nice stacked dimes we do when TIG'ing

I love TIG so much i won't MIG hardly anything any more unless the conditions call for it, but hell half the time i'll have argon but no C25 so i'll just bust out the stinger, grab a stick of 6013 and arc weld over MIG'ing just becayse it's simple and fast to do (and like i said, i MIG so seldomely i usually don't have c25 unless i HAD to MIG something and went and filled the bottle)

but hey, form follows function so as long as they work you're good to go, now get some pics of that hybrid turbo up for me to look at

 

[compression]

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[crash89]

Who laid those beads? Hellen Keller/? you know i'm kiddin man, just had to say it in public


personally when it comes to MIG'ing mild exhaust tubing, when i was learnign i came up with a way that looked better than trying to "run a bead" i would turn the welder to setting 2 on my hobart handler 135 and just to "spots" Ill make a million little dots that all connect to each other, they'll lay down really nice and since you're just doing one dot at a time they look consistant and similar to the nice stacked dimes we do when TIG'ing

Thats exactly what I did when I made my whole 3" exhaust. Lay the pieces how I wanted them, mark them, lay a couple tack welds then took it all out and did the bunch of spot welds along wherever I needed welded. Turned out pretty damn good for my first time as well!

 

[compression]

<iframe width="640" height="480" src="http://www.youtube.com/embed/va4LjTL1-ok" frameborder="0" allowfullscreen></iframe>

still rocking it!

 

[Kalub]

Wish I knew someone who could fab me up a DP for my HX35, that would have a split to an e-cutout for a side exit. I have no fab skills.

 

[compression]

what bolt pattern is it?
and the split would be ok if it were left open? for your valve.

 

[TSimage]

There will definitely be restriction due to design but all in all its nice to save some money. More piece cuts are always needed but I'm glad it is working out for you.

Hopefully you wrapped it with header wrap to hide it though ... It's distracting next to that pretty exhaust mani.

 

[compression]

I.... did not

 

[Kalub]

what bolt pattern is it?
and the split would be ok if it were left open? for your valve.

Me? I would be using the stock bolt patterns since I have a BEP Bolt on Housing. But immediately after the O2 Housing I was thinking of putting a Y, with one of the legs having an e-cutout to control whether a side exit was open or not.

I just can't weld it, and I don't trust anyone near where I live to do it.

 

[compression]

ohh, that doesn't sound all that hard.. maybe if i get a wild hair up my ass ill try it out. what size exhaust? i have alot of 2.5 left.

blah , forgot the flex pipe and the fitment issues, if it were just an o2 housing kinda deal i would probably try and fab one up , just for the experience.

 

[Kalub]

2.5" It's be going on a 2G AWD. I have the stock flex section, but everything behind that is 3" mandrel. We should probably take this to PM's as to not clutter this thread. Let me know if you want to give it a shot

 

[compression]

For kalub, i still have some trimming to do, and the hole in the main pipe.

like i said trying to knock out the hardest part first.


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