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Swapping NA to TT Suspension

1223 Views 21 Replies 7 Participants Last post by  RemixPinoY
Hello all, anyway I currently am running about 114k miles on my NA. Any as some of you may have experienced my rears are going out. The back is currently sagging, the front is higher up in comparison. And right now my back left is the worst, it's causing my 19 to rub when ever the car is cornering or taking dips on bumps and drive ways. So I picked up a set of stock TT springs and shocks from a former member here. Only cost 100 bucks and has about 45,000 miles on it, not bad. Anyway I want to know if I do swap the current suspension I have with this will I run into any problems? Will all the current parts I have fit with this "new" stuff? I know the TT suspension is similar, are the shocks the same? It's just the springs and the spring rate that are different right? Will this suspension be a nice improvement over the stock NA? Or are they pretty much the same?

Also does the TT suspension sit any different than the stock NA's? Is it lower, higher, or the same height?

And I'm wondering what else can I do to improve the cars feel and handling? Strut tower bars are cheap and I'm wondering if adding these will be a good upgrade, especially since mine doesn't come with one when the TT did. Or will that be overkill for the stock suspension. And is it worth getting, did it add a marginal difference? And I also know that TRD braces won't fit because the intake manifold will hit it correct? And that cusco will fit?

I'm also currently adding an audio system, and it will be covering the area the strut bar will probably be, so what I want to also know is that with all the current aftermarket struts out there, will they all be the same in terms of fitments? Knowing that the TRD and Cusco are different in the front are the rears the same?

Thanks all.
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I'm not sure but TT suspension on a SC lowers it. It might be different on supras.
You swapped your SC to TT's? How much of a gap did your SC have versus the TT?
The main difference between the TT and NA suspension is the rear control arms. The TT upper rear control arms had larger bushings that seem to last longer than the NA pieces. Anyone with an NA car can tell you that somewhere around 100K miles the rear upper bushings shift in the control arms and start to cause a squeaking noise that is horribly annoying, and only gets worse when swapping the TT engine into the NA chassis. The NA rear bushings are the same as a SC300. Everything will swap from a TT to an NA car as far as the suspension pieces go. The height should be the same between the two cars.
Ahhh so when I swap this set should I be switching my bushings? Mine haven't squeaked yet and when I looked under my car everything looked new ironically. It's just suspension is just sagging so it's aged well. How much do bushings go for usually? And damn I really wish I could of afforded a new suspension set up, something along the lines of a gixxerdrew set up.
Ahhh so when I swap this set should I be switching my bushings? Mine haven't squeaked yet and when I looked under my car everything looked new ironically. It's just suspension is just sagging so it's aged well. How much do bushings go for usually? And damn I really wish I could of afforded a new suspension set up, something along the lines of a gixxerdrew set up.
Well...the rear bushings aren't sold separate from the control arms by Toyota. The control arms are about $221 from our sponsor vendors. This bushing issue only hits the 93-95 cars...after that all the Supras had the same upper rear control arm. MVP sells a poly bushing set, but if you want things quiet, I'd opt for the factory setup. Bushings won't make the car sag...that's all in the springs. So if your bushings don't make noise, change out the springs and have a reputable alignment shop check the bushings while their doing an alignment. The factory bushings have a steel sleeve and when the bushings wore out they shifted in the control arm (forward) causing the sleeve to rub against the sub frame...creating the squeaking sound.
Thanks ra24man. But wow that really does suck unfortunately. And yes I'd like to keep things quiet so stock would be best. So the control arms do come with bushings if I did order? And if I did, would I ask for the TT versions? Or would the after 96 versions all be the same regardless. In any case yeah I'll have an alignment shop take a look then or I'll ask my cousin as I'm not experienced in these matters. I haven't squeaked yet luckily, it's just my brakes that do that so far. Thanks agian.

Oh and what do you think about performance in terms of handling will I see a definite improvement or is NA very similar to TT in terms of feel, turning, ride quality and etc? And do you know when the stock suspension on these cars typically become worn down? Will this 45k mile suspension I have currently last for another 40-50k miles?
Thanks ra24man. But wow that really does suck unfortunately. And yes I'd like to keep things quiet so stock would be best. So the control arms do come with bushings if I did order? And if I did, would I ask for the TT versions? Or would the after 96 versions all be the same regardless. In any case yeah I'll have an alignment shop take a look then or I'll ask my cousin as I'm not experienced in these matters. I haven't squeaked yet luckily, it's just my brakes that do that so far. Thanks agian.

