Sunny1600 says Hi from the Netherlands with S12 GP

[sunny1600]

New tyres came in this week. Falken ZIEX 912

30/03/2011 Zeitronix AFR + gadgets

The last week I looked around for an AFR (Air Fuel Ratio) gauge. I PM-ed with some guys local that know alot of Nissans.

Finally decided to order some stuff from America. Why? With a wide-band I get a much better idea how my engine is running compared to a lambda-SR20 (narrow band). So I can see if the engine runs lean, too rich or good. The FJ20E has no lambda control and with this AFR the engine is well controlled.

So I bought an AFR with gauge.




This has become a Zeitronix, more precisely the ZT-2 with plenty of adjustment / reading possibilities.
The plans are to place an EGT (Exhaust Gas Temperature) gauge to be connected. This is something my S12 doesn't have yet. If you are going to tune it better to have a wideband and EGT sensor, this is the way you see what really happens. If you only have a wideband, you see only if the engine runs rich or lean. What you see is how hot or cold the exhaust and that is important, especially in turbo area. Keeping in mind the future plans, being a turbo on the FJ20, this is a logical choice.


I also have been thinking of a Apexi SAFC II. Skipped this plan quickly because the SAFC does not work on the current engine. This is because the FJ20E has no 0-5 volt throttle sensor. There is only open or closed and there are no intermediate steps. The Apexi has been referred to the fridge. Not as long as into the freezer for the project should not be that long.

What are the plans?

[b] [i] short term [/ i] [/ b]
Compression test and spark plugs replaced (The Nissan S12 workshop manual book
BPRS7ES BPRS6ES or-11-11).
Check the fuel pump and fuel pressure.

[b] [i] Slightly less short term [/ i] [/ b]
If the Zeitronix stuff arrives have that built in.

What do we monitor?
- Oil temperature
- Exhaust gas temperature
- Fuel pressure
- Water temperature
- AFR

And what have we finally bought?
? Zeitronix Zt-2 + LCD Display Bundle in Black
? Fluid Temperature Sensor (1/8th NPT) 2x
? 2x 1/8th NPT Bung
? Exhaust Gas Temperature Probe
? Pressure Sensor (150 PSI / 10 Bar)
? Oxygen Sensor Bung
? Zeitronix Decal