SW20 TRD springs dimensions

da_force · 10-25-2009, 05:08 PM

Hello everyone!

I would need a big favour from somebody who can help me out on this one.

Situation is that I need some new springs on my SW20. TRD's are the ones aim aiming for. The only problem is my geographical position in this world of ours, and my country's stupid laws about customs taxes

Because of that, the expenses of delivering those springs to my country + the taxes, would come out minimaly doubled, more likely tripled the price.

With that in mind I would like to attempt to fabricate completely new springs, for what I need dimensions of the TRD ones.

This is what I need:

Only note I would like to make is that I would need the euro measure for the spring rates, if it is possible.

So can anyone tell me these dimensions, and accurate spring rates?

Thank you very much!

Best regards and greetings from Zagreb!

Medusa · 10-25-2009, 05:10 PM

Not to say it can't be done, but how exactly do you plan on going about fabricating your own springs?

And I apologize, but I don't have the dimensions.

da_force · 10-25-2009, 05:15 PM

Quote:

Originally Posted by Medusa

but how exactly do you plan on going about fabricating your own springs?

It can be done, not by me alone off course. I know a man that fabricates springs of all types.He has machines, knowledge.. everything...

all that he need's is the data above

Medusa · 10-25-2009, 05:22 PM

Oh oh oh I see. I thought you meant your were going to heat up some steel rod stock and bend it in your garage or something...

I was just a little worried about the methodology. That's pretty cool though, you don't hear about much spring fabrication like that here in America.

Don't Worry, It's Just Me · 10-26-2009, 03:29 AM

wish i could help ya man. I have the TRD springs, but no way to get the measurements you need.

champmr2 · 10-26-2009, 06:58 AM

Maybe going to a TRD distributor asking for them? or a Toyota dealership?

just my two cents.

da_force · 10-27-2009, 06:06 AM

champ I have tought of that, but TRD distributor is no way near my country

If everything fails i could go to a local Toyota car saloon/service, but I'm a bit sketchy about that, because it's a bit hard for me to belive toyota or trd would give me that data just like that... they make money on their product... giving away data to make those springs alows someone else to produce the same thing and make money on it... what is not the reason I need that data in my case

So if anyone here has them off the car I would very much appreciate the help!

Cheers!

Sh0ty · 10-27-2009, 10:36 PM

The springs are progressive, that is to say that they don't have the same spring rate throughout their rate of travel Their spring rate is a function of their current travel (compression). I think you can either get the maximum or average rates here on this board in the MK2 suspension area. Good luck!

da_force · 11-01-2009, 03:22 PM

well anything is better then nothing.... truth to be told, maybe this guy of mine can make progresive springs... if not to the same thing as trd's but close.... heck... it's his lifetime job...

even the measures would help me out a lot.. after.. I could even make up my own spring rate ..

CJMR2T · 11-01-2009, 03:40 PM

Please dont take this the wrong way, but if your guy there knows how to make springs and has the equipment to do so, then he should be able to figure it out based off of the dimensions of your stock springs and some simple math... All that you would neet to know is the spring rate of the stock spring and the TRD spring and the rest can be measured form you stock springs and then calculated to achieve what you want.

da_force · 11-02-2009, 05:00 AM

Quote:

Originally Posted by CJMR2T

Please dont take this the wrong way, but if your guy there knows how to make springs and has the equipment to do so, then he should be able to figure it out based off of the dimensions of your stock springs and some simple math... All that you would neet to know is the spring rate of the stock spring and the TRD spring and the rest can be measured form you stock springs and then calculated to achieve what you want.

Yes that could be true... but the springs that I got on the car when I bought it... were cuted... and the springs on the donor 2 I also got, are so rusty, I even think they are so "f-word" up that the dimensions are off

CJMR2T · 11-02-2009, 10:05 AM

Unless someone has a NEW set of springs, the dimensions are going to be off cause all springs sag. I dont care who made them, they all sag. Its just some sag more then others. Its an inharent property that can not be overcome....

Is there a reason that you are so Gun-ho to use a TRD or a copy of? Can you not get anything else there where ever you are at?? Personally, I think trying to copy the TRD springs is more hassle then what its worth (especially when there are others out there that are just as good) but again, that is just my personal opinion.

CJMR2T · 11-02-2009, 10:08 AM

Oh another problem that was mentioned in a previous post is the simple fact that they are progressive. This makes it extremely hard to accurately measure and copy. Again, adding to the "more hassle then what its worth" point of view.

Sh0ty · 11-03-2009, 12:32 AM

Just go for linear spring rates. Progressive is a compromise to make the car more comfortable for normal driving and stiff for spirited driving at the cost of predictability.

10-25-2009, 05:08 PM	#1 (permalink)
da_force Some Skills Join Date: May 2009 Location: Croatia, Zagreb Posts: 63 Thanks: 1 Thanked 1 Time in 1 Post iTrader Rating: (0/0% )	SW20 TRD springs dimensions Hello everyone! I would need a big favour from somebody who can help me out on this one. Situation is that I need some new springs on my SW20. TRD's are the ones aim aiming for. The only problem is my geographical position in this world of ours, and my country's stupid laws about customs taxes Because of that, the expenses of delivering those springs to my country + the taxes, would come out minimaly doubled, more likely tripled the price. With that in mind I would like to attempt to fabricate completely new springs, for what I need dimensions of the TRD ones. This is what I need: Only note I would like to make is that I would need the euro measure for the spring rates, if it is possible. So can anyone tell me these dimensions, and accurate spring rates? Thank you very much! Best regards and greetings from Zagreb!

