Why can't TEMS shocks be rebuilt?

suprabad

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Jul 12, 2005
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Yeah I know, cause they suck...beat you to it.

But seriously, I'm not an expert on shock rebuilding. I have heard over and over that the tems cannot be rebuilt or revalved or anything.

Could someone explain to me why?

My koni's are shaking my teeth loose. I miss the adjustability of the tems. I just wish I could get them revalved and rebuilt to be stiffer and run them with eibach springs. And before anyone says it, yes, I'm aware of tokico's but I've owned them and they suck! I wasn't that impressed when they were new and they wore out fast. Also I've heard the tein w/ cockpit adjust aren't so hot either.

Don't know what to do it seems like you have two choices...mushy or hard as a rock. Any Ideas
 

suprageezer

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Aug 27, 2005
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I read this post and the original question was never answered. I as well as many in the past wondered this also and would love to see some input by the longtime Supra Gurus. I would like to know if anyone has ever tried or asked a shock rebuilder for a quote. I just goggled Shock Rebuilding and e-mailed the following request. So if you have some time do some goggling then e-mail anyone you find that might be interested. I even e-mailed some Ferrari, Porsche, and BMW shock rebuilders. If we all give it a shot we just might get someone interested in rebuilding TEMS. If were lucky we might find someone that's interested just for a challenge. We'll worry about price later; first we need to know if any shock Rebuilding Gurus can even rebuild them. Feel free to use the e-mail I made, just add your name.

Hello,
I have a 1989 Toyota Supra with Toyota Electronically Modulated Shocks (TEMS). I am looking for a company that can rebuild them. I am a member of a huge Supra forum and I've seen thousands of Supra owner’s switch to after-market shocks then complain about the loss of their TEMS system. If I could find a company that could rebuild the TEMS shocks I could post this all over the Supra Community and get allot of business steered toward that company. If you are capable of rebuilding TEMS please e-mail me back.

Thank You

So & So
 

suprabad

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Jul 12, 2005
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suprageezer said:
I read this post and the original question was never answered. I as well as many in the past wondered this also and would love to see some input by the longtime Supra Gurus. I would like to know if anyone has ever tried or asked a shock rebuilder for a quote. I just goggled Shock Rebuilding and e-mailed the following request. So if you have some time do some goggling then e-mail anyone you find that might be interested. I even e-mailed some Ferrari, Porsche, and BMW shock rebuilders. If we all give it a shot we just might get someone interested in rebuilding TEMS. If were lucky we might find someone that's interested just for a challenge. We'll worry about price later; first we need to know if any shock Rebuilding Gurus can even rebuild them. Feel free to use the e-mail I made, just add your name.

Hello,
I have a 1989 Toyota Supra with Toyota Electronically Modulated Shocks (TEMS). I am looking for a company that can rebuild them. I am a member of a huge Supra forum and I've seen thousands of Supra owner’s switch to after-market shocks then complain about the loss of their TEMS system. If I could find a company that could rebuild the TEMS shocks I could post this all over the Supra Community and get allot of business steered toward that company. If you are capable of rebuilding TEMS please e-mail me back.

Thank You

So & So


THANK-YOU!!!!


I can never get a straight answer on this! Everyone says they cannot be rebuilt...why? Cause the factory doesn't do it?

So What? Just cause the factory can't (more likely won't) doesn't mean it can't be done. Or at least give us an explanation.

ANYBODY???

I have yet to run into anyone who can explain WHY these shocks can't be rebuilt. I always run into the same thing "Oh you just can't rebuild them". When I ask why, I get, " 'Cause you can't".

Ahhh....yeah....that clears it up...not!

So I'm asking again,

WHY CAN'T TEMS BE REBUILT???





:aigo:
 

PROJECT N00b

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May 22, 2005
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well think about it. im no genius but if you plan on rebuilding it, youre going to have to change out the electronics and find a way to put gas back into the shocks, not even that how the fuck are you going to pull them apart? i dunno thats just me.
 

Clied

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Jun 8, 2006
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For the money I think you would spend rebuilding them you can just buy some kyb gr2's. There great.:icon_bigg
 

suprabad

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MKIII N00b said:
im no genius but if you plan on rebuilding it,

youre going to have to change out the electronics? i dunno thats just me.

WTF are you talking about??? "...going to have to change out the electronics" ???? Are you fucking retarded? (I'm not being sarcastic, I want to know.)

