Fast intake and Forced Induction
Fast intake and Forced Induction With a twin turbo set up, will the system gain or benefit as much from a better flowing intake as a N/A or Nitrous system might gain.??? Any input?
jammer i was going to ask the same question about my vortech though. I saw an lsx 90 mm intake on Jay(absolutes) flow bench yesterday. it flowed 12 cfm higher then a stock ls6. made me start thinking about buying one. I believe you would see more of a gain on a turbo car then a forced induction, considering the supercharger forces air into the intake already.
IMO It's not woth paying that amount of money for a little more flow. I have the Weiand intake and ported to match the heads. It flow more than the LS6 intake now and I only paid 400 bucks, plus a little more for the porting.. Pict are in my Sig.. Also people say the heat plays a role on these aluminum intakes. I run my car hard and the intake is not that hot at all.
Clint
Clint
Originally Posted by mike m
I believe you would see more of a gain on a turbo car then a forced induction, considering the supercharger forces air into the intake already.
Any gain in system efficiency is gonna help, even with boost. Whether you get more flow for a constant boost level (ie keeping the same waste gate setting), or just a reduction in temps due less work from the blower, or, or...
Is it really worth it for nearly $800, or whatever the 90mm versions are going for? IMO, not yet. My LS6 manifold and unported TB are still doing just fine
TECH Addict
Joined: Dec 2001
Posts: 2,337
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From: Auburn, AL
Originally Posted by y2khawk
Any gain in system efficiency is gonna help, even with boost. Whether you get more flow for a constant boost level (ie keeping the same waste gate setting), or just a reduction in temps due less work from the blower, or, or...
Is it really worth it for nearly $800, or whatever the 90mm versions are going for? IMO, not yet. My LS6 manifold and unported TB are still doing just fine
Why haven't you ported your TB during all your work on the car? Just wondering if you had a theory behind not doing it, or you just hadn't got around to it.
I personally did think it would be worth much. I'm not really making the blade bigger, so why bother. Plus, it's alow easier to blow through the TB than suck through it like an NA combo. Can't draw through the TB past supersonic, that's why restrictors work in the racing world. But you can continue to blow through, just with a small hit due to pressure drop.
my .02 on it
my .02 on it
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Less intake restriction or exhaust restriction post blower will usually result in a lower measured manifold pressure. That does not mean there is less power or air being put into the motor.
Lower delta pressure across the compressor may result in less power being used by the blower, i'm not sure. But using the general connection between how a centrifugal blower map looks compared to a turbo map, you stay at the same flow but with less pressure ratio. Usually you end up moving to a more efficient range on the map in that case. And that ends up adding less heat to the air as it's compressed.
If you pulley up to get the boost back, you end up w/ more air(ie power)
In the case of a turbo, you usually maintain a constant pressure via the waste gate anyway so you get the added power without having to buy pulleys
When i say delta pressure, i mean the absolute pressure at the inlet to the compressor versus the absolute pressure at the outlet of the compressor.
Lower delta pressure across the compressor may result in less power being used by the blower, i'm not sure. But using the general connection between how a centrifugal blower map looks compared to a turbo map, you stay at the same flow but with less pressure ratio. Usually you end up moving to a more efficient range on the map in that case. And that ends up adding less heat to the air as it's compressed.
If you pulley up to get the boost back, you end up w/ more air(ie power)
In the case of a turbo, you usually maintain a constant pressure via the waste gate anyway so you get the added power without having to buy pulleys
When i say delta pressure, i mean the absolute pressure at the inlet to the compressor versus the absolute pressure at the outlet of the compressor.
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Verdad Gallardo Hawk, I didnt see you comment before so I'll ask here. Mu intake plumbing from turbo to intercooler is 2"...and 3" from IC to TB... should I be upgrading or see how it goes?
My DP's are stepped to 3" (each) at the waste gate exhaust BTW.
My DP's are stepped to 3" (each) at the waste gate exhaust BTW.
