HONDA VTI TURBO (2020-04-20 08:02:06)

data upload in progress...

First Honda b16 engine with vems in hungary?

built for drag race

b16a2 engine

forged rods, pistons

darton sleeves

garett gt35 turbo

etc.

20200213_180706.jpg

20200220_180442.jpg

B16 engine has 3 VR trigger in the distributor. 24 - 4 - 1 teeth coil types.

20200305_164200.jpg

20200222_105048.jpg


PINOUT

INJ1 BROWN

INJ2 RED

INJ3 BLUE

INJ4 YELLOW

COIL1 yellow

COIL2 blue

COIL3 red

COIL4 brown

CRANK

CAM

TPS RED/BLUE

IAT RED/YELLOW

CLT red/white

FUEL P green/yellow

MIL green/orange

5v OUT yellow/red

FAN nincs

GND 5V yellow/black

VTEC solenoid green/yellow

GROUND black

15+

ckpp blue solid

ckpm white grey dot

tdcp solid green

tdcm red grey dot

cypp yellow

cypm black grey dot

iac blue/black

pcs red

icm1 yellow/green

gnd lg1 brown/black

gnd lg2 brown/black

12fix/vbu white/blue


oem pinout comment:

ACC - A/C relay

ACS - A/C switch

ALTC - Alternator relay, for control purposes, not present on all ECU?s

ALTF - Alternator switch

BKSW- Brake switch, for control purposes, not present on all ECU?s

CKP - Crankshaft position, (P)ulse or (M)ass, gives several pulses (~20?) during each cam shaft rotation

CYP - Cylinder position, (P)ulse or (M)ass, gives one pulse during each cam shaft rotation

DLC - Diagnostic connector, communication signal to the 3 wire connector next to the SCS connector

ECO - Unknown function (is there an ECO light on D15Z3?)

ECT - Engine coolant temperature

EGR - Exhaust gas recirculation

EGRL - Unknown function (probably related to EGR)

FANC - Fan relay, for control purposes, not present on all ECU?s

FLR - Fuel relay, 1 is always present, 2 can be ignored

IACV - Idle air control valve, controls the 2 wire type IACV valve

IAT - Intake air temperature

ICM - Ignition pulses, 1 is always present, 2 can be ignored

IGP - Battery feed, only active when key is turned

INJ - Injector, the number refers to the cylinder used (1 is on the side with the belts)

LG - Ground for battery circuit

MAP - Manifold absolute pressure

MIL - Motor indication light, this one gives the control engine light (CEL) signal

PCS - Control solenoid, this one is for the small black cylindric valve on the back of the IM

PG - Ground for battery circuit

PO2H - Primary oxygen sensor heater, connects with the ground of the car to activate the heater

PO2S - Primary oxygen sensor signal

SCS - Service connector switch, checks if the SCS connector is hot wired (for reading engine error codes)

SG - Ground for 5V circuit, 1 is for the MAP sensor, 2 is for the other sensors

STS - Starter switch

TDC - Top dead centre, (P)ulse or (M)ass, gives four pulses during each cam shaft rotation

TPS - Throttle position signal

VBU - Back up battery feed, always active (unless battery is removed)

VCC - 5V feed, 1 is for the MAP sensor, 2 is for the other sensors

VREF - Unknown function (probably related to wideband oxygen)

VSS - Vehicle speed sensor

VTM - Oil pressure switch, only -but not always- present on VTEC equiped vehicles

VTS - VTEC solenoid, only present on VTEC equiped vehicles


still under construction

testing now..


I have problem about trigger signals. I need help.

The iginition system converted to COP.

We have 3 signal on the camshaft/distributor (all of them coil types (VR)).

First wheel has 24 teeth (use this for primary signal)

Second wheel has 4 teeth (not in use)

Third wheel has 1 tooth (use this for secondary signal, cam sync)

In my theory, the ratio of crank and cam is 2:1. So we need to calculate the 24 teeth to 48 teeth for a full engine cycle.

But when I get the 48 teeth by cam, I get two secondary signal too...

trigger.jpg

http://www.vems.hu/files/tbiro/vti_turbo/v3.3_u014084-2020-03-13-17.09.18.triggerlog

http://www.vems.hu/files/tbiro/vti_turbo/v3.3_u014084-2020.03.18-17.38.29.vemscfg

Tried samples like 4cyl_c024, 4cyl_12+extra_Honda_K20AX_Camsync and others..

I got secondary trigger bad position or less primary trigger errors.


Hello,

I have reviewed your trigger log, this seems to be a normal c24+1 trigger arrangement.

In trigger settings visual enter the following settings:

If there are any issues, please upload a small vemslog of engine cranking and another trigger log so i can review.

Best regards, Dave


Thank you Dave, 24 teeth is only a half engine cycle, am I wrong? (Crank-cam ratio 2:1)

Yes you are wrong, the cam rotates once per cycle, so 24teeth on the cam is 24triggers per cycle. Gunni

Thank you, Dave & Gunni.

The engine runs now, tuning in progress. Tamas


The engine is running nicely but there is continuous trigger errors.

I haven't figured out the problem yet

TRIGLOG:

http://www.vems.hu/files/tbiro/vti_turbo/v3.3_u014084-2020-04-15-18.53.16.triggerlog

CONFIG:

http://www.vems.hu/files/tbiro/vti_turbo/v3.3_u014084-2020.04.15-20.36.59.vemscfg


Hello,

I have reviewed your triggerlog v3.3_u014084-2020-04-15-18.53.16.triggerlog and vemscfg v3.3_u014084-2020.04.15-20.36.59.vemscfg; there seems to be a race condition between your secondary and primary trigger (every alternate secondary tooth). To resolve this, please change the polarity of the secondary trigger wires (coming from your Honda dizzy) and take another triggerlog, please upload here and clearly name with "_polarity_sectrig_swapped" so i can easily compare.

Best regards,

Dave


Thanks Dave, Trigger errors gone!

Here's the new log: http://www.vems.hu/files/tbiro/vti_turbo/_polarity_sectrig_swapped_v3.3_u014084-2020-04-18-17.43.44.triggerlog

tbiro


at high rev, the engine start hesitate.

attached a log about is.

http://www.vems.hu/files/tbiro/vti_turbo/v3.3_u014084-2020.04.18-18.14.36.vemslog

I see some spikes in the rpm signal :(

tbiro


Hello Tbiro,

I have reviewed your triggerlog: _polarity_sectrig_swapped_v3.3_u014084-2020-04-18-17.43.44.triggerlog while the sectrig has moved a little bit it seems its still quite close to a primary trigger tooth. However i do not think that is your problem.

Looking at your vemslog you are running "tdc after the trigger" which way out of the recommended range (60-70deg). If your dizzy is in the stock/OEM position than i would recommend moving trigger tooth to 5 and adjusting tdc after trigger to 127-60 = 67.

After that confirm the engine timing with timing light.

Best regards,

Dave