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10-25-2009, 05:10 PM	#2 (permalink)
Medusa Cage Fighter Join Date: Sep 2008 Location: Reno, NV Posts: 627 Thanks: 9 Thanked 10 Times in 10 Posts iTrader Rating: (0/0% )	Not to say it can't be done, but how exactly do you plan on going about fabricating your own springs? And I apologize, but I don't have the dimensions.

10-25-2009, 05:22 PM	#4 (permalink)
Medusa Cage Fighter Join Date: Sep 2008 Location: Reno, NV Posts: 627 Thanks: 9 Thanked 10 Times in 10 Posts iTrader Rating: (0/0% )	Oh oh oh I see. I thought you meant your were going to heat up some steel rod stock and bend it in your garage or something... I was just a little worried about the methodology. That's pretty cool though, you don't hear about much spring fabrication like that here in America.

10-26-2009, 03:29 AM	#5 (permalink)
Don't Worry, It's Just Me I'll have skills someday! Join Date: Jun 2007 Location: Minnetonka, MN Posts: 683 Thanks: 18 Thanked 6 Times in 6 Posts iTrader Rating: (3/100% )	wish i could help ya man. I have the TRD springs, but no way to get the measurements you need.

10-26-2009, 06:58 AM	#6 (permalink)
champmr2 No Skills Join Date: May 2009 Posts: 43 Thanks: 2 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	Maybe going to a TRD distributor asking for them? or a Toyota dealership? just my two cents.

10-27-2009, 06:06 AM	#7 (permalink)
da_force Some Skills Join Date: May 2009 Location: Croatia, Zagreb Posts: 63 Thanks: 1 Thanked 1 Time in 1 Post iTrader Rating: (0/0% )	champ I have tought of that, but TRD distributor is no way near my country If everything fails i could go to a local Toyota car saloon/service, but I'm a bit sketchy about that, because it's a bit hard for me to belive toyota or trd would give me that data just like that... they make money on their product... giving away data to make those springs alows someone else to produce the same thing and make money on it... what is not the reason I need that data in my case So if anyone here has them off the car I would very much appreciate the help! Cheers!

10-27-2009, 10:36 PM	#8 (permalink)
Sh0ty Cage Fighter Join Date: Aug 2008 Location: Novi, MI Posts: 368 Thanks: 14 Thanked 18 Times in 18 Posts My Google Map iTrader Rating: (3/100% )	The springs are progressive, that is to say that they don't have the same spring rate throughout their rate of travel Their spring rate is a function of their current travel (compression). I think you can either get the maximum or average rates here on this board in the MK2 suspension area. Good luck!

11-01-2009, 03:22 PM	#9 (permalink)
da_force Some Skills Join Date: May 2009 Location: Croatia, Zagreb Posts: 63 Thanks: 1 Thanked 1 Time in 1 Post iTrader Rating: (0/0% )	well anything is better then nothing.... truth to be told, maybe this guy of mine can make progresive springs... if not to the same thing as trd's but close.... heck... it's his lifetime job... even the measures would help me out a lot.. after.. I could even make up my own spring rate ..

11-01-2009, 03:40 PM	#10 (permalink)
CJMR2T Fabricator Join Date: Oct 2009 Location: Florida Posts: 128 Thanks: 1 Thanked 7 Times in 6 Posts iTrader Rating: (0/0% )	Please dont take this the wrong way, but if your guy there knows how to make springs and has the equipment to do so, then he should be able to figure it out based off of the dimensions of your stock springs and some simple math... All that you would neet to know is the spring rate of the stock spring and the TRD spring and the rest can be measured form you stock springs and then calculated to achieve what you want.

11-02-2009, 10:05 AM	#12 (permalink)
CJMR2T Fabricator Join Date: Oct 2009 Location: Florida Posts: 128 Thanks: 1 Thanked 7 Times in 6 Posts iTrader Rating: (0/0% )	Unless someone has a NEW set of springs, the dimensions are going to be off cause all springs sag. I dont care who made them, they all sag. Its just some sag more then others. Its an inharent property that can not be overcome.... Is there a reason that you are so Gun-ho to use a TRD or a copy of? Can you not get anything else there where ever you are at?? Personally, I think trying to copy the TRD springs is more hassle then what its worth (especially when there are others out there that are just as good) but again, that is just my personal opinion.

11-02-2009, 10:08 AM	#13 (permalink)
CJMR2T Fabricator Join Date: Oct 2009 Location: Florida Posts: 128 Thanks: 1 Thanked 7 Times in 6 Posts iTrader Rating: (0/0% )	Oh another problem that was mentioned in a previous post is the simple fact that they are progressive. This makes it extremely hard to accurately measure and copy. Again, adding to the "more hassle then what its worth" point of view.

11-03-2009, 12:32 AM	#14 (permalink)
Sh0ty Cage Fighter Join Date: Aug 2008 Location: Novi, MI Posts: 368 Thanks: 14 Thanked 18 Times in 18 Posts My Google Map iTrader Rating: (3/100% )	Just go for linear spring rates. Progressive is a compromise to make the car more comfortable for normal driving and stiff for spirited driving at the cost of predictability.