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03-06-2017, 07:06 AM | #1 |
Drives: 2007 yaris HB Join Date: Mar 2016
Location: Barrie Canada
Posts: 690
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Rear loweing springs when up on hoist?
I remember when I installed the rear springs that were kinda loose when backend was on jacks.
Didnt give it much thought as the springs are tight inplace when on the ground. I will be getting engine/gearbox oil change done today(free oil change but I supply the gear oil only gift certificate) Will the springs shift around when up on the hoist and is this something for the mechanic(Toyota) to be aware of? Hope this is not another one of my nonsensical questions again. |
03-06-2017, 07:24 AM | #2 |
Drives: 07 yaris hatchback Join Date: Dec 2016
Location: Nahant M.A
Posts: 265
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Well the back should stay in place I just put the Trd one on Saturday drop 1.2 " they war fine no movement and I lift the car couple of times on less is really drop drop
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03-06-2017, 07:25 AM | #3 | |
Drives: 2007 yaris HB Join Date: Mar 2016
Location: Barrie Canada
Posts: 690
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Quote:
Mind sharing pic of drop+wheel tire combo info |
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03-06-2017, 07:27 AM | #4 |
Drives: 07 yaris hatchback Join Date: Dec 2016
Location: Nahant M.A
Posts: 265
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Why they war loose ? The u put back the rubber pieces back?
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03-06-2017, 07:29 AM | #5 |
Drives: 2007 yaris HB Join Date: Mar 2016
Location: Barrie Canada
Posts: 690
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03-06-2017, 07:48 AM | #6 |
Drives: 2007 2-door hatchback Join Date: Jul 2016
Location: USAnotCA
Posts: 750
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lowering springs
no problem...they'll only fall out if you catch air.
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03-06-2017, 08:07 AM | #7 |
Drives: 06 Polar White 5dr, 13 Soul 4u Join Date: Oct 2008
Location: Georgetown, Ontario, Canada
Posts: 5,762
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I've been here almost 10 years and nobody has ever posted an issue relevant to your concern. The only time anything remotely close came up was one member who ran ridiculously short Sprint springs that easily came loose of the perches when load was taken off the rear wheels. He used heavy duty cable ties to secure springs to lower perch. If you do need piece of mind, there in lies your solution.
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03-06-2017, 09:23 AM | #8 |
Drives: '08 2zr swapped Vios M/T Join Date: Oct 2012
Location: Caledonia Ont.
Posts: 2,938
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When I fully extend the rear suspension on the rear of my car using a jack the spring are somewhat "loose" but even then I can't just easily pull them out. Never had any issues on the road
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No one ever wants to give a Yaris the point by... |
03-07-2017, 07:53 PM | #9 |
Drives: NCP91 Join Date: Jul 2012
Location: Markham, Ontario, Canada
Posts: 114
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Your rear dampers are not short enough for your chosen spring.
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03-07-2017, 07:55 PM | #10 |
Drives: 2007 yaris HB Join Date: Mar 2016
Location: Barrie Canada
Posts: 690
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03-07-2017, 08:26 PM | #11 | |
Drives: NCP91 Join Date: Jul 2012
Location: Markham, Ontario, Canada
Posts: 114
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Quote:
A lowering spring (which is shorter) can sometimes free-float when the wheels leave the ground if the damper's full extension can't contain it. This more often happens when lowering springs are installed without upgrading the damper to something shorter. They are sometimes called shock absorber in USA. I've long given up regionalised slang in favour of the international engineering standard... in this case, it's real name is a damper. Sorry for the confusion! |
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03-07-2017, 08:31 PM | #12 | |
Drives: 2007 yaris HB Join Date: Mar 2016
Location: Barrie Canada
Posts: 690
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Quote:
The only time my wheels will be leaving the ground is when its jack/hoisted so it shouldint be a problem then. I dont drive agressivly or do over the speed limit either.I drive my car like grandma.Never understood the need to speed or drive aggressivly. I will rephrase:I understand why people speed and drive aggressivly but its not for me. |
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03-08-2017, 08:32 AM | #13 |
Drives: 2007 2-door hatchback Join Date: Jul 2016
Location: USAnotCA
Posts: 750
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Yaris rear strut struts damper spring rebound stop
Lux. regarding correct terminology. Wouldn't the piece in OP's car needing shorter full-extension be considered a strut that combines functions of motion axis restriction (helps keep wheel pointed straight and only able to move approximately up and down), damping, and rebound stop/cushioning...where if one could get into the thing, all that would be required is getting some spacering under the rebound stop?
Once upon a time some racer guys might have installed a rebound strap (length or loop of woven thread) at each side to limit/adjust rebound travel? |
03-08-2017, 12:29 PM | #14 | |
Drives: NCP91 Join Date: Jul 2012
Location: Markham, Ontario, Canada
Posts: 114
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Quote:
In the case of Yaris rear torsion beam suspension, the damper will only control the speed and travel of jounce and rebound. Lateral and thrust location are the duty of the torsion beam bushings. Toe and camber are fixed because the torsion beam and its mounts are not adjustable, but they will change in fixed amounts as the beam travels up or down. You're right in that there are ways to jerry-rig a rebound stop, including rebuilding the damper with more shims (to limit its extended length) and tighter valves (to slow and stiffen its rate). Unfortunately, there are no notable or unique characteristics of the stock damper to make it worthwhile, so, generally, total replacement is more suitable and far less expensive. |
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