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98 Hilux Sr5
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Author Topic: 98 Hilux Sr5  (Read 43866 times)

Offline boof

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98 Hilux Sr5
« on: March 05, 2007, 11:17:54 PM »
Well I bought the ute stock except for a canopy early in 02



Used it for work for a while then I removed the canopy fitted 2" lift, 31" Claws, Rollbar, long range tank, and a front auto locker among other things.

 





98 Hilux SR5 35s on 17s Locked front and rear. Lifted with a Lexus V8

Offline boof

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Re: 98 Hilux Sr5
« Reply #1 on: March 05, 2007, 11:21:59 PM »
It was about this time I met Twisty off this forum and decided some changes were in order.

So first on the list was a 2" body lift and some 33s.







Then after a trip to a 4wd park with Twisty I decided the Lexus had to happen




98 Hilux SR5 35s on 17s Locked front and rear. Lifted with a Lexus V8

Offline boof

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Re: 98 Hilux Sr5
« Reply #2 on: March 05, 2007, 11:32:21 PM »
3 days after I got the ute back with the motor the diff exploded  :-X

I took this opportunity to fit a rear air locker and redo the ratios from 4.3 to 4.88

I then decided to fit some 315/75/17s to it. This looked great but caused a whole host of dramas with scrubbing issues.



So I decided to completely transform it. I spoke to a mate who owns a Fabrication business. And work has started on the new look.
Once the barwork is finished we will be removing the rear leafs and fitting coils and will also be removing the IFS for solid axle.











98 Hilux SR5 35s on 17s Locked front and rear. Lifted with a Lexus V8

Offline 91_4x4runner

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Re: 98 Hilux Sr5
« Reply #3 on: March 06, 2007, 07:33:46 AM »
Your truck is so awesome. I wish they made 'em in the states.

Do you mean coils like a 4Runner or Jeep has, or coil-overs? I can't see the benefit of using regular coils instead of leaves, but definitely coil-overs.
91 4Runner
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Offline Cebby

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Re: 98 Hilux Sr5
« Reply #4 on: March 06, 2007, 09:04:11 AM »
Boof - that rig is AWESOME!  I wish they had offered that body style in the states.  I'd probably have had one by now if they did.

Re:  Coils w/ 4 link vs leaves? 

IMO, there is a better ride with coils and 4 link - plus, no axle wrap that leaves are prone to.  Especially with the V8!
« Last Edit: March 06, 2007, 09:07:17 AM by Cebby »
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Offline boof

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Re: 98 Hilux Sr5
« Reply #5 on: March 07, 2007, 02:31:28 AM »
Cheers Fellas. At this stage if we can get them legal where I live we will be going coilovers.
If we cant, it will be coils and shocks. The reason the leaves are no good is I want to be able to tow a camper trailer.
To get the leaves to flex means they will lose load bearing and wont tow well.
And then as cebby said I would need track bars and stuff due to the 1uz. Basically I want it 100% road legal so in Queensland where I live it severely limits us. :-\ I have no problems using a modified 4Runner rear as with lengthened arms and such they do flex and ride quite well.

Also I still have the dream of twin turboing the 1uz so I need some road drivability in it still  ;D
98 Hilux SR5 35s on 17s Locked front and rear. Lifted with a Lexus V8

Offline Smitherz

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Re: 98 Hilux Sr5
« Reply #6 on: March 09, 2007, 12:32:27 AM »
Hey nice truck! What is going on in that last picture? That is some crazy overkill steel fab going on! I am pretty curious! Make sure and figure out exactly how much travel you want before you commit to any suspension design. My friend and I both designed and built my whole rear suspension from scratch along with a lot of frame mods to compliment the plans. If you don't want too much travel (or choose not to in order to keep the stability) you can easily run some airbags! That is the best thing you could do to control the load capacity and still maintain stability. A friend of mine with a HUGE Ford has leaf springs with airbags and it works very very well keeping heavy loads under control. And when he unhitches the boat he just hits a switch to soften the airbags up and it rides nice and smooth again.

I would highly recommend keeping the leaf springs and using airbags for maximum stability while still retaining a nice ride. There are many different situations in which you can add and release air from the airbags to accommodate your situation.

You should definitely upgrade your spring hangers and obtain a nice set of leaf springs. There are lots of companies that make leaf springs and they will even make the length you want and make them softer or harder for you. Just have an idea of your vehicle weight and tell them how much tongue weight your trailer or load will put on your back end. I would definitely opt for the longer leaf springs because stock was NOT designed for V8 power. Upgrading the suspension is just part of upgrading the safety of the vehicle. The rear suspension is the weak factor on the Toyota pickups. You notice that everyone upgrades the front end and doesn't know what to do about the rear. Even if you buy that rear packages that are available the back end still can't keep up with the stock front geometry. Your solid axle is awesome. I would use leafs to compliment the toughness factor.

