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Old 06-18-2019, 06:11 PM   #51
RacecarWRX
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Quote:
Originally Posted by anarekist View Post
been researching ways to decrease engine bay temps too and came across this guy

https://instagram.com/walkersmitholo...d=kl1u03trcjls

uses the verus mustang louvers
Holy moly, those are HUGE. He def cut through that rib that reinforces the hood. I wonder how much that effects the hood rigidity. I wonder if it has more to do with how the hood crumples in an accident.

I'm struggling to understand how the louver size relates to cooling. Part of me wants to say, larger = better, but the other half of me thinks that smaller = faster flow.

If the pressure differential is the same. IE underhood pressure to above hood pressure is the same differential, say 20 psi. I want to say that a smaller hole would have a higher velocity. I think this is Bernoulli's Principle.

Now is the net net cooling effect the same? No clue.

Quote:
Originally Posted by Scuby04STi View Post
Have you guys taken off the rear hood seal? I removed mine years ago on my '04 and have never had engine related temp issues.
Didn't think of this. I gotta go look at the hood and see if there is a seal there. I'll report back.

Quote:
Originally Posted by mike-s24 View Post
awesome build. nice work
Thanks!
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Old 06-18-2019, 06:16 PM   #52
Smunczen
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Very nice work. I think you enthusiasm for making the car better is great.
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Old 06-18-2019, 06:51 PM   #53
uofime
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Quote:
Originally Posted by RacecarWRX View Post
Holy moly, those are HUGE. He def cut through that rib that reinforces the hood. I wonder how much that effects the hood rigidity. I wonder if it has more to do with how the hood crumples in an accident.

I'm struggling to understand how the louver size relates to cooling. Part of me wants to say, larger = better, but the other half of me thinks that smaller = faster flow.

If the pressure differential is the same. IE underhood pressure to above hood pressure is the same differential, say 20 psi. I want to say that a smaller hole would have a higher velocity. I think this is Bernoulli's Principle.

Now is the net net cooling effect the same? No clue.





Didn't think of this. I gotta go look at the hood and see if there is a seal there. I'll report back.



Thanks!
I’ve never found one for exactly our body shape but you can find general pressure maps for the hood of a car. The low pressure area is right where the hood curves from vertical to horizontal and tapers as it moves back on the hood. You want the vents as far forward as is practical. Often there is a high pressure zone at the base of the windshield...

There is a seal at the back of the hood but theret is also the hvac intake which means it is a high pressure area. Definitely do not remove that seal or you’ll end up with more pressure under the hood.
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Old 06-18-2019, 09:28 PM   #54
RacecarWRX
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Quote:
Originally Posted by uofime View Post
Iíve never found one for exactly our body shape but you can find general pressure maps for the hood of a car. The low pressure area is right where the hood curves from vertical to horizontal and tapers as it moves back on the hood. You want the vents as far forward as is practical. Often there is a high pressure zone at the base of the windshield...

There is a seal at the back of the hood but theret is also the hvac intake which means it is a high pressure area. Definitely do not remove that seal or youíll end up with more pressure under the hood.
Ding ding ding! That matches verus data. Funny enough, you look at some cars and the vents are way back. I was looking at the White STi Bucky Lasek had and I couldn't figure out why they put the louvers so far back. The car was built by Vermont Motorsports, so I imagine they know what they are doing. I tried emailing to ask, but of course no one responded. Shurgs.

Thanks for the tip about the seal!
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Old 06-20-2019, 12:37 PM   #55
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Bracket is done! A video following how I made this will be posted next week. In the mean time, which way should I mount the shiftx3? Tach up or tach down?

IG: instagram.com/racecarwrx
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Old 06-21-2019, 11:54 AM   #56
RacecarWRX
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Pads are here (in my best DJ Pauly D impression)

Two sets of Gloc R16s to slow my the heavy WRX. Pre-bed and ready to rock! ROCK!

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Old 06-22-2019, 04:56 PM   #57
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Wiring for the shiftx3 is done! Here is a quick teaser vid.

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Old 06-26-2019, 12:40 PM   #58
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IG: instagram.com/RacecarWRX
Youtube: youtube.com/c/RacecarWRX

For those who are interesting, a rather long video of me making a bracket to mount my Shiftx3. The wiring video will follow next week. FYI the Shiftx3 requires an Autosport Labs datalogger. The wrx currently equipped with an Autosport Labs Racecapture Track.

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Old 07-02-2019, 01:16 PM   #59
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Shiftx3 Wiring video! 4 wires: Can High/Low, 12V power, and Ground. All the wiring is done under my seat because the datalogger is already there, so I tap into several pre-existing positaps. For reference, the datalogger is positapped into the can high/low wires running out the back of the OBD connector.

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Old 07-03-2019, 10:30 PM   #60
RacecarWRX
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More photos on the gram.

A video will come out in the next few weeks documenting the whole process for anyone who is interested.
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Old 07-09-2019, 09:08 PM   #61
RacecarWRX
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IG: instagram.com/RacecarWRX

In this video, I cover what you need to extract oil from the WRX, show you how to extract the oil, then review the results of the used oil analysis (UOA).

Last edited by RacecarWRX; 07-09-2019 at 11:48 PM.
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Old 07-10-2019, 03:12 PM   #62
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A little programming and BAM, wheel speed on the datalogger. Gunna try to grab tcs state as well.

Last edited by RacecarWRX; 07-10-2019 at 09:59 PM.
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Old 07-12-2019, 04:18 PM   #63
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A little more can bus fishing last night. Decoded the TCS lights on the dashboard. Everything is mapped into the datalogger to capture traction control status, and whether or not stability control is intervening.

