The Snot Rocket
My name is Simeon Veldstra. I built the seventh FreeEMS powered
ECU to run an engine.
The engine is a 1979 Volvo B21A. It is an inline four cylinder
with a single overhead cam crossflow head with two valves per
cylinder. It displaces 2.1 litres. The engine was fitted with a
SU side draft carburettor and a points and condensor ignition
system. The engine is supposed to produce 100hp in stock form.
The engine came with my 1979 Volvo 245, and is still installed in
it. One of the smaller cars on the road today, it seats seven and
you can close the tailgate on a refrigerator. It's a lot of fun
The EMS I built uses the Tech Arts card and a board I made by
hand. It's pretty ugly, but it works well, and was fairly easy to
I swapped the distributor for an adapter that drives a DSM Cam
Angle Sensor and added four coils from a GM LS1 V8. The car is
now running sequential ignition and likes it.
Once the ignition is all dialed in, the next phase will be
building a pressurized fuel system and swapping the carb for the
intake manifold and fuel rail from a 1989 Volvo 740. I will add a
board to the ECU, sandwich style, to control a JBPerf P&H board
to drive the injectors.
Waiting in the wings is a TD04-15G from a 1995 Volvo 850...
The ECU build thread is here:http://forum.diyefi.org/viewtopic.php?f=62&t=1263
Big thanks to Fred and Dave and Dan and Sean (and everyone else),
I'm standing on the shoulders of giants.
I'd like to thank B&D Auto Recycling in Oakville Ontario for
finding many parts for me, you guys are great!http://www.banddauto.com/
The Hackery in Vancouver BC provided a bunch of electronic stuff
as well, thanks guys!http://thehackery.ca
The debian project http://debian.org
runs my computers and
helped me understand the value of free software.
The folks at http://turbobricks.com
have been a source of good
knowledge and an endless waste of time.