Konmo's 1990 Turbo VVT Swap
#21
Junior Member
Thread Starter
iTrader: (2)
Join Date: Dec 2014
Location: Salinas, CA
Posts: 307
Total Cats: 23
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
I started focusing on the engine now. I removed the oil pan to clean it up and prep it for a oil return bung (3/8 in. NPT) and another bung for oil temp(1/8 in. NPT). My buddy works at an agriculture welding/fabrication shop so I got him to help me out. I'm not a welder myself, but I think it came out pretty good.
![Name: 20160910_124802.jpg
Views: 312
Size: 207.3 KB](https://www.miataturbo.net/attachments/build-threads-57/181102d1501200481-konmos-1990-turbo-vvt-swap-20160910_124802.jpg)
oil return
![Name: 20160910_141211.jpg
Views: 318
Size: 206.9 KB](https://www.miataturbo.net/attachments/build-threads-57/181103d1501200481-konmos-1990-turbo-vvt-swap-20160910_141211.jpg)
oil temp
![Name: 20160910_124802.jpg
Views: 312
Size: 207.3 KB](https://www.miataturbo.net/attachments/build-threads-57/181102d1501200481-konmos-1990-turbo-vvt-swap-20160910_124802.jpg)
oil return
![Name: 20160910_141211.jpg
Views: 318
Size: 206.9 KB](https://www.miataturbo.net/attachments/build-threads-57/181103d1501200481-konmos-1990-turbo-vvt-swap-20160910_141211.jpg)
oil temp
![Name: 20160910_141239.jpg
Views: 313
Size: 248.3 KB](https://www.miataturbo.net/attachments/build-threads-57/181104d1501200481-konmos-1990-turbo-vvt-swap-20160910_141239.jpg)
#25
Junior Member
Thread Starter
iTrader: (2)
Join Date: Dec 2014
Location: Salinas, CA
Posts: 307
Total Cats: 23
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
Next I started working on my fuel system. For this I had a dual feed fuel rail, not sure what brand and some ID1000 injectors.
![Name: 20160912_210527.jpg
Views: 295
Size: 241.1 KB](https://www.miataturbo.net/attachments/build-threads-57/181093d1501200455-konmos-1990-turbo-vvt-swap-20160912_210527.jpg)
I was going to make my own braided lines with AN fittings so I bought the fab9 premium fuel line/regulator kit. It came with a fuelab 515 series fpr and all the fittings/hose needed. This was the end result which turned out well if you ask me.
![Name: 20160912_210527.jpg
Views: 295
Size: 241.1 KB](https://www.miataturbo.net/attachments/build-threads-57/181093d1501200455-konmos-1990-turbo-vvt-swap-20160912_210527.jpg)
I was going to make my own braided lines with AN fittings so I bought the fab9 premium fuel line/regulator kit. It came with a fuelab 515 series fpr and all the fittings/hose needed. This was the end result which turned out well if you ask me.
![Name: 20160913_142049.jpg
Views: 333
Size: 315.0 KB](https://www.miataturbo.net/attachments/build-threads-57/181094d1501200455-konmos-1990-turbo-vvt-swap-20160913_142049.jpg)
#31
Junior Member
Thread Starter
iTrader: (2)
Join Date: Dec 2014
Location: Salinas, CA
Posts: 307
Total Cats: 23
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
And of course I need an ECU to run all this stuff, so I started wiring in the MSPNP Pro that I had also sitting in my room waiting to be installed on the right car.
![Name: 20160918_101306.jpg
Views: 299
Size: 332.9 KB](https://www.miataturbo.net/attachments/build-threads-57/181070d1501200429-konmos-1990-turbo-vvt-swap-20160918_101306.jpg)
Installed a big K&N filter that I happened to have laying around and it just barely fit.
![Name: 20160920_002728.jpg
Views: 303
Size: 231.6 KB](https://www.miataturbo.net/attachments/build-threads-57/181071d1501200429-konmos-1990-turbo-vvt-swap-20160920_002728.jpg)
![Name: 20160920_002747.jpg
Views: 287
Size: 294.8 KB](https://www.miataturbo.net/attachments/build-threads-57/181072d1501200429-konmos-1990-turbo-vvt-swap-20160920_002747.jpg)
Put the hood back on and I rolled it out of the garage again.
