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06-18-2020, 10:55 AM | #2201 | |
Scooby Specialist
Member#: 175624
Join Date: Mar 2008
Chapter/Region:
MWSOC
Location: Wichita, KS
Vehicle:0304 WRX WRX SY WRB |
Quote:
Makes sense, I was forgetting the throttle doesn't need to be jacked. I had seen these videos a while back that went over setting up the turbosmart system on a 2JZ drift car. It kind of makes me curious, because I've never seen a subaru header with those small fresh air tubes running to the primaries, even the WRC headers I've seen (maybe I've only seen the rocket ?). Do people usually set them up that way, or would it work as well with just one larger tube into the uppipe?
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06-18-2020, 11:29 AM | #2202 | |
Scooby Guru
Member#: 80649
Join Date: Jan 2005
Chapter/Region:
South East
Location: Columbia, SC
Vehicle:2000 2.5 Auto-X RSTi Sparkly |
Quote:
This setup is still doing a similar thing as the Haltech ALS I used where it's dumping fuel and retarding timing, but the fresh air is injected to act like a kicked throttle. A rocket is basically a fresh air system but with fuel injection or some method of including fuel (rotational idle/spark cut/etc) along with a separate chamber that has an ignition source as well (or can). Think of it in stages. Old style antilag was throttle plate kicks, retarded timing, and added fuel. Lots of heat, lots of wear, but basically full boost whenever you wanted via very high turbine speeds. The Turbosmart one is a bit of a hybrid in that it works without the throttle kick, and depending on where you introduce the air it will reduce damage to the exhaust valves and manifold. Then you've got the rocket where the engine isn't really doing much different than normal and you're controlling a secondary chamber that's igniting fuel/air and controlling turbine speed on it's own. All of it is cool for sure, and I wish I had the resources to build a rocket. That being said, I think the electric turbos in 48v flavor that are trickling out to market will be way more useful in the real world, and way more accessible too. |
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06-18-2020, 11:50 AM | #2203 | ||||
Scooby Guru
Member#: 33782
Join Date: Mar 2003
Chapter/Region:
MAIC
Location: Milton Keynes, UK
Vehicle:96 3MI Racing search FIRST, then PM!!! |
Quote:
The TB is still shut and making vacuum in the manifold, so brakes have vacuum. Quote:
Quote:
Quote:
Last edited by Homemade WRX; 06-18-2020 at 11:58 AM. |
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06-20-2020, 06:47 PM | #2204 |
Scooby Newbie
Member#: 442772
Join Date: Mar 2016
Chapter/Region:
MAIC
Location: Beautiful Downtown Goode, VA
Vehicle:2009 WRX sedan the faster charcoal grey |
Hi guys, I have a classing question also...I have a NA 2005 LEGACY WAGON and have done a few little things like coil overs, sway bars, 17x8 wheels with 235/45-17 tires and headers with a total replacement of exhaust system from there back....by my figuring that puts me in FSP is that correct?
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06-21-2020, 01:03 AM | #2205 |
Scooby Guru
Member#: 80649
Join Date: Jan 2005
Chapter/Region:
South East
Location: Columbia, SC
Vehicle:2000 2.5 Auto-X RSTi Sparkly |
If you still have a catalytic converter, you're legal for STX IIRC with the 17x8's. If you took the cats out then FSP is right.
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06-21-2020, 11:25 AM | #2206 |
Scooby Newbie
Member#: 442772
Join Date: Mar 2016
Chapter/Region:
MAIC
Location: Beautiful Downtown Goode, VA
Vehicle:2009 WRX sedan the faster charcoal grey |
Got cats? Lol
Hey thanks for the answer...and yes I still have cats because the ecu throws codes if you remove it...haven’t figured out how to get around inspection requirements to have one since it is a regular street driven car either...so two fairly difficult things to solve before chucking the cats.
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06-24-2020, 11:58 PM | #2207 | |
Scooby Specialist
Member#: 48377
Join Date: Nov 2003
Chapter/Region:
MWSOC
Location: "They eat fish soaked in lye"
Vehicle:1996 Gutted, built XP class Impreza L |
Quote:
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07-05-2020, 08:56 PM | #2208 |
Scooby Newbie
Member#: 221439
Join Date: Aug 2009
Chapter/Region:
E. Canada
Location: Quebec, Canada
Vehicle:2004 STI Blue |
For those with 400whp and more. What is your intercooler setup and what kind of IAT do you see on hot days on the track? Trying to get some benchmark to see how my A2W perform.
