MOT exemption exempted . . .

[bricol]

On the trials car I had, if the regs allowed it, I used to run on 5psi on sections.

Lowest I've gone was 2psi - and was the first one to clear that section on that event. Had to take the tyres off after the event to clear all the crap out of the bead though - wouldn't stay inflated.

Club night trials I've had to run at 34 psi. Which isn't good practice for national or classic events that run lower pressures.

 

[tigdlo]

2018

Engine​

Alternative cubic capacities of the same basic engine and alternative original equipment engines are not considered to be a substantial change.


If the number of cylinders in an engine is different from the original it’s likely to be, but not necessarily, the case that the current engine is not alternative original equipment.

2026

If parts no longer available​

Changes made to preserve a vehicle where original‑type parts are no longer reasonably available are acceptable. This includes changes to:

• axles or running gear to improve efficiency, safety or environmental performance
• the chassis – replacements of the same pattern as the original
• a monocoque bodyshell (including sub‑frames) – replacements of the same pattern as the original
• engine – alternative cubic capacities of the same basic engine, or alternative original equipment engines - if the number of cylinders is different, it is typically (but not always) non‑original equipment

That scuppers my plans for MOT exemption, I have a larger capacity same engine to put into my project, I'll see how many years of MOT costs it will take to rebuild the original engine.

 

[qwakers]

the rules literally state thats allowable.

 

[Screwdriver]

MOT exemption is ridiculous in any case. ALL vehicle used on public roads should be tested.

The MOT testers competency , is another issue and should be addressed.

I am kind of with you but the logistics would be horrible. For example, remembering these are forty year old vehicles, in the 60's they didn't even need to have seat belts. You can't change the bumper on a Ferrari LM250 (!) or the headlight position etc. There are a number of MoT requirements which historic vehicles just cannot fulfil. So you might think well just make it a sensible "roadworthiness" test but that is already a requirement, even for historic vehicles so...

The other argument would be these things are so fantastically rare that you'd be duplicating an already onerous testing regime for an extremely low number of actual vehicles.

 

[tigdlo]

the rules literally state thats allowable.

Was that a reply to me? If so, it lists engine under what counts as a substantial change, wit the exception under the heading of "If parts no longer available", in my case parts for the original engine are available.