'Eric Wiklunds Volvo 142 Turbo'
This car shares a lot with Jonas car: MembersPage/MattiasSandgren/VolvoBtwenty
Basically the same engine configuration, only this one is turbo-charged.
- Stock B20 block
- 8-bolt crank
- stock pistons
- F cam (300 degree duration, 10 mm valve lift)
- head ported by Jens Gustavsson
- 3K K27 turbo (50 in/61 out)
- home made turbo adapter
- home made wastegate
- home made intercooler (from a large diesel truck)
- MSD/Holley 895 cc/min
- Low impedance 2.0 Ohm
- Fuel pressure 3 bar
- 55% duty cycle with lambda 0.8 @ 8000 rpm
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News
2006-10-23
The engine now has a rebuilt bottom-end and there must have been an incredible amount of blow-by on the old bottom-end because VE increased almost 20% at higher loads, with no other changes. The turbo is much more responsive too.
The injectors have been wired in series with a 6.8 Ohm 50W resistor for each injector and a transient protection diode (Zener) has been added to the flyback wire. The total opening time has increased for a given effective pulse width but the accuracy seems to have increased due to more effective flyback control.
There is still problems with EGT readings, I will look into that very soon as the car will go on to a dyno in a few weeks and then put into storage for the winter.
2006-06-11
The car ran 12.34 sec @ 174 km/h at the "local" dragstrip in PiteƄ, north of Sweden. A very nice result for such a simple setup. 110 kPa boost and very little tuning. [Movie here]
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Page about EGT trouble: MembersPage/MattiasSandgren/EricsVolvoTurbo/EGT
Genboard specific configuration
This is a v3.2 with production number 127.
Both triggers are configured for Hall.
Ignition outputs
| 00 | IGBT (Currently used to drive an MSD 6A) |
| 01 | IGBT |
| 02 | IGBT |
| 03 | IGBT |
| 04 | SDA (PD1) - on JP1 connector (current default for AntiLagSystem) |
| 05 | SCL (PD0) - on JP1 connector |
| 06 | IGBT |
| 07 | Ground for SCL and SDA |
EGT - both inputs are soldered in.
LCD and PS2 - are brought through a DSUB25 as described here : GenBoard/BuildProcedures/LCDconnect
MAP - MPX4250AP 250kPa=2.5 bar (1.5 bar boost) using a push-in connector in the front plate.
Injector driver flyback - GenBoard/Manual/PowerFlyback