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Essential mods for taking on off-road trails

  • ILIV
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28 Oct 2020 07:23 #229505 by ILIV
Hi!

I'm a happy owner of a new Jimny with just 2500 kilometers on odometer and just a few outings under my belt.





This is my first Jimny and actually my very first car ever. Really like it so far.

I live some 100 km away from the mountains so obviously I'm going to be taking Jimny there quite often. I do plan on touring on asphalt roads too.

In the mountains, I'll encounter all sorts of challenges from crossing mountain rivers to taking on rugged and extremely muddy, narrow forest trails.

The car needs to be prepared to meet the challenges of off-road fun. I must say I do not plan to partake in extreme off-road driving but the trails I've seen so far strongly suggest I need to do some basic improvement at least.

I thought about it and my thinking evolved from "I want a full-on off-road monster" to "I really need the essential mods only".





With that in mind, I have a couple questions for those of you who had the privilege to live with Jimny for longer than just a few months.

The mods that I'm thinking about are:

* Differential breather kit for crossing the rivers
* Rocker rails to protect lower side of the body (door sills basically)
* Air compressor + inflater/deflater for convenient control of the PSI's
* Bash plates/guards for engine, differential, transfer box, transmission (lower side of the car)
* A winch

Do I really need anything else?

The first three items on this list are kind of a no-brainer. The last two are the ones I'm uncertain about.

When it comes to protection for the lower side of the car the options range from Suzuki's own differential guards (the minimalist option of all out there perhaps) to custom protection that covers entire surface of the underbody with something between the two extremes.



The full underside protection is tempting but I heard a few seemingly valid arguments against it. E.g. it's going to be just too heavy (add about 40-45 kg). It will collect all of the dirt and ruin proper air circulation which will prevent the needed cooling for all the important stuff that's underneath the pretty bodywork. It will also get even heavier as it continues to accumulate mud and stones. Cleaning the underbody is going to be very difficult too.




On the other hand, it protects everything that's exposed down there.

The Suzuki's differential guards seem too little of protection. I thought maybe combining the Suzuki's differential guards with an engine sump guard would be the most balanced and optimal protection for my needs?



I can't really decide what to go for. I could use some advice.

As for the winch, I'm looking at Warn AXON 45-S which weighs about 13.6 kg and with all the mounting brackets it'll probably reach at least 15 kg easily.



With an air compressor and the winch installed in the front (stock) bumper wouldn't be I putting too much weight on the front of the car?

Overall, is there a rule of thumb for how much additional weight I can put on the car by attaching all these accessories?

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28 Oct 2020 08:03 #229507 by zukebob
Before I start, I will begin by saying that my definition of "rugged and extremely muddy" may not be the same as yours.

Based on the use you describe, the first thing I would have on the list is tires. Depending on how serious the muddy conditions are, you might get away with All Terrain. If it really is a deeper mud, you may want to go to mud tires.

If you are doing any water crossing over the height of the axles, you are right to have breathers on your list. A Transfer Case guard is probably a good default level of protection but the rest of the skid plates would be based on your evaluation. If you are going to areas where you will be doing any serious rock bashing, adding differential and radius arm guards (and perhaps rock sliders for the sills) would probably be a good idea. Those are priorities that you would need to decide.

Compressor: you can carry a portable. Unless you plan to do air lockers in the future, mounting a permanent compressor isn't required.

I don't personally have a winch (due to weight) but I also don't go on trails alone.

I think most any other mods you will decide by driving the trails and learning what would be an advantage.

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

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28 Oct 2020 08:47 #229509 by Busta
The Jimny is rugged as standard. The underside of the car is inherently tough. You can drag one along on it's belly all day long without issues. For navigating the kind of trails you have pictured you really don't need anything. Think of who else uses the trails. Farmers and foresty workers drive standard 4x4s. They won't have fitted anything more than a good set of tyres and they certainly won't "air down" at the start of the tracks. A Jimny in standard form will go the same places as any other standard 4x4, day in day out without issues. So keep that in mind before you get carried away with modifications.

The first and possibly only thing I'd spend my money on is off-road driving tuition.
The following user(s) said Thank You: DAGZOOK

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28 Oct 2020 09:13 #229511 by lookonimages
1 jimny extremely capable as is.
2 portable compressor.

Then go drive some and see what you experience. Most times you will be with people. If alone see what you can do and if real daunting hold off from doing the extreme. You anyway not going to do extreme off roading from day one.

With actual experience first doing some driving/exploring, you will find out what you need for your conditions.

Most often 3rd will be tyres.

NO NEED to go overboard adding things you might not even ever need. Just go play a bit.

Sent from my SM-A505F using Tapatalk

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28 Oct 2020 09:50 - 28 Oct 2020 09:54 #229512 by Gadget
Probably the only protection I'd consider essential are radius arm mount guards, as they always seem to get damaged first. If the photos you posted are indicative of the trails you're driving, I don't think you need any of the other protection or a winch.

Diff breathers are a maybe, you can always stop before water crossings and have a cup of tea, letting the diffs cool and then drive over.

The maximum load that the car is allowed to carry is, iirc 340kg-ish, including passengers, so slapping 100kg of armour and winch on the car isnt something I'd choose to do.
Last edit: 28 Oct 2020 09:54 by Gadget.

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28 Oct 2020 09:52 #229513 by 300bhpton
There are no real 'right' answers to this. Although probably a lot of not so good ones.


As to what mods, really depends on the terrain where you will be going, your driving style and if you are venturing alone or with people.

The Suzuki guards are pricey. Check out Jimnybits for much cheaper and likely better options:
www.jimnybits.com/jimny-18-on/guards-protection.html

Some of the underbody guards you listed look way over the top. I'm not really sure what use they would be. The sump is unlikely to be a risk for most off roading, due to where it is located in the vehicle.

From experience I would say the transfer box is vulnerable and the radius arm brackets. The rock sliders/side sill bars are a very good idea too, but make sure you get some that fit well and are strong. I've seen some YouTube vids of them wobbling about and not doing much.

Diff guards, really depends on the terrain. If you are likely to be hitting the diffs against rocks, then yes. If not, you probably don't need them.


Other things you may want to consider:

- a kinetic recovery rope and shackles
- a radio of some kind (CB etc)
- first aid kit

If you are going as only one vehicle. Then something like a winch would be sensible. And maybe some waffle boards.

Depending on the terrain, suitable tyres may well be advisable too. If it is slippery mud, a set of Mud Terrain tyres will be vastly more affective.

A 'good' 2" lift will also give you more clearance under everything bar the axle casings. Most good lift kits will also improve the suspension flex and off road ride too.
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