03-10-2007
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#441
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aka Goodbye
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Re: Finally getting stuff done on our cars
Spool isn't the problem, it's averting enough exhaust gases away from the turbo to keep the boost at a steady level. With a divided manifold and a single gate, the turbo is seeing less exhaust pressure from two of the runners than the other two. A single wastegate on a tubular manifold is usually plumbed into a merged collector, not a divided. This is similar to the way Buschur used to weld an HKS external on the number one runner of a stock manifold or the old cast T3 manifolds. I'm guessing this will cause some erratic boost control with this size turbo, but practice outweighs theory everytime. We'll see how it comes out. It shouldn't be that tough to add another wastegate later.
__________________
2009 Corvette Z51-SOLD
1992 Mitsubishi Eclipse GSX-SOLD
2013 BMW Z4-Current summer hooptie
2017 GMC Yukon-Current winter hooptie
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03-10-2007
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#442
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Join Date: Oct 2003
Location: Big Lake MN
Drives: 98 Eclipse GSX Auto
Posts: 1,516
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Re: Finally getting stuff done on our cars
Id be worried with high back pressure on 2-3 and low back pressure on 1-4. When the wastgate is open. But like Steve said people have been running gates of the #1 cly forever. I would try to do a single setup like in these attached pics.
Last edited by carltalon; 03-10-2007 at 04:03 PM..
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03-10-2007
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#443
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Banned
Join Date: Dec 2003
Location: Boulder, CO
Drives: Conquest
Posts: 5,049
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Re: Finally getting stuff done on our cars
Yeah, it should be fine. how big is the plunger/valve on the greddy type R?
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03-10-2007
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#444
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Now 20% less Racist
Join Date: Mar 2006
Location: St. Paul
Posts: 408
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Re: Finally getting stuff done on our cars
Sweet! i am impressed with the way the Galant is setup.
__________________
If I spent the same amount of $ on my car as I do on booze I'd have a 9 sec car by now!
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03-12-2007
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#445
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15min late to the world
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Re: Finally getting stuff done on our cars
I did plan on running the waste gate off the two collectors right befor the turbo and weld in a divider so there would be only a little cross over with the #1/4 to the #2/3. My thought is this turbo is huge, big, massive, the #1/4 will be full bore on the turbo but the #2/3 would have exhaust gas energy wasted. So I do not know how well a 1liter 2cylender motor would spool/keep a GT4202 spinning, 2 waste gates it is I guess.
~John
__________________
Moon taxi: 9.45@156.9 mph 41psi 2011... Letting people down sense 2012.
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03-12-2007
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#446
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aka Goodbye
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Re: Finally getting stuff done on our cars
There is another way. 
__________________
2009 Corvette Z51-SOLD
1992 Mitsubishi Eclipse GSX-SOLD
2013 BMW Z4-Current summer hooptie
2017 GMC Yukon-Current winter hooptie
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03-12-2007
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#447
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Shit Rocket Pilot
Join Date: Oct 2003
Location: Shoreview, MN
Drives: 2003 Evolution VIII
Posts: 7,752
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Re: Finally getting stuff done on our cars
Quote:
Originally Posted by Goat Blower
There is another way. |
I thought of that as well. Unfortunately, that would defeat the purpse of keeping the runners separated.
__________________
"If everything seems under control, you're just not going fast enough." -Mario Andretti
03 Mitsubishi Lancer Evolution VIII
Quote:
Originally Posted by Tachyon
Every minute you spend in your Evo, not in boost, is a minute of your life you'll never get back.
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03-12-2007
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#448
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aka Goodbye
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Re: Finally getting stuff done on our cars
Quote:
Originally Posted by Matt D.
I thought of that as well. Unfortunately, that would defeat the purpse of keeping the runners separated.
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Not really unless you're running real low boost.