![Name: 20160918_101306.jpg
Views: 299
Size: 332.9 KB](https://www.miataturbo.net/attachments/build-threads-57/181070d1501200429-konmos-1990-turbo-vvt-swap-20160918_101306.jpg)
Installed a big K&N filter that I happened to have laying around and it just barely fit.
![Name: 20160920_002728.jpg
Views: 303
Size: 231.6 KB](https://www.miataturbo.net/attachments/build-threads-57/181071d1501200429-konmos-1990-turbo-vvt-swap-20160920_002728.jpg)
![Name: 20160920_002747.jpg
Views: 287
Size: 294.8 KB](https://www.miataturbo.net/attachments/build-threads-57/181072d1501200429-konmos-1990-turbo-vvt-swap-20160920_002747.jpg)
Put the hood back on and I rolled it out of the garage again.
![Name: 20160919_081833.jpg
Views: 290
Size: 287.0 KB](https://www.miataturbo.net/attachments/build-threads-57/181073d1501200429-konmos-1990-turbo-vvt-swap-20160919_081833.jpg)
#32
Junior Member
Thread Starter
iTrader: (2)
Join Date: Dec 2014
Location: Salinas, CA
Posts: 307
Total Cats: 23
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
After finishing the ECU wiring I did the first start. I used the 01-05 basemap and it worked well to at least get it started and running.
Last edited by konmo; 04-26-2017 at 08:25 PM.
#33
Junior Member
Thread Starter
iTrader: (2)
Join Date: Dec 2014
Location: Salinas, CA
Posts: 307
Total Cats: 23
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
Now we get to the not so good part of the build...I was a happy camper for about a day or two. I hadn't really driven it to much, I was first trying to tune my idle. Once I finally did go on the road, I took it for a cruise around town and I hoped onto 101 south. It was driving fine for about an hour, I was about to get home when all of a sudden my lights started to flicker then my wipers turned on by themselves. Right away I knew something was wrong, I turned right to go into a shopping center parking lot and as I turned the car shut off and smoke started coming from the passenger side floor area. I thought oh noooooo this can't be good, and of course, it wasn't. This is what happened to my megasquirt ECU.
![Name: 20160921_004121_1.jpg
Views: 317
Size: 149.7 KB](https://www.miataturbo.net/attachments/build-threads-57/181067d1501200429-konmos-1990-turbo-vvt-swap-20160921_004121_1.jpg)
![Name: 20160921_004059_1.jpg
Views: 272
Size: 318.2 KB](https://www.miataturbo.net/attachments/build-threads-57/181068d1501200429-konmos-1990-turbo-vvt-swap-20160921_004059_1.jpg)
![Name: 20160921_004326.jpg
Views: 290
Size: 185.6 KB](https://www.miataturbo.net/attachments/build-threads-57/181069d1501200429-konmos-1990-turbo-vvt-swap-20160921_004326.jpg)
Right away I started looking at getting it repaired. This happened at night, the next day I had already shipped it back to DIYAutotune for repairs. I also was trying to figure out why the ECU got fried. I started a thread over at mt.net and people started giving their 2 cents of what could've cause this. One of the persons said that it looked like their was too much voltage going to the ECU. Then asked if I was using the original VVT alternator, which I was. I hadn't run the extra wires from the ecu that were needed for alternator control and things started to make sense. I remembered that I had been taking a log during that drive so I opened up the log. Just like they suspected, the alternator had been overcharging my battery, which it ruined by the way. The voltage at the ECU had been slowly rising, right before the ECU got fried and the log stopped, the voltage was at 26 volts! I'm surprised it even ran for that long at such a high voltage.
