UTERUS Posted July 26, 2015 Share Posted July 26, 2015 shit dude, just asking the questions. do you know how many times an issue is something really small. ive never actually had a car break down due to a major failure, its always been something little like that. that really fucked me off, but im trying really hard to withhold snarky comments. You really should have held your tongue here, grasshopper. 2 Quote Link to comment Share on other sites More sharing options...
Dell'orto Posted July 26, 2015 Share Posted July 26, 2015 NaN. Will leave Zac's thread in peace 2 Quote Link to comment Share on other sites More sharing options...
kicker Posted July 26, 2015 Share Posted July 26, 2015 Background for people //oldschool.co.nz/index.php?/topic/35766-dellortos-unreliable-modern-piece/ Quote Link to comment Share on other sites More sharing options...
ProZac Posted July 26, 2015 Author Share Posted July 26, 2015 OMGs IMTERWEBS DRAMA! Where's my POPCORN!? . 3 Quote Link to comment Share on other sites More sharing options...
Beaver Posted July 26, 2015 Share Posted July 26, 2015 Behave girlies. Let Zac fix the bloody thing alright! Quote Link to comment Share on other sites More sharing options...
ProZac Posted July 27, 2015 Author Share Posted July 27, 2015 Oh, you're giving me far too much credit! So far Brad's hypothesis that the car is cursed by a dread demon of the lower nine hells is proving accurate. I have naughty NAUGHTY thoughts of excising said demon with link ecu's and single turbo conversions..... Has anyone ever seen an aftermarket ecu setup that correctly ran the sequential twin turbo system? Not a Power-FC mind you. 1 Quote Link to comment Share on other sites More sharing options...
thegreatestben Posted July 27, 2015 Share Posted July 27, 2015 I would sooner have a non stock car that runs really good than a stock as a rock car that goes as well as a rock too. 3 Quote Link to comment Share on other sites More sharing options...
yoeddynz Posted July 27, 2015 Share Posted July 27, 2015 Oh, you're giving me far too much credit! So far Brad's hypothesis that the car is cursed by a dread demon of the lower nine hells is proving accurate. I have naughty NAUGHTY thoughts of excising said demon with my own home made ECU because that is what I am all about and single turbo conversions..... Quote Link to comment Share on other sites More sharing options...
ProZac Posted July 27, 2015 Author Share Posted July 27, 2015 Megasquirt you say? It's playing on my mind.... I tried checking the timing yesterday with Laura cranking it over for me. Couldn't get the timing light to trigger from the ignition lead. Could be because of the plugs being too fucked, but I had taken them out and cleaned them just before. I'm pretty sure there is a pretty simple modification that can be done to the Optilux timing lights to make them trigger off a low level signal. I'll try and figure it out and them hook directly into the ignitor signal. Quote Link to comment Share on other sites More sharing options...
Stu Posted July 27, 2015 Share Posted July 27, 2015 They should trigger from a low level drive already - my Optilux one does. Quote Link to comment Share on other sites More sharing options...
N3K Posted July 27, 2015 Share Posted July 27, 2015 The complexity of this problem man. Mind blown. Reminds me why I drive an escort. 4 Quote Link to comment Share on other sites More sharing options...
ProZac Posted July 27, 2015 Author Share Posted July 27, 2015 They should trigger from a low level drive already - my Optilux one does. Brilliant, good to know, will sort that out over the next couple of days . Quote Link to comment Share on other sites More sharing options...
mjrstar Posted July 27, 2015 Share Posted July 27, 2015 doesn't new fuel and a tow start fix all rotary problems? Have you one a compression test? (sorry if I have missed compreesion numbers) 3 Quote Link to comment Share on other sites More sharing options...
