Lambda sensor mounting

[Rich M]

Ade,
I've no experience with minis but I have done the same as you propose with a
2.0 pinto engined Escort and 1.8i Vauxhall Cavalier. I mounted in both cases
at the end of the manifold/downpipe (below floor level, using a heated Bosch
4-wire sensor. With the heater powered, the sensor operates right down to
idle, with the heater off, the sensor doesn't stay hot enough at idle but is
fine under driving conditions. The sensor I used was ex. Rover, and is the
same one used throughout the range of 'K' series engines and 'T'/'M' series.
(ie, 200's, 400's, 600T, 800 4-cyl.). Vauxhall use a very similar sensor on
Motronic (Bosch multipoint) systems; TBi (Multec) applications use a single
wire unheated Rochester sensor which needs to be close to the engine to work
properly.
Hope this helps.

Rich.

> Date: Sun, 16 Jan 2000 14:47:33 +0000
> From: Ade + Lamb Chop <alaw at mrc.soton.ac.uk>
> Subject: Lamda sensor mounting
>
> Hi,
>
> I am running a Mini with a highly tuned A series engine (100bhp from a
> 1.3litre). It has a carb and Distributer but I am thinking about adding a
> Lamda sensor with a dash mounted gauge so that I can Keep an eye on the
> mixture.
>
> Where in the exhaust system is the best place to mount the
> sensor? Close to
> the head? 6ft down the exhaust? I have a Long center branch exhaust
> manifold which doesn't bring the ports together for about 3ft after the
> cylinder head. The manifold is also new (and expensive) so I would prefur
> to mount is in the exhaust if it doesn't affect the reading.
>
> I plan to get a sensor from a car in a scrap yard are there any UK (comon)
> makes of cars that have better Lamda sensor than others?
>
> In the UK they recently banned Leaded petrol. They made Lead replacement
> petrol available to 'replace' it. Does LRP clog lamba sensors like Leaded
> petrol does? I can run Unleaded but LRP has Higher Octane rating than
> Unleaded and is cheaper than Super Unleaded.
>
> Thanks,
>
> Ade