How can I get my chally to handle as good as my 86 Toyota pickup?

Author Topic: How can I get my chally to handle as good as my 86 Toyota pickup?  (Read 7636 times)

Offline rusty dodge

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Re: How can I get my chally to handle as good as my 86 Toyota pickup?
« Reply #30 on: December 14, 2008 - 08:19:57 PM »
Sure, you can make incremental improvements to make things better than stock. I'm sure that is the way to build engines too, right. First an intake and a carb, then a set of headers, then a cam. No? A killer engine is built with a goal in mind and the correct parts right out of the box to make things easier and better matched? Well, why not do the same with the suspension. If your going to dig into it, give your car legs to match its lungs. Its a muscle car, give it a muscle suspension to go along with its killer engine.

I also have to say that mopar handling has only become a widespread hot topic around the last 5 years or so. Prior to that, the very very few people who did build handling mopars regularly jumped into bars sizes around the 1.18 to 1.22 range without hesitation. Mopar even recommended sizes in this range as the baseline for performance handling in the old kit car program. The conservative classification of bars by mopar performance is 35 years old and has typically kept most buyers conservative because very, very, few people know what a wheel rate is and how it compares to other makes and how that relates to how rates have changed over the decade as the public has demanded better handling out of regular cars. While there are probably any number of people out there willing to buy the sport suspension option on their Mazda, not many know that the 500# spring rate that is stock in their daily driver translates to a 275# wheel rate which is almost directly comparable to a 1.12 torsion bar for a B/E body. However, since mopar classifies this bar as HD solo or road racing, a number of people will shy away from it as overkill and then be disappointed that their cool car doesn't give them the same pleasure of driving as their econo-box.

But that is just my opinion.

Well, the original post was how to make his car handle better than an 86 pickup truck. Subjective to each person I guess. I feel my setup is better than that, and I posted my setup that I'm happy with.




Offline Roppa440

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Re: How can I get my chally to handle as good as my 86 Toyota pickup?
« Reply #31 on: December 15, 2008 - 05:30:35 AM »
Sure, you can make incremental improvements to make things better than stock. I'm sure that is the way to build engines too, right. First an intake and a carb, then a set of headers, then a cam. No? A killer engine is built with a goal in mind and the correct parts right out of the box to make things easier and better matched? Well, why not do the same with the suspension. If your going to dig into it, give your car legs to match its lungs. Its a muscle car, give it a muscle suspension to go along with its killer engine.

I don't think any of us were suggestion making "incremental improvements"?
Handling may have become a "hot topic" where you are in the last 5 years but in the rest of the world one of the biggest criticisms of American cars has always been (and still is) their poor handling. TEN years ago I fitted 1" torsion bars, gas shocks, 1-1/8" front sway bar, 3/4" rear bar, chassis connectors, poly bushings, custom rear leaf springs, fast ratio manual steering, etc, etc.

I feel that the suspension is stiff enough like that. I don't circuit race it and I thank God for the seat springs otherwise it would feel hard on my spine driving down roads in poor condition. But, coupled with the lowering and improved weight balance, it handles pretty well.

I have looked very carefully at the components XV have been developing over the last few years and to tell you the truth I think some of it is over the top and really not needed.
In fact I would even go so far to say that most of it seems to be designed for people who can handle their wallet more than their cars. :grinyes:
Dave
1970 Challenger R/T
1997 Jeep Grand Cherokee Limited

Offline drewcrane

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Re: How can I get my chally to handle as good as my 86 Toyota pickup?
« Reply #32 on: December 15, 2008 - 02:04:33 PM »
i also feel that xv stuff is a little to much , i feel it can be kept pretty simple,the steering box can be changed to help ,also the coupler can be changed,the shocks i use an adjustable shock,i am still on my stock r/t torsion bars,the upper control arms i have tubular uca,s,brakes can be upgraded, i use wilwood,s they are much lighter than stock ,ans stop better,wheels 17 x8 inches , i feel i need more tire should have gone with 9 inches in front and 10 inches in back,i have added a leaf from another set ,and dont use a rear sway bar i had a t/a bar on the rear ,but it was way to stiff,but all these things will cost some money, but they are not that hard to install in the car,and will improve the handeling with out going away from the stock geometry,my car handles quite well,i have some vids on you tube and i dont drive the best but i can run with alot of cars that are much newer and modern technology than mine :stirpot: 
« Last Edit: December 15, 2008 - 05:38:21 PM by drewcrane »

Offline LAA66

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Re: How can I get my chally to handle as good as my 86 Toyota pickup?
« Reply #33 on: December 15, 2008 - 05:27:05 PM »
 How do tie rods ends affect handling? Any "give" in that component and what stress level is it subject to relative to the rest of the steering system? 

