E30 Zone

passed the MOT today and was worried about not having the cat on the car and this was my results.

CO 0.32 [%vol]
HC 119 [ppm vol]

=PASS

does this sound right ???
MOT man said that they were very low

Low for what? The limit for the car will be 3.5% so it will be low for that comparison.

for a car with no cat.
CATS do SWEET FA then going by that result

HAPPY DAYS

is that limit even for cars with a cat? cos he put it as a non-cat car on the tester

rich318i wrote:for a car with no cat.
CATS do SWEET FA then going by that result

HAPPY DAYS

is that limit even for cars with a cat? cos he put it as a non-cat car on the tester

the car is probably pre '91 so cat is not a mot requirement. the limit with a cat is much lower i think

randomspeedfreak wrote:

rich318i wrote:for a car with no cat.
CATS do SWEET FA then going by that result

HAPPY DAYS

is that limit even for cars with a cat? cos he put it as a non-cat car on the tester

the car is probably pre '91 so cat is not a mot requirement. the limit with a cat is much lower i think

If it's a M5x engine in an E30, it doesn't matter what age either the engine or car are. This specification doesn't appear in "the book", so it's tested at the older limits.

what's the limit on cars with cats fitted anyway ??

4.5% CO 1200ppm HC for pre 08/'86 E30s
3.5% CO 1200ppm HC for E30s from 09/86 to 07/'92
0.3% CO (0.2% fast idle) 200ppm HC for E30s from 08/'92 unless they have an engine from an earlier car, have an engine of indeterminate age (one without an engine number), have an engine that was never fitted to an E30 by BMW, or run on LPG, although LPG cars have been known to meet the stricter regs without a cat., even though they do not need to.

So, my 94 touring with m52 doesn't need cats - correct?

the car is still classed pre-cat so no need for a cat

like to know myself what the emissions limit is for a E36 328i standard

Baurluvva wrote:So, my 94 touring with m52 doesn't need cats - correct?

Correct. Only needs a cat. if it was fitted with a M40 or M20 engine that was built after 07/'92. Don't know about the M42 engine - E30s were built with it, but not E30 tourings.

So my 1.6 m40 has been binned, so it won't come under that class with my m52!

You're a star Mr mooooore !!

All in here: Section 7.3, page 9. http://www.motinfo.gov.uk/htdocs/m4i00000101.htm