setup 1: HKS cast manifold and to4B 60-1 with 0,96A/R turbine housing (undivided)

Setup2: Custom divided ss manifold and to4B 60-1 with 1,00A/R turbine housing (divided).

How much more hp setup 2 would make @15psi in mild ported S5 with all mods needed compared to setup 1.
And how much faster setup 2 would spool compared to setup 1?

Is the divided manifold worth of the extra money?

 

It depends on the divided manifold design...


-Ted

 

Manifold would be something like this..

 

Depends on how much money, you didn't post the prices.

Marques

 

Typically a divided manifold and turbine housing setup will make more power and spool faster. How much in both cases depends on manifold design like Ted stated. Some have claimed (crisspeed) as much as 30 hp or so but I have no first hand experience comparing the two with all else being equal.
Then again someone just made 520 rwhp on pump gas with a cast HKS log style manifold. Probably would have been even more with a divided design.

The manifold you have pictured; is that an "e-bay special" manifold? If so, I have seen one personally and I think it would cost you power and maybe even a turbo once some of the splatter and/or metal debris inside the p.o.s. works it way throught he turbine. Flanges are more crooked than my dick and the thing is bound to crack soon.

I can sauter something together in the dark and have it look better and be stronger than one of those.

General consensus agrees that a good manifold would have runners straight out of the ports for 2"-3" and be equal length with runner lengths of around 14".

Hope that helps

 

First point, don't waste your time with tube turbo exhaust manifolds unless you know what you are doing.
The cast manifold is stronger and more reliable.
Most tube turbo exhaust manifolds will fail due to extreme heat and weight of the turbo.

Second, most tube turbo exhuast manifolds are badly designed.
The pic you supplied has (one) bad wastegate paths - this makes for inefficient WG operation and will cause boost creep if the WG is too small.



-Ted

 

Thanks for the enlightening info. BTW the manifold in the picture is not mine(was going to buy something like that). I think it´s best for me to stick into the HKS cast and go with the ,96A/R turbine housing. I was hoping to get near 400rwhp@15psi but if I´m lucky I should see ~350rwhp@15psi with setup 1..right? but not much more than that..?

BTW I DON´T know what I doing.. That´s why I´m asking these "stupid" questions to learn more about these things. Lucky me I don´t have to built my car alone..

 

Depending on the turbo, those numbers are not unreasonable.


-Ted

 

Uglier is uglier is your avatar...

There's a lot of learning to do about aftermarket turbo setups, keep asking questions and read tons.

 

Hope this avatar pleases you more...