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07-06-2020, 12:23 AM | #2209 |
Scooby Newbie
Member#: 490192
Join Date: Aug 2018
Location: long island
Vehicle:0206 sedan wagon yellow red |
hey guys im kinda new been on for a while but havent posted i need some seat time . auto cross , track days whatever i can get into at an amatuer level. got a 2.5i 06 impreza , and a 02 em civic. any suggestions , im in long island
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07-06-2020, 02:43 AM | #2210 | |
Scooby Specialist
Member#: 48377
Join Date: Nov 2003
Chapter/Region:
MWSOC
Location: "They eat fish soaked in lye"
Vehicle:1996 Gutted, built XP class Impreza L |
Quote:
Try starting here- https://nyrsccasolo.com/getting-started.html |
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07-06-2020, 10:02 AM | #2211 |
Scooby Guru
Member#: 80649
Join Date: Jan 2005
Chapter/Region:
South East
Location: Columbia, SC
Vehicle:2000 2.5 Auto-X RSTi Sparkly |
I have a garrett core home brew front mount intercooler. Temp usually stabilizes around 130-135 on a 95 degree ambient day at 26-33 psi. If I bang off the limiter for a while it'll go up to 150, but then goes back down to mid 130's pretty quickly.
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07-07-2020, 12:40 PM | #2212 |
Scooby Newbie
Member#: 434904
Join Date: Nov 2015
Location: Spokane, WA
Vehicle:2002 Impreza WRX WRB |
What kind of temps are you seeing? I am using an undersized A2W intercooler (Type 14 on Frozenboost) and its not enough, I am going to have a custom one made to replace it using a bigger Garrett A2W core. My IAT's gain about 8 degrees/sec of WOT and peak in the 145ish range on a 90 degree ambient day for a 45 sec course. I went to the drag strip and hit 175 deg. The rest of the A2W system is oversized btw.
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07-08-2020, 09:20 AM | #2213 | |
Scooby Newbie
Member#: 221439
Join Date: Aug 2009
Chapter/Region:
E. Canada
Location: Quebec, Canada
Vehicle:2004 STI Blue |
Quote:
I have the type 26, which seems to be enough, but might require a few mod. CM90 pump, 3/4 hoses, very small rad in front of the car and a bigger one where the backseat is with 2 electric fan. On a 90 day I saw 160 at the end of the course on pump with around 18-19 psi. It's a slow and steady temp climb over the course. I need to increase water flow in the intercooler and increase water cooling capacity, I'll probably add a second water entry and exit to the intercooler. IAT graph Pic of the setup: https://photos.app.goo.gl/jxYyhW7itFwMbkBY6 |
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07-08-2020, 01:24 PM | #2214 | |
Scooby Newbie
Member#: 434904
Join Date: Nov 2015
Location: Spokane, WA
Vehicle:2002 Impreza WRX WRB |
Quote:
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07-08-2020, 05:50 PM | #2215 | |
Scooby Guru
Member#: 33782
Join Date: Mar 2003
Chapter/Region:
MAIC
Location: Milton Keynes, UK
Vehicle:96 3MI Racing search FIRST, then PM!!! |
Quote:
So if I'm understanding correctly, you are actually running both the front and and trunk mounted heat exchanger? Also that rear exchanger is set up to fail as it is. It's only source of air is those fans, and they aren't even pulling on the entire exchanger but only the area they're directly covering, mind you fans create low velocity near their root (center) and then also consider the size of the pancake motor driving it. I'd think you'd have far better temp drop on that core with a proper duct and your fans. Let the fans pull on a larger area. Not much that can be done to get you high pressure air infront of the exchanger while mounted in a car with SM rules. Also, I'm assuming the back seat has to be in for the class rules, no? If so, lay that sucker back and let airflow get in. I'd see about putting a duct through the backseat pass-through, and/or maybe pull the rear speakers and use those as inlets too. How are you venting hot air out of the trunk? Have you logged the water temp in and out of the rear exchanger on a run? IAT tells hardly any of the picture. |
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07-08-2020, 09:39 PM | #2216 |
Scooby Guru
Member#: 80649
Join Date: Jan 2005
Chapter/Region:
South East
Location: Columbia, SC
Vehicle:2000 2.5 Auto-X RSTi Sparkly |
You can ditch the rear seat in SM. I'm not sure on a bulkhead being required though between the driver and radiator. I don't think it is, but I was planning on leaving the corrugated plastic from the factory there as a mild safety barrier in case anything went pop.
