Re: CIS or CIS-lambda? Questions

["Jonas K." <jkarlsso@metabolex.com>]

Well, IMHO, it depends on what you're after.

Seems to me that the PO went about repairing it in a half-assed manner,
using whatever parts were cheap/available from the junkyard, instead of
getting the right pieces. Or maybe he/she removed "all that emissions crap"
it the hopes of making the car faster.

By this time, there are plenty of CIS-lambda equipped VW's in the yards, and
for less than $200 you can be back to original spec. You don't need to do it
_now_ but might be worth your time to accumulate the parts.

Around here Junkyards charge:
$20 Fuel distributor (w/ freq valve)
$25 Exhaust manifold
$25 Intake manifold
$10 EGR valve
$15 vacuum amplifier
$15 misc tubes, vacuum canisters, etc

Get a new O2 sensor, universal single wire $35

OTOH, if you just want to repeat the PO's methods and go about the
"simplest" way to fix it, then you can keep it as is. The CIS-basic works
well and is a solid system. It does not have a way to self-adjust though, so
setting the mixture right is important. I'd recommend a A/F ratio gauge,
and/or an exhaust pyrometer. These will give you an indication of your fuel
mixture. These 2 gauges together cost ~$200 (for the autometer versions)

Part of the problem is that you're not sure of what exactly the PO did. And
you can't start thinking about performance until you know you have the right
fuel mixture.

HTH, 
Jonas




On 11/28/01 6:33 AM, "Marc Peterson" <mpeters6@rochester.rr.com> wrote:

> I have recently come to the conclusion that the PO of my 'roc was brain
> dead.  The car is an 81S, titled as such, but then the title also says 1.6,
> which is wrong.
> 
> I have nothing in the car related to the EGR system, including the vaccuum
> booster.  Its all been ripped out, and the exhaust manifold doesn't even
> have a port for it.
> 
> I also have the brain for the OX sensor, but no OX sensor and no frequency
> valve.   The fuel distributor must have been switched to a straight CIS one.
> 
> Is there any reason to recreate the Lambda system?  I don't have to do
> emissions here.  Any performance benifiets/drawbacks?
> 
> Also, in a straight CIS system, how do you measure the A/F ratio, do you
> need a exhaust gas anaylizer?
> 
> Thanks,
> Marc
> 
> 
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