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Old 06-18-2019, 05:11 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, 05:16 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, 05:51 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, 08:28 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, 11:37 AM   #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
Youtube: youtube.com/c/racecarwrx
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Old 06-21-2019, 10:54 AM   #56
RacecarWRX
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IG: instagram.com/RacecarWRX
Youtube: youtube.com/c/RacecarWRX

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, 03:56 PM   #57
RacecarWRX
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Wiring for the shiftx3 is done! Here is a quick teaser vid.

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Old 06-26-2019, 11:40 AM   #58
RacecarWRX
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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, 12:16 PM   #59
RacecarWRX
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IG: instagram.com/RacecarWRX

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, 09:30 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, 08:08 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 10:48 PM.
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Old 07-10-2019, 02:12 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 08:59 PM.
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Old 07-12-2019, 03:18 PM   #63
RacecarWRX
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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 Yesterday, 06:28 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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