Anderzander Posted October 12, 2013 Share Posted October 12, 2013 I'm a bit confused about sided springs.... I've just bought two pairs of NRC8044/5 springs: The 44's are shorter and variously listed as for drivers/os/rh. The 45's the opposite. This is both as 110 fronts and disco rears. So my plan had been to simply fit them accordingly. A bit of further reading seems to list 44's (or 45's) fitted as a matched pair to the front of td5 onward 110's. This made me look at the spring set up for my td5 90: NRC9446/7, where strangely the drivers side is the longer one. As it is for HD 110's: NRC9448/9. So why the difference ? looking under my td5 90 the engine sits slightly more to the passenger side. So a longer spring on that side would seem to make sense - but its fitted to the drivers side and actually leans down on the left. On earlier vehicles the tank under the driver would be a factor - but I'm not sure the spring fittment seems to reflect the model changes? So what to do ? Do I fit the springs as matched pairs - the two longer 45's at the front and two 44's at the rear (based on the greater front weight bias). Or go with the 'standard' fitting and have the longer 45's on the passenger side. I'm hoping their might be a rationale that I'm missing so I can get it right without the trial and error of trying all the different combinations. Any help or thoughts very gratefully received. Quote Link to comment Share on other sites More sharing options...
smallfry Posted October 12, 2013 Share Posted October 12, 2013 Are they labelled up correctly ? I was always under the impression that the longer spring was fitted to the drivers side whether the vehicle was LH or RHD Are they colour coded ? Quote Link to comment Share on other sites More sharing options...
Anderzander Posted October 12, 2013 Author Share Posted October 12, 2013 They are colour coded and as per the spring list here : http://www.red90.ca/rovers/springinfo.html On there all of the longer springs seem to be ascribed to the drivers side - except NRC8044/5, which aren't detailed..... However when I've searched the part numbers they are universally described as NRC 8044 Yellow/Yellow - shorter and Drivers OS / RH Quote Link to comment Share on other sites More sharing options...
smallfry Posted October 12, 2013 Share Posted October 12, 2013 On my lap as I type this is my old genuine factory workshop manual for 90 and 110 (pre Defender) printed in 1988 And it lists............ NRC8044 double white stripe 384.3mm Drivers 110 basic specification Front NRC8045 double yellow stripe 368.1mm Passengers 110 basic specification Front NO mention of right or left hand, so deduce from that what you will.................... There may be more up to date info somewhere, but there seems to be some discrepancy somewhere ? Quote Link to comment Share on other sites More sharing options...
Anderzander Posted October 12, 2013 Author Share Posted October 12, 2013 Ooo - that's helpful. Whilst I google that some more - I'm also thinking I might take my 90 to the weigh-bridge to see what the left / right weight split is. I presume then it's the lt230, steering column and box, diffs and props that put put the weight on the drivers side ? Though half the props and the diffs aren't sprung so a bit of a red herring... Quote Link to comment Share on other sites More sharing options...
Anderzander Posted October 12, 2013 Author Share Posted October 12, 2013 Well searching google now seems to bring up a load of examples to support your book. Perhaps some American listings (with driver on the left) have been copied back to UK sites and confused things ? Quote Link to comment Share on other sites More sharing options...
western Posted October 12, 2013 Share Posted October 12, 2013 longer springs go to drivers side regardless of right or left hand drive vehicle. Quote Link to comment Share on other sites More sharing options...
Anderzander Posted October 12, 2013 Author Share Posted October 12, 2013 So the longer springs are solely to accommodate the addition of a driver ? Quote Link to comment Share on other sites More sharing options...
Anderzander Posted October 12, 2013 Author Share Posted October 12, 2013 So much info and variation : LHD 110 2 seat utility, 5 seat station wagon and 5 seat crew cab (3050 Kg) Front - Driver's side NRC 8044 White/white Front - Passenger side NRC 8045 Yellow/yellow Rear - Both sides RKB101111 Purple/brown RHD 110 2 seat utility, 5 seat station wagon and 5 seat crew cab (3050 Kg) Front - Both sides NRC 8045 Yellow/yellow Rear - Both sides RKB101111 Purple/brown LHD 110 7 seat station wagon (3050 Kg) Front - Driver's side NRC 8044 White/white Front - Passenger side NRC 8045 Yellow/yellow Rear - Both sides RKB500300 White/green/green RHD 110 7 seat station wagon (3050 Kg) Front - Both sides NRC 8045 Yellow/yellow Rear - Both sides RKB500300 White/green/green Quote Link to comment Share on other sites More sharing options...
western Posted October 13, 2013 Share Posted October 13, 2013 Yes, & the front under seat fuel tank when fitted, later vehicles IIRC the spring handing ceased, go with what you want, for example my 110 rides on OME springs all round, 751 up front to cope with the winch & heavt bumper & 755's on rear, it sits slightly nose down about 1 inch difference front to rear/ but level side to side, the ride is really good. Quote Link to comment Share on other sites More sharing options...
miketomcat Posted October 13, 2013 Share Posted October 13, 2013 I was always under the impression the longer spring was to cater for the weight of the steering box. Mike Quote Link to comment Share on other sites More sharing options...
western Posted October 13, 2013 Share Posted October 13, 2013 quite possible, the diffs,transfer box & steering box are all on the drivers side. Quote Link to comment Share on other sites More sharing options...
miketomcat Posted October 13, 2013 Share Posted October 13, 2013 The steering box changes with left or right-hand drive hence the statement of drivers not left or right well that was my logic. Mike Quote Link to comment Share on other sites More sharing options...
Anderzander Posted October 13, 2013 Author Share Posted October 13, 2013 quite possible, the diffs,transfer box & steering box are all on the drivers side. Diffs though aren't part of the sprung weight - so won't make a difference. I would have thought the offset of the engine would more than balance the transfer and steering boxes ? Quote Link to comment Share on other sites More sharing options...
ian_s Posted October 14, 2013 Share Posted October 14, 2013 are the different length springs the same rate? i would assume that the shorter spring is actually harder, and so goes on the heavier side of the car. as you said, the engine is more over to the passenger side, so that's the side that gets the harder springs. the softer springs are longer, so that with less weight on them they end up the same length to give a level car Quote Link to comment Share on other sites More sharing options...
Anderzander Posted October 14, 2013 Author Share Posted October 14, 2013 I follow your logic - but they are the same rate and the longer one does go on the drivers side. I plan to take the truck up to the local weigh bridge and see if they will weigh each side for me. I'll report back my findings. Quote Link to comment Share on other sites More sharing options...
bluespanner Posted October 14, 2013 Share Posted October 14, 2013 I always ran the same springs all round on my 90.... Quote Link to comment Share on other sites More sharing options...
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