  I see alot of front end rebuid kits out there and they only include the outers tie rod ends. Would there be a reason for that?  Do the outers wear faster than the inner ones? :clueless:

Offline 73EStroker

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Re: How can I get my chally to handle as good as my 86 Toyota pickup?
« Reply #34 on: December 15, 2008 - 09:31:25 PM »
I used the larger C body tie rods and ends. That is supposed to reduce a small amount of flex. Also I used black poly bushings throughout the entire car - front to rear - and standard sway bars front and rear. Like CP says - max out the caster but that is still not enough. The best way is to use the tubular adjustable uppers and that may happen for me after spring when mine finally gets road tested. Also it is quite surprising how flexible the stock UCAs are when they are in your hands and you twist them. Makes me want to weld strengthening plates on them even now and even in the car.
Barry (Salmon Arm)

Offline Roppa440

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Re: How can I get my chally to handle as good as my 86 Toyota pickup?
« Reply #35 on: December 16, 2008 - 04:38:14 AM »
I've never twisted a LCA (except on an off-road vehicle) and I certainly cannot twist one in my hands.

The flex points for the LCA are the pivot bush and the strut bush in the front of the K-frame. Unless you solid mount those you will always get some movement in the LCA. Plating it is not going to make any difference to the movement in the bushings.

So your best bet is fitting poly bushings to every part of the suspension. If you solid mount them (I had a Mini with solid nylon bushes) it is not only going to feel very rough to drive but you will also start snapping things like the struts.

Larger diameter tie rods are not to eliminate flex. The worry was that a stock tie rod can snap. So some feel a stronger tie rod is a better idea.

Personally I have never snapped a tie rod in my 30 years of driving and (occasionally) racing. All these modifications are doing is adding to the unsprung weight of the car. Something you really need to be going in the opposite direction on.

You can spend a fortune on these modifications. But there is a difference between the world of advertisiing and the real world and unless your name is Lewis Hamilton and it is your "company car" they are not going to make any real difference to you. ;)
Dave
1970 Challenger R/T
1997 Jeep Grand Cherokee Limited

Offline HP2

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Re: How can I get my chally to handle as good as my 86 Toyota pickup?
« Reply #36 on: December 20, 2008 - 05:52:49 PM »
Whoa, you’re reading too much into some of my info and not enough into other parts of it or I’m failing to accurately explain myself. We also are dealing with potentially opposite perspectives here. Quick can be quantified by an e.t. slip. Fast can be measured by trap speed. Handling is g-force, which many people don’t know how to measure, and feel has no means of measure other than each person’s own butt. So, we are kind of in an area that becomes pretty subjective when we talk about how a car feels compared to how it performs.

Let’s go back to the front page. The original poster, despite the title, said his truck wasn't necessarily that much better, but that his car was a slug. So I asked what was HIS definition on handling was, had he altered the weight of the car in any way through mods, and what did he want to spend.

As a result, we got the info that handling should be comparable to a late model performance sedan, the car had no lightweight panels or components, and he was willing to spend a couple of grand to achieve the goal.  Had he posted different responses to those three questions, my reply would have been altered. Lets face it, if you think the stock .88 bars are okay in firmness, (I've seen guys complain that they thought they were too stiff), you have lots of light weight stuff on your car, or a $100 budget, you have to take an entirely different approach.

My recommendation comes from empirical experience, not some one else's testing. The fact that XV’s testing came to the same conclusion as my experience simply supports the 25 years with of experimenting that I have done with mopar suspensions.

Handling may have become a "hot topic" where you are in the last 5 years but in the rest of the world one of the biggest criticisms of American cars has always been (and still is) their poor handling.

I don’t know where you have been, but on the internet, classic mopar handling HAS become a hot topic in the last five years. Five years ago the predominate topics you saw posted on mopar boards were engine and restoration based. Now some of the most visited and responded questions deal with handling or suspensions.This also is actually quite a contradictory statement when you think about it. If one of the biggest criticisms about American cars is handling, then why would an owner interested in setting up the suspension to handle start with a set up that is lacking compared to a host of other cars. 

The only way to compare apples to apples with the variety of suspension set ups out there is through wheel rate. Not everyone is going to know that wheel rates could be the same between and 800# coil spring, a 600# strut and a 1.22 torsion bar. Wheel rates are how you equalize everything since the spring rates are so different. So looking at it that way, a 1.12 torsion bar is around 250# of wheel rate, give or take depending on your source, or the equivalent to many late model performance vehicles. Also, let’s clarify that I’m talking about performance sedans here, not your average grocery getter Honda. This is the range for cars like Audi Sports, BMW M series, Pontiac G8s, or any of the factory boy racer set ups from Subaru or Mitsubishi.

