Volvo 244 -82
4 cyl, 16v, B234 block filled and O-ringed, forged pistons from ford probe 2.3L, forged H-profile rods, A cheap Super T70 turbo with Semi ballbearings, 60.5mm compressor inlet, 0.84 exhaust,
WB lamda, GM 3bar map sensor, 4*960cc injectors, 44mm wastgate, own manifold, own exhaust manifold, lage truck intercooler and
VEMS v3.1 board with serial number: 1st bord: 87 (2nd 99)
BMW 535 (getrag 260) gearbox converted to fit volvo.
Page TODO
Keep a clean page!
Current working on
Engine running! not well but, it starts.
runns very rich and nothing happens when I try adjust. Low spark power? engine keeps "blurring" and its hardly possible to change anything!
When I check with timing light it seems ok... cyl 1+4 at +20 deg cyl 2+3 on the other side somewhere...
maybe it could be something with config:trigger_tooth 00 is this wrong.. To get any reaction at first I had to switch cyl. 2+3 at coil to 1+4, that cant be ok!!!
- Another srange thing is the WB-lamda or when I connect it, then all the injectors starts to pulsing, when engine is off! (ignition on)This happens with both of my v3.1 cards, any clues? //Robin
Q: Which tuning program are you using?
If it is megatune with vemsv3.ini-file.. This isn't working correctly.. I compiled firmware with MSNS option, and used latest megatune configured for MSNS. The problem i had with vemsv3.ini was that changing the VE-table in megatune didn't touch the table on the genboard. ignition table worked. //Emil
''A: I primarly edit by display/KB, but I have also made some changes by using MT with vemsv3.ini, sometims it works...
It would be easier if the car was here and not in my brothers garage. //Robin
Valued tip
Back to tabletests: apply lightbulbs or LEDs on outputs, and see OnlineCourse/OffEngineTesting mst63 msp01 (or up to msp7E for lowest RPM) can be used to generate stimulator-output on (stolen) config.act_wot_channel output that can be fed back to self (primary trigger) or to another board - with a series cap if LM1815 is used.
Trigger wheel
Bosch VR sensor (jetronic), 36-1, mounted at crank.
Trigger wheel is a castiron, 36-1 with a teethwide of 4mm->4.5deg and 5mm~>5.5deg jumps, missing tooth 14mm~>15.5deg
Yes, its working! I Connected pin1 to gnd and pin2 to avr and cranked, RPM shows ~170
Trigger signal
Current status:
- Sensor is magnetic at the top
- AVR sees signal!
- J1 and J6 shorted
A 10uF series cap is needed so the DC signal at the LM1815 falls below 0V. Grounding the pin5 of LM1815 (switching off adaptive hysteresys mode) might be needed too.
Fuel setup
| cyl | inj | EC36pin # | h[0] # |
| 1 | A | 7 | 01 |
| 2 | F | 18 | 20 |
| 3 | G | 6 | 40 |
| 4 | H | 17 | 80 |
h[0]=80 40 20 01 00 00 00 00
h[1]=00 00 00 00 00 00 00 00 <- currently not used, during cranking the fets are fired in the 'normal' h[0] sequence - DB
Cutout From Config
req_fuel=28
divider=01
alternate=03
injopen=41
battfac=28
kpafac=88
kpaofs=64
injocfuel=00
injrampup_battfac=FF
injpwm=0B
injpwmt=B8
injpwm6=0B
rpmk[0]=0B
rpmk[1]=B8
tpsdot_kpadot_conf=01
tpsdotrate[0]=05
tpsdotrate[1]=14
tpsdotrate[2]=28
tpsdotrate[3]=4D
tpsaq[0]=14
tpsaq[1]=28
tpsaq[2]=50
tpsaq[3]=6E
tps_thresh=CC
tpsasync=0A
acmult=64
tpsacold=14
tpsdq=64
decel_fuelcut_thres=0F
overrun_fuelcut=11
overrun_fuelresume=10
Ignition setup
2 ign banks, firering a Ford dual coil with 4 outputs (Wastefire)
| cyl | Driver | EC36pin # | h[2] # |
| 1+4 | 06 | 24 | 06 |
| 2+3 | 05 | 12 | 05 |
h[2]=00 00 00 00 06 05 06 05 is this right?
cyl1+4 are the first to fire after the detection of the missing tooth, if not swap the order in h[2] of 06/05
Cutout From Config updated 2005-01-05
primary_trigger=01
secondary_trigger=FF
tooth_wheel=23
trigger_tooth=B4 I dont get what you mean, 180 => hex b4 here to?
another_trigger_tooth=12
crank_minper=50
tooth_wheel_twidth1=04 Shall this not be 0A? (10deg dec.) //Samuel A: 360/(4*36 + 5*36)=1.11 deg/mm 4*1.11=4.44deg~> hex 04 //Robin
tooth_wheel_twidth2=0F And this 14? (20deg dec.) //Samuel A: 360/(4*36 + 5*36)=1.11 deg/mm (5+5+4)*1.11=15.5 -> hex 0F //Robin
cam_sync_r_edge_phase=FF
cam_sync_f_edge_phase=FF
reset_engphase_after=FF
ign_tdcdelay=B4 'trigger is moved to 90 deg before tdc!
ign_dwell14=26
ign_dwell6=5A
ign_crank_advance=50
ign_out=70
ignchmax=03
engine_off_delay=08
pump_on_mintime=0F
fuelpump_channel=57
inj_stage2_rate=FF
inj_stage2_start_tps=FF
inj_stage2_start_map=FF
als_lowrpm=FF
als_maxtps=FF
als_ignretard=FF
als_rich=FF
Updated 2005-01-05
My tables
http://www.vems.hu/files/RobinJohansson/tables.txt
My config
http://www.vems.hu/files/RobinJohansson/config.txt
My V3.1 board:
