15 registered members (Mogdavid, MATTMOG, Burgundymog, Dave Collis, PPD, John07, TeddyLawler, Gordon D, Grumpy2, Mike D, DaveW, smudger1, KennethM, Budster, RichardV6),
61
guests, and 12
spiders. |
Key:
Admin,
Global Mod,
Mod
|
|
Forums34
Topics44,897
Posts759,877
Members8,325
|
Most Online1,033 Dec 28th, 2019
|
|
|
Re: Rebound spring gap ??
[Re: Peter H]
#768238
31/01/23 01:25 PM
31/01/23 01:25 PM
|
Joined: Feb 2016
Posts: 5,890 East Harling, Norfolk UK
RichardV6
Charter Member
|
Charter Member
Joined: Feb 2016
Posts: 5,890
East Harling, Norfolk UK
|
The main springs have weakened or are simply too short Peter, assuming you have pushed the car back and forth a short distance to find an average static position. Dampers will not affect this situation unless they have seized or are too stiff to allow normal suspension articulation. Given your mention of competition use the car will have had a hard life which may have contributed to this situation. With that amount of play you will have little roll resistance and a large amount of rebound suspension travel over bumps. Suggest the well proven SSL RS kit which includes full set of dual rate springs, adjustable gas dampers and steering bearings. It allows accurate setting up of the ideal zero static play on rebound spring you mention.
Richard
2018 Roadster - Red/Magnolia - "Morton" 1966 Land Rover series 2a SWB 1945 Moto Guzzi Airone
|
|
|
Re: Rebound spring gap ??
[Re: Peter H]
#768244
31/01/23 01:50 PM
31/01/23 01:50 PM
|
Joined: Jul 2007
Posts: 23,646 Suffolk, England
John V6
Brooklands Register contact
|
Brooklands Register contact
Member of the Inner Circle
Joined: Jul 2007
Posts: 23,646
Suffolk, England
|
Daft question but does the suspension move fully. Sometimes the bushes can sieze. That gap is certainly larger than anything I have ever seen. GoMog has something on that here siezed front end
JohnV6 2014 Brooklands Edition Roadster "Brookland's Belle" #5 of 50
|
|
|
Re: Rebound spring gap ??
[Re: Peter H]
#768259
31/01/23 04:53 PM
31/01/23 04:53 PM
|
Joined: Apr 2008
Posts: 11,099 Gloucestershire, UK
Hamwich
Scruffy Oik
|
Scruffy Oik
Member of the Inner Circle
Joined: Apr 2008
Posts: 11,099
Gloucestershire, UK
|
Yep, looks like someone's put in short high rate springs to stiffen the rear suspension and lower the ride height. Like Richard says, the roll on turn in will be pretty savage. Definitely agree with installing SSL kit instead.
Tim H. 1986 4/4 VVTi Sport, 2002 LR Defender, 2022 Mini Cooper SE
|
|
|
Re: Rebound spring gap ??
[Re: Peter H]
#768266
31/01/23 05:39 PM
31/01/23 05:39 PM
|
Joined: Jun 2015
Posts: 1,361 North Somerset, UK
Deejay
Has a lot to Say!
|
Has a lot to Say!
Joined: Jun 2015
Posts: 1,361
North Somerset, UK
|
Looking at the grease witness marks, it appears that the rebound springs are never called upon to perform at all!
Doug
2011 +4 in Rich Maroon 1972 750 “ComDom” sprinter 1958 Triton 650 1992 Triumph Trophy 900
|
|
|
Re: Rebound spring gap ??
[Re: Peter H]
#768288
31/01/23 09:02 PM
31/01/23 09:02 PM
|
Joined: Feb 2016
Posts: 5,890 East Harling, Norfolk UK
RichardV6
Charter Member
|
Charter Member
Joined: Feb 2016
Posts: 5,890
East Harling, Norfolk UK
|
Just to be absolutely certain the main springs are too short I would echo Jon (Coopermans) advice on removing dampers but after suspension has been lubricated. I would add grease at the stub axle nipples. The kingpin top bolts may still have the OE engine oil lubrication system but many owners have replaced this with extra grease nipples.
When all lubed do a drop test by jacking wheels a few inches above ground with hydraulic jack and allowing to drop quickly. The car should bounce but note the kingpin geometry causes tyres to squeeze together slightly under compression hence possible need to push the car back and forwards to allow settling and accurate assessment of static ride height.
If rebound spring gap remains similar to your photo it needs sorting. Whilst dampers are off you can check them manually. As a minimum you will probably need new main springs but it's pot luck where that will leave the rebound spring gap if any, which is why the SSL kit although expensive is the attractive option. As it also includes stub axle to spring roller bearings it will almost certainly lighten steering as well.
Look forward to hearing your further findings.
Richard
2018 Roadster - Red/Magnolia - "Morton" 1966 Land Rover series 2a SWB 1945 Moto Guzzi Airone
|
|
|
Re: Rebound spring gap ??
[Re: Peter H]
#768305
31/01/23 11:16 PM
31/01/23 11:16 PM
|
Joined: Jul 2007
Posts: 23,646 Suffolk, England
John V6
Brooklands Register contact
|
Brooklands Register contact
Member of the Inner Circle
Joined: Jul 2007
Posts: 23,646
Suffolk, England
|
The steering on a 4/4 should be that heavy it has narrow tyres, are the tyres old & are the pressures correct (22 psi). We are all different & I don't use the SSL but others love it.
JohnV6 2014 Brooklands Edition Roadster "Brookland's Belle" #5 of 50
|
|
|
|