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Galant VR-4 Forums » Galant VR-4 » How To and Info Archive » Re: Intake Manifold Shootout
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Re: Intake Manifold Shootout


autobahntom
Senior Member
67/1000
974/1000



Galant VR-4 org Post #: 109974 posted 04/08/04 02:30 PM     Remind Me!  Send Private Message   Edit Post      
The link is the information link at the beginning of this thread. However, the last time I checked, it was down for some reason.
Tom

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arpa
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Galant VR-4 org Post #: 109975 posted 04/08/04 02:41 PM     Remind Me!  Send Private Message   Edit Post      
Actually it got moved to-> http://nabr.jayntguru.com/shootout

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Rice Killer
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Galant VR-4 org Post #: 109976 posted 04/08/04 02:56 PM     Remind Me!  Send Private Message   Edit Post      
Dam it I want some HP comparisons I dont care if the temperature was differient on each run or not, it was all done on the same car. It will still give us a better idea of what's going on. All these airflow charts dont translate into much, Chris didin't you do a little analyzing to figure out some more real world data? Where are the dyno charts that show HP and RPM??

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Hal
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Galant VR-4 org Post #: 109977 posted 04/08/04 03:26 PM     Remind Me!  Send Private Message   Edit Post      
Horse power levels from this test mean nothing unless the state of tune is altered to gain the best possible performance from each manifold.

Like wise, the rpm range used in testing must cover the optimum range for each manifold.

This test wasn't intended to show top power.

Like the results say, if you want max power then buy a BJ's or Magnus, twist the motor to 9500, and be done with it.

The airflow charts tell you a lot. There is even a little bit of interpretation done to help you understand what you are seeing.

Hal

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Minjin
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Galant VR-4 org Post #: 109978 posted 04/08/04 03:31 PM     Remind Me!  Send Private Message   Edit Post      
Any links to other discussion threads concerning this? I'm interested in seeing some other interpretations.

On this old computer at work with poor resolution, it looks to me like the Venom trounces those two in the tested RPM range. And that you've finally proved that a 1g intake is good enough for 99% of DSMers.

Mark

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Hibrn8
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Galant VR-4 org Post #: 109979 posted 04/08/04 03:52 PM     Remind Me!  Send Private Message   Edit Post      
Wow thanks guys!! These results are really superb.

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OrganicMechanic
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Galant VR-4 org Post #: 109980 posted 04/08/04 03:54 PM     Remind Me!  Send Private Message   Edit Post      
you guys did a extreamly thourgh job on data coralation and alowing us to determin what suits our individual needs. WAY TO GO... [Big Grin]

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Pivvay
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Galant VR-4 org Post #: 109981 posted 04/08/04 04:32 PM     Remind Me!  Send Private Message   Edit Post      
I'll comment here later but Hal said most of it. Read all the data for a while and think about it first.

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sleepyvr4
I Hate Kitty Cats


Galant VR-4 org Post #: 109982 posted 04/08/04 04:59 PM     Remind Me!  Send Private Message   Edit Post      
why isn't the forrester compared w/ the others?

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GVR-4
Creative Name Huh?
77/1000


Galant VR-4 org Post #: 109983 posted 04/08/04 10:37 PM     Remind Me!  Send Private Message   Edit Post      
Awesome job, guys! [Wink]

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14bCrazy
turdpolisher


Galant VR-4 org Post #: 109984 posted 04/09/04 08:52 AM     Remind Me!  Send Private Message   Edit Post      
This test to me shows that the stock intake is fine for most people like Mark said. I would say that for the extra HP that the others will give you might not be worth the extra money. In a race car yes but for the street I would have to say No. I like mid range power on the street and I looks like you would lose some with the aftermarket intakes. Thanks for doing this.

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RayH
Senior Member
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Galant VR-4 org Post #: 109985 posted 04/09/04 10:27 AM     Remind Me!  Send Private Message   Edit Post      
Nice test but I was really looking forward to the Cyclone results...

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Pivvay
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Galant VR-4 org Post #: 109986 posted 04/09/04 10:38 AM     Remind Me!  Send Private Message   Edit Post      
sorry we didn't have time to make the gaskets/assembly it. [Frown] Sort of a last minute miscommunication. We were there 8 hours just with the ones we had.