Can ID:
211
Bit Mode (NOT BYTE)

"Traction Control" - does not have a light on the dash. However, trac mode or traction control is completely disable, this value goes to 0. A value of 1 indicates the system is full active.
Offset: 31
Length: 1

"Trac Mode" - a value of 0 indicates the Trac Mode light is disabled, meaning the car is not in trac mode. A value of 1 indicates the Trac Mode light is illuminated, and the car is in Trac Mode.
Offset: 4
Length: 1

"Traction Off Light" - a value of 0 indicates the Traction Off Light is disabled, meaning the traction control system is ON. A value of 1 for Traction Off Light, means the Traction Off Light is illuminated and Traction Control is off.
Offset: 12
Length: 1

"Stability Light" - a value of 0 indicates the Stability system is not intervening. A value of 1 indicates the Stability light is on, and the stability system is intervening. This value will flip from 0 to 1 rapidly when the system is intervening.
Offset: 25
Length: 1


Quick little demo of the Racecapture software mirroring the traction control system dash light changes.

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Old 07-21-2019, 07:28 PM   #64
uofime
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Do you have access port datalogs from any of your track events, preferably one with higher ambient temps?
Ran a pretty hot event last weekend myself and Im interested in how your intercooler, rad, oilcooler compare to mine.
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Old 07-25-2019, 12:45 PM   #65
andherewego
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I've seen you on the track, great driver
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Old 07-25-2019, 07:00 PM   #66
RacecarWRX
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Quote:
Originally Posted by andherewego View Post
I've seen you on the track, great driver
Thanks!

Quote:
Originally Posted by uofime View Post
Do you have access port datalogs from any of your track events, preferably one with higher ambient temps?
Ran a pretty hot event last weekend myself and Im interested in how your intercooler, rad, oilcooler compare to mine.

Uofime, I actually had to dig around but I found one. Unfortunately, I was not logging oil temperatures, however I can tell you oil hit 270F. Coolant, intake and manifold temps are inside the log. This was without an oil cooler and on 91 octane.

If I remember correctly, installing a cooler brought my temps down into the mid 250s. I'll try to find a log for that event, but I have a feeling I didn't save it.

Crazy to think my coolant temps hit 237F in this log. Oopsie....

Log here: https://docs.google.com/spreadsheets...it?usp=sharing
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Old 07-25-2019, 07:04 PM   #67
RacecarWRX
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I install some Verus Engineering rear toe arms.

The install is easy for anyone who is familiar with wrenching on cars, but hopefully others just dipping their toes find it helpful. I think one of the bigger topics covered is why you would choose a turn buckle style toe adjuster, and why you would choose a monoball rod end vs a rubber bushing.
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Old 07-25-2019, 07:04 PM   #68
RacecarWRX
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The hood louvers are done, and the track hood has been put on the car in preparation for Laguna Seca on Monday. So excited!!
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Old 07-30-2019, 11:20 PM   #69
RacecarWRX
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IG: RacecarWRX

Fastest lap from Laguna Seca!! Definitely room for improvement here, and the car was cooking the rotors. Pad were just fine, but the rotors developed so grooving and I was experiencing fade. There room to clean up my pedal work, nail braking points, and work on my line. But all in all, a once in a lifetime chance to drive on a childhood dream track!
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Old 07-31-2019, 12:23 AM   #70
kash $
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nice looking build!
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Old 08-01-2019, 12:13 PM   #71
RacecarWRX
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IG: instagram.com/racecarwrx

It doesn't even look like I'm going that fast. Derp.
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Old 08-04-2019, 12:50 PM   #72
RacecarWRX
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IG: instagram.com/RacecarWRX
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Here is a snapshot form my helmet mounted GoPro from Laguna Seca. The Shiftx3 is displaying my real-time performance compared to my theoretical maximum G. If the entire row of LEDs is green, I'm using all my maximum available grip. If there is some red LEDs then there is some grip left on the table.

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Old 08-04-2019, 01:41 PM   #73
BlueSTI4Me
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Nice laps. You need to join Track Subies on Facebook.
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Old 08-04-2019, 01:45 PM   #74
guiltysub
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Nice build and subscribed!
Do you still run TMIC? Is there reason you didn't go ahead with front mount i/c? And make the top mount for another cooling with radiator?
Have you thought put this car into race only car? I saw you still keep AC and so on. I wonder how amazing this car would be if you delete all of those weight out of this car.
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Old 08-04-2019, 04:57 PM   #75
RacecarWRX
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Quote:
Originally Posted by BlueSTI4Me View Post
Nice laps. You need to join Track Subies on Facebook.
I'm part of a group but not sure if it's the one you are referring to. Alot of the cars there are full race, super cool and inspiring.

Quote:
Originally Posted by guiltysub View Post
Nice build and subscribed!
Do you still run TMIC? Is there reason you didn't go ahead with front mount i/c? And make the top mount for another cooling with radiator?
Have you thought put this car into race only car? I saw you still keep AC and so on. I wonder how amazing this car would be if you delete all of those weight out of this car.
Still have a TMIC, it was a decision I made a long time ago. All the tuners for this motor say to run a FMIC but I was never to keen on deleting the crash beam. Now I have an oil cooler in front of the radiator and brake cooling inlets on the lower radiator grill. It just seems like a lot of work to go back and rebuild it. Maybe in the future but for now it works.

As for stripping out extra weight, I don't think I'll do that anytime soon. Maybe one day the car will get there, but for now I still enjoy the fact that I can carry 4 people, listen to music, run the AC, and have a full trunk of luggage. I really enjoy riding that fine line that is super inherent to Subarus, a sorta do do everything car. There are some mods that have limited it's usefulness, brakes without boot (no salt from snow, but I have a hatch for that) and the bucket seat and brakes can be give aways but they haven't limited what I can do with the car.
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