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Jimny 4 Link Suspension

  • minare
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29 Jul 2014 12:57 #120937 by minare
Jimny 4 Link Suspension was created by minare
Hey all,

Has anyone have an experience with rear 4 link conversion as the following links?
and what are the impressions
www.aliexpress.com/store/product/Keep-ca...0089_1265852609.html
item.rakuten.co.jp/hb-1st/877761/

does anyone knows 3 or 4 link kit for front?

thanks
Guy :)

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  • TomDK
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29 Jul 2014 14:35 - 29 Jul 2014 14:43 #120939 by TomDK
Replied by TomDK on topic Jimny 4 Link Suspension

minare wrote: Hey all,

Has anyone have an experience with rear 4 link conversion as the following links?
and what are the impressions
www.aliexpress.com/store/product/Keep-ca...0089_1265852609.html
item.rakuten.co.jp/hb-1st/877761/

does anyone knows 3 or 4 link kit for front?

thanks
Guy :)


I wouldn't waste my money on this kit, and it isn't a true 4-link as it still requires the panhard rod.
Also, as far as I know, upper and lower rods must be same length to avoid the axle turning when it articulates. And also with these short upper rods, I don't think you'll that much more articulation than with standard radius arms.

There are a few good 3-link and 4-link calculators online you can use, if you want to make it right. 3-link is a bit more straightforward than a 4-link, but still requires a panhard rod. 4-link does not.
Last edit: 29 Jul 2014 14:43 by TomDK.

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  • Cider
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29 Jul 2014 15:36 #120941 by Cider
Replied by Cider on topic Jimny 4 Link Suspension
I think that kit is for a Suzuki SJ only

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  • funkyjimny
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  • 2004 jimny soft top, factory hardtop, ARB bumper
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29 Jul 2014 20:22 #120965 by funkyjimny
Replied by funkyjimny on topic Jimny 4 Link Suspension
There are pictures of the jimny kit below, but as Tom says the top link is far too short really, looks like the old 4 link kits we used to put on mk 2 escort rally cars 20 odd years ago lol

Picture shows some articulation, but not more than a std 3" lift setup IMO ?

Gary

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  • vitara_mad
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29 Jul 2014 21:12 #120973 by vitara_mad
Replied by vitara_mad on topic Jimny 4 Link Suspension
the top links need to be at least 70% of the lenth of the bottom links for it to work without binding up

in the middle of a build with 4 link rear & 3 link front at min did try to do 4 on front but it just was not working out

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  • TomDK
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29 Jul 2014 21:21 - 29 Jul 2014 21:23 #120976 by TomDK
Replied by TomDK on topic Jimny 4 Link Suspension

vitara_mad wrote: the top links need to be at least 70% of the lenth of the bottom links for it to work without binding up

in the middle of a build with 4 link rear & 3 link front at min did try to do 4 on front but it just was not working out


I think there's more to it that just a rule of thumb about length of the rods.
The calculators online seems quite advanced really.

But must admit, don't know alot about it. Would never get 3 or 4 link road legal here in Denmark :)

www.pirate4x4.com/forum/general-4x4-disc...er-request-help.html

www.fourwheeler.com/how-to/suspension-br...k-suspension-part-2/

Edit:
Looks like you're right about those 70%.. my bad :)
Last edit: 29 Jul 2014 21:23 by TomDK.

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  • minare
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30 Jul 2014 07:40 #121008 by minare
Replied by minare on topic Jimny 4 Link Suspension
the rear housing in my opinion are good solution
for the front ones maybe it can combines something from this solution
item.rakuten.co.jp/hb-1st/878058/
and make it 70% from the longer arms

what do u think?

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  • TomDK
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30 Jul 2014 08:14 #121010 by TomDK
Replied by TomDK on topic Jimny 4 Link Suspension

minare wrote: the rear housing in my opinion are good solution
for the front ones maybe it can combines something from this solution
item.rakuten.co.jp/hb-1st/878058/
and make it 70% from the longer arms

what do u think?


You already have asked what we think.
And I have already said that it's a complete waste of money. Read the articles in the links I've posted and you have you answer.

There's much more to a 4-link suspension than just making some arms longer than the others.
Also, that kit you are so interested in, is not a true 4-link. More like a 3-link with a extra upper arm.

If you want to pay that kind of money. Get in touch with ORA, and ask I they can help you out making brackets for a 3-link. I know Rob's been toying with the idea of a 3-link for the Jimny before.

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23 Aug 2020 18:32 - 23 Aug 2020 18:46 #227223 by Zapnologica
Replied by Zapnologica on topic Jimny 4 Link Suspension
Very interesting reading this forum. I have recently been experimenting with pushing my 4" radial arm suspension setup to its limits. And from my practical tests, the standard radial arms limit the flex, and add a substantial amount of resistance the more and more you twist the axel.

Purely by the geometry of the radial arm droping down, the bushes will want to twist, and you can only get so much twist out of them. My thoughts are that a 4 link would give a substantial amount of additional flex, given you put longer shocks and longer soft coils.. If you are flexing alot, I also think the 4 link will last longer as it won't be putting so much stress on the bushes.

I have some images to post to show what I'm explaining.

Where I am stuck with is the following two questions.

1: do I actually need more flex?
2: the radial arms binding act almost as an anti swaybar. Resisting flex the more you flex. If you go 4 link all that resistance will go away. How will this affect road handling? And will your car just flip over much easier when on a technical obstcle?

Point 2 worries me quite abit. And might have to end up putting on a rear swaybar, which then puts you back at the stock setup..


Images.


Bushes binding, and limiting full flex.

I then removed the bolt from the radial arm to relieve the binding stress.


2015 Suzuki Jimny

4" 100mm Lift
M18A Motor
Crawler Gears
Dual Air Lockers
Lots of mods.
Attachments:
Last edit: 23 Aug 2020 18:46 by Zapnologica. Reason: Added images

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  • Lambert
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23 Aug 2020 19:02 #227226 by Lambert
Replied by Lambert on topic Jimny 4 Link Suspension
the main problem I can see with a proper triangulated 4 link suspension is going to be space under the body for the links to move into. The Jimny is very compact and space for things like fuel tanks is at a premium. That said anything is possible with enough money and effort. YouTube is full of this kind of stuff just on wranglers but the information is out there.

Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
ADOS Attention Deficit Ooooh Shiny!

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23 Aug 2020 21:40 #227239 by Roger Fairclough
Iv'e never liked polybushes and your photos prove the point.A standard void type bush does not extend past the radius arm so the arm can twist and it's this twist that allows the suspension to work in articulation mode. Look at the photo and you will see that the flange on the polybush is stopping this flex.
I would suggest you replace the polybushes with original void bushes and then you will see full articulation.

Roger

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24 Aug 2020 01:56 #227242 by zukebob
Replied by zukebob on topic Jimny 4 Link Suspension
Unless you are ready to go through some serious modification, I would forget the pursuit of a 4 link suspension. Lambert provides the primary reason in his reply. There just isn't available real estate to integrate a reasonable 4 link design. I would recommend one of the posts from the past such as this one: 4 link Jimny build . It provides an idea of what needs to be done.

If memory serves, there are a couple of posts on this forum that contain 4 link designs and you can find some articles elsewhere. Most of them show about the same level of modification. For better articulation of the front you can disconnect the sway bar and generally, as Roger suggests, use rubber bushings.

I started out with nothing & still have most of it left

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