|
|
Post by tom on Apr 13, 2021 20:25:33 GMT 12
Can I change my shock absorbers if it was certified with the ones currently in the vehicle?
|
|
|
|
Post by Chris on Apr 14, 2021 8:24:06 GMT 12
Can I change my shock absorbers if it was certified with the ones currently in the vehicle? Hi Tom If you are replacing the shock absorbers with like for like, then that is a repair, not a modification. If it is a modification then it will require re-certification. Cheers Chris |
|
|
|
Post by tom on Apr 14, 2021 20:07:55 GMT 12
I can no longer get the current brand. They would be a different brand but a similar type of shock. I.e suitable for the same lift, same mountings etc. does this count as a repair?
|
|
|
|
Post by Chris on Apr 15, 2021 8:04:41 GMT 12
I can no longer get the current brand. They would be a different brand but a similar type of shock. I.e suitable for the same lift, same mountings etc. does this count as a repair? What brand are they currently and what brand are you going to? |
|
|
|
Post by tom on Apr 15, 2021 10:33:41 GMT 12
Currently RAW 4x4. Going to either Ironman 4x4 or a Tough Dog 4x4.
|
|
|
|
Post by Chris on Apr 15, 2021 11:58:26 GMT 12
Currently RAW 4x4. Going to either Ironman 4x4 or a Tough Dog 4x4. Hi Tom From the information provided, then I would expect that a repair to suspension should not require re-certification providing that - the springs or shock absorbers are direct replacements, and:
- replacement springs are contained within unmodified OE seats throughout full suspension travel; and
- replacement springs are self-retaining in their seats at full extension, without use of non-standard devices such as wire-ties, straps, or external spring locators; and
- replacement springs have not been heated or cut; and
- springs and spring seats are not height adjustable by any means (unless OE); and
- suspension maintains sufficient travel for safe operation; and
- suspension components maintain sufficient clearance from unmodified bump-stops when fully laden; and
- a minimum of 100 mm ground clearance (un-laden and without driver) exists below any part of the vehicle structure, or any steering, braking or suspension component
(does not include such items as exhaust pipes and exterior body panels that do not contribute to the structural strength of the vehicle); and - the normal relationship between front and rear suspension height is not unduly affected; and
- clearance is maintained between all components, when tested from lock to lock at full droop; and
- suspension retains at least 40 mm of rebound (droop) wheel travel
Note: Strut or spring spacers always require certification
Note: The only other allowable methods of adjusting vehicle ride height without LVV certification are leaf spring blocks (as per below requirements) or adjustment of OE equipment (torsion bars or OE adjustable air suspension)
Note: When determining if there is sufficient suspension travel remaining, consideration must be given to the vehicle being in use and fully-laden
Note: Sufficient clearance must be maintained from the travel-limiting bump stop (not an OE spring aid). The spring aid and/or bump stop must not be modified. A spring aid is a low-density conformable material that is fitted inside a coil spring or above a leaf spring by a vehicle manufacturer to assist the spring, and acts as the bump stop only once it is fully compressed. The spring aid may be contacted at any loading condition to increase the vehicle’s spring rate, but the vehicle must retain sufficient wheel travel. A bump stop is a small high-density rubber bumper that is designed to stop vehicle suspension or driveline components from coming into contact with the vehicle structure at the extremes of its suspension travel, and is not designed to carry the load of the vehicle for sustained periods of time.
Note: Rebound wheel travel should be measured as the difference between the distance from the top of the tyre and the wheel arch with the vehicle resting on the ground, and the top of the tyre to the wheel arch with the vehicle lifted so that its tyres are clear of the ground (suspension hanging in full rebound). This difference must be greater than 40 mm.
Note: A vehicle can be LVV certified with less than 100 mm ground clearance provided that there is sufficient suspension travel |
|
|
|
Post by matt22 on Mar 31, 2022 14:36:06 GMT 12
Sorry to dig this up but I have a similar dilemma. Looking to upgrade my suspension in my jimny that will raise it by 40 or 50mm (new shocks and springs) so I can do a little offroading. Does this need certification, provided that all other criteria you have listed is met? Or is it as simple as any vehicle suspension (shock and spring) lift requires certification to be legal? Thanks
|
|
|
|
Post by Chris on Apr 21, 2022 8:48:31 GMT 12
Sorry to dig this up but I have a similar dilemma. Looking to upgrade my suspension in my jimny that will raise it by 40 or 50mm (new shocks and springs) so I can do a little offroading. Does this need certification, provided that all other criteria you have listed is met? Or is it as simple as any vehicle suspension (shock and spring) lift requires certification to be legal? Thanks Hi Matt Whether it requires certification depends on how it has been modified, check my list for what suspension modifications do not require certification. If it does not meet all of those requirements then it will require certification. Have you got a link to the kit you are looking to purchase? Cheers Chris |
|
|
|
Post by matt22 on Apr 27, 2022 19:30:29 GMT 12
|
|
|
|
Post by Chris on Apr 28, 2022 7:56:22 GMT 12
Hiya Matt From appearances that is just a spring and shock replacement which typically does not require cert, however the FAQ's at the bottom of your link talk about shock relocators, but the images do not show these, so it is not clear if these are something additional you need to buy or if they come with the kit. If they are fitted, then I expect it would require cert. I'm sure that is clear as mud, let me know if you need more clarification. Cheers Chris |
|
