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Construction & Use Regs (For Older Cars)
scootz - 1/3/09 at 07:23 PM

I'm planning to put a 1969 car on the road.

Anyone know what the silencer requirements are for that era? I.e. are there any???

Also, assuming I put a modern engine into it - how does that affect it's emissions requirements or road-tax exemptions?

[Edited on 1/3/09 by scootz]


speedyxjs - 1/3/09 at 07:27 PM

Putting a new engine in an old car doesnt change the tax exemption iirc.


maskedavenger - 1/3/09 at 08:00 PM

^^^^^^^^^^^yet


mr henderson - 1/3/09 at 08:05 PM

Will this car be 'substantially altered from the original specification'?

If yes, then theoretically it will need an SVA.

Problem is, who decides what 'substantially altered from the original specification' means

Answer, not you.

You need to give this a really good looking into. The goal posts are moving all the time.

John


rpm - 1/3/09 at 08:07 PM

i'm putting a 1971 spitfire back on the road with a 2.0 redtop engine in it. it's already registered with that engine and as a historic vehicle, so, no tax and only visible smoke check at the mot


scootz - 1/3/09 at 08:20 PM

Just an engine change Mr H... whether or not that constitutes 'substantially altered from the original specification', I dunno...

Will speak to DVLA (if I can get someone to answer the phone!) and see what they say.


maskedavenger - 1/3/09 at 08:28 PM

there is a points system the dvla use its on there site takes a bit of searching
but like most things it is down to diffrent interpritation
i currantly have a 1972 hillman avenger with a 2,0 zetec on bike carbs (sooon to be motec and tb)
which is still tax free
check out the dvla site ill try and find it and post a link


scootz - 1/3/09 at 08:32 PM

Just had a quick flick through the regs and my interpretation is that an engine change (only) does not necessitate SVA.


maskedavenger - 1/3/09 at 08:32 PM

these guys have a lot of info http://www.the-ace.org.uk/
dvla link
http://direct.gov.uk/en/Motoring/BuyingAndSellingAVehicle/RegisteringAVehicle/DG_10014199

[Edited on 1/3/09 by maskedavenger]


mr henderson - 1/3/09 at 08:34 PM

quote:
Originally posted by scootz
Just an engine change Mr H... whether or not that constitutes 'substantially altered from the original specification', I dunno...




And a gearbox, I expect (it all counts), plus the chassis will need to be altered to provide different mounts for both items.

How about the rear axle? First time you dump the clutch, will the teeth be stripped from the crownwheel? driveshafts splines alright?

Not trying to pi$$ on any parades here, but these are all things that need to be considered

John


maskedavenger - 1/3/09 at 08:39 PM

it starts getting scetchy the more you do, for example replacement shock absorbers or steering rack have been used ie for genral vehicle maintanance rather than modification some vosa bods count that into the points some dont but if you put a modern in wont you be upgrading the brakes and suspension to cope


scootz - 1/3/09 at 08:42 PM

This should nail it...

From Government website -

The vehicle must score eight or more points to retain the original registration mark. If less than eight points are scored or a second-hand or modified chassis or altered monocoque bodyshell is used, an enhanced single vehicle approval (ESVA), single vehicle approval (SVA) or motorcycle single vehicle approval (MSVA) certificate will be required to register the vehicle. A 'Q' prefix registration number will be allocated.

Scoring components:
The following values will be allocated to the major components used:

chassis or body shell (body and chassis as one unit - monocoque ie direct replacement from the manufacturer) (original or new) = 5 points
suspension = 2 points
axles = 2 points
transmission = 2 points
steering assembly = 2 points
engine = 1 point

Where there is evidence that two vehicles have been welded together to form one (ie 'cut and shut' a 'Q' mark will be allocated. ESVA, SVA or MSVA will be required.


24vseven - 1/3/09 at 09:20 PM

so what about a rally car from a grp4 escort to wrc car every component is changed but the dont require any inspection or even mot in the case of a new wrc car


wilkingj - 1/3/09 at 11:45 PM

Watch out for those little words... Original spec chassis, and the word UNMODIFIED / UNALTERED.

I would be very careful about talking to the DVLA, they cant even agree on registering a kit car.


scootz - 2/3/09 at 09:50 AM

No-where in the regs does it say 'original spec chassis', or 'unaltered'.

Just 'original chassis'... which it is!


mr henderson - 2/3/09 at 10:03 AM

quote:
Originally posted by scootz


Just 'original chassis'... which it is!


The problem is going to be, who is going to interpret the rules, you or them?

You are going to have to alter the chassis to provide the different engine and gearbox mounts required, at the very least. To mount a V8 engine in a chassis originally designed for a straight 6 (? I'm not sure if you've said what the engine is yet, 2.5 Triumph?) you will be quite lucky if that is all you need to do.

What about the rear axle? Will the current unit (TR6?) be strong enough?

John


FEZ1025 - 7/3/09 at 11:05 AM

This is an interesting reply where we are discussing the similar thing on the mini forum

quote:

I rang my local dvla today and told them about the mini conversion and they said my mini was not radically altered ? so i asked her what do you call radically altered ? to which she replied if i was to make it a 4 door from a 2 door or 4 wheel to six wheel, long wheel base to short wheel base, because the physical appearance is not altered in any way she said it dont matter if your engine is in the front or the back, front wheel drive or rear wheel as long as i put the correct cc and engine number. Obviously this is her interpretation of the rules so after our chat i then told her i dont believe you can i have further proof of what your saying so she gave me an email of the Vehicle technical standards and engineering department 'tts.enquiries@dft.gsi.gov.uk' and apparently if i email these people with the description of the car they will make it a bit more black and white for me. i personally cant be bothered but if anyone else does then by all means give it a go and let us know what happens.



The whole of the thread can be found

HERE

for those who may wish to read the context.

Alan...