Wagner SQ EVO Exhaust Manifold

[Rocco]

As a reference point most I5 ported heads I've come across in the market place will flow around 175-185cfm@28" on stock sized valves. I've seen 190-195cfm@28" peak figures on oversized valves with more area under the curve.

Over sized valves with welded up and reprofiled exhaust ports have yielded 200-204cfm@28" peak figures with again more area under the lift curve.

So assuming that the posted flow figures are at 28" and the transitions are nice from head into the initial runner entry then you will be hard pushed to max out this exhaust mani hence my personal interest.

As for my personal opinion of cast vs tubular (not necessarily correct and open to other opinions of course)
The theoretical advantage of a tubular is that it will offer a more consistent delivery of air throughout a revolution of the engine giving smoother spool up low down and reduced EGT's at the top end due to a reduction in turbulence as the gases meet at the collector. In the same token the cast manifold has a greater ability to retain heat and will offer higher gas speeds again improving spool up, it's downfall being at the very top end of a high hp motor (700+) where too much heat retention can be detrimental to EGT's. So unless going full on top end race motor it's much of a muchness other than that the cast is theoretically much stronger and longer lasting for road use.

great explanation ,so the tubular manifold it is not a bad option for someone with 400/500hp ,the tubular ones dissipate more heat than the cast ones in the engine bay Ok¡¡



Vasilis we dont know if your original sport quattro manifold flow better than the RS2 EVO??

[JP]

As a reference point most I5 ported heads I've come across in the market place will flow around 175-185cfm@28" on stock sized valves. I've seen 190-195cfm@28" peak figures on oversized valves with more area under the curve.

Over sized valves with welded up and reprofiled exhaust ports have yielded 200-204cfm@28" peak figures with again more area under the lift curve.

So assuming that the posted flow figures are at 28" and the transitions are nice from head into the initial runner entry then you will be hard pushed to max out this exhaust mani hence my personal interest.

As for my personal opinion of cast vs tubular (not necessarily correct and open to other opinions of course)
The theoretical advantage of a tubular is that it will offer a more consistent delivery of air throughout a revolution of the engine giving smoother spool up low down and reduced EGT's at the top end due to a reduction in turbulence as the gases meet at the collector. In the same token the cast manifold has a greater ability to retain heat and will offer higher gas speeds again improving spool up, it's downfall being at the very top end of a high hp motor (700+) where too much heat retention can be detrimental to EGT's. So unless going full on top end race motor it's much of a muchness other than that the cast is theoretically much stronger and longer lasting for road use.

[A80Avant]

i have a SQ Em at the moment, which does the job and EGTs are low. Surely the EVO SQ is going to be much better.

[Rocco]

it would be interesting to see a flow comparison of the actual new one with the rs2 evo.(not the casting equivalents)

surelly it is enough (for the moment) for you Vasilis with the RS2 EVO manifold


and if the sport quattro EVO manifold flow better the air....

wich are the advantages of the sport quattro evo one with the WAgner tubular T3 manifold...that it is recomended for track cars...because surelly flow a far better and you have to mod the original downpipe position .... and the tubular one it is far cheaper too

[A80Avant]

it would be interesting to see a flow comparison of the actual new one with the rs2 evo.(not the casting equivalents)

[Jamo]

Will you ever use the one you've got tho?

I use the one I got everytime I drive the car!

[S2 Ant]

OMG how sexy are they?

Definitely on my upgrade list if I change turbo

Will you ever use the one you've got tho?

[Jamo]

does you hane some flow chart on the new EM.. to compare with thee others; some tests?? intr manifoil...

Post 7

[caterpillar]

does you hane some flow chart on the new EM.. to compare with thee others; some tests?? intr manifoil...

[Bram]

Sweeeet! Let's hope they sell like hot cakes, to get your molding investment back in no time

[Lupo911]

and this one flow more and better exhaust airs than the RS2 EVO one??

1:1 plug play as the RS2 EVO?? it seems that this manifold needs to relocate the original downpipe position true??

this is not a Replacement for the RS2 EM, its only a direct Replacement for the OEM Sport Quattro Exhaust Manifold.

[AndersS2]

Great work

[EspenW]

Good info, Carsten.
Looks great

[Rocco]

and this one flow more and better exhaust airs than the RS2 EVO one??

1:1 plug play as the RS2 EVO?? it seems that this manifold needs to relocate the original downpipe position true??

[JP]

Thankyou very much for the info, last question are the figures at 10", 25" or 28"?