Nothing to see here, just project Sisyphus, move along - Page 75 - Miata Turbo Forum -Boost cars, acquire cats.

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Old 06-27-2015, 01:21 PM   #1481
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Jeff you just bought a torque wrench for almostv what a cheap lathe costs <img src="images/smilies/smile.gif" border="0" alt="" title="" smilieid="1" class="inlineimg" />
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Old 06-29-2015, 03:47 AM   #1482
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So this happened today...


Trackspeed Engineering COP bracket works with the Toyota 90919-02244 coil. Who knew? (Bracket is installed backwards in above pic.)


A good start...


Good thing the images are still working in the COPs thread.


Bundled up and the first section of heatshrink and loom


I had to bust out the big boy Weller iron to do the joints for the power and ground leads. I'm sure I'll be crucified for soldering but whatever.


Taa-daa! It tones out exactly as does the factory harness. That is, its hardwired for wasted spark. If I decide to set up sequential I'll just build another harness. Loose wire will eventually have a ring terminal so it can ground at the throttle body, just like the factory harness.


Adhesive heat shrink, nylon loom, new plugs and fresh GXL wire. I don't know what it is about building harnesses but I absolutely love doing it. When they work and fit of course.


Fitment is pretty good. My cops sit at a different angle than the ones Andrew uses in his kits, but everything still fits fairly well.


Length looks to be juuuuuust right.


I was a bit concerned where it turns the corner under the head so I triple heat shrink'd it. I may even wrap it with fancy silicone tape and file down the sharp edge on the head.

Anyway, that was fun.
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Nothing to see here, just project Sisyphus, move along-lomfguh.jpg   Nothing to see here, just project Sisyphus, move along-cxjaqps.jpg   Nothing to see here, just project Sisyphus, move along-q0jcs7l.jpg   Nothing to see here, just project Sisyphus, move along-xduswve.jpg   Nothing to see here, just project Sisyphus, move along-kidqlzd.jpg  

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Old 06-29-2015, 04:28 AM   #1483
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Looks pro, good work G! Wiring is indeed fun if time consuming. It is always the last 10% of the job that takes the longest for me to make it all come together.

By the end of the meth wiring though I was so done!
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Old 06-29-2015, 05:25 AM   #1484
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I like such clean wiring! Top notch!
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Old 06-29-2015, 07:01 AM   #1485
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Quote:
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I don't know what it is about building harnesses but I absolutely love doing it. Anyway, that was fun.
You are a sick, sick man. I won't even do wiring diagrams on the computer anymore.
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Old 06-29-2015, 07:24 AM   #1486
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What is that around the ground wires? It looks like you wire wrapped it or something.
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Old 06-29-2015, 09:48 AM   #1487
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Nice, super clean! Makes me want to re-do mine.
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Old 06-29-2015, 12:02 PM   #1488
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Thanks guys! Its really not that hard (he said before testing the harness) provided you take your time and plan it out step by step and DO NOT cheap out on materials. Quality solder/wire/loom/heat shrink makes all the difference in the world.

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What is that around the ground wires? It looks like you wire wrapped it or something.
Good eye! That's pretty much exactly what it is. You take a single strand of wire and use it to mechanically bind the wire bundle together before soldering. It makes bringing together multiple strands MUCH easier. In this case, I've got 4 grounds coming from the individual coils on one end and the ground to the throttle body and harness connector on the other. It's something I thought I invented years ago by applying my mad Boy Scout knot and rope skills to electronics, but I found out in the last couple years its called a "lash splice."

Not my pic, but this is essentially how you do it:



Here is a little more technical description of the splice:



The above says to tin the individual strands before binding, but I usually just hit the ends with my flux pen, bundle, bind and solder.

