Arca's Time Attack Build Thread (13b-REW Swap)
02-25-2015, 08:04 PM
#326
I'm in the process of doing it. Doing a high-compression NA LS1 on E85, running a T56 (original, huh?). I'll definitely run at least a roll bar and a nice FIA approved seat with side restraints like yours. I loved what you did with your moon roof, I'm definitely copying that!
03-20-2015, 05:57 PM
#328
I'm using FD front cover and not using a water pump housing since I will be using an electric water pump.
The manifold will clear the water pump housing just fine, you will have to modify it though which is the case with just about any big turbo setup. It is mentioned in the description here.
Turblown REW Swapped Rx-8 Turbo Manifold
The manifold will clear the water pump housing just fine, you will have to modify it though which is the case with just about any big turbo setup. It is mentioned in the description here.
Turblown REW Swapped Rx-8 Turbo Manifold
03-20-2015, 11:57 PM
#331
Not likely since he's at least semi-sponsored by TB and also using a turbo not listed in the application description plus any other options.
All in all for a quality manifold it's not that bad for someome who doesn't have the equipment and/or skill to make their own. It probably is marked up 2 - 3x minimum though, but no different than buying booze at a restaurant vs going to the liquor store ...
.
All in all for a quality manifold it's not that bad for someome who doesn't have the equipment and/or skill to make their own. It probably is marked up 2 - 3x minimum though, but no different than buying booze at a restaurant vs going to the liquor store ...
.
Last edited by TeamRX8; 03-21-2015 at 12:29 AM.
03-21-2015, 12:13 AM
#332
Yeah marked up 270% +/- . If you take in account labor.., your still at least a 200% mark up witch is outrageous. And that's not including any egt bungs or other accessories. Add more $$$ for the nice little extras which are necessary.
Last edited by Schartz; 03-21-2015 at 12:16 AM.
03-21-2015, 12:51 AM
#333
It's funny that the price of turbo manifolds always comes up on RX-8 club. Look at forums for say Supras, Skylines, RX-7's, Evo's, Subarus, and you'll see that it's not outrageous in the world of aftermarket tubular manifolds. Hell even the high end Honda ones are above the $1k mark.
Turbo Manifolds - Full-Race.com
Products | DOCRace
ToxicFab - Exhaust Manifolds & O2 Housings
JDL Turbo Manifolds | Product Categories |
Turbo Manifolds - Full-Race.com
Products | DOCRace
ToxicFab - Exhaust Manifolds & O2 Housings
JDL Turbo Manifolds | Product Categories |
03-21-2015, 08:36 AM
#335
True you can make you own at nearly the same quality for alot cheaper, however aren't the runners supposed to be a certain length to reflect pressure waves or something like that? Thinking about it I wonder if the turblown manifold was made with that consideration in mind or if fitment was the only concern.
03-21-2015, 01:38 PM
#336
There are as many header theories as there are different types of womens shoes
In the rotary world...especially those in turbo applications...it doesn't appear to be as big an issue as the piston applications
Some of the super high drag engines use a log manifold...so some theory seems to be thrown out the window
Nothing suggests that the flow dynamics of the available units have been simulated past where personal experience and fitment has placed them
In the rotary world...especially those in turbo applications...it doesn't appear to be as big an issue as the piston applications
Some of the super high drag engines use a log manifold...so some theory seems to be thrown out the window
Nothing suggests that the flow dynamics of the available units have been simulated past where personal experience and fitment has placed them
03-21-2015, 04:12 PM
#338
With a true twin scroll set up, the runner length of one rotor vs. the other doesn't seem to have any effect since the pulses are not allowed to interfere with each other. The reason why equal length is important on piston engine twin scroll set ups is because more than one cylinder is feeding each "scroll" of the turbo.
03-21-2015, 09:12 PM
#339
I didn't really intend to argue at the point of equal length runners, but more at at resonant tuning. For those who don't know, its timing the acoustic pressure waves to be in sync with the combustion process so that when they reflect in the exhaust tubes they help pull out exhaust from the working chamber. This effect is obtained by making the exhaust runners a certain length. Im not very versed in this stuff, but I am willing to bet that the bigger brand names charge a butt ton more for their manifolds because they invest in R&D. I don't know for certain, but to me that seems the most likely for the price markup.
I do agree its far more important in N/A applications than FI.
I do agree its far more important in N/A applications than FI.
03-22-2015, 03:22 AM
#341
I didn't really intend to argue at the point of equal length runners, but more at at resonant tuning. For those who don't know, its timing the acoustic pressure waves to be in sync with the combustion process so that when they reflect in the exhaust tubes they help pull out exhaust from the working chamber. This effect is obtained by making the exhaust runners a certain length. Im not very versed in this stuff, but I am willing to bet that the bigger brand names charge a butt ton more for their manifolds because they invest in R&D. I don't know for certain, but to me that seems the most likely for the price markup.
I do agree its far more important in N/A applications than FI.
I do agree its far more important in N/A applications than FI.
03-23-2015, 12:05 PM
#343
You can throw most of that stuff out the window when you introduce a turbo which is a huge exhaust restriction. The exhaust manifold usually has more pressure in it than your intake manifold does when you're in boost and it is always wildly varying depending on throttle position, load, and wastegate position. If you have good wastegate placement where the wastegate flow path takes equal or greater priority than the turbo runner path I'm sure timing for resonant pulses would be all sorts of fucked anyways.
03-23-2015, 12:43 PM
#344
That's fair. I can simply ask for some info from Turblown before I order the manifold. That way we can have confirmed information. At the minimum they at least flow test their manifolds, where as I would venture to guess many custom manifolds are not. My point is things are usually not marked up for no reason at all.
Big assumptions..not likely borne out by actual fact.
Most things are marked up to what the marked will pay...and not necessarily based on value
03-23-2015, 02:52 PM
#345
That's fair. I can simply ask for some info from Turblown before I order the manifold. That way we can have confirmed information. At the minimum they at least flow test their manifolds, where as I would venture to guess many custom manifolds are not. My point is things are usually not marked up for no reason at all.
And a lot of things are marked up for no reason at all. Look at genuine Ferrari parts, the badges alone cost like 5 figures. That being said turbo manifolds are expensive for the time it takes to fit, test, and build a jig and then you have to take into account time it takes to fabricate (skilled labor) along with the cost of materials.
You're overthinking it and getting hung up on theories.