Oh and what do you think about performance in terms of handling will I see a definite improvement or is NA very similar to TT in terms of feel, turning, ride quality and etc? And do you know when the stock suspension on these cars typically become worn down? Will this 45k mile suspension I have currently last for another 40-50k miles?
It should...my car had Tein coilovers in it when I got it, so I can't comment on a ride difference. As for how long the stock springs last...dunno. Most times they are ditched in favor of something aftermarket long before they're useful life is up. I know people complain about the 97-98 TT cars being real soft. Toyota did change the spring rates in those cars. If you order the upper rear control arms from a Toyota dealer, the NA's have been superceeded to the TT ones, so they've got you covered there, and yes...they come with new bushings installed.
The spring rates and shock rates are stiffer in the TTs, and the rear sway bar from the TT is bigger too.

I would stay away from cheap strut tower bars, the cheap ones I've seen that fit these cars in the front are really poorly designed and look like they would flex alot. Theres so much bracing in the rear bodywork already that I doubt a rear bar would make any noticable difference.
Okay I guess I'll get cusco ones in the front then and then later on replace the rear one just in case. And I will order new control arms eventually, my bushings are okay right now. And would changing this make a world of a difference in feel of the car? I could aways go aftermarket someday if I want a stiffer ride but I don't want that right now.
I put on Tein SS's and Front Strut Bar (Mainly for looks to be honest) and never looked back. The only thing I could do more is get the TT Sway Bars or TRD's. But from what I heard it doesn't help all that much when you go aftermarket coilovers.
The spring rates and shock rates are stiffer in the TTs, and the rear sway bar from the TT is bigger too.
Would you happen to know the spring rate differences?, I can't find any info on the na springs/shocks and they look like the TT ones to me.
Ahh so strut bars don't do much with aftermarket set up's?
vlamos makes oem-stiffness replacement bushings for our cars :).
But do they make excessive noise or are they like stock? And is ride harsh?
But do they make excessive noise or are they like stock? And is ride harsh?
No excessive noise. They will last longer than stock bushings AND ride just as comfortable :). They're made out of a rubber-type material and are NOT poly-urethane material. So, the vlamos ones will be much quieter :).
No excessive noise. They will last longer than stock bushings AND ride just as comfortable :). They're made out of a rubber-type material and are NOT poly-urethane material. So, the vlamos ones will be much quieter :).
Those look like the real deal! Too bad they cost so much! BTW...I can tell you from personal experience...the replacement of these bushings is a major pain in the ass. My buddy owns a shop that specializes in suspension repair and it took a fair amount of time to do that job
How much are they for a set of four? And the control arms shouldn't have to be replaced right? And I thought poly urethane is nice, but I Guess rubber is better for suspension right? Could I have links please?

BTW ra24man, are the control arms 221 per piece or for the whole set? Or 221 for the front and another 221 for the rear?
How much are they for a set of four? And the control arms shouldn't have to be replaced right? And I thought poly urethane is nice, but I Guess rubber is better for suspension right? Could I have links please?

BTW ra24man, are the control arms 221 per piece or for the whole set? Or 221 for the front and another 221 for the rear?
http://www.vftbushes.com/

$1140 AUD for a complete set. OUCH!

$221 was per upper rear control arm. Remember, if you rebush your arms, you don't replace the ball joints. I've never heard of anyone having issues with ball joints in a MkIV before, but hey who knows? The ball joints are part of the control arm and not available seperate as well. I did a little research on suspension costs a while back, but I'll be damned if I can remember what the total cost was. Just north of $2600 at retail prices so about $1800 at sponsor vendor pricing. That just the main pieces...upper and lower control arms front and rear, and rear links and strut rods. Pricey, but if you're having a shop do them, it'll cost three or four times more than just replacing with new arms from a labor standpoint if they know what they're getting into.
I can just get help from my cousin and etc if I ever did this. But hmmm 1140 AUD? How much is that USD?
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