That's page 82~83 from this document: http://www.hq.nasa.gov/office/codeq/doctree/87394.pdf

In fact, every thing you ever wanted to learn or know about wiring, splicing or installing ends is in that document. It's a fabulous resource and worth saving.
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Old 06-29-2015, 01:35 PM   #1489
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Also, I forgot to mention... I went to move the car so I could open the garage door on Sunday and the car freaked the hell out. The car had been sitting in the sun all afternoon so it was thoroughly heat soaked into the 80s and the restart was terrible. It struggled to catch and once it did it was super rough, then it started oscillating between almost dying around 300~400 RPM and shooting up to about 2500 RPM. It would go super lean (18 indicated) on th low end and into the 14 range on the high end. Super strange because everything has been kosher up until then.

I got on the throttle and got it under control and it idled fine after that, but I haven not tried to start it since. I want to make sure this isn't a regular thing before I install the COPs. I'll start it tonight when I get home and try to get a log if it happens again. My tune is not the best, but I didn't think it was THAT far out of whack. :(
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Old 06-29-2015, 01:39 PM   #1490
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<p>Something it could be is IAC valve&nbsp;PID oscillations, or something to do with that. If it happens again look at the IAC duty cycle and if it hunting with it then it is idle tuning that you need to work on. If the duty is constant then it is probably something else.</p>
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Old 06-29-2015, 01:54 PM   #1491
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Yep, thought of that. Again, no laptop and no log so it'll have to wait. I was very surprised and it was more disappointing than anything else. My startups were not perfect, but they were passable and it let me worry about other things. Oh well, back to basics I guess
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Old 06-29-2015, 01:56 PM   #1492
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I have the SD card slot in the MS, maybe I should just stick a 4gb card in there and tell the MS to log all the things all the time. I think I can make it do that, right?
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Old 06-29-2015, 01:58 PM   #1493
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<p>Yes I think you can. Why no shadowdash?</p>
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Old 06-29-2015, 02:04 PM   #1494
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That would require bluetooth or something, and the giant adapter that EFI Analytics sells would never fit under my dash, and I'm lazy.
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Old 06-29-2015, 02:11 PM   #1495
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I've got that whole serial port that's completely unused on my MS, I guess I could try to use it for something? I'm a retard when it comes to this stuff, but this looks "easy" to set up? Bluefruit EZ-Link - Bluetooth Serial Link & Arduino Programmer [v1.3] ID: 1588 - $22.50 : Adafruit Industries, Unique & fun DIY electronics and kits
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Old 06-29-2015, 02:11 PM   #1496
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<p>False. Don't you read every thread thats ever posted here?</p><p>Shadow dash for race application</p><p>We discuss OTG cables. I have my OTG cable zip tied to my normal usb cable so that I can easily plug it in for tuning with my phone, or unplug it and plug the normal usb bit into my computer.</p>
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Old 06-29-2015, 02:12 PM   #1497
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<p>I prefer the cable method, but bluetooth works too.</p>
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Old 06-29-2015, 02:19 PM   #1498
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what camera do you use for the pics?
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Old 06-29-2015, 02:42 PM   #1499
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Quote:
Originally Posted by EO2K View Post
I have the SD card slot in the MS, maybe I should just stick a 4gb card in there and tell the MS to log all the things all the time. I think I can make it do that, right?
You can, but unless you have the RTC in it, the MS will reset the timestamp every time it powers on, so you wind up with 256 (which appears to be the max # of files it will create) 5 minute long files and no clue which one was which.

--Ian
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Old 06-29-2015, 02:45 PM   #1500
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Believe it or not I don't read everything posted on here.

I feel like it should be super easy to gin up a very compact straight serial to bluetooth adapter, seeing as how they are both using the same stupid RS232 standard.

Why should I not use bluetooth again? I mean, other than my obvious crippling ignorance and lack of ability to understand such things?

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what camera do you use for the pics?
Nexus 5 PHONE and a steady hand. I need to remember to change the default resolution on that thing, those pics are GINORMOUS!

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You can, but unless you have the RTC in it, the MS will reset the timestamp every time it powers on, so you wind up with 256 (which appears to be the max # of files it will create) 5 minute long files and no clue which one was which.

--Ian
Well, that's not as helpful as I thought it would be. (The SD slot, not your comment) IDK if my MS3-B has a RTC or not, I'll have to go check teh specs. Thanks for the heads up though.
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