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Intake Manifold Test

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Old Jan 30, 2009 | 04:41 PM
  #106  
RoadSpike's Avatar
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Originally Posted by davidbuschur
I'd like to test a few more intakes crcain. If I find something better, I will run it. I want to be as fast as I can be.

roadspike, I have a flow bench about 200' from our front door. We use it quite often for cylinder head development. I can easily bolt an intake to a head and the head on the bench.

It would be pretty interesting to do that actually. I wonder if I'd be accused of messing with the flow bench too.............nope, not possible because I don't even run the bench. Might make for a good test. You'd be completely shocked at how much bolting an intake manifold or exhaust manifold to a head effects the flow of the cylinder head. It blew my mind years ago when we flow benched a bunch of exhaust manifolds on a cylinder head.

The one that flowed the best also made the most power on the dyno, it was the header design we ended up with on our tube chassis 2g. Actually that header was "copied" by someone else for their car too.
Sounds like it would be an interesting test. I don't believe it would copy the pulsing characteristics of the engines dynamics over rpm but definitely should be a great way to see how the VE of the part is being effected for overall flow

Do what you want though I already know the racetrack results speak for themselves.
Old Jan 30, 2009 | 04:47 PM
  #107  
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I agree with the pulses but I can tell you that based on doing this testing in the past that the flow bench seems to be a pretty good indicator of what works. It would be interesting to try it. I might make that a goal this week.
Old Jan 30, 2009 | 05:02 PM
  #108  
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Originally Posted by davidbuschur

Personally, a car equipped with a turbo similar to a GT35r (which after speaking with Keith today is close to what the Borg Warner turbo was that was used for his testing) that starts losing power at 7600 rpm has something wrong with it, that was on the original MSMIM. Then the car got the new style intake and power went up but fell off even earlier, starting to fall around 7400 rpm.

Then the stock intake was installed and power fell of starting at the same 7388 rpm.

I'd think a turbo that size would drop power that soon on a full build such as that. Just my observation.

Hell if I am going to get bad mouthed how about atleast giving me some credit for my car making power and not falling off on these graphs below. This is the test of the stock intake/original Magnus intake with my car at 30'ish psi on the HTA82. Note that the power on both intakes climbs to 8,000 rpm.

This look a little better??? Same car but I turned up our smoothing from the ten the graph was originally at to the sixty you show yours at. Showing the graph with very little smoothing shows the cars actual curve. Cranking up the smoothing just gets rid of peaks and bounds.



Some people may have drank their Hateraid today but it's not me! This tit for tat s**t is beneath me so I think this is where my stop is! Trying to give a little dig towards a car you know nothing about (this actual car, not the Evo, Obviously!) or why it was built a certain direction is a good way to push my buttons and make this end on a bad note.
David, I never personally attacked you or said anything negative and I plan on keeping it that way, so before I get a little more irritated than I already am I'll part ways here.

Last edited by Keith-PURE Tuning; Jan 30, 2009 at 05:07 PM.
Old Jan 30, 2009 | 05:45 PM
  #109  
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Originally Posted by davidbuschur
Personally, a car equipped with a turbo similar to a GT35r (which after speaking with Keith today is close to what the Borg Warner turbo was that was used for his testing) that starts losing power at 7600 rpm has something wrong with it, that was on the original MSMIM. Then the car got the new style intake and power went up but fell off even earlier, starting to fall around 7400 rpm.

Then the stock intake was installed and power fell of starting at the same 7388 rpm.

I'd think a turbo that size would drop power that soon on a full build such as that. Just my observation.

Here's my car today with the Wilson V2 on it, the HTA86 turbo, running to 8,000 rpm at 41 psi of boost, manual boost controller. This is no comparison but the power isn't falling off either.

Hell if I am going to get bad mouthed how about atleast giving me some credit for my car making power and not falling off on these graphs below. This is the test of the stock intake/original Magnus intake with my car at 30'ish psi on the HTA82. Note that the power on both intakes climbs to 8,000 rpm.
The Borg Warner turbo used in that test had the restrictive Bullseye DSM bolt-on style hotside (which is available T3 flanged). Stick their .70 T3 on it and you'd see dramatically more top end.
Old Jan 30, 2009 | 06:04 PM
  #110  
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Keith, my example was not a slam against you or your work. I spoke with you today to make sure you and I have no problems and I still don't. I simply getting a bunch of useless crap thrown at me and I pointed out that the car tested is losing power before I think it should with the combination listed. The new dyno graph you posted is losing power too at about 7800 it starts it's downward movement. Don't get yourself all riled up. I'm stating all three intakes lose power at high rpm, none of my testing did. BTW, you changed the RPM scale too while you were rescaling which helps the drop off not be so apparent.

evorace, your entire extremely long post was incorrect. Nowhere have I contradicted myself, if you read what I am saying about being biased you'd get what I was getting at. There is absolutely NOTHING in your rant that hasn't been addressed already and the rest of it is flat out babbling about nothing.

Last edited by David Buschur; Jan 30, 2009 at 06:07 PM.
Old Jan 30, 2009 | 06:52 PM
  #111  
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David. Do you feel that the $1550 intake manifold + core is a better buy than a Magnus cast at $1000 without core?
Old Jan 30, 2009 | 06:59 PM
  #112  
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Refer to post #73.
Old Jan 31, 2009 | 12:31 AM
  #113  
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evorace why would you use a test magnus did on their own intake as proof in a non bias test?
Old Jan 31, 2009 | 05:44 AM
  #114  
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Unfortunately this has turned into a flaming and baiting contest. Thread closed.
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