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Injected Performance Cosworth Inlet Manifold REVIEW

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Old Dec 19, 2007 | 08:40 AM
  #181  
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Originally Posted by Z1 Performance
I don't think the results are disppointing, I think they are interesting to say the least, and sets the groundfloor for what others suspected the manifold will do. I don't think this was designed with a stock motor in mind
Exactly,

Of course when the manifold shows up we don't have any of the built cars ready to test it on, only stock or near stock Z's
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Old Dec 19, 2007 | 08:44 AM
  #182  
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I am not sure what it will do for a 04 engine with a Vortech SC and stock rev limiter... I would not want to loose the mid range TQ / HP for the peak gains at redline. And with a stock rev limiter on a non revup engine I will never see 7k plus redlines...

hmmmm decisions, decisions.
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Old Dec 19, 2007 | 08:45 AM
  #183  
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Then they should not market this to NA or near stock cars coz it is not worth the $$$ I think Sharif should rename his thread from Cosworth Plenum FI/NA: Pics Inside! to Cosworth Plenum If you want to rev past 7000rpm: Pics Inside!

Last edited by athenG; Dec 19, 2007 at 08:48 AM.
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Old Dec 19, 2007 | 08:45 AM
  #184  
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I honestly don't care about the performance gains. 1) I know there will be gains 2) Its just so well crafted that it will be the center of attention under the hood.
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Old Dec 19, 2007 | 08:55 AM
  #185  
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a Vortec's strength on an otherwise stock motor is the top end...so why not fit something that improves that? Mid range is not a centrifugal superchargers strong suit
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Old Dec 19, 2007 | 08:55 AM
  #186  
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Originally Posted by athenG
Then they should not market this to NA or near stock cars coz it is not worth the $$$ I think Sharif should rename his thread from Cosworth Plenum FI/NA: Pics Inside! to Cosworth Plenum If you want to rev past 7000rpm: Pics Inside!
A. No one knows what setups will excel with this maifold as so far we have only seen the manifold installed on two cars.

B. This is not Sharif's thread this is Injected Performances'
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Old Dec 19, 2007 | 08:58 AM
  #187  
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i think for a stock or near stock Z the spacers and mrev still take the cake for power to buck ratio of course. This mod seems to benefit high build engines with increased rev limiters . The bling factor is def there but for a G on a Revup or 287 it just doesnt addup. Maybey if we increase a revups redline to that of a HR maybey the gain would appear beyond stock limits?
i was really hoping that on a revup motor NA with a increased redline we would see a nice peak hp gain previously unseen with spacers. I can def see this mod pushing crazy volume with a FI build but tuning is def in order and much trial and test since where in its infant stage as far as knowing what it can do.
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Old Dec 19, 2007 | 09:56 AM
  #188  
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Originally Posted by InjectedPerf
Exactly,

Of course when the manifold shows up we don't have any of the built cars ready to test it on, only stock or near stock Z's
That's because of the pricing. The guys who are putting it in are using all of their "MOD" money on this, thinking it's "acceptable rice." In the near-stock N/A Z, would this be considered a rice item like the Kinetix SSV? Then again you could always make the argument "Well, it's for WHEN I go built/twins"
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Old Dec 19, 2007 | 09:58 AM
  #189  
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Originally Posted by Robert_K
I honestly don't care about the performance gains.
Case in point!
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Old Dec 19, 2007 | 10:04 AM
  #190  
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Originally Posted by Cube
That's because of the pricing. The guys who are putting it in are using all of their "MOD" money on this, thinking it's "acceptable rice." In the near-stock N/A Z, would this be considered a rice item like the Kinetix SSV? Then again you could always make the argument "Well, it's for WHEN I go built/twins"

cause kinetix spend months doing r&D on the Ssv
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Old Dec 19, 2007 | 11:00 AM
  #191  
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Originally Posted by Cube
Case in point!
My JWT TT kit will be installed this April. So I will see gains. Guess that's why I'm not so worried about it. However, I would recommend the spacer over this to the average owner that 1) can't afford a $1k plenum 2) know 100% staying N/A.
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Old Dec 19, 2007 | 12:02 PM
  #192  
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Originally Posted by Z1 Performance
I don't think the results are disppointing, I think they are interesting to say the least, and sets the groundfloor for what others suspected the manifold will do. I don't think this was designed with a stock motor in mind
+1000000000....

That is what I have said in the past.... Cosworth knows that we are boosting these cars and that we need better flow....I am sure FI was the main thing on their minds when they designed this plenum
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Old Dec 19, 2007 | 02:35 PM
  #193  
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Originally Posted by Z1 Performance
You've completely misread what I wrote, but that's fine, you're entitled to your opinion. The duration is one small part of the cam equation. Many other factors determine the peak power that happens and where in the rpm range it happens. I never said that there is no place for a cam bigger than a 264. But it has to be matched to the rest of the setup, and the lift and ramp rate are far more critical aspects than just the advertised duration. If you want bigger, that's fine, but a "264" tells you just about nothing when its all said and done. It's about matching a cam to the rest of the setup, not the other way around IMHO. There are cams that some might consider mild on the duration side, for various platforms, that absolutely crush higher duration cams. But each motor has a sweet spot that it wants, and there are lots of variables involved in determining what cam a particular engine craves. Going strictly by the off the shelf #'s is among the worst ways to select a camshaft for any motor.
Exactly. I know there are many other variables that contribute to a cam besides the duration, but usually more duration= more lift= more power....usually. For me a 264 is a dumb choice with the power I am going for and trying to gain any power possible over 7k. This I why chose a 272+ with a big lift. For my motor it makes more sense. I said that for someone just wanting power under the curve and not trying to push the limits then a 264 would be fine, but for others really trying to get all they can out of a setup then a properly designed bigger cam will be helpful.
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Old Dec 20, 2007 | 11:39 AM
  #194  
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https://my350z.com/forum/forced-induction/323001-injected-performance-cosworth-dyno-test-at-7000-rpm-fi.html
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Old Dec 20, 2007 | 07:11 PM
  #195  
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I'm waiting to see what it will do on Adam's motor or an N/A motor with cams and Cosworth heads, I"m betting we see a better gain then. I see a lot of bitching about the price of a truly engineered, new design manifold for our cars that few others have attempted, when you add up the price of an MREV 2 and a spacer your at what 650.00? for a modified stock manifold and a 5/16
inch piece of CNC alluminum. (no disrespect Tony, just trying to put some of these haters in check)
I think the hype and expectations got out of control and everyone who wants one but cant get one is bashing here, its one manifold on two almost stock cars thats been out for three days, let the other shops get thiers in and give it some time, the results will come, actually they already did!
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Old Dec 21, 2007 | 06:53 AM
  #196  
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I don't have Cosworth heads
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Old Dec 21, 2007 | 09:11 AM
  #197  
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want to see more results!!
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Old Jan 2, 2008 | 04:48 PM
  #198  
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Hal or other Injected guys,

does this manifold come with molded rubber gaskets for the end caps or do you have to use liquid gasket? I can see a recessed gasket area in your pics on the 1st page of this thread.

thanks,
Andrew
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Old Jan 2, 2008 | 05:02 PM
  #199  
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I think I recall reading they included a molded gasket
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Old Jan 2, 2008 | 06:15 PM
  #200  
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Hal is my hero!!
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