TRD lowering springs bottomed out? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

that_one_guy · 03-24-2015, 05:47 PM

Hey everyone, I did a quick search and couldn't find any answers or close up pics so I'm asking here.

I bought some TRD springs pre assembled on OEM shocks. When installed recently, I noticed both rears have about 6 coils at the top of the spring fully compressed on level ground with no extra weight in the rear.

It doesn't seem normal to have the springs completely compressed like this, has anyone with TRD lowering springs had this issue? Can anyone think of a possible cause of the problem or fix for it?

Createddeleted · 03-24-2015, 05:52 PM

That part of the spring is used like a helper/tender spring. It makes up the slack in the assembly.

wparsons · 03-24-2015, 06:10 PM

100% normal, just there to take up space so the spring doesn't move around with the car in the air.

Koa · 03-24-2015, 06:18 PM

lol

that_one_guy · 03-24-2015, 06:43 PM

Apparently this was a pretty dumb question, but if somebody can school me a bit further; These aren't off road vehicles that require 6+ inches of wheel travel, yet every car I've had will raise 4ish inches before the wheels leave the ground when lifting with a floor jack. What is the purpose of having the wheels sitting on 2-3 more inches of travel beyond what the rest of the spring can offer? I don't know if that made sense...

Basically, what is the point of this design if a portion of the spring can expand but not compress under normal load?

Tcoat · 03-24-2015, 07:57 PM

Quote:

Originally Posted by that_one_guy

Apparently this was a pretty dumb question, but if somebody can school me a bit further; These aren't off road vehicles that require 6+ inches of wheel travel, yet every car I've had will raise 4ish inches before the wheels leave the ground when lifting with a floor jack. What is the purpose of having the wheels sitting on 2-3 more inches of travel beyond what the rest of the spring can offer? I don't know if that made sense...

Basically, what is the point of this design if a portion of the spring can expand but not compress under normal load?

Less spring to travel means less flex and a firmer more stable platform.

8R6 · 03-24-2015, 08:53 PM

cut off 4 coils and you get a "free" 2-inch drop

Racecomp Engineering · 03-24-2015, 09:31 PM

Quote:

Originally Posted by that_one_guy

Apparently this was a pretty dumb question, but if somebody can school me a bit further; These aren't off road vehicles that require 6+ inches of wheel travel, yet every car I've had will raise 4ish inches before the wheels leave the ground when lifting with a floor jack. What is the purpose of having the wheels sitting on 2-3 more inches of travel beyond what the rest of the spring can offer? I don't know if that made sense...

Basically, what is the point of this design if a portion of the spring can expand but not compress under normal load?

These cars just don't have much bump travel.

When lowering the car with springs, you trade bump (compression) travel for droop (extension) travel.

- Andy

wparsons · 03-24-2015, 09:46 PM

You need droop travel to keep the tires on the pavement as the car goes over bumps, undulations, etc.

03-24-2015, 05:47 PM	#1
that_one_guy Senior Member Join Date: Oct 2012 Drives: none Location: CA Posts: 437 Thanks: 46 Thanked 368 Times in 145 Posts Mentioned: 18 Post(s) Tagged: 2 Thread(s)	TRD lowering springs bottomed out? Hey everyone, I did a quick search and couldn't find any answers or close up pics so I'm asking here. I bought some TRD springs pre assembled on OEM shocks. When installed recently, I noticed both rears have about 6 coils at the top of the spring fully compressed on level ground with no extra weight in the rear. It doesn't seem normal to have the springs completely compressed like this, has anyone with TRD lowering springs had this issue? Can anyone think of a possible cause of the problem or fix for it?

03-24-2015, 08:53 PM	#7
8R6 Senior Member Join Date: Jan 2014 Drives: FRS Location: SoCal Posts: 2,086 Thanks: 2,738 Thanked 1,338 Times in 746 Posts Mentioned: 30 Post(s) Tagged: 2 Thread(s)	cut off 4 coils and you get a "free" 2-inch drop __________________ Team BRG inspire-usa My car build #8R6

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03-24-2015, 05:52 PM	#2
Createddeleted Senior Member Join Date: Mar 2014 Drives: 2014 BRZ - 2004 GLI Location: Texas Posts: 328 Thanks: 255 Thanked 228 Times in 122 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	That part of the spring is used like a helper/tender spring. It makes up the slack in the assembly.

03-24-2015, 06:43 PM	#5
that_one_guy Senior Member Join Date: Oct 2012 Drives: none Location: CA Posts: 437 Thanks: 46 Thanked 368 Times in 145 Posts Mentioned: 18 Post(s) Tagged: 2 Thread(s)	Apparently this was a pretty dumb question, but if somebody can school me a bit further; These aren't off road vehicles that require 6+ inches of wheel travel, yet every car I've had will raise 4ish inches before the wheels leave the ground when lifting with a floor jack. What is the purpose of having the wheels sitting on 2-3 more inches of travel beyond what the rest of the spring can offer? I don't know if that made sense... Basically, what is the point of this design if a portion of the spring can expand but not compress under normal load?

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