__________________
2009 Corvette Z51-SOLD
1992 Mitsubishi Eclipse GSX-SOLD
2013 BMW Z4-Current summer hooptie
2017 GMC Yukon-Current winter hooptie
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03-12-2007
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#449
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15min late to the world
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Re: Finally getting stuff done on our cars
That was my first plan, I do have room under the turbo or under the primary runners, we will see. I would have it divided all the way to the bottom of the valve seat, which should be close enough.
~John
__________________
Moon taxi: 9.45@156.9 mph 41psi 2011... Letting people down sense 2012.
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03-12-2007
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#450
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Join Date: Oct 2003
Location: Fargo, ND
Posts: 181
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Re: Finally getting stuff done on our cars
Quote:
Originally Posted by Pushit2.0
http://www.lseperformance.com/galler...g2_itemId=3324
The waste gate will only be on the #2/3 collector, so the manifold will stay divided, if it runs less then 30psi I will be happy, race gas and track times are all I care about right now. If the boost goes low enough it will get a full pump gas tune, if not I will add another waste gate off the #1/4 collector.
~John
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Your only gonna run the gate off 1 side of the collector?? |
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03-12-2007
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#451
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15min late to the world
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Re: Finally getting stuff done on our cars
It was an idea, but I will put two 38s and be done with it, so it will be a true divided manifold.
~John
__________________
Moon taxi: 9.45@156.9 mph 41psi 2011... Letting people down sense 2012.
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03-15-2007
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#452
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Re: Finally getting stuff done on our cars
When, oh, when will Josh Swanberg finally release his choice in turbo/turbos?
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03-15-2007
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#453
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back in the saddle again
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Re: Finally getting stuff done on our cars
Quote:
Originally Posted by rst95eclipse
When, oh, when will Josh Swanberg finally release his choice in turbo/turbos?
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Once we are done testing and get some track times, I will release my new setup information.
__________________
My street car runs low 11's and my race car's personal best is a mid 11....
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03-15-2007
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#454
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Re: Finally getting stuff done on our cars
Sounds like there are some expectations. Is there a particular reason why you wouldn't release the information? In the past, you have been quite boisterous about the setup.
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03-15-2007
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#455
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formerly ecoli
Join Date: Oct 2003
Location: On the dyno
Posts: 4,892
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Re: Finally getting stuff done on our cars
Dual 2G DSM T25s with a 900 shot of NAWZ.
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03-15-2007
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#456
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I hate everyone
Join Date: Jul 2006
Location: Blaine
Posts: 938
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Re: Finally getting stuff done on our cars
^^^ Who told?!?!
__________________
Welcome to the internet, where men are men, women are also men, and underage teens are police...
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03-15-2007
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#457
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back in the saddle again
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Re: Finally getting stuff done on our cars
Quote:
Originally Posted by ecoli
Dual 2G DSM T25s with a 900 shot of NAWZ.
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Dammit you promised you wouldn't tell!
__________________
My street car runs low 11's and my race car's personal best is a mid 11....
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03-15-2007
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#458
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Join Date: Mar 2005
Location: Blaine, MN
Drives: '91 Automagic
Posts: 13,908
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Re: Finally getting stuff done on our cars
Motha fucka!!! Now everyone will know and swanny won't be shit.
Sucks for you. Well at least rst will be there for ya. he seems a little interested in your setup these days.
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03-16-2007
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#459
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back in the saddle again
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Re: Finally getting stuff done on our cars
Quote:
Originally Posted by rst95eclipse
Sounds like there are some expectations. Is there a particular reason why you wouldn't release the information? In the past, you have been quite boisterous about the setup.
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Alright I will tell you what I am running.
Twin tial 38mm wastegates with leaded valves and a tial BOV.
All in blue.
__________________
My street car runs low 11's and my race car's personal best is a mid 11....
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03-17-2007
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#460
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Banned
Join Date: Dec 2003
Location: Boulder, CO
Drives: Conquest
Posts: 5,049
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Re: Finally getting stuff done on our cars
I know I know, You switched the internally gated exhaust housings for non-internally gated ones. You sly dog you.
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