Emissions tests for cars built in the 90's

[deezee]

The best thing to do when picking your engine, is referring to the IVA hand book. The test information varies against that given for checking MR2 imports during an MOT.

Ultimately, for the IVA, you need to prove your engine was produced before August 1995, to avoid the Cat test.

[brainbug007]

This is interesting, I thought if your donor had a cat you'd automatically have to fit a cat. Mine was made in 1993 (k plate) so hopefully it'll pass without one

[leroybrown911]

Excellent info and very topical at the minute.

Thanks
Leigh

[CTWV50]

I built a VW Corrado G60 engine pushing out 220whp with a 2.0 litre block (original was 1.8) and no CAT running digifant engine management. It used to fly through the 3.5% CO 1200ppm HC idle test. It always had 0.5% co and 200ppm apart from when the lambda signal wire had broken.

http://forums.vwvortex.com/showthrea...ne-build/page3

[brainbug007]

Came across this while digging, there's an excel link at the bottom for what I think is the contents of the emissions book. Unfortunately the cvh comes up as needing a cat as the co2 limit is 0.5%

http://www.dft.gov.uk/vosa/inservice...vehicles. htm

[Big Vern]

As suggested by DeeZee above it's what is in the IVA manual that matters.
So long as your haynes roadster is fitted with an engine from a pre August 1995 donor which the CVH is then no cat is required. The rules are different how ever for imports and rebuilt production cars.
The haynes roadster is not listed as no production haynes roadsters have ever existed and therefore no type approval emissions data submitted by the manufacturer.
No exact match means no cat required before Auig '95 - It's all in the IVA manual.

BV.

[brainbug007]

Ah I mis-interepeted it then, I thought it would be based on them matching the donor not the roadster