Catalytic Help

[Hunterjames]

Hi all

Im restoring an old Hillman hunter with a 1725cc engine but need to replace the old nackerd exhaust. Im not sure however if using the catalytic converter or a 2ltr or more engine exhaust would make it any less polluting so the tax would be lower and the engine would breath better, or would the increase in size just be a disadvantage?

Any help is much appreciated
Ta, Hunterjames

[TheEnd]

Did it have a cat?

It won't affect tax, you'll always be on the 2 tier old system anyway, based on engine size, and you can get away with murder with emissions.

[stevieturbo]

What age is the car ? Pre '73 should be free tax anyway

[Hunterjames]

The cars a 76 so im out of the tax exempt tier and the 2010 tax system seems to just go off emissions so the lower the better?

[TheEnd]

You won't be part of the 2010 emissions based taxes, you'll stick on the circa 190 quid one

[Hunterjames]

ahh cool
thanks for all the help.

Hunterjames

[2woody]

in order for the cat to function at all, you'd need to have a post-1994-spec fuel injection system on the vehicle, and possibly some engine mods made - budget £3500 for this.

It is possible to get a CO2 per km figure added to your car's DVLA file, but you'd need to send them a "proper" emissions EU Directive test report, available for around £5000

excepting the above, it wouldn't really be a good idea, as the CO2-based road tax is much more likely to increase than one for the car's true age ( blame the Government for that one )

Actually, blame the Government for insisting on the EU Directive as well

..... and for instilling the view that "cats with everything" is a good idea......

( rant over )

[Hunterjames]

2woody said:

in order for the cat to function at all, you'd need to have a post-1994-spec fuel injection system on the vehicle, and possibly some engine mods made - budget £3500 for this.

It is possible to get a CO2 per km figure added to your car's DVLA file, but you'd need to send them a "proper" emissions EU Directive test report, available for around £5000

excepting the above, it wouldn't really be a good idea, as the CO2-based road tax is much more likely to increase than one for the car's true age ( blame the Government for that one )

Actually, blame the Government for insisting on the EU Directive as well

..... and for instilling the view that "cats with everything" is a good idea......

( rant over )

Thanks 2woody, Ill just not bother with a cat for now seeing as the £3500 budget you recommended is way to much. Silly government and their crappy ideas.
ahh well, ill just not have to be so tight and pay the damn tax ha

thanks, Hunterjames

[Mr2Mike]

Hunterjames said:

Thanks 2woody, Ill just not bother with a cat for now seeing as the £3500 budget you recommended is way to much.

It could be done for substantially less than this, depending on your skills and time budget.