Cast or tubular manifold?

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Jul 18, 2008 | 05:04 PM

#21

Zabac

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From: High Point NC

Quote:

Originally Posted by Braineack

intake manifold, yes.

Right, I know that, but I assumed Sam meant turbo manifold.

Quote:

Originally Posted by Saml01

Nobody is able to hit 10psi on a GT2560 @ 3rpm on a begi manifold?

I get the above numbers from compuatics thread with his spool problems.

That i am not sure about, Paul also has a very smooth 3" DP which helps a ton.

Jul 18, 2008 | 05:17 PM

#22

Braineack

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From: Chantilly, VA

begi exhaust
manifold doesnt flow as well.....

Jul 18, 2008 | 06:18 PM

#23

ZX-Tex

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From: San Antonio, Texas

Quote:

Originally Posted by y8s

ALL OTHER FUNCTIONS OF AN ENGINE REDUCE THE NET POWER GENERATED FROM THIS PROCESS.

so to maximize net power you can either raise the gross or lower the losses.

Jul 18, 2008 | 06:32 PM

#24

M-Tuned

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From: Vaughan, On, Canada

I can assure they that we have had ZERO cracking issues with this model. We once had a manifold crack with one of our old tubular manifolds and it was because the customer put relief cuts in the manifold. We don't recommend this with a tubular!

Jul 18, 2008 | 06:41 PM

#25

miatex

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Quote:

Originally Posted by Braineack

I certainly didnt make any extra power with my exhaust....

I don't get if this is a sarcastic comment.... but also I cannot believe all that power was made with ONLY an exhaust swap....

How much boost are you running in those graphs?

Thanks

miatex

Jul 18, 2008 | 08:38 PM

#26

Braineack

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From: Chantilly, VA

there was also headwork performed, but otherwise the setup was the same, just added an exhaust and tuned the fuel better. spark map was identical.

lower run was 12psi flat, better run was a 13psi spike, then dropped to 10psi, then linearly back to 13psi.

Jul 18, 2008 | 08:44 PM

#27

johndoe

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From: NYC

Quote:

Originally Posted by Saml01

What intake manifold comment?

I'm referring to this

Quote:

Originally Posted by SamL01

psst, ever hear of the s2000, 11:1.

If you want maximum spool response get the 54, want more top end and higher hp get the 60. If I was buying another turbo, id get a 54.

I know of one person that is using that intake manifold. Keep in mind that you wont have EGR anymore with it. I also firmly believe it does not improve anything, just bling. Youre already force feeding the air, a free flowing manifold wont produce any benefits.

from this thread: http://forum.miata.net/vb/showthread.php?t=291248