You obviously don't have anything to contribute to this thread (other than to inform us and demonstrate that you're "no genius"), which I'm sure will come as a shock to everyone.

Alot of people are interested in this and would like to have some answers.

Regurgitating rhetoric that you've heard and don't understand isn't helpful.
If I feel like listening to a smartass with a big mouth I'll rent a David Spade movie.
 
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suprabad

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Clied said:
For the money I think you would spend rebuilding them you can just buy some kyb gr2's. There great.:icon_bigg

You're missing the point. They aren't TEMS compatible. I've got koni's (for every day use they're a little hard).
I want TEMS compatability without the tokico harsh ride and non-durability.

Is it just me, or does this seem like this is a really hard to get answer?
 
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Jeff Lange

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Mar 29, 2005
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Suprabad, settle down, there's no need to be so abrasive. Generally speaking, people aren't that concerned with keeping TEMS, so it really hasn't been researched very thoroughly, in fact, this is one of the first threads I've seen regarding the issue of rebuilding/changing valving of the stock shocks.

MKIII N00b, there are no electronics in the shocks, the TEMS actuator simply changes the position of the selector on the top of the shock.

I think TEMS is a really neat system, and it's pretty cool too, but on the other hand, I always left it set on sport mode when I did have them, and now that I've got Tein Flex coilovers, I've adjusted the ride height to where I want them, and I've got the dampers set where I like them as well, and haven't really touched the adjustments much since then, except to experiment.

I'm sure there is someone out there that can rebuild TEMS shocks, after all, if someone can build them, they can be disassembled and rebuilt. That being said, I wish you all the best in getting it done, but don't expect too many people to be interested in it, not when there are so many other aftermarket options that people seem to like to go with.
 

suprageezer

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Aug 27, 2005
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If you do some Shock Rebuilding search’s on Goggle you'll find many shocks are rebuilt. Gas no problem, there are many Bilstien and Koni Gas shock rebuilders. Then there are the companies that rebuild shocks for just about every classic car foreign and domestic. I for one would rather have my TEMS rebuilt when they are done than buy some stiff as crap off the shelf Shock. I'm like Suprbad I just don't understand all the input from guessors and naysayors when the entire Supra community would benefit from finding someone with Shock Rebuilding expertise willing to take TEMS on. Personally I love my TEMS; I have the caddy smooth ride, push a button and have a firm ride. In the future when our cars are considered a classic and believe me they will be one day many of us the still have our MKIII's will go through the back to original condition restoration mode, not all but some, it happens with all classics foreign and domestic. There was once a day not too far back when NO one in their right mind would do anything but restore to original condition, but today to see many restomodifieds going for more money than original condition restos. Besides it doen't hurt to want something and try to get it.

Thanks Jeff that's Great input. I too leave mine on firm most of the time and hit soft when I see speed bumps coming up. It seems to feel better to my chassis going over speeds bumps on the soft setting than the boink I feel when they are on firm.
 

johnathan1

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Aug 19, 2005
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I think this is a great idea. I would love to have the Durability and adjustability of the stock TEMS shocks, if there were some way of making them more reliable when used with lowering springs?

And I can't say anything about the ride quality of the stock TEMS shocks, because on both of my supras, the stock shocks were ALL blown by the time I got the car. :( So they just had a super-mushy floaty bouncy feel...I have the KYB GR-2's now, and that definitely stiffened things up, but not overly stiff, they are still comfortable for long trips...but I really would like to have the adjustability again.
 

Piratetip

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suprabad,
TEMS compatible Tokico Illumina gas shocks cannot be rebuilt. Although it may be possible to take apart the unserviceable sealed caps. You sill would have to locate replacement seals, adjuster, shutter valve, oil and then somehow put backtogether with a nitrogen charge. These are factory build shocks not meant to be rebuilt. Your best bet is to get new replacements.

Illumina Series
http://www.hitachi-hap-la.com/TokicoGasShocks/products/illumina/

http://www.hitachi-hap-la.com/TokicoGasShocks/app/25a.html
Front: EU3634
Rear: EU3635

Read this thread for more info if you wish.
http://forums.celicasupra.com/showthread.php?t=28329
CJSREDPRA talks about trying to get a set for a MKII rebuilt through Tokico USA Direct. Basically not a chance.

Hope this helps.
 

suprageezer

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Were the Original Stock Toyota TEMS shocks made by Tokico? If not anyone know who did manufacture them? I know KYB made many Stock shocks for both cars and motorcycles coming from Japan.