Check out the Donaho Racing truck. Airbags on this thing and you can haul some weight not problem. This is a nice and simple design which is bulletproof. It is spring under for max stability and wheel control but you can simply go leaf over and have the jacked up look =] And you aren't racing so it's not like you would lose any performance this way.





I LOVE working on high performance suspension and I have a lot of experience tuning race cars, race bikes and trucks. I have seen a couple link systems on jacked up trucks and it's just too much work and money for something that the fabricators didn't completely understand thus, not being able to get a good working suspension system on the truck.

I'm using full racing springs (very soft) on mine and designed it for upward travel as well as down. My rear is very stable and will not come off the ground unless I launch off a jump. Here are a couple pics http://www.fourwheelforum.com/index.php?act=ST&f=20&t=92&st=0#entry214
http://www.fourwheelforum.com/index.php?showtopic=81
« Last Edit: March 09, 2007, 12:52:33 AM by Smitherz »
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Offline Smitherz

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Re: 98 Hilux Sr5
« Reply #7 on: March 09, 2007, 01:22:06 AM »
Here is the US version of your truck  ;D. I forgot about this rig until just now.





This guy has a lot of pictures of his truck and some videos of himself climbing up some very rocky trails through the forest/mountains. He is running the setup I suggested. I can't remember if he's using bags or not... probably not. If you want more info on him I have it somewhere....
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Offline boof

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Re: 98 Hilux Sr5
« Reply #8 on: March 12, 2007, 04:48:55 PM »
Smitherz
Cheers for the info. I looked into keeping the leafs and airbags and was told that the airbags even when deflated will limit the flex in a similiar way to heavier springs. They basically told me it would be a waste of time hence why I went to coils and then onto coilovers. The main thing that we are after is good travel and ride obviously. The 5 link setup under the standard surfs/4 Runners is realistically more than adequate for my needs, the coilovers would just be the next step and better again. 
98 Hilux SR5 35s on 17s Locked front and rear. Lifted with a Lexus V8

Offline Smitherz

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Re: 98 Hilux Sr5
« Reply #9 on: March 13, 2007, 01:28:29 AM »
Ahhh I get it. You want to keep 'er more street legal. Airbags a waste of time! He must not have any experience with them! WOw. My friends own a very successful truck shop and they do airbags all the time with GREAT results. The local fire department even insisted that they put aigbags on their trucks because they are perfect to maintaining a great ride when you want smooth and then they increase your carrying capacity when activated. Properly installed, you won't even notice any difference. They are super soft and flexible when not inflated. You would love them because you get your nice smooth ride and then you pressurize and adjust them when you carry a load or hook up your trailer.

To keep your rear axle in check you'll need new leaf springs of course. Old springs absolutely cripple Toyotas. The stock springs are the worst and wear out very quickly. I know they issued a recall for the earlier US trucks and changed the spring strength altogether at that point. They sell them weak so they ride better. The stock springs aren't designed to arch much and the hangers don't allow and weren't designed for it either. All that wasn't needed since they didn't design it for more than a few inches of travel anyways. I've seen supercharged Tacomas with bigger tires burn rubber down the street with no problems. They easily put out as more power than the stock 1UZ so you will be safe with upgraded springs with longer decent shocks. Just use arched springs for more wheel travel and don't use spring/axle blocks if possible. This is easily the easiest and cheapest route. I would recommend doing these mods and then adding airbags after you have driven around for a while. Airbags are really great as long as you stick to the main brands like Firestone.

Good quality coilover shocks are very expensive as I think that anything less than the expensive ones is absolutely unacceptable. I've seen so many cheap coilovers break from moderate use. The quality coilovers only break/bend when a race truck takes a huge hit that would crumble a regular street truck.

You can go with upgraded leaf springs, new upgraded spring hangers, poly bushings with new longer travel shocks and be competely happy. This is by far the easiest way and you can change the leafs out and the shocks to make adjustments instead of having to rely on someone to tune coilovers. The whole coilover setup will have to be fabricated and cost MUCH more (tons of labor to have someone built it)... and cost more to have someone set it up properly to your needs. I love cutting and changing things out but in your case that's not really an option it sounds like. The green truck above really doesn't have any more parts added besides what I just mentioned. Well if also has an extended brake line which is simple.

Take a look at Donahoeracing's website http://www.donahoeracing.com/index.php as they have the best rear Tacoma package on the market. It's worth every penny. This will give you some ideas and something to consider. I've just seen what works and can tell you where you'll get the best bang for your buck. Of course I'm just trying to help. I won't be offended if you try and adapt a whole multi-link system from another vehicle to your truck =]  Heck, I was considering using Nissans independent truck rear suspension under my Tacoma!

Here is a pic of the shop trucks and mine on the end behind them. My truck really isn't that small, both of the trucks in front are really really big. Look how high you have to step to get into the blue Ford. There are motorized steps that come down when the door opens but it's a long way up.