ProZac Posted July 27, 2015 Author Share Posted July 27, 2015 Nah, not yet. My compression tester is old and fucked. I've ordered a solid state electronic 150psi pressure sensor from China (Cheap cheap aliexpress special) so I can get a good reading on what the compression is doing. Will just read the value on my scope for now once it arrives, but might make up a proper interface box so people can have a decent cheap rotary compression tester. Quote Link to comment Share on other sites More sharing options...
yoeddynz Posted July 27, 2015 Share Posted July 27, 2015 If you make a decent little tester that separates all 3 pulses accurately at a sensible price you'll sell them no worries. Monies in your wallet for petrol (which you will need....) 1 Quote Link to comment Share on other sites More sharing options...
puddles Posted July 27, 2015 Share Posted July 27, 2015 Oh, you're giving me far too much credit! So far Brad's hypothesis that the car is cursed by a dread demon of the lower nine hells is proving accurate. I have naughty NAUGHTY thoughts of excising said demon with link ecu's and single turbo conversions..... Has anyone ever seen an aftermarket ecu setup that correctly ran the sequential twin turbo system? Not a Power-FC mind you. it kind of defeats the purpose of an aftermarket ecu, if you make it run the sequential twins. The factory ecu does a good enough job for that. Aftermarket ecus suit single turbo conversions. Turbos have come a long way since the nineties and the stock twins really belong in the bin. That said i really like the apexi power fc as it is so simple. The motor will run on one rotor, it'll sound like shit, but it will run. seriously just grap a regular compression tester, pull the valve out and watch the bounces. i've used the official mazda nz tester and it isn't that much better. it is easy to unplug the entire engine harness from the ecu and pull the whole thing out, including firewall grommet. I stripped one down to bare wires on sunday, it took about an hour. you will be able to see the harness and any broken wires. all this is assuming you've checked the basics obviously. 2 Quote Link to comment Share on other sites More sharing options...
ProZac Posted July 27, 2015 Author Share Posted July 27, 2015 Once again puddles, excellent info. I was wondering how integrated to the body looms the ECU looms were in these cars, glad to hear it wouldn't be a major major to whip it out and tidy it up. My normal compression tester is fucked, and making a rotary one will be a fun little side project, but If I strike issues I'll just go get another regular one and do as you have said. Grabbed a new set of non-platinum (therefore cheaper) plugs this arvo, will have another play tomorrow morning. I hear what you're saying about turbo tech, I assume with how these engines are configured, they'd respond to a split pulse exhaust housing pretty well? Quote Link to comment Share on other sites More sharing options...
maxted Posted July 27, 2015 Share Posted July 27, 2015 i had a aftermarket ecu in my old series 7 and it ran sequential twin turbos fine….... but it was a power fc. just plug in and go but they change between series 6 and 7 with different plugs i believe. these megasquirts sound like pretty cool bit of kit and be awesome putting it together yourself Quote Link to comment Share on other sites More sharing options...
ProZac Posted July 29, 2015 Author Share Posted July 29, 2015 AliExpress 100 and 150 psi pressure sensors arrived. Was pleasantly surprised by the quality feel. Back to back tested them against a $200 genuine honeywell unit, and they were only out by 4kPa max (0.5% of full scale), which is plenty accurate enough for my needs! Will get an adapter to m14x1.25 sorted and get a compression reading ASAP, hopefully I'll find some time over the weekend. 1 Quote Link to comment Share on other sites More sharing options...
ProZac Posted July 31, 2015 Author Share Posted July 31, 2015 One rotary compression tester adapter: I cut away the crimp just above the sparkplug hex, and then tapped the porcelain out with a drift. Came out really easily. Spun up a bit of bar to sit in where the porcelain has been, tapped it for 1/8NPT, and welded it in place. Screwed the sensor in with some thread tape, and it's a good-un. The supporting gear needed to actually get anything useful out of the sensor: If I find time I'll make up a simple little box with a display to give the readings, but this lets me get on with fixing this car for the moment . Front rotor: Rear rotor: They look all good. The sensor measures 0-150PSI (not sure if gauge pressure, or absolute), outputting 0.5-4.5V. Working this back, the front rotor is showing ~130psi, and the rear rotor is showing ~140psi (subtract 15psi from each of these if it turns out the pressure sensor measures absolute pressure). The peak figures don'y really matter though, outside of the fact that they're all pretty even. I forgot to open the throttle when testing anyway, so they're not really accurate. What is good though, is that all the peaks are pretty even, meaning the motor seems to be sealing well. Fuel pressure testing next! [EDIT] - I didn't work out those compression number correctly. I have confirmed that the sensor measures gauge pressure, but didn't take the 0.5V offset they have into account (they output between 0.5 and 4.5V, not 0-4V. This gives peak compression values of 112psi for the front housing, and 123psi for the rear housing. Sounds much more reasonable . 9 Quote Link to comment Share on other sites More sharing options...
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