2g ported vs stock evo manifold

[4geze63]

Would a 2g ported be better then a stock evo exhaust manifold, I think Im going to get the 2g either way because it will only cost me around $50. Im just curious.

Also what kind of hp/tq gains could I expect?, i currectny have 2.5' turboback, 16g etc... on a stock 1g manifold

 

[midnght]

minimal on a stock 2G manifold. It will get you some, but nothing spectacular.

Go with the 2G and get it ported if it only cost you that much. Otherwise I would say go for the EVO and port it.

 

[4geze63]

are the 2g manifolds 6cm stock or 7cm?

 

[midnght]

6cm stock, port match it if you need too. It is very simple to grind out 1cm on the manifold. Mark it with a marker using your 7cm flange as a "drawing circle".

 

[4geze63]

so could u still use a stock 6cm unported 2g manifold on a 16g which would be 7cm?, im not a newb I just allways figured that exhaust outlet had to match the turbo exhaust,

The reason why i ask because the exhaust manifild I may buy says "ported 2g manifold", so if its a ported 2g manifold should I just asume that its 7 cm, or would it still work if it was slightly smaller then 7 cm?

 

[midnght]

so could u still use a stock 6cm unported 2g manifold on a 16g which would be 7cm?, im not a newb I just allways figured that exhaust outlet had to match the turbo exhaust,

The reason why i ask because the exhaust manifild I may buy says "ported 2g manifold", so if its a ported 2g manifold should I just asume that its 7 cm, or would it still work if it was slightly smaller then 7 cm?

Good question, just not for me. Ask the guy you are buying from.

You can just play it safe and get yourself a 7cm gasket anyway. Think about it this way. If you buy a 6cm and the manifold is 6cm than it will flow right into the 7cm housing. If you buy a 7cm and it is 6cm, it still flows into the housing.

BUT.....

If it is 7cm and you buy a 6cm, you now have a lip to dremmel down.


Just get a 7cm gasket and be safe.


Add call or email the person you are buying it from.