If you “feel” 1” bars are sufficient, great. But then we are dealing with feel, not a quantifiable measurement. XV has provided a lot of research on the stock suspension set up to get around simply saying it “feels good.” They have quantified it with a number and their recommended combos produce handling just shy of 1g, which is comparable to any late model performance vehicle. However, the key to controlling increased wheel rate is to have shocks dialed in to perfectly match the characteristics of the wheel rates. Perhaps this is why you feel that 1” is rough, but I don’t know. This is also the biggest advantage to the XV “kit” is that the rates are perfectly set to control the springs included in the kit.

If your like me and prefer to set up your own parts, then the Afco shocks that XV uses can be purchased seperately from any kit. You can discuss with their techs about the wheel rates, usage, expectations and get pretty darn close to the XV set up, or you can just buy shocks and send them in for revalving until you get things set up. Since that is a pretty time consuming and expensive way to do it, adjustables may be the simplest and cheapest way to go, even if your spring for $200 a shock you would be money ahead.

BTW, shock and tire technology are two areas that have had the biggest gains in performance over the past decade compared to the rest of the suspension set up and are typically the least understood as well. I firmly believe a lot of dissatisfaction with suspension set ups are cheap shocks, but most people freak when told that they need $600-800 worth of shocks to get into the entry level of “premium” when it comes to shocks.  When you compare that to serious performance dampers that are going to run $400 to $600 EACH, then those $40 KYB Gas Adjusts really start to look bush league and you may be able to understand why they may not perform at the levels some expect.

i also feel that xv stuff is a little to much


Drew, I’ve seen pics and photos of your car and it does perform pretty well for having a fairly stock suspended set up. I believe that the significant reductions in unsprung weight provided by the Wilwoods have given you huge gains over many other set ups, even using the stock torsion bars. I also think that you have more body roll than I would want in my vehicle and if you went to a 1” t-bar, would be pretty impressed with the change. That also would put enough front roll couple into the equation that the rear bar would become more effective as well.

One thing worth mentioning that I neglected to hit the original poster with was to ask if any reinforcement had been done to the body? One thing that is of vital importance when moving up to 1 inch plus t-bars is the need to have a good solid uni-body structure to actually use the new rates. Our cars are creeping up on 40 years, and that is a lot of mileage to expect them to put up with and then throw significantly increased wheel rates at them. Much like a house would not be very stable if built on a simple rock foundation without mortor, likewise a good handling car cannot utilize increases in spring and shock rates without reducing flex in the body first. The conception that only race cars need reinforcing also belies the belief that we have made advancements in understanding the rigidity of the vehicle chassis. If you at all want to see how large a problem this is, again refering to XV, go view the video on body flex. This is inherent to every classic mopar and it demonstrates that the body is actually a part of the suspension, which is not good. Even if you don’t step up to increased wheel rates, the reduction of deflection will make stock components feel better and respond quicker while improving over all ride quality, eliminating squeaks and rattles, and allowing doors and windows to open and close easier.

Anyway, this was a pretty long winded response to what essentially boils down to an opinion. But, any one reading can take it or leave it as they wish. I'm just throwing more food for thought out there.

You can spend a fortune on these modifications. But there is a difference between the world of advertising and the real world and unless your name is Lewis Hamilton and it is your "company car" they are not going to make any real difference to you. ;)

In closing, I think this actually sums it up pretty nicely. I’ve said it before, the stock set up can be dialed in to be more capable than probably 80% of the drivers out there can utilize. So at that point I guess it really does become academic whether or not most mods really need to be done any way. Of course, "need" doesn't really make us build 800 horsepower motors either, but a lot of people do that too.


Offline Roppa440

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Re: How can I get my chally to handle as good as my 86 Toyota pickup?
« Reply #37 on: December 21, 2008 - 01:46:40 PM »
I don’t know where you have been, but on the internet, classic mopar handling HAS become a hot topic in the last five years.
[/quote]

Yes. In the USA it has become a hot topic in the last 5 years. What I was saying was that in the rest of the world it has (nearly) always been about handling. Or rather the lack of it on American built (or even just American spec) cars. My involvement in Mopars goes back well before the internet. :lol: I have been modifying cars since the late 70s. Can't say I knew exactly what I was doing back then though. We just fitted "Rally Spec" uprated suspension to our Mk1 and Mk2 Ford Escorts or Cortinas and drove like idiots. :lol2:

You make a lot of good points though and put it across very well. :thumbsup:

PS.
You should feel how stiff my mates Touring Car's suspension is. With all my weight on a fender I can't move it at all. :grinno:
Dave
1970 Challenger R/T
1997 Jeep Grand Cherokee Limited