o2 housings and eliminators

[GeneralChaos]

Ive searched and read the section on it in the faq but it still doesnt really give a specific answer....it always just talks about how loud an external gate is and how people want sound clips...

So anyway, Im going to need an exhaust eventually here, and I like to plan ahead so I only have to buy something once.

Im looking at turbo back exhausts for places like RNR, but im not sure what the deal with the o2 eliminators are. Do they use internal wastegate turbos still? are they able to use an external gate?

Im kind of confused on this, but I want something that can handle a 50+ trim turbo in the future, but still be able to work on something like my T-25 or a e16g (Might get one if I find it for cheap to hold me over)

I know theres different o2 housings, ones with internal or external gates, some vent to atmosphere some go to the downpipe.

So if someone can give a clear setup option for this im sure it would help more then just me out, im just getting so confused from no pictures, bigger turbos not having wastegates on them already, etc.

 

[boostedinaz]

Ive searched and read the section on it in the faq but it still doesnt really give a specific answer....it always just talks about how loud an external gate is and how people want sound clips...

So anyway, Im going to need an exhaust eventually here, and I like to plan ahead so I only have to buy something once.

Im looking at turbo back exhausts for places like RNR, but im not sure what the deal with the o2 eliminators are. Do they use internal wastegate turbos still? are they able to use an external gate?

Im kind of confused on this, but I want something that can handle a 50+ trim turbo in the future, but still be able to work on something like my T-25 or a e16g (Might get one if I find it for cheap to hold me over)

I know theres different o2 housings, ones with internal or external gates, some vent to atmosphere some go to the downpipe.

So if someone can give a clear setup option for this im sure it would help more then just me out, im just getting so confused from no pictures, bigger turbos not having wastegates on them already, etc.

There are a ton of threads on this. an O2 elim is just a tubualr O2 housing instead of cast one. They can be internal or external dump and can also use an internal or external gate.

http://www.dsmtuners.com/forums/showthread.php?t=163288&highlight=elim

http://www.dsmtuners.com/forums/showthread.php?t=165467&highlight=elim

http://www.dsmtuners.com/forums/showthread.php?t=148615&highlight=elim

 

[GeneralChaos]

I think im making this more complicated then it is, but im not feeling to smart today

Anyways there was a few good bits in those threads, for some reason my searching doesnt bring up such things.....


So what ive gathered is if I want it to be 50+ trim compatible I will need an external wastegate setup.

Ive known im not actually eliminating the o2 housing and crap and I want it internally dumped for noise/annoyance reasons, so id choose that option.

Now I need to mount this external wastegate and I assume thats going to need a new manifold? but how is this all mounted and fed to the internal dump?

this has to sound retarted because I sure feel like one, but I have almost no pictures to reference off of here. the only thing I can see is http://www.victoryperformance.com/product/blowup.cfm?picture=display_allW.jpg&ProductID=505 and these look like new o2 housings and not "eliminators". or will the wastegate bolt onto my "eliminator"

And if I have a external wastegate setup does it matter if there is a internal wastegate on the turbo?

hope im getting somewhere here boosted, set me in the right direction even though it sounds like your getting fed up with all us noobs on this topic

 

[DSM90AWD]

I've got an internally gated 50-trim.. properly setup you don't really need an external unless you are boosting > 22psi (mine holds fine at that level BTW).

There are two types of External wategate setups: Manifold mounted and O2 mounted.

The Victory Perfomance versions are O2 mounted and you can have it dump to ATM or back into the housing itself. The manifold mounts can be as simple as welding a WG flange to your existing Exh manifold and then fabbing up a dump tube using 1.5" pipe. Again you could just as easily re-route this to your exhaust with a little creativity.

FYI.. "O2 Eliminator" is a term used generically to indicate it replaces yout existing O2 housing and has a provision for the O2 sensor.

 

[GeneralChaos]

so if I mount the WG on the manifold I have to make a pipe and weld it from the WG and weld it into a hole I make in the "o2 eliminator"?

best picture I can find of one is RNR's http://www.rnrracing.com/ccp5/media/images/product_detail/1gawdTBE3.jpg and to me it appears on the left side a wastegate is connected to the o2 part, unless thats something else.

im gonna go search around the gallery and things for how this is actually setup so I can figre out what I need to buy.



P.S. Yea I know, the name is the worst one ever created.

 

[DSM90AWD]

Check http://www.roadraceengineering.com/tial.htm

If you have an external mounted to your manifold you really don't need an aftermarket O2 housing (ported 2G would be fine). You could then route your dump to your aftermarket downpipe using a short piece of 1.5" pipe ("T" in the DP) and some flexible SS tubing.

The options are limitless.. just have to get the major parts and see where you want them to go.

 

[boostedinaz]

best picture I can find of one is RNR's

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^^^
This is one of the better ways to do it.

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Here is an other great way to do it. This si taken from the center of the manifold were all four runners meet.

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This is the worst way to do it. If you look at the pictures you can see that all the gases from the other three cylinders has to go back up the manifold before they are let out. That is called reversion and isnt that good. I would try and stay away from that.


All of those can be routed for an external or internal dump. It is just up to you and the exhaust shop.

 

[GeneralChaos]

so the RNR exhaust setup is a good way to do it? It doesnt make much sense to me, I hope itd be as easy as buying it, putting a tial on there and another pipe or whatever and calling it a day. but it seems if it was down there part of the exhaust would be going to the WG and the rest would just go through the downpipe and it seems like youd get a huge amount of turbulence and it wouldnt do anything.

The middle picture looks like a nice setup too but it seems like I might have to buy a new mani with every turbo upgrade, which I dont want to do.

And I was thinking the same thing about the last one.

 

[slow4G63]

this post got my attention quick!! I'm lost on how wastegate's really work... here's a good guide that explains throughly how wastegate's work... http://www.turbosaturns.net/articles/wastegate101.htm ... this may not solve your question, but just an FYI that I found!

 

[boostedinaz]

so the RNR exhaust setup is a good way to do it? It doesnt make much sense to me, I hope itd be as easy as buying it, putting a tial on there and another pipe or whatever and calling it a day. but it seems if it was down there part of the exhaust would be going to the WG and the rest would just go through the downpipe and it seems like youd get a huge amount of turbulence and it wouldnt do anything.

You can just get an O2 elim with an internal dump and then have a WG put on the dump tube. It wouldnt be any more turbulant then and stock type setup, but if you did go an other route there could be some advantages. If you decide to have the WG tube routed differently I would have it dump back in right before the flex section in the exhaust. This will help with scavaging. Basically the faster moving WG exhaust will help pull the main exhaust through. Very basic explanation but you get the idea. Going external isnt that as easy as many think. Good luck.

 

[GeneralChaos]

tell me if this crude diagram is correct on how attaching it right to the downpipe would work.

 

[boostedinaz]

tell me if this crude diagram is correct on how attaching it right to the downpipe would work.

You got it.