BigJimnyMeet (North) 2024 (12 Jan 2024)
14th July 2024
Parkwood Nr. Leeds
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Re:Are heavy duty rear springs available or are......
- Max Headroom
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Scimike wrote:
I don't know if they make Jimny springs or if they will make you a one off set. They are here just in case nothing else pops up.
www.jones-springs.co.uk/off-road-suv-springs
They may just make cart springs, but could be worth a call.
I can vouch for Jones' springs being exxcellent - they made the springs for my vintage MG - they were very easy to deal with and the turn around time was very reasonable
IF IT AINT BROKE, KEEP FIXING IT UNTIL IT IS
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I think I'd try the spring spacers to start with due to their low cost. Obviously you are not increasing the spring rate so I'm assuming that you're happy with how it drives now but just want to correct the height.
Kirkynut
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- NineCherries
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that might be enough to support the rear better. and so long as the car looks and feels level then that might be it, if not i'll look into upgrading the front with diesel springs.
I do remember reading one of Dave's daily drive builds on here where he fitted front springs to the rear i think (standard shocks with shock re-locators) and different stuff to the front (vitara rear shocks on the front with springs and spacers?) but id need to go for a search, It peeked my interest when he posted it a while back.
Thanks again folks
T
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There's plenty of room for spring compressors.
Kirkynut
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- jackonlyjack
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One on the axle and other on chassis rail up the side of petrol tank
I fitted +2" springs this way
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- NineCherries
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Here is a bit of a break down on what I found/done.
To start with,
Standard spring lengths, by my unscientific measure methods.
Fronts 340mm
Rear right 290mm
Rear left 273mm
The car still has all my usual stuff in the boot, and a 2nd battery behind the drivers seat to power my Yaesu 2m radio, tow bar is fitted along with my full steel JimnyBits roof rack and is on 205/75/15 general grabbers.
Before heights from ground to top of arch
Rear right 715mm
Rear left 735mm
Front left 745mm
Front right 740mm
Ground to bottom of towbar hitch 265mm
I then jacked up the car via the tow bar to have the suspension at full length with the tyres still on the ground, 395mm
Front spring remain unchanged,
Rear springs swapped out for a 2nd sets of fronts.
After heights from ground to top of arch
Rear right 755mm
Rear left 775mm
Front left 760mm
Front right 740mm
Ground to bottom of towbar hitch 310mm
And an after measurement where I jacked up the car again via the tow bar to have the suspension at full length with the tyres still on the ground, 395mm
If I get a chance I’ll remeasure tomorrow to see if the after measurements have settled any after driving and I’ll update them. First impressions are positive, car now sits better at the rear, there is space between the rear bump stops and the axle (before it was a finger width away, but I forgot to take this measurement).
There still is room for the suspension to extend.
All measurements are indicators and are a few mm’s out going by the photos but this info might be of use to someone.
Thanks for the help and info that you guys provided, if this doesn’t work out in the longer term then I’ll look into the other springs suggested.
Thanks again for all the info.
Tony.
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Temeraire (2018 quasar grey automatic)
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Looks a positive result otherwise
J999 MNY, ULYSSES M18 VVT with ITB's Dyno tested at 130hp
Pickup/tipper, R7me gearbox & 6.4 Rocklobster, 31" Toyo MT, 2x ARB air locker 3.9 diffs in braced axles, 6" total lift, Floating rear conversion, Raptor painted, CB, Recaro's, Caged, etc, etc...
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Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
ADOS Attention Deficit Ooooh Shiny!
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- NineCherries
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@riccy would it? Shock is the still the same length, I still have the same amout of droop as before, no? My reckoning is the Max height before tyres lift of the ground is the same B4 and after, so on full compression the coils of the spring would close (or be very close) together before the shock reaches max compression as there is now physically more spring in there, the shock should be ok but poss a slightly longer bump stop is needed as now the bump stop might not be physically able to touch the axle and that can’t be good for the springs. At max extension the shock, in my head anyway, is still the limiting factor and it doesn’t matter what spring if fitted, at full droop the shock is maxed out either way. If I had fitted a longer shock but left the same original spring to try and improve articulation then my understanding is yes the shock could be fully compressed before the bump stop hits, and yeah that could wreck a shock.
I’ll need to get some paper and a pencil looked out and test my theory though
My aim isn’t to gain any extra suspension travel but more to try and regain the lost height/travel from having a heavier load on board all the time (towbar, steel roofrack, sun, amp are all in/on the car 100% of the time, with a toolbox, recovery gear, and a second battery on board 99% of the time too). When I have my little trailer hitched, before it almost sat on the bump stops at the back. With out the trailer hitched, there was only about 15/20mm between the bumpstop and the axle. I had previously stuck my hand in and could only freely pass 1 finger in the gap.
All good points though and worth thinking about. Thanks
T
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J999 MNY, ULYSSES M18 VVT with ITB's Dyno tested at 130hp
Pickup/tipper, R7me gearbox & 6.4 Rocklobster, 31" Toyo MT, 2x ARB air locker 3.9 diffs in braced axles, 6" total lift, Floating rear conversion, Raptor painted, CB, Recaro's, Caged, etc, etc...
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