ebay exhaust mani/o2 housing combo and what do i need for it

[rob1621]

So i just ordered my 3'' downpipe and want a exhaust manifold and o2 housing. I found this combo on ebay

Turbo Manifold O2 Housing Dump Outlet Eclipse Talon DSM:eBay Motors (item 250455235373 end time Jul-29-09 15:42:34 PDT)

i dont exhauctly know what it means when it says dump ofr the o2 sensor. So my question is, is there any reason i should not get this? also do all i need to run it is an external wastegate?

 

[Gstclipse69]

That is an internal dump o2 housing meaning its a tubular o2 housing that dumps the gases from the wastegate back into the exhaust. You do not need an external wastegate to run this. The o2 housing would be ok to run I guess. But that manifold will crack guaranteed.

 

[Mr PopUps]

So i just ordered my 3'' downpipe and want a exhaust manifold and o2 housing. I found this combo on ebay

Turbo Manifold O2 Housing Dump Outlet Eclipse Talon DSM:eBay Motors (item 250455235373 end time Jul-29-09 15:42:34 PDT)

i dont exhauctly know what it means when it says dump ofr the o2 sensor. So my question is, is there any reason i should not get this? also do all i need to run it is an external wastegate?

Waste of time and money really. Plus, no O2 bung on the O2 housing.

That is an internal dump o2 housing meaning its a tubular o2 housing that dumps the gases from the wastegate back into the exhaust. You do not need an external wastegate to run this. The o2 housing would be ok to run I guess. But that manifold will crack guaranteed.

Yea, it will crack.

 

[rob1621]

Oh i see so i can just run stock on the o2. But the mani will crack? why? because its ebay? or what?

 

[Mr PopUps]

Oh i see so i can just run stock on the o2. But the mani will crack? why? because its ebay? or what?

Tubular headers lack the 'heft' as it were to handle the weight of the turbo, O2 housing, exhaust and more importantly, the HEAT. Archer Racing had the first one out and it was only $475 way back like 10 years ago, and it ALWAYS cracked. It doesnt matter where you buy it, more than likely, it WILL crack under those extreme conditions.

Now, if you could rig up a bracket or bracing system to take the stress off, it will last longer, but the heat is the biggest killer. Thats why the cast iron 1G mani's crack, well, faster than the cast steel 2G's. Although, ive only see one 2G cracked, and it was damaged by someone who ported it and didnt know what they were doing.

 

[rob1621]

so how is the forced performance manifold? does that crack? also will the exhaust sound louder or deeper with this or both? and what kind of gains should i see? probably small right?

 

[Gstclipse69]

The FP manifold is badass. Absolutely the best cast manifold you can get and its proven to flow just as much as a tubular. The manifold shouldnt affect the sound that much but it will flow much more air than a stocker. The gains you will see will depend on how much air you can push through it. If you have a t2small then you wont see much because you're not flowing enough to be able to see a difference.

 

[MOTOR-RX]

From EBAY to FP that is a huge huge jump...


FP makes some really nice stuff

 

[whiteflash]

An FP mani and an Ebay tubular o2 housing is a pretty good setup, seems to work well for me anyway...

 

[Boost92awd]

Absolutely the best cast manifold you can get and its proven to flow just as much as a tubular.

Got any facts to prove this. I have yet to see and back to back dyno runs to prove that this manifold is so great. Personally I dont think its going to perform much better than a ported 2G or evo 3. I have just yet to see and hard facts that this manifold is so great.

People have made 500hp on a ported 2G manifold. I would say if your hp was around that level I could justify a tubular manifold.

OP just ported your manifold and buy a tubular o2 housing and call it good.

 

[KelTsi90]

I had an ebay manifold before and never gave problems. I know people that weld some kind of support to help with the weight...