I'm Automotive Engineering student from Finland.
I were developing four-cylinder BMW M10 2.0 '77 turbo engine as my engineering/diploma work, but I have changed my work to Honda D16Z6 SOHC-VTEC All-Motor project. Reasons for this are too high costs for a student, and I definately need a new (and ofcourse better and more powerful) engine to my daily driver Civic.
Pure AlphaN, WBO2 etc now working excellently! Engine runs damn smooth in ~any conditions, EGO correction works etc.
That AlphaN is very easy and straightforward to tune.
I also tried AlphaN blending first, but that doesn't work for NA engine with ITBs, it's only meant for smoothing idle with aggressive cams. config13 bit 2 has to be enabled via keyboard or config.txt to get AlphaN working! MegaTune doesn't have an option for changing it! I had some serious problems trying to get engine working without it first (and blending enabled in MT; It just doesn't work at all).
Check my MembersPage/JanneMantyla/PictureGallery ! WARNING! lots of high-quality pictures on same page!
A couple of project photos etc can be found here; http://rushi.kapsi.fi/pics/
VEMS-Related stuff (configs etc) http://rushi.kapsi.fi/vems/
Videos etc http://rushi.kapsi.fi/video/
D16Z6 Engine construction
- Bore 75mm, stroke 90mm
- Honda PM7 high dome pistons, 12:1 compression ratio
- ARP head studs, rod- and pressure plate bolts
- Reshaped/undercut stock valves (30/26mm), head ported by me [see results here]. Not bad, should be enough for 200hp goal.
- [Crower Stage 3] cam, Crower valvesprings and Ti-retainers
- 42mm ITB setup. Honda CBR954RR throttlebodies and injectors (hi-z), my own designed/made aluminum manifold. Intake total lenght 230mm.
- My own design 4-1 anti-reversion header(lenght 660mm/26", merged collector), 2.5" exhaust.
- ACT XTSS clutch Xtreme pressure plate, performance organic disc
- ACT [XACT Prolite] 3,8kg / 8.4lbs flywheel
![[see results here]](http://personal.inet.fi/surf/rushi/z6flow.jpg){kind=link}
![[XACT Prolite]](http://personal.inet.fi/surf/rushi/flywheel1.jpg){kind=link}
D16Z6 sensors etc
- Original Denso IAT/CLT sensors (values equals Bosch)
- Original TPS and MAP. MAP seems to be 180kPa type (I've ~1kPa ofset) and is working perfectly.
- Maybe VAG 1.8t 20V active COPs. These are cheap, and suits fine to Honda head. Another alternative could be CBR600 F4i passive COPs. Bosch wastedspark is powerful, but not as sophisticated, and needs ignition wires as expensive as VAG COPs.
- Honeywell 1GT101DC Hall-sensor at crank. One trigger pulse/event.
- Propably some camtrigger. Needs a little bit more research with mounting, I want Hall sensor. ATM I'm driving with old D15 dizzy.
- VTEC relay output. I think I'll use one MiscOut for this. Honda PGM-FI uses rpm, tps/map and clt as a parameters for this function, seems that I can't get clt but who cares, just remember not to use VTEC (rev past 5krpm) with cold engine (stupid anyway). Will be applied very soon.
- Bosch LSU-4 WideBand sensor
- Blue 4x20 LCD
- EGT K-type thermocouple
Current firmware version; 1.0.38
Questions and answers
Q: I'm trying to drive VTEC-solenoid (it needs positive supply, and has R of 16ohms) from stepper driver IC, because it seems to be able to supply 1A. Somehow I'm not able to get it working; I use MiscOutput1 for it(S259 Q3 = stepper_A, right?). AFAIK when that is activated, output should go to +12V, but that doesn't seem to work.
- what do you mean by "does not work" ?
- Measure voltage
- measure current if possible
- try to activate with mdh.. command (disable the output during this experiment)
I ment that activating S259 Q3 didn't give ~Vbatt or anything else into it's output pin. I was correct, that IC needs to be enabled separately (S259 Q7).
Now it works perfect on VEMS-side, I use RPM actuation for enabling(Q7) and MiscOut1 for VTEC control. This works now just like it should, gives good drive to solenoid. I still have some problems retated to solenoid(mechanical) or oil pressure.
Q: Is there any better way to enable stepper ic, than waste rpm-actuation for it? From software, hardwiring +5V to IC would be easy too.