----- Original Message -----
Sent: Friday, August 06, 2004 6:55
AM
Subject: RE: Cheap Air/Fuel ratio meter
and sensor for L-series
I
built the $20 kit and it's pretty crappy. Not only could it sense the o2
reading, It seemed to also be able to sense when my hand was near the circuit
board, or the wire running to the o2 sensor.....
Use
it as a guide only!!!!
All
these o2 meters do is measure the voltage produced by the sensor, the sensor
has a platinum rod inside which produces a voltage when hot and will give off
between 0 and 1 volt depending on how much oxygen is present. Ideal o2
conditions are around 0.7 volts. They can only detect a very narrow range,
like 11:1 thru to 15:1 or something. A typical car unit is around $80 to $150
brand new.
If
you want accurate results, you need a wide-band o2 sensor like they use on the
real o2 tuning meters, the wide-band sensor can detect a larger range of
readings and is far more accurate. These cost a hell of a lot more than the
narrow band type. Don't quote me but I think they are $400 to $700 just for
the sensor.
hi, might pay to get a 3
wire ego sensor from a ea falcon , the heating element will make
the actaul sensor. start reading better,sooner, than waiting for the exh to
bring it up to operating specs.
the a/f meter from jaycar cost about 70
$??
there is another kit from jaycar for about $20
or soo, which just has a row of leds...
btw has any body looked at the latest
jaycar catalog ?
look at catalog
numbers:
bs-5080
kc-5382
kc-5380
kc-5385
kc-5387
kc-5386
kc-5384
kc-5375
they are a heap o f electronic kits
for efi cars....
thing is , i actually ordered the book, but
they said the book wont be ready till september (even though its
advertsied in this year s catalog.
theres some really interesting kits,
boost controller etc...
mark k
----- Original Message -----
Sent: Thursday, August 05, 2004 8:43
PM
Subject: Re: Cheap Air/Fuel ratio
meter and sensor for L-series
Good idea! I've had similar thought for the
same reason(s).
Keep us informed how you go building and
installing it, and how it works if you succeed.
I have read that the o2 sensor in the Hyundai
Excell with the twin cam head is a high quality unit for sensing.
Could be a good deal from a wrecker.
Others may add their knowledge on
this.
----- Original Message -----
Sent: Thursday, August 05, 2004
7:02 PM
Subject: Cheap Air/Fuel ratio meter
and sensor for L-series
Hi all,
I want to set up my L4 powered 1600 with a
cheap O2 sensor and A/F ratio meter.
Is there anything I need to know? I see
heaps of cheap O2 sensors on Ebay, brand new starting at around
AUS$30-$40. There is a Bosch #11051 (OE type before catalyst single
wire) O2 sensor listed as suitable for an L-series 4-cylinder. Are these
any good? I'm just running twin SU's on one car with an L18 and
twin Weber 45's on another with a L20B and want to swap between them for
tuning. I thought I'd just get a Jaycar LED A/F meter kit and DIY
it.
I should be able to put the whole thing
together for less than $150 I reckon.
Any thoughts?
Cheers,
Rob
P
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