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07-09-2020, 09:58 AM | #2217 | |
Scooby Newbie
Member#: 221439
Join Date: Aug 2009
Chapter/Region:
E. Canada
Location: Quebec, Canada
Vehicle:2004 STI Blue |
Quote:
Yes that's correct, at first I was running only the one in the backseat position in the car, now running both, but pretty sure I'll need a bigger rad in front. I've made a xilion test with better quality/power fan, push/pull setup, etc. I now have a proper fully sealed shroud in pull mode. These fan mostly help cool down between runs. I open the trunk and it takes about 10min. to get back to ambient temp without ice. If you need faster cool down you can fill it up with ice. On normal use the IAT temp are usually around 15-20F over water temps even at higher boost level. and water temp rise about 20F during an autocross run. It's the first time I can properly log temp with the new ECU. I have a water temp reading after it goes through the core and the front rad. Water temps reads around 105 - 110 at the end. So my guess is that there is stagnant water in the core the way the inlet and outlet is setup and that's why I see temp going much higher than water temp. I'm also adding a pressure gauge to the system this week to monitor pressure and try improving water flow. Any ideas are welcome |
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07-09-2020, 11:07 AM | #2218 |
Scooby Specialist
Member#: 175624
Join Date: Mar 2008
Chapter/Region:
MWSOC
Location: Wichita, KS
Vehicle:0304 WRX WRX SY WRB |
You're allowed to replace the trunk, so you can cut as much of the trunk off as you need, or make whatever vents and ducts you want as long as they are part of the "trunk"
Maybe move the rear rad from the seat bulkhead area, and mount it horizontally under the top surface of the trunk with a large hole for inlet (think Porsche 911 intercooler), and cut away the back of the lid for exit flow. And possibly a SP style spoiler at the back of the trunk to create more of a pressure difference across the rad? Is it legal to use a spoiler AND a wing? Does that count towards wing area? |
07-09-2020, 12:44 PM | #2219 | |
Scooby Newbie
Member#: 434904
Join Date: Nov 2015
Location: Spokane, WA
Vehicle:2002 Impreza WRX WRB |
Quote:
excerpt from section K of Street mod. "The total combined surface area of all wings shall not exceed 8 sq. ft. (0.7432 m2) as calculated per the Wing Area Computation in Section 12. The number of wing elements is limited to two (2)." |
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07-09-2020, 01:58 PM | #2220 | |
Scooby Guru
Member#: 80649
Join Date: Jan 2005
Chapter/Region:
South East
Location: Columbia, SC
Vehicle:2000 2.5 Auto-X RSTi Sparkly |
Quote:
The low pressure zone behind the car is generally enough to pull air out though without a spoiler. |
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07-10-2020, 11:54 AM | #2221 | |
Scooby Newbie
Member#: 221439
Join Date: Aug 2009
Chapter/Region:
E. Canada
Location: Quebec, Canada
Vehicle:2004 STI Blue |
Quote:
I've made a test doing 2 holes in the rear of the trunk, but as soon as you open a window you get air in the car from the back, which is pretty much exhaust fume. I though about adding louvers on the top of the trunk, not sure it would work better. I think you need a way to get a good source of air in the car for this to work. Not sure it can be done with SM rules. Some type of naca duct somewhere maybe or fit the hood scoop on the roof of the car |
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07-11-2020, 08:49 AM | #2222 |
Scooby Newbie
Member#: 221439
Join Date: Aug 2009
Chapter/Region:
E. Canada
Location: Quebec, Canada
Vehicle:2004 STI Blue |
Or something like this: http://www.speedhunters.com/2012/02/...saurus_drag_r/
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07-18-2020, 09:24 PM | #2223 |
Scooby Guru
Member#: 33782
Join Date: Mar 2003
Chapter/Region:
MAIC
Location: Milton Keynes, UK
Vehicle:96 3MI Racing search FIRST, then PM!!! |
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08-10-2020, 06:54 PM | #2224 |
Scooby Newbie
Member#: 434904
Join Date: Nov 2015
Location: Spokane, WA
Vehicle:2002 Impreza WRX WRB |
I'm going to be moving to heim jointed lateral links on my 02 WRX soon and I'm wondering if there is any common cascading effects that I'm going to have to prepare for. I'm mainly concerned about wallowing out the bolt holes through the subframe or tweaking it. Rear subframe is solid mounted. Car is not fully SM prepped yet, stock fenders and stock aero, but I made some major changes in power and handling this year and am having some related issues. Polyurethane bushings are flexing too much and allowing my tires to rub the unibody, short lifespan on wheelbearings, etc. I'd like to get on top of things instead of waiting for it to break, I drive to the track rather than trailer so its important to me.
Thanks |
08-10-2020, 08:53 PM | #2225 | |
Scooby Specialist
Member#: 48377
Join Date: Nov 2003
Chapter/Region:
MWSOC
Location: "They eat fish soaked in lye"
Vehicle:1996 Gutted, built XP class Impreza L |
Quote:
If your tires are rubbing the best thing to do is find the rub location and modify it. As you continue to lower the car and increase grip the problem will only get worse. Alternately, find a different size tire to run that will not rub. These are common problems in SM. Have fun. |
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