X64v Posted October 18, 2009 Share Posted October 18, 2009 Holy crap, my new distributorless ignition system freaking works. I'll update my build thread once I wash the engine bay, but for now I had to post something in all this excitement. There are soo many places for things to go wrong: bad crimps, crisscrossed wires, crank sensor not reading the holes in the flywheel, MegaSquirt not reading the sensor or pattern right, etc. etc. etc. But it fired up and runs so smoothly. My set-up: MSnS-E 029y4 code, MSI V3.0 board Cherry GS100502 geartooth hall sensor 6-1 wheel pattern machined into flywheel Stealth/3000GT coil packs BIP373s bonded to the underside of the coil packs Modified NGK plug wires This thread has no technical purpose, just to share the joy of something I've been working on for a while (and had many failed attempts in the past) finally come together well. Quote Link to comment Share on other sites More sharing options...
woldson Posted October 18, 2009 Share Posted October 18, 2009 Congrats! Quote Link to comment Share on other sites More sharing options...
Xylemer Posted October 18, 2009 Share Posted October 18, 2009 I built a Megasquirt System using EDIS on a CA18DET, so I know how wonderful it is when everything comes together. I wanted to tell everyone. I think it is something to be proud of. Congratulations on your success, now comes the other fun part, Tuning! Quote Link to comment Share on other sites More sharing options...
280zx 2by2 Posted October 18, 2009 Share Posted October 18, 2009 I cant wait for this write up Quote Link to comment Share on other sites More sharing options...
big-phil Posted October 18, 2009 Share Posted October 18, 2009 hey that looks nice, running off the flywheel. Quote Link to comment Share on other sites More sharing options...
letitsnow Posted October 18, 2009 Share Posted October 18, 2009 That's pretty slick! I thought one of the complaints of a low tooth count wheel was timing inaccuracies, any comments? I think I'll have to look into this. Quote Link to comment Share on other sites More sharing options...
hughdogz Posted October 18, 2009 Share Posted October 18, 2009 Sean, you're ingenious! Quote Link to comment Share on other sites More sharing options...
rsicard Posted October 18, 2009 Share Posted October 18, 2009 Sean: Congrats on it coming together. Looking forward to further reports on the progress. Where can the NGK spark plug wire be purchased in Tucson? Please advise. Thanks. Quote Link to comment Share on other sites More sharing options...
X64v Posted October 18, 2009 Author Share Posted October 18, 2009 Thanks guys! I knew it would work in theory, but having it actually fire up and run is just the greatest feeling ever. I keep staring at the brass core plug in the timing cover while the engine's running, thinking, "Wow, there's no distributor there. And it's freaking running." This was cheap, too. Somewhere around $125 for everything. Including shipping, the major components were: Sensor ($35) - Digikey Coil Packs ($48) - eBay BIP373 x3 ($27) - DIYAutoTune I thought one of the complaints of a low tooth count wheel was timing inaccuracies, any comments? No official comment yet since I only first fired up this new shortblock + ignition set up last night around midnight. While fine-tuning the trigger angle at idle it bounced around a tiny bit but not much at all, far less than my locked VR dizzy. I'll let you know what it does holding at 3krpm, and then once the motor's broken in, holding around 6.5krpm (probably videos of both, too). Also, a trick I didn't show in my build thread was that I used the 4 IAC wires already in the DIYAutoTune harness. 3 for the coil outputs, one for +12v for the crank sensor. They have jumper pads right on the V3.0 board ready to go. Edit: Here's a quick comparison with MegaLogViewer. VR dizzy rpm signal on top (in yellow), new crank trigger rpm signal on bottom (still yellow). Similar RPMs, same scale (0-2500rpm). The VR signal was at cruise on the road, the crank trigger signal was at a free rev, so I bet it'll be even more steady on the road. Quote Link to comment Share on other sites More sharing options...
texis30O Posted October 20, 2009 Share Posted October 20, 2009 I have been looking at the electromotive systems and have been turned off by the HEAFTY pricetag..... This might be an option for me. Good job........ I have a Turbo Tom set-up so I am concerned when the boost turns on how the timing will adjust......( I am a tard when it comes to this stuff anyway) Quote Link to comment Share on other sites More sharing options...