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Minjin
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Galant VR-4 org Post #: 109987 posted 04/09/04 03:53 PM     Remind Me!  Send Private Message   Edit Post      
After getting home and d/ling the dyno run viewer and doing some comparisons, I still think the Venom looks like the hands down winner. It doesn't drop in power any earlier than the Magnus or the BJ and it makes quite a bit more power everywhere else in the rev band. I know we're looking at airflow curves and trying to guess what will happen higher up, but I don't think the venom curve is peaking earlier, its simply better...

Look at the blue line in relation to the red line for each graph.

Mark

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Mitsuturbo
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Galant VR-4 org Post #: 109988 posted 04/10/04 03:56 AM     Remind Me!  Send Private Message   Edit Post      
Why is it that the stock manifold seems to outflow aftermarket ones in the midrange?

Is the stock manifold actually the best POSSIBLE manifold available for midrange power? Well, at least out of all tested?

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Pivvay
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Galant VR-4 org Post #: 109989 posted 04/10/04 12:41 PM     Remind Me!  Send Private Message   Edit Post      
i think it's very likely that the stocker rules all in midrange power.

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Hal
Unregistered


Galant VR-4 org Post #: 109990 posted 04/10/04 05:55 PM     Remind Me!  Send Private Message   Edit Post      
OEM manifolds usually provide better midrange performance.

That is, after all, where the car will spend most of it's life.

So, that is typically what car makers focus on.

Hal

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curtis Galant VR4.org Moderator
Space Blanket from NASA plumbed into the attic
475/1000


Galant VR-4 org Post #: 109991 posted 04/10/04 07:50 PM     Remind Me!  Send Private Message   Edit Post      
quote:
Originally posted by 92GVR4#333:
you guys did a extreamly thourgh job on data coralation and alowing us to determin what suits our individual needs. WAY TO GO... [Big Grin]

I agree nice job. Maybe me and Pete will build one for testing like we talked about if I ever get the welder wiresd and find a few extra days. Pete keep your mouth shut about design consideration [Big Grin] ......

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blacksheep
Baraqsheep
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Galant VR-4 org Post #: 109992 posted 04/12/04 02:16 PM     Remind Me!  Send Private Message   Edit Post      
In the last chart with all of the manifolds, the forrester is missing. Any reason?

Thanks!

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Notorius
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Galant VR-4 org Post #: 109993 posted 04/12/04 07:41 PM     Remind Me!  Send Private Message   Edit Post      
can we assume a stock manifold with the Extrude Hone process will yield even better midrange potential?

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OrganicMechanic
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Galant VR-4 org Post #: 109994 posted 04/12/04 08:02 PM     Remind Me!  Send Private Message   Edit Post      
not a word from me --I do have quite a bit of Carbon fiber cloth to play with as well. I still really want to do that mani.

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Larry Parker
Rally Member


Galant VR-4 org Post #: 109995 posted 04/19/04 11:23 PM     Remind Me!  Send Private Message   Edit Post      
Short runners are no good! Lets see a long runner mani with the proper plenum and airhorns raised off the floor...!! [Idea]

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CamZR4
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Galant VR-4 org Post #: 109996 posted 04/19/04 02:52 PM     Remind Me!  Send Private Message   Edit Post      
quote:
Originally posted by Larry Parker:
Short runners are no good! Lets see a long runner mani with the proper plenum and airhorns raised off the floor...!! [Idea]

This was my first thought, what part does the construction (partacularly the inlet to the runners) play in the results you got.
I've never seen any pictures of the insides of any of these manifolds except the FRH one, which is a little like the stocker in that the entries are rounded, but still IMO not a great design.

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CamZR4
Unregistered


Galant VR-4 org Post #: 109997 posted 04/23/04 02:55 PM     Remind Me!  Send Private Message   Edit Post      
Another quick Q.

Aproximately what power output was this car making.
You say it was detuned a bit for the testing, but the setup it has is capible of making some pretty serious power.
I feel power output (max airflow) would have quite an effect on how each manifold performed, particularly with relation to RPM. ie cross over points could move up/down the rpm range quite a bit depending on airflow (=horsepower)

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Pivvay
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Galant VR-4 org Post #: 109998 posted 04/23/04 03:57 PM     Remind Me!  Send Private Message   Edit Post   
400 uncorrected HP at 5800 feet alititute

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