2g exhaust manifold or evo 3 exhaust manifold

[trackfwd]

I'm in the market for a new exhaust manifold,which manifold should I get to replace my cracked 1g manifold, 2g manifold or evo 3 manifold?

 

[jeff24680]

EVO 3 without a doubt. You can find it new for cheaper then the 2g on most sites. Bigger, more flow.

No debate

 

[matthewdesigns]

Evo3 for sure. I picked one up for $80 and it had even been machine ported.

 

[DOHCeclipse]

How much are you looking to spend? If your on a budget I'd say evo3 manifold for sure, but the FP Race manifold seems like a pretty good piece but it is also about $250 IIRC.

 

[toofast82]

If you're still on a 14b, it has a 6cm inlet and the Evo3 manifold has a 7cm outlet.
You would have to either port the inlet of the turbine housing, which will decrease velocity to the turbine.
Purchase a 7cm housing to put on your 14b, which is a good option because it will help topend flow and give you more flow per psi.

You could just use a 2g manifold as it will match right up and can be found dirt cheap used. Then when you go to something requiring a 7cm outlet, you can port the 2g out. They flow very similar to the Evo3 manifold minus the smaller collector.

 

[DSM_PWR]

Forget EVO 3..

I saw a dyno where someone picked up 5hp just from switching to a FP from a ported EVO 3... ona bolt on 3586

 

[mistagst]

follow what toofast82 said it really depends on your turbo and they are both pretty similar. if you have stock turbo i would go with the 2g and just port it out yourself (cheaper)

 

[PieEyedPiper]

Forget EVO 3..

I saw a dyno where someone picked up 5hp just from switching to a FP from a ported EVO 3... ona bolt on 3586

I find those results underwhelming. I'll pay 1/3 the price for 5hp less. 5hp is well within error margins as well. I'd actually call that anecdote evidence against buying the FP - even if it is about as awesome as a cast manifold can be.

No war.. just sayin.

 

[spyder420]

i had the 2g now have the evo its flows and sounds better but i will be giong with the fp

 

[dawid4444]

go with evo 3 exhaust manifold alll the way
trust me

 

[RiGs2G]

I actually sold my stock 2G mani for a ported EVO3! They are cheap, get the EVO3 so when you decide to upgrade, you will already have the better mani!

 

[JEFFREYCASTGSX]

Wow, a EVO3 only has a bigger outlet, i'd get a EVO3 over the 2g anyday. (that was sarcasm)

 

[Jafro]

If you have anything smaller than a big16g, here... you'll need this.

YouTube - How to port and polish a turbo exhaust housing

 

[JusMX141]

An Evo III manifold is a 2G manifold with a 7cm collector instead of a 6cm collector.

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Use the 2G manifold and sealing ring if you have a turbo with a 6cm turbine housing, and the Evo III manifold and sealing ring if you have a turbo with a 7cm housing.

If your turbo has a ported 7cm housing where the sealing ring lip has been removed, you can use either manifold as long as the collector hole has been opened up to the same diameter as the inlet of your turbine housing.

 

[Jafro]

Yes. And in addition, here's what happens when people use the sealing ring when they don't need it or it doesn't fit right.. This was a unported T28 with 6cm housing on an EVO III manifold. Skip to 8m 00s.

YouTube - 2g GSX How-To: Attempting turbo swap with WTF ending

 

[JusMX141]

^ ^

They lucked out. I had a customer send me a 16G that attempted to use the 6cm sealing ring in a 7cm housing. The ring made it to the turbine wheel and reshaped the turbine inducer nicely.

 

[Jafro]

^ ^

They lucked out. I had a customer send me a 16G that attempted to use the 6cm sealing ring in a 7cm housing. The ring made it to the turbine wheel and reshaped the turbine inducer nicely.

I hate those flippin' sealing rings. I always gasket match stuff and keep life simple. The difference between a plugged up 6cm housing and a 7cm ported one for that owner will be night & day. Car was running 16.8's-17.5's. Was sold to him that way & we've spent a year troubleshooting it on-and-off. I can't wait to see what it does.

 

[DSMunknown]

If you have anything smaller than a big16g, here... you'll need this.

YouTube - How to port and polish a turbo exhaust housing

For those of you who don't have an air compressor, just stuff a couple rags in down inside the inlet of the turbine and go from there. Perhaps use a vac to get the rest of the shards out.


I <3 using the sealing ring BTW. No porting in that area for me. No thank you.