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twin 38mm wastegates

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Old 10-15-2011 | 06:14 PM
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Default twin 38mm wastegates

i was wondering wat is the max power i can get out of my turbo setup on the twin scroll manifold with two 38 mm wastegate
Old 10-15-2011 | 06:16 PM
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well whats your set up. what turbo?. built motor? specs?
Old 10-15-2011 | 08:00 PM
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yes all the above make a difference.

need specs
Old 10-16-2011 | 12:37 AM
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Motor/turbo/fuel system make the biggest determination in what kind of power you can make. Also, dual wastegates actually help with running lower boost levels with larger turbos (smoother boost curve, less chance of spike) - You can actually run higher boost levels with a smaller single gate with no issue. Funny enough, some of the LS1 guys running large turbos at 15+ psi and 700+whp actually use a single 38mm gate, its the guys who are wanting to run lower boost that tend to use multiple gates All in all it just depends on how much exhaust gas you need to vent, higher boost = less exhaust gas to vent as more as kept flowing through the turbine. So unfortunately the info you gave has almost no determination on how much power you can make.
Old 10-17-2011 | 05:08 PM
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k1 rods
je pistons
balance shaft delete
bc stage 2 cams
bc springs n reatrains
dezod race valves
gtx4204r turbo or precision PT7675 CEA
tt twin scroll manifold
golden eagle fuel rail
areomotive fpr
6an fuel lines
twin areomotive 340pump
1600cc injectors
e85 gas
aem standalone
Old 10-17-2011 | 05:59 PM
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okay start off with what you actually have on your set up.
Old 10-17-2011 | 06:17 PM
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i just need to buy the turbo n the standalone i have everything else im just trying to figure out if i should stay with the two 38s or upgrade to two 44s n would that help with spooling
Old 10-17-2011 | 06:22 PM
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n i cant deside on which turbo to buy
Old 10-17-2011 | 06:36 PM
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those are two really effin big turbo's man kinda overkill you probably wont catch full boost until 4 grand i'm guessing. you can get a more efficient turbo for our car. if you are dead set on it i'd suggest the GTX unit.
Old 10-17-2011 | 06:56 PM
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aGREE with syldrin, those turbo's are huge. What's the purpose of your build Daily
driven or Drag. From the turbo choices I'd say you want to drag race.

Tell us what the car is going to do so we can advise you.
Old 10-17-2011 | 11:43 PM
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Umm what are you planning on doing with the car??? You can get to mid 600whp on a 6262 and youll actually have a useable power band...
Old 10-17-2011 | 11:53 PM
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you can hit 600 on a 35R too.
Old 10-18-2011 | 06:34 AM
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i want to road race the car n break 1000 hp n i have another motor that im in the mid of bulid its at the machine shop now getting sleeves put in n then some other goodies i have been working on but that motor wont be done for sometime
Old 10-18-2011 | 07:30 AM
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That's still too big a turbo for road racing and 1000 HP is not usable in road racing really. Hope you have deep pockets my dude

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Old 10-18-2011 | 01:56 PM
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thats just my goal i have set for my self to break a 1000 n want to be able to hit full boost at 4500 to 5k rpm n i know i can use nos to do that but i dont want to i know its all about inatke flow to spool faster like port n polish intake manifold bigger throttle body
Old 10-18-2011 | 02:11 PM
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Originally Posted by kradstct
thats just my goal i have set for my self to break a 1000 n want to be able to hit full boost at 4500 to 5k rpm n i know i can use nos to do that but i dont want to i know its all about inatke flow to spool faster like port n polish intake manifold bigger throttle body
Make sure you add a $40k xtrac trans to your list, or at least put a deposit for us to produce our gear sets.
Old 10-18-2011 | 03:20 PM
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yea one of those will be needed
another queation i have is will my built block hold up or should i wait for the sleeved one to be done
Old 10-18-2011 | 04:17 PM
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just a quick question. what is your experiance with boost?
Old 10-18-2011 | 04:40 PM
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a couple years i boosted my tc in 08 for the first time n then been playing with random setups of small power for autox since then i have been more focused on the internals of the motor n just been enjoying 320 at the wheels but now i want to go big n have been piecing everything together for a year now
Old 10-18-2011 | 05:00 PM
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i dont think you will need to worry about WG's for a bit. you will have other issues while trying to reach your goal. btw therearent to many people to run 1000hp on a tc rado is one and he pops quite a few motors in a race season. for that type of power you're going to have to re-tune for every small thing i.e. humidity and temp every race just to keep the car from not popping. so i really hope you have some deep pockets for this.


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