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> check out this exhaust manifold, GT35R powered alltrac by speed-source
post Jan 5, 2007 - 11:36 AM
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jgreening

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Car porn for you perusal:

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QUOTE(lagos @ Jul 10, 2006 - 1:55 PM) [snapback]454118[/snapback]

i know your trying to do the right thing for your motor, but this is one of those times where you should just trust the guys who have had their swaps for a while and have done a ton of research into this.
 
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post Jan 7, 2007 - 3:46 PM
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jgreening

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Ah yes, the infamous post by RickyB from 2004 where he essentially argues that the stock manifold is not a performance limitation.

Perhaps you missed this reply (which was left unanswered) from a high hp 3sgte builder in the same thread:

QUOTE
What I noticed was left out of this post for some reason is a description and explanation of which setup will yield the greater volumetric efficiency... or is performance defined as turbo response? Or how about some details and explaination into determining what kind of pressure differential you want between your intake/exhaust... factoring in camshaft profiles and cam timing. Maybe your leaving out some details?? No??

To say that a decent shorty manifold will spool a turbo faster.. well... i thought that was common knowledge.

But for you to just go ahead and make a post saying that tubular style exhaust manifolds will yield "less performance" without far more supporting evidence here is pretty damn... well... ignorant.

There is a lot more to consider in engine performance and turbocharger system efficiency other than "short = hot = spools faster = better"

Based on what you say in your last paragraph... lets take it as vague as you say it.... do you think that if someone was trying to build a 1000hp 2.2L engine, they should use the stock exhaust manifold ported and coated?

BTW I am not trying to argue with you, I am just trying to get your educated feedback for more detailed explanation. I am still in the middle of my hands on R&D of exhaust manifold design so I am not prepared for a dispute with someone I am assuming must have done some R&D on this.


Or, perhaps you missed this post of of Ricky's from 2006:

QUOTE
I'm getting very close to my original goal of making a safe, daily-driving 350rwhp at 15-16psi on 91 octane. I have one more trick in mind that I think will get me there. I am going to ditch the stock exhaust manifold and have Hoover at Turbohoses build me a tubular exhaust manifold.

I have argued many times against poorly made tubular manifolds, but I am willing to try a well made one with good ceramic coating to see what it buys.
(emphasis added)

check it

I think Ricky's opinions have evolved some - perhaps yours should too.


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QUOTE(lagos @ Jul 10, 2006 - 1:55 PM) [snapback]454118[/snapback]

i know your trying to do the right thing for your motor, but this is one of those times where you should just trust the guys who have had their swaps for a while and have done a ton of research into this.

Posts in this topic
- jgreening   check out this exhaust manifold   Jan 5, 2007 - 11:36 AM
- - shin   dammmmmmmmmmnn.. i just wet my pants   Jan 5, 2007 - 12:06 PM
- - doGGy   Totaly different solution It looks really really ...   Jan 5, 2007 - 12:15 PM
- - x_itchy_b_x   same car i think. very original idea. i have a fri...   Jan 5, 2007 - 12:18 PM
- - snapshotgt   I heard the large amount of money this guy paid.. ...   Jan 5, 2007 - 12:36 PM
- - vg30dett93   This ones by FULL-RACE.COM it says it will fit fwd...   Jan 5, 2007 - 12:51 PM
|- - 94_st_hatchback   QUOTE(vg30dett93 @ Jan 5, 2007 - 12...   Jan 6, 2007 - 6:12 PM
|- - presure2   QUOTE(94_st_hatchback @ Jan 6, 2007 - 6...   Jan 6, 2007 - 6:16 PM
- - Punisher   Ya that AT has a 3rd gen in her... that is the onl...   Jan 6, 2007 - 1:00 AM
|- - Gary   QUOTE(Punisher @ Jan 6, 2007 - 1:00 ...   Jan 6, 2007 - 9:17 AM
- - NuclearHappineS   go to honda-tech and do a search for 'sidewind...   Jan 6, 2007 - 9:36 AM
- - hitcachi   I never really seen anything quite like that befor...   Jan 6, 2007 - 2:07 PM
- - playr158   meh, all those pipes do is act as a radiator loosi...   Jan 6, 2007 - 3:35 PM
- - jgreening   I'm sure you know better than the craftsman th...   Jan 6, 2007 - 5:47 PM
- - lagos   looks like they do really high quality work. the...   Jan 6, 2007 - 5:52 PM
- - Punisher   That full race manifold will work fine.. that is h...   Jan 6, 2007 - 11:53 PM
|- - Gary   QUOTE(Punisher @ Jan 6, 2007 - 11:53...   Jan 7, 2007 - 12:19 AM
|- - Punisher   QUOTE(Gary @ Jan 7, 2007 - 12:19 AM)...   Jan 7, 2007 - 1:15 AM
- - MaskedMan   How come in the first pic his valve cover (and may...   Jan 7, 2007 - 12:13 AM
- - playr158   QUOTE(jgreening @ Jan 6, 2007 - 5:47...   Jan 7, 2007 - 3:16 PM
- - jgreening   Ah yes, the infamous post by RickyB from 2004 wher...   Jan 7, 2007 - 3:46 PM
- - CilverSeliST205   This is a very informative thread, I never ran acr...   Jan 8, 2007 - 5:04 PM
- - playr158   QUOTE(jgreening @ Jan 7, 2007 - 3:46...   Jan 8, 2007 - 11:34 PM
- - Punisher   I think that manifold was done to fit that turbo m...   Jan 9, 2007 - 7:48 PM
|- - jgreening   QUOTE(Punisher @ Jan 9, 2007 - 6:48 ...   Jan 10, 2007 - 1:24 AM
|- - Punisher   QUOTE(jgreening @ Jan 10, 2007 - 1:2...   Jan 10, 2007 - 11:14 AM
- - lagos   QUOTE(jgreening @ Jan 10, 2007 - 1:2...   Jan 10, 2007 - 4:54 PM
- - azian_advanced   another similar exhaust manifold iono, just found ...   Feb 25, 2007 - 12:42 AM
- - playr158   thats your standard looking E-bay POS.. the fall a...   Feb 26, 2007 - 12:21 AM
- - Bigmeanbulldog55   I can't see an up-pipe adding that much to a t...   Feb 26, 2007 - 12:26 AM
- - x_itchy_b_x   it has do do with the pulses of exhaust gas hittin...   Feb 26, 2007 - 8:18 AM
- - tufy   manifold is very important. its not only shape thi...   Feb 28, 2007 - 5:36 AM


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