Can anyone tell me what the manufacturing cut-off date is for engines to need a catalytic converter?

Cheers

Nick

I think it is not the case of needing a cat, but more to do with stringent emissions tests. After a specific manufacture date (1st August 97?) engines are tested to more stringent standard. You are unlikely to pass this test without a cat, although I believe it can be done.

Sorry if this isn't much help. Do a search for emissions and you might find the answer you are after.

In simple terms, the emissions must meet those applicable when the engine was new. The SVA test draws the line at August 1995.

If the engine is younger (ie post ’95) it will be tested to ensure it produces less than 0.5% CO and 200ppm HC, whereas older engines are allowed 3.5% and 1200ppm HC

Whoops... August '95 not '97. Didn't think that sounded quite right!

So is 01/08/95 the cut-off date?

Cheers

Nick

1-08-95 = august 95 so yes it is the cut off date

I thought it also depended on whether the original engine had a cat fitted to it in it's donor.
I know that the K series engines of around 1991 had both non and cat exhausts. Single point injection cars did not have cat, but multipoint injection cars did.

Not a great deal of use though.

No at the moment it is "95 cut off date for the engine and not the donor. The rules don't seem to tie kit cars down too much and don't cover engines being removed from the original cars.

they go by the engine normally to get below the emmisions required for post aug 95 you will need a cat if you can get below without then you don't need the cat but you carn't normally achive this