PanzerAce Posted October 21, 2009 Share Posted October 21, 2009 So......any chance of a write up on this for those of us that are stuck in the early 70's with our electronics? Quote Link to comment Share on other sites More sharing options...
X64v Posted October 21, 2009 Author Share Posted October 21, 2009 I can definitely do a thorough write-up on the install. It'd be from the perspective of already having MS in the car running fuel only, or any other type of spark. I'll even be able to show how to make it work with the 240Z current-sensing tach, since mine is working great so far (yes, my original '73 is current-sensing, though it does not suffer from the rising needle at high ambient temps that the earlier tachs do). I've got about 85 miles on the motor so far and I've not had one tach spike, not one dropped spark, not one blip. Smooth as silk and dead consistent. Holding the motor at 3k rpm free rev, the crank pulley marks are rock solid under the timing light, no bounce I can see with my eye. There was a noticable +/- ~1.5° bounce in the dizzy set up (welded mech/vac advance, so it was all gear slop). I cannot wait to see the difference under full boost above 5k rpm. The rest of my set-up is almost identical power-wise to what it was before so it should be a decent comparison. Quote Link to comment Share on other sites More sharing options...
at-jefft Posted October 21, 2009 Share Posted October 21, 2009 I would enjoy the writeup. Nice work, go enjoy it. Quote Link to comment Share on other sites More sharing options...
blue72 Posted October 21, 2009 Share Posted October 21, 2009 Good job. Can't wait for the writeup and long term use verdict. Quote Link to comment Share on other sites More sharing options...
260DET Posted October 21, 2009 Share Posted October 21, 2009 Yery nice work and a simple but significant improvement, well done. Any reason why it was not done off the ring gear teeth? I'm told that if the number of teeth is evenly divisible by the number of cylinders then the ring gear can be used. I was going to do that off the VG's ring gear but its all chrome moly so that won't work. Then again I have an aftermarket ECU. Writeup would be great. Quote Link to comment Share on other sites More sharing options...
X64v Posted October 22, 2009 Author Share Posted October 22, 2009 Thanks for the compliments guys. I was seriously considering using the ring gear teeth (120 count so it works) but in the end it came down to being easier to drill holes in the flywheel than to drill/tap a mounting hole in the bell housing of the tranny. Plus, this had to be done on a weekend for free, so machine shop work or extra tools beyond what I had were not options. Looks like the demand for a write up is pretty high, so I'll make sure to document every single decision I made and every snag I hit. I have back-to-back exams tomorrow (I love college..) but it'll be written up this weekend for sure. Quote Link to comment Share on other sites More sharing options...
mikeatrpi Posted October 22, 2009 Share Posted October 22, 2009 Sean, you're a pretty smart dude for figuring all of this out and making it work. I hope you're able to use these experiences as resume-fodder, or at least talking points at the career fair and interviews as you prepare to leave college! Quote Link to comment Share on other sites More sharing options...
hoov100 Posted October 22, 2009 Share Posted October 22, 2009 how are the dimples going to affect the balance of the clutch and flywheel? Quote Link to comment Share on other sites More sharing options...
X64v Posted October 22, 2009 Author Share Posted October 22, 2009 I drilled a counterbalance hole, all should be sehr gut. See here. Quote Link to comment Share on other sites More sharing options...
X64v Posted April 19, 2010 Author Share Posted April 19, 2010 (edited) The write-up is in the MegaSquirt forum. http://forums.hybridz.org/index.php?/topic/90889-wasted-spark-ignition-no-edis/ Edited April 19, 2010 by X64v Quote Link to comment Share on other sites More sharing options...
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