Wagner Exhaust Manifold v RS2 Manifold

[epic]

Ok so what would be the approx diference in BHP between a 3071 / KKK/ RS2 manifold and a 3071 / T3 / T3 Wagner manifold

Well no as your at the bhp limit of the RS2 manifold with a 3071r therefore it is a restriction.

It is a better manifold period but the true gain with it is using the T3 flange with a Garrett turbo

[A80Avant]

i dont really get it why people say that the RS2 wont give more than 450hp. Nervas made 500 with the S2 manifold...

previously people made more than 450 with the KKK 26/27/29

[4WheelDrifter]

Could it be a different trim turbine tho?

Could be because some GT3071Rs come with a 56.5mm turbine, internal WG maybe? I not 100% sure though, it's too small anyway.

[Jamo]

i dont really get it why people say that the RS2 wont give more than 450hp. Nervas made 500 with the S2 manifold...

previously people made more than 450 with the KKK 26/27/29

Who said it won't make more, as I explained umpteem times you can push anything beyond it's limits but back pressure and EGT's are at high levels with an RS2 manifold at those figures which makes for burnt valves

[Billman]

I believe that the RS2 manifold isnt a restriction with a GT3071 .63 AR because simply the GT3071 cant make more than the manifold can support.

Appart from this and for tech reasons i believe that the only restriction beyond 450 hp on the RS2 manifold is this K26 flange and nothing more.

So, since the GT3071 with K26 or T3 flange has as 0.63AR this tiny neck and turbine impeller then you would make no more than 10hp with the wagner mani.

This applies only for the GT3071. Everything bigger would for sure benefit from the bigger runners and flange on a Wagner T3 mani.