The truck has nice soft springs and big airbags for when he towns his fishing boat and other things. When he first showed off the bags to me he dropped the rear of the truck when I was sitting on the tailgate and it actually lowered  :) down quite a bit. The system flexes a whole lot as I have been in the sand dunes with this truck. It's just a regular set of soft leaf springs and a regular set of adjustable Firestone airbags. I've seen him do this on a lot of work trucks and play trucks with 100% happy customers and many referrals from them. Just paint everything black underneath a Toyota and all is legal. Fun stuff!



Here is me holding a HUGE coil shock which was designed for a full size Ford F250 4-door. This is the biggest coilover shock you can buy in a street legal (United States) suspension kit. It was very heavy and I'm gritting my teeth because I couldn't hold it up for much longer.  :P It takes a few times to custom tune a coil over shock for someones expectations. The coils need to be the correct weight before you can tune the dampening which is done by taking the shock apart. The only way to speed up the adjustments is to use a bypass shock next to a shock that accommodates the coil spring. This is the only way to externally adjust the shock dampening without taking apart the whole single shock to make the internal adjustments.  This is a must for racers who need to adjust for different conditions and VERY expensive. Lots of time and experience needed either way with coils. If someone has done a coilover on a Hilux with good results I would like to see it. I have no doubt it can be done but I just can't recall seeing one that would be anywhere suitable for street.
« Last Edit: March 13, 2007, 02:06:39 AM by Smitherz »
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Offline boof

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Re: 98 Hilux Sr5
« Reply #10 on: March 13, 2007, 08:00:02 PM »
Most of the stuff on that site seems more suited to high speed events. The sort of terrain I will be tackling is more along the lines of the pics below.





I may be looking at wrong and am definately appreciating the info so if so please correct me.

I havent actually had any experience with airbags so can only go on what I am told. What I have been told is they will severley limit the flex when in hard offroad situations mainly travel both up and down? I do know that leaf springs can flex great with the right mods, I also know that where I live its actually illegal to relocate the hanger and use longer springs with drop shackles and similiar. Most of our laws here are crazy and ridiculous. The way it was explained to me is that the airbag even deflated will limit the travel due to its design. I am not sure if that is because legally the airbag can only be installed as a helper and the original spring has to maintain the load if that makes sense?

At this stage we are not even sure we can get the coilovers legal :( so I may have to run a 4 runner rear 5 link as I know I can get it legal. However going from this.



To this.



Will be huge improvement, the coil rear of the runners rides so much nicer on road also. Basically the main objective is to get improved travel offroad, better ride on and still be able to tow the trailer when needed.

Also remember in Oz most people are converting from leafs to coils, leafs are actually expensive to get working properly compared to coils. I know in the states that leafs are very popular and there are a mountain of kits available.
98 Hilux SR5 35s on 17s Locked front and rear. Lifted with a Lexus V8

Offline boof

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Re: 98 Hilux Sr5
« Reply #11 on: March 13, 2007, 08:00:45 PM »
Updates on the tray.

Brooks waiting on some gear so not much has happened.





Started the plates that will follow the flare onto the tray so it tends to blend the 2 together a bit more

98 Hilux SR5 35s on 17s Locked front and rear. Lifted with a Lexus V8

Offline boof

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Re: 98 Hilux Sr5
« Reply #12 on: March 13, 2007, 08:01:27 PM »
The towbar with recovery eyes that are part of the chassis mounting plates.









98 Hilux SR5 35s on 17s Locked front and rear. Lifted with a Lexus V8

Offline Smitherz

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Re: 98 Hilux Sr5
« Reply #13 on: March 13, 2007, 10:32:58 PM »
Ah that looks like some fun work you're doing on your rear bed. I like it. I would recommend changing out your rear suspension before you add on all that stuff permanently. No matter what you do with your rear there will be some re-arranging of your spring mounts etc etc. You can easily get springs to flex for those trails. They make hangers that flex and pivot for that purpose. But if you can do that multi-link 4runner swap without too much headache you should. It sounds like you have the shop or shop space to carry out all of the work and I think it would be fun anyways =]  You could definitely make some improvements to the geometry while your doing all of it. Just keep us informed with some pictures and updates, heh.

A friend of mine that makes suspension pieces for lifted trucks has that type of suspension under his wifes Seqouia and he lifted it 4 inches and he's completely happy with it. He towes boats for long distances and drives way fast.
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Offline boof

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Re: 98 Hilux Sr5
« Reply #14 on: March 20, 2007, 03:52:23 PM »
Well we have decided to just run a gen2 4Runner rear coil setup and the Bundera coil front. We will be doing the rear before the tray is finished off also. Hopefully I will get away with just replacing my long range tank with a standard 4Runner one as it will make things easier.

Well not much has happened this week as Brook has been flat out on other peoples trucks but heres a few new pics getting some perspective on how much room will be left on the tray.





98 Hilux SR5 35s on 17s Locked front and rear. Lifted with a Lexus V8