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Old 10-21-2019, 10:49 AM #31
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My last set looked like this:

They're due again. I just haven't had time to do it. Unfortunately it's looking like I'm going to have to cut them out again. I loaded them up with anti-seize, and it seemed to work pretty well at first. I had them out last fall, but this fall they're just totally seized again. I bought some rubber boots that totally cover the entire lower area and I'm going to try them next and fill with grease to see if that helps.
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Old 10-21-2019, 02:34 PM #32
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Originally Posted by Jetboy View Post
Also if you don't reset the zero point expect rear brakes to wear faster due to b the portioning being off.
Sorry, can you explain what you're talking about here?
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Old 10-21-2019, 05:47 PM #33
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Quote:
Originally Posted by brtnstrns View Post
Sorry, can you explain what you're talking about here?
Brake pressure is split front/rear. Prior to modern electronics almost all vehicles had brake proportioning valves attached to the rear suspension. More weight on the rear compressed the rear suspension and a lever would automatically adjust the amount of brake pressure to the rear axle. So if you had more weight - more of the braking would be done by the rear - where the weight was.

I'm not an expert on the brake system in the 4Runner but I am reasonably confident that it performs the same brake proportioning through the vehicle pitch (rake). The 4Runner has a set of sensors that measure pitch, yaw, tilt, etc. You can reset the "zero point" that is a baseline for the ECU when empty. If you don't do that - and you "level" your 4Runner, it thinks you have a few hundred lbs of cargo in the back all the time. Then the driver complains that the rear brakes were worn out in 30k miles. It's a result of the 4Runner thinking you're hauling a bunch 4-600lb of cargo all the time and using the rear brakes much more than it should be. It can also cause issues with VSC engagement and other safety features that rely on the pitch as an input to determining vehicle loading and predicting behavior.

This is how to do it:
Zero Point Calibration question
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Old 10-21-2019, 06:46 PM #34
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Quote:
Originally Posted by Jetboy View Post
Brake pressure is split front/rear. Prior to modern electronics almost all vehicles had brake proportioning valves attached to the rear suspension. More weight on the rear compressed the rear suspension and a lever would automatically adjust the amount of brake pressure to the rear axle. So if you had more weight - more of the braking would be done by the rear - where the weight was.

I'm not an expert on the brake system in the 4Runner but I am reasonably confident that it performs the same brake proportioning through the vehicle pitch (rake). The 4Runner has a set of sensors that measure pitch, yaw, tilt, etc. You can reset the "zero point" that is a baseline for the ECU when empty. If you don't do that - and you "level" your 4Runner, it thinks you have a few hundred lbs of cargo in the back all the time. Then the driver complains that the rear brakes were worn out in 30k miles. It's a result of the 4Runner thinking you're hauling a bunch 4-600lb of cargo all the time and using the rear brakes much more than it should be. It can also cause issues with VSC engagement and other safety features that rely on the pitch as an input to determining vehicle loading and predicting behavior.

This is how to do it:
Zero Point Calibration question
Wow, thanks. I've worked on cars basically since I was a fetus and I never once considered the fact that changing the suspension would have an effect on the brake system. You're also the first person I've seen bring it up since I joined here which is kind of crazy with all the suspension modification threads that pop up on a regular basis.

Appreciate the info.
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Old 10-21-2019, 08:14 PM #35
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Quote:
Originally Posted by Jetboy View Post
My last set looked like this:

They're due again. I just haven't had time to do it. Unfortunately it's looking like I'm going to have to cut them out again. I loaded them up with anti-seize, and it seemed to work pretty well at first. I had them out last fall, but this fall they're just totally seized again. I bought some rubber boots that totally cover the entire lower area and I'm going to try them next and fill with grease to see if that helps.
Yeah, wow that thing is cooked, burnt to a crisp. Mine don't look anything like that, I get a fair bit of briny road driving too (well you know what they do to roads here) What boot did you come across? Curious. The grease packing has been working for me but hey if the boot fits
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Old 12-12-2019, 03:16 PM #36
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Quote:
Originally Posted by Jshen View Post
I've installed the Pro fox on my 15 kdss equipped vehicle for 4000kms now. There is about ~.5" lean, lower on the passenger side. The shocks ride very plush on-road and firms up nicely going higher speeds off-road. Brake dive is minimized significantly.
Jshen, I'm not sure how the TRD Fox are labeled in terms of left to right. But on which side did you install the pre-loaded shock? (I'm assuming it is pre-loaded and not a shorter coil?). Since non-KDSS and KDSS vehicles tend to lean in opposite directions it does make sense to me to swap sides from the typical TRD Pro installation, and to put the preloaded shock on the passenger side to correct for the usual KDSS lean.
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Old 12-12-2019, 03:25 PM #37
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If you like the "plush" ride the TRD Pro has, why would you use a spacer for leveling? Doesn't using spacers on the strut towers to level harshen the ride since now the spring is more compressed?
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Old 12-14-2019, 11:02 PM #38
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Quote:
Originally Posted by ShermanOlsen View Post
Jshen, I'm not sure how the TRD Fox are labeled in terms of left to right. But on which side did you install the pre-loaded shock? (I'm assuming it is pre-loaded and not a shorter coil?). Since non-KDSS and KDSS vehicles tend to lean in opposite directions it does make sense to me to swap sides from the typical TRD Pro installation, and to put the preloaded shock on the passenger side to correct for the usual KDSS lean.
The underside of the bottom spring perch is labeled front left /front right. I never thought to swap sides at the time.

Quote:
Originally Posted by adrummingdude View Post
If you like the "plush" ride the TRD Pro has, why would you use a spacer for leveling? Doesn't using spacers on the strut towers to level harshen the ride since now the spring is more compressed?
There are different designs of spacers. Ones that sit above the coilover don't alter the spring rate. Correct me if I'm wrong guys. But regardless, I'm patiently waiting for eibach as they have something in the works for the pro fox.
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Old 12-15-2019, 02:53 AM #39
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So I have a assembled set of fox shocks and I'm really tempted to take one side apart to see if there's a hidden perch adjustment.... Can I do this with basic coil compressors from the auto store?
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Old 12-15-2019, 09:30 AM #40
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Why donít you just call Fox and ask them?
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Old 12-15-2019, 10:16 AM #41
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Originally Posted by osideplayer View Post
So I have a assembled set of fox shocks and I'm really tempted to take one side apart to see if there's a hidden perch adjustment.... Can I do this with basic coil compressors from the auto store?

If you can wait a couple of days hereís one off of amazon.
Amazon.com: AMPRO T70570 Coil Spring Compressor: Home Improvement



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Old 12-15-2019, 11:10 AM #42
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Why don’t you just call Fox and ask them?
Hmmm I'm not sure their customer call center will know those type of details. They make hundreds of models
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Old 12-15-2019, 11:34 AM #43
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Hmmm I'm not sure their customer call center will know those type of details. They make hundreds of models


They donít. Theyíll tell you that you need to call Toyota and their customer service wont know. They might even tell you to call fox.


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Old 12-23-2019, 01:26 AM #44
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Quote:
Originally Posted by Jshen View Post
But regardless, I'm patiently waiting for eibach as they have something in the works for the pro fox.
I would be interested in this too. Eibach has always made great stuff. Do you have a source for this info?
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Old 12-23-2019, 01:30 AM #45
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I would be interested in this too. Eibach has always made great stuff. Do you have a source for this info?
Ryan from Elbach has has been posting in other threads. They are working with samples tomorrow.
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