![Name: 20160921_004121_1.jpg
Views: 317
Size: 149.7 KB](https://www.miataturbo.net/attachments/build-threads-57/181067d1501200429-konmos-1990-turbo-vvt-swap-20160921_004121_1.jpg)
![Name: 20160921_004059_1.jpg
Views: 272
Size: 318.2 KB](https://www.miataturbo.net/attachments/build-threads-57/181068d1501200429-konmos-1990-turbo-vvt-swap-20160921_004059_1.jpg)
![Name: 20160921_004326.jpg
Views: 290
Size: 185.6 KB](https://www.miataturbo.net/attachments/build-threads-57/181069d1501200429-konmos-1990-turbo-vvt-swap-20160921_004326.jpg)
Right away I started looking at getting it repaired. This happened at night, the next day I had already shipped it back to DIYAutotune for repairs. I also was trying to figure out why the ECU got fried. I started a thread over at mt.net and people started giving their 2 cents of what could've cause this. One of the persons said that it looked like their was too much voltage going to the ECU. Then asked if I was using the original VVT alternator, which I was. I hadn't run the extra wires from the ecu that were needed for alternator control and things started to make sense. I remembered that I had been taking a log during that drive so I opened up the log. Just like they suspected, the alternator had been overcharging my battery, which it ruined by the way. The voltage at the ECU had been slowly rising, right before the ECU got fried and the log stopped, the voltage was at 26 volts! I'm surprised it even ran for that long at such a high voltage.
#36
Junior Member
Thread Starter
iTrader: (2)
Join Date: Dec 2014
Location: Salinas, CA
Posts: 307
Total Cats: 23
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
I was pretty bummed out because I really wanted to take it to the yearly Miata event at MRLS. I had a little under a week before the event. I had an older MSPNP2 ECU that I had been using on my first miata. I knew that I could still run the car with it, but would have to do a few changes to the wiring and also I could not control VVT with it so I left it unplugged.
I got it up and running and I made it to the event the following weekend. It was worth it. There were lots of cool miatas there and I got a ride along on deviate, 949 racing's K swapped miata. Best of all, I was able to sign the 1 millionth miata :smile:
![Name: 20160930_175846.jpg
Views: 295
Size: 279.4 KB](https://www.miataturbo.net/attachments/build-threads-57/181055d1501200398-konmos-1990-turbo-vvt-swap-20160930_175846.jpg)
![Name: 20160930_175838.jpg
Views: 307
Size: 246.9 KB](https://www.miataturbo.net/attachments/build-threads-57/181056d1501200398-konmos-1990-turbo-vvt-swap-20160930_175838.jpg)
![Name: 20161001_134837.jpg
Views: 293
Size: 332.4 KB](https://www.miataturbo.net/attachments/build-threads-57/181057d1501200398-konmos-1990-turbo-vvt-swap-20161001_134837.jpg)
![Name: 20161001_135047.jpg
Views: 298
Size: 294.3 KB](https://www.miataturbo.net/attachments/build-threads-57/181058d1501200398-konmos-1990-turbo-vvt-swap-20161001_135047.jpg)
![Name: 20161001_154407.jpg
Views: 297
Size: 267.9 KB](https://www.miataturbo.net/attachments/build-threads-57/181059d1501200398-konmos-1990-turbo-vvt-swap-20161001_154407.jpg)
![Name: 20161001_154420.jpg
Views: 316
Size: 300.1 KB](https://www.miataturbo.net/attachments/build-threads-57/181060d1501200398-konmos-1990-turbo-vvt-swap-20161001_154420.jpg)
![Name: 20161001_160928.jpg
Views: 338
Size: 283.9 KB](https://www.miataturbo.net/attachments/build-threads-57/181061d1501200398-konmos-1990-turbo-vvt-swap-20161001_160928.jpg)
I got it up and running and I made it to the event the following weekend. It was worth it. There were lots of cool miatas there and I got a ride along on deviate, 949 racing's K swapped miata. Best of all, I was able to sign the 1 millionth miata :smile:
![Name: 20160930_175846.jpg
Views: 295
