Here's the finished product:
http://img219.imageshack.us/img219/6163/img00830mu0.th.jpg (http://img219.imageshack.us/my.php?image=img00830mu0.jpg)http://img219.imageshack.us/images/thpix.gif (http://g.imageshack.us/thpix.php)http://img233.imageshack.us/img233/1147/img00832zp4.th.jpg (http://img233.imageshack.us/my.php?image=img00832zp4.jpg)http://img233.imageshack.us/images/thpix.gif (http://g.imageshack.us/thpix.php)

I thought i would post up the finished results as some of you have corresponded with me about this sensor. Welp its installed, and is BEAUTIFUL!

I ended up using this as a sensor to monitor my intake temperatures after the turbo. I placed the small k-type thermosensor in the perrin hose between my intercooler and throttle body. I mounted the sensor on top because heat rises; i know it's rather an eye soar but i feel to get the best reading it needs to be at the top. I used pitcrew glue (silicon based) to seal it. I ran the connector cable to the thermosensor from the display unit through the firewall access beyond the foot pedals. After that, I cut the vent as you see with a grinding wheel and air compressor to make the unit fit snugly. It fits perfect, and the display is great. The unit takes 4 samples per second, so the read out is real-time. I have yet to use it yet, but i'm hoping to see number fluctuation based on using IC water spray. Because I'm running such high psi out of a small turbo, I feel it is very important to keep an eye on intake temps as well as exhuast temps.

:)


They fit great, are very bright, and are easy to use. You can hook up the GM boost electornic solenoid that measures boost, and run the 0-5v connection into this unit and it will display boost as well. It has a 3amp alarm relay output, and also has an input for illumination so it will automatically dim when you turn on headlights.

I'm going to rig up the relay to automatically turn on my intercooler spray once i figure out what the temperature range is. That should be nifty. You could also stretch it and hook up a voice recording greeting card, use text-to-speech generator on your computer, and record a message like "Commensing IC Spray" or something like that. That's what i was going to do with the EGT, was hook up the VR and have it tell me my EGT's were getting high. It's easy to hook up the VR greeting card, just run it with batteries and make a relay for continuity and soder the connections to the appropriate locations on the VR card. For the speaker, I would solder and run external connections, and place the speaker somewhere in a vent, near the driver, etc.

For $69.99 shipped, you can't beat it.

www.auberins.com (http://www.auberins.com/)

that is pretty cool man. i like your idea of the auto ic spray at certain temp thresholds.

other than the ic spray function you are working on, what good is it to know the post turbo intake temp?

I'm running 19.5 psi out of a tuned TD04 and supporting mods, and i want to make sure my turbo output temperatures aren't getting ridiculously hot when I'm trail riding during summers in florida. Gets real hot, gotta be careful b/c most the stuff i do is tactical trailing at idle speed. I want to get exhaust gas temp next. But for now monitoring the intake temperature right before the throttle body seems to be an ounce of cure before disaster.

Plus it will be nice to see the cool down effect of intercooler water spray. I haven't tested it yet, but i'm sure when its got all that heat built up on the TMIC from trailing, some nice water will cool down those intake temperatures. :D

Read this about temperatures and how it relates to detonation :X

http://www.gnttype.org/techarea/turbo/intercooler.html



Use this Calculator to estimate your temperature and if it is over 200 or 300 degrees you should get a monitoring system to help keep an eye on "detonation" temps from overboosting which is the typical cause of blown motors.

http://www.stealth316.com/2-turbotemp.htm


That calculator tells me that i'm running almost 320 degrees F in 110F ambient temperature before intercooler, and 117 after intercooler. It is amazing what an intercooler can do! I'm excited to see what temps I get.

Still waiting for pitscrew to dry "clear".. this may take a day or two before it's completely cured and I'll feel safe driving it.

still waiting for pitscrew glue / sealant to completely cure.... It's better today, prob 3 more days tops.

I will be interested in seeing your IC out temp. numbers... Subscribed.

Just wanted to post up that I finally got some measurements. Under hard operating conditions, ripping 1-3rd gear wot three runs consecutively, it gets up to 130F only under boost and quickly returns to 115-117 after you get out of boost.. Under normal operation, its around 113-115F. After letting the car sit after operation, with hood closed, temperatures reach up to 157F!!!!

It's pretty cool to watch the 4 samples per second while your boosting. I'll try to get a video

The ic spray has a 2 degree reduction at WOT scenario, and no effect on normal operation.

The outside temperatures were 75 degrees, sunny, and humidity levels at 56%. Samples were taken around 40-80ft above sea level running TD04@19.5psi max boost

Well it's nice to see some other numbers than mine... Your numbers seem very close to mine when my car was with it's stock Subaru set up. The only difference is your IC wet numbers, on my car there is a bigger difference in the WOT runs about 20*F colder when IC is wet. But in normal driving it's much closer, the difference is about 4*F colder when IC is wet as compared to dry...When starting off after being parked for 15 min. my numbers are 113*F IC wet, or 156*F IC dry... a 43*F difference. :)

nice so I'm really happy to see someone else out there thinks this is important. :D

What psi where you running to get 20F cooler WOT runs with ic being wet? I wonder if running at the 19.5 psi is making the heat difference. I think its a safe difference though.

