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27th February 2022, 13:03 | #21 |
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This morning using borrowed NASA-based holographic technology (wifey ), I managed to read the white label. This has unearthed some further info. I've reviewed everything we've got so far which I hope will refocus the issues.
Facts established The car was fitted new with: • J RPD000240 self-levelling rear dampers • RH Blue/Brown RKB000370 rear springs • PT/JT Purple/Brown front springs (REB000480) and dampers (RNB000400/410) Rear issues Wheel-to-wing height is 20mm high @ 420mm Bang when weight fully comes off nearside (main suspect is damper) I know the following: a) rear offside spring replaced in 2014 (so will assume both sides were) b) OEM dampers were self-levelling I do not know the following: a) rear dampers still OEM self-levelling b) replacement rear springs are OEM c) what the effect is of fitting too-soft springs to self-levelling dampers (force the high ride height?) Front issues Wheel-to-wing height is 11mm low @ 389mm Mid-undertray ground clearance is 65mm low @ 90mm I know the following: a) front springs are new ECP aftermarket Anschlers (https://www.eurocarparts.com/search/627750291) I don't know the following: a) whether or not I renewed the dampers with the rest of the suspension in October (I've forgotten, plonker ) Need to check whether: a) rear springs are correct spec b) rear dampers are correct sec c) front dampers are correct spec d) rear spring insulators are correct spec Any issues I've missed? Dougie.
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R75 C2 RJBLH Connoisseur CDTi Auto Saloon Built 08/02/2005 @14:57 hrs: Registered 26/08/2005 122nd of 141 built that day British Racing Green Pearlescent (HFF) Sandstone leather with black piping (SPJ) 136,000 miles |
28th February 2022, 11:13 | #22 |
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ECP have now supplied me with the specs for their aftermarket springs I fitted (left column).
I had hoped that the fitted springs would be shorter and therefore account for the lower ride, but the opposite seems true? But then I see that the wire diameter is thicker which will make is stiffer. I also don't know if different springs have more or less coils (the fitted ones have 5, don't know what the OEM ones would have) which I guess would also affect stiffness. Any engineers help out? Dougie.
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R75 C2 RJBLH Connoisseur CDTi Auto Saloon Built 08/02/2005 @14:57 hrs: Registered 26/08/2005 122nd of 141 built that day British Racing Green Pearlescent (HFF) Sandstone leather with black piping (SPJ) 136,000 miles Last edited by goltho; 28th February 2022 at 11:17.. |
28th February 2022, 12:35 | #23 |
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Rover 75 Tourer
Blue/Brown springs 254mm long, 130mm dia. wire is 13.3mm (over black finish) Dampers are Boge Nivomat. Self levellers are larger diameter than standard. |
28th February 2022, 17:09 | #24 | |
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Quote:
See: https://rimmerbros.com/Item--i-REB101430 I assume that will make a difference? TC |
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28th February 2022, 17:14 | #25 | |
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Quote:
Dougie.
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R75 C2 RJBLH Connoisseur CDTi Auto Saloon Built 08/02/2005 @14:57 hrs: Registered 26/08/2005 122nd of 141 built that day British Racing Green Pearlescent (HFF) Sandstone leather with black piping (SPJ) 136,000 miles |
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2nd March 2022, 14:24 | #26 |
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some spring info for you:
Green/Blue fitted load: 4071N spring rate 19.3N/mm, wire diameter 13.8mm total number of coils 5, 3.6 are active Purple/Brown fitted load: 4282N, spring rate 23.5N/mm, wire diameter 14.07mm, total number of coils 5, 3.8 are active If you have green/blue fitted that would explain why the front is low |
2nd March 2022, 15:55 | #27 | |
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Quote:
Questions: What do the 4071N/4282N relate to please? Purple/Brown springs have wire diameters of 14.5mm and not 14.07mm from what I've seen? Dougie.
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R75 C2 RJBLH Connoisseur CDTi Auto Saloon Built 08/02/2005 @14:57 hrs: Registered 26/08/2005 122nd of 141 built that day British Racing Green Pearlescent (HFF) Sandstone leather with black piping (SPJ) 136,000 miles |
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3rd March 2022, 09:01 | #28 |
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Questions:
What do the 4071N/4282N relate to please? Purple/Brown springs have wire diameters of 14.5mm and not 14.07mm from what I've seen? Hi Dougie, The 4071N and 4282N are the loads (in newtons) on the spring at fitted length i.e when installed on the vehicle. As you know there are several different springs with different fitted loads to accommodate different options fitted to the vehicle like what engine, auto or manual gearbox, air con, FBH etc. they all change the weight so the springs have to change to keep the same ride height. The spring diameter is 14.07mm. I work for the company that supplied the suspension modules to MGR and this is taken from our drawings of the springs. |
3rd March 2022, 09:03 | #29 | |
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Quote:
Dougie.
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R75 C2 RJBLH Connoisseur CDTi Auto Saloon Built 08/02/2005 @14:57 hrs: Registered 26/08/2005 122nd of 141 built that day British Racing Green Pearlescent (HFF) Sandstone leather with black piping (SPJ) 136,000 miles |
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5th March 2022, 10:25 | #30 |
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Hello again Dougie, If you plan on replacing road springs, I understand that eBay seller 'best_of_british_rover' sell MGR original spec stuff. If they have any, they might be cheaper than Rimmer for example. See: https://www.ebay.co.uk/sch/i.html?_n...pg=60&_fosrp=1
TC Last edited by T-Cut; 5th March 2022 at 10:28.. |
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