Size: 279.4 KB](https://www.miataturbo.net/attachments/build-threads-57/181055d1501200398-konmos-1990-turbo-vvt-swap-20160930_175846.jpg)
![Name: 20160930_175838.jpg
Views: 307
Size: 246.9 KB](https://www.miataturbo.net/attachments/build-threads-57/181056d1501200398-konmos-1990-turbo-vvt-swap-20160930_175838.jpg)
![Name: 20161001_134837.jpg
Views: 293
Size: 332.4 KB](https://www.miataturbo.net/attachments/build-threads-57/181057d1501200398-konmos-1990-turbo-vvt-swap-20161001_134837.jpg)
![Name: 20161001_135047.jpg
Views: 298
Size: 294.3 KB](https://www.miataturbo.net/attachments/build-threads-57/181058d1501200398-konmos-1990-turbo-vvt-swap-20161001_135047.jpg)
![Name: 20161001_154407.jpg
Views: 297
Size: 267.9 KB](https://www.miataturbo.net/attachments/build-threads-57/181059d1501200398-konmos-1990-turbo-vvt-swap-20161001_154407.jpg)
![Name: 20161001_154420.jpg
Views: 316
Size: 300.1 KB](https://www.miataturbo.net/attachments/build-threads-57/181060d1501200398-konmos-1990-turbo-vvt-swap-20161001_154420.jpg)
![Name: 20161001_160928.jpg
Views: 338
Size: 283.9 KB](https://www.miataturbo.net/attachments/build-threads-57/181061d1501200398-konmos-1990-turbo-vvt-swap-20161001_160928.jpg)
![Name: 20161001_163327.jpg
Views: 298
Size: 324.1 KB](https://www.miataturbo.net/attachments/build-threads-57/181062d1501200398-konmos-1990-turbo-vvt-swap-20161001_163327.jpg)
#38
Junior Member
Thread Starter
iTrader: (2)
Join Date: Dec 2014
Location: Salinas, CA
Posts: 307
Total Cats: 23
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
Again, the fun didn't last very long. I was only able to make it to the event on saturday, because soon after getting home that day this happened when the car slipped off the jack.
![Name: 20161002_110732.jpg
Views: 285
Size: 221.9 KB](https://www.miataturbo.net/attachments/build-threads-57/181050d1501200398-konmos-1990-turbo-vvt-swap-20161002_110732.jpg)
![Name: 20161002_110741.jpg
Views: 286
Size: 285.1 KB](https://www.miataturbo.net/attachments/build-threads-57/181051d1501200398-konmos-1990-turbo-vvt-swap-20161002_110741.jpg)
I was even more bummed out, first it was the ECU, now this. I started taking everything off again that night so I could pull the engine out again. Early Sunday morning, the engine was out once more.
![Name: 20161002_110713.jpg
Views: 305
Size: 352.8 KB](https://www.miataturbo.net/attachments/build-threads-57/181052d1501200398-konmos-1990-turbo-vvt-swap-20161002_110713.jpg)
![Name: 20161002_110732.jpg
Views: 285
Size: 221.9 KB](https://www.miataturbo.net/attachments/build-threads-57/181050d1501200398-konmos-1990-turbo-vvt-swap-20161002_110732.jpg)
![Name: 20161002_110741.jpg
Views: 286
Size: 285.1 KB](https://www.miataturbo.net/attachments/build-threads-57/181051d1501200398-konmos-1990-turbo-vvt-swap-20161002_110741.jpg)
I was even more bummed out, first it was the ECU, now this. I started taking everything off again that night so I could pull the engine out again. Early Sunday morning, the engine was out once more.
![Name: 20161002_110713.jpg
Views: 305
Size: 352.8 KB](https://www.miataturbo.net/attachments/build-threads-57/181052d1501200398-konmos-1990-turbo-vvt-swap-20161002_110713.jpg)
![Name: 20161002_110722.jpg
Views: 296
Size: 392.1 KB](https://www.miataturbo.net/attachments/build-threads-57/181053d1501200398-konmos-1990-turbo-vvt-swap-20161002_110722.jpg)
#40
Junior Member
Thread Starter
iTrader: (2)
Join Date: Dec 2014
Location: Salinas, CA
Posts: 307
Total Cats: 23
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
I put the engine back in that same day and bolted everything back up. Monday afternoon I had it all running once again. By this time I had already got back my MSPNP Pro from repair, so I swapped it back in and plugged in the VVT. This time I was using a 94-97 1.8 alternator since that once is self regulated and doesn't need any signals from the ECU to tell it to stop charging. I got it up and running on the newer megasquirt.