Where did you mount your temperature probe? Mine is mounted on the top of the hose connecting the ic to the tb, as illustrated above. The silicon has cured and is now clear, not white fwiw lol. I thought about mounting it to the actual intercooler, but decided against that for various reasons.

I have the probe mounted in exactly the same place as you and my boost is 17 Psi. I think the biggest reason for the difference is airflow through the IC on my car is much more as I have vents with fans, STi hood scoop with separator/air deflector, and lots of other things. MY numbers at present are even more different but that's with everything that I have done so I didn't use those numbers... :) Here is my post about my numbers and what I did with my stock TMIC. http://forums.nasioc.com/forums/showthread.php?t=1606959 .

yeah i remember reading that thread a while back, it was good. I like your ideas about tmic cooling, and to be honest I would like to get a fan setup b/c when I'm offroading i could really use it trailing. Between fans and IC spray I would think it should sufficiently cool in the hot summers? I should probably upgrade the TMIC before I do that b/c the stockers aren't that good. Thank you for contributing to this thread as well!

I'd like to add that the recent cool night driving, and some air flow / IC spray technique development, I got it down to 86F intake temperature after it warmed up and red assing just like the above post taken during the day. 65F with a damp sea air when i was driving, if the air was a little bit dryer and cooler I might see lower temperatures. An ideal temperature for intake would be anywhere under 88F now. The car really felt much more responsive. Maybe it was placebo but I felt more response at 88F than 113-115F during the day.

I'll keep reporting to this thread each time I find more data. :D It's nice to use thread building as a way to collect data while building / modifying a vehicle. Then you can go back and look at it and analyze what exactly went on. It's almost impossible to recall every single detail that can be denoted rather than recalled.

I'm also relaying recorded data at this thread for my 3gsucks Tune!!
http://www.tamparacing.com/forums/subaru-tech/520533-tuned-3gsucks.html

Wanted to add data, 186F during extreme conditions off-road at slow speeds, see this video for how it got there

http://www.youtube.com/watch?v=U2WPp2gOmIQ

186*F, was that IC wet or dry?

dry, then wet cooled it back down to like 109-115, and it was during high rpm donuts in a sink hole in florida after trailing in 1st 2nd gear about 3krpm for about 5 min of deeeep sand. It was pretty intense. outside ambient temperatures were 75-80F and sunny, 50% humidity with 0mph wind (deep forest & sink hole lol)

That's the kind or situations where the water sprayer should keep the IAT down quite a bit. Under normal driving the water sprayer doesn't make as much difference because the IC can stay cool as long as there is adequate airflow through it while moving normally.

yeah i agree that's why I said good by windshield washer hello IC sprayer :) I love free mods haha.. I'm ashamed I did the same thing before w/o the temp gauge, or ic sprayer. This was during the summer at like 100F temps at 100% humidity. Lucky I had rain most the time about an hour into it, I timed it just right.


What does your temp read in canada during the extreme cold? :D That sounds fun from what reaction i've seen with the temp change here from 100 to 70 haha

just tried running some ice in the IC sprayer off road, it helped knock the temperature down some more. I could feel the difference with ice in my tank. This was at 75F in 50% humidity at sea level, and it dropped the intake temp another 10 degrees to run at like 95-100F at full boost running hard on and off road.

ICE is wonderful,my new best friend. Any downside to using ice in the ic spray?

ICE is wonderful,my new best friend. Any downside to using ice in the ic spray?

Are you making your own ice with distilled water? If not, you may be adding contaminants into the system.

Thanks for the reports.

just tried running some ice in the IC sprayer off road, it helped knock the temperature down some more. I could feel the difference with ice in my tank. This was at 75F in 50% humidity at sea level, and it dropped the intake temp another 10 degrees to run at like 95-100F at full boost running hard on and off road.

ICE is wonderful,my new best friend. Any downside to using ice in the ic spray?

Yes, Ice in the water works better and there is zero down sides to it as far as I can see. Now your next step is to isolate the IC from under hood temps and increase airflow though IC with a bigger Hood Scoop...:alien: Soon you will reap your rewards with basically zero heat soak and car running like it was in the winter even tho it may still be summer temps... :disco:

how would i isolate it? I was thinking about turbo heat shield, and some kind of way to deter water spray off from IC spray from hitting turbo. yes its cool to see the steam flowing in the projectors at night, with that deep grumble and rally legend story... but i dont know if thats safe or not... it doesn't really mess with the DP finish, b/c i polish it regularly and clean it often. There isn't tons getting dumped on the turbo or dp, but its just little drops here and there. is that safe?

You put some insulation/shields around/under the IC and insulation on the turbo shield like I did, makes a big/huge difference for lessening/eliminating IC heat soak when parked or going slow.

i increased the size of the heat exhaust chimney out of the roof scoop, will that help reduce heat soak?

before
http://img152.imageshack.us/img152/2506/scoopmodos4.th.jpg (http://img152.imageshack.us/my.php?image=scoopmodos4.jpg)http://img152.imageshack.us/images/thpix.gif (http://g.imageshack.us/thpix.php)

after
http://img175.imageshack.us/img175/279/img00907zi0.th.jpg (http://img175.imageshack.us/my.php?image=img00907zi0.jpg)