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-   -   **Rear Coil Spring Discussion - The Perfect 3rd Gen Rear Spring** (https://www.toyota-4runner.org/3rd-gen-t4rs/281374-**rear-coil-spring-discussion-perfect-3rd-gen-rear-spring**.html)

Tommy854runner 01-17-2020 10:31 AM

What rear spring would be best for about 2-2.5" lift but a soft ride? It won't be off road very much so looking for best ride quality possible. Probably going to run either a 265-75-16 or 285-70-16.

2wheelnut 01-24-2020 05:23 PM

Quote:

Originally Posted by Tommy854runner (Post 3426363)
What rear spring would be best for about 2-2.5" lift but a soft ride? It won't be off road very much so looking for best ride quality possible. Probably going to run either a 265-75-16 or 285-70-16.

I'm in the same boat, so far as I've read up on OME 906's would do it but a little harsh, OME 890s would be good unless you need full droop then they may fall out.

I'm also debating the fronts.

Bought the rig with mish mash of parts. 5100's up front and OME 895s with OME shocks in the rear. Rides like garbage.

Dieselchessy 01-24-2020 08:31 PM

I started to make a spread sheet with all the rear spring options and then decided I was going 890's and I'd change if I don't like it.

890 seems about the best choice for 2.5-3" lift when not carrying lots of weight. Amongst the other 2.5-3" options they seem less likely to fall out.

model/spring rate/wire diameter/free height D/P

OME 2890 190 .591 17.13/16.73
OME 2891 210 0.63 16.53/16.14
OME 2906 220 .669 15.35/14.96

I bought Tundra TRD coils for the front.

4Runner4Leon 01-26-2020 12:00 PM

Quote:

Originally Posted by Dieselchessy (Post 3430941)
I started to make a spread sheet with all the rear spring options and then decided I was going 890's and I'd change if I don't like it.

890 seems about the best choice for 2.5-3" lift when not carrying lots of weight. Amongst the other 2.5-3" options they seem less likely to fall out.

model/spring rate/wire diameter/free height D/P

OME 2890 190 .591 17.13/16.73
OME 2891 210 0.63 16.53/16.14
OME 2906 220 .669 15.35/14.96

I bought Tundra TRD coils for the front.

One thing to note with the numbers above is that these springs won't give the same amount of lift. Using these numbers (which I haven't verified, but assume to be correct), here are the spring heights with 1000 lbs of load:

rate free H H @1000lb
890 190 17.13 11.87
891 210 16.53 11.77
906 220 15.35 10.80

Note that 890 and 891 have about 1" more lift than 906.

I have about a 2" lift with the 906's in my '97 (which is exactly what I wanted), so you'll get closer to 3" lift with the 890/891.

I'm quite happy with the ride with the 906's, I don't find them too stiff at all (and I like comfort, so take that for what it's worth).

Dieselchessy 01-26-2020 01:32 PM

That height at 1000# would be good data to have. Would be nice if all this type data was readily available.

4Runner4Leon 01-26-2020 03:31 PM

Quote:

Originally Posted by Dieselchessy (Post 3431678)
That height at 1000# would be good data to have. Would be nice if all this type data was readily available.

Agreed. It's easy to calculate the expected ride height given the free height and spring rate, but it wouldn't account for progressive springs.

4runnerfiend 01-27-2020 12:39 AM

Quote:

Originally Posted by Tommy854runner (Post 3426363)
What rear spring would be best for about 2-2.5" lift but a soft ride? It won't be off road very much so looking for best ride quality possible. Probably going to run either a 265-75-16 or 285-70-16.

If your rig will not see offroad and will not have tons of weight in the rear then the best ride quality will be oem springs. So... a spacer lift will be your best bet. Daystar makes a 2.5" and a 1.5" spacer for the rear.
Amazon.com: Daystar, Toyota 4Runner 2.5" Rear Lift Kit, fits 1996 to 2002 2/4WD, all transmissions, all cabs KT09108BK, Made in America: Automotive
Amazon.com: Daystar, Toyota 4Runner 1.5" Rear Lift Kit, fits 1996 to 2002 2/4WD, all transmissions, all cabs KT09107BK, Made in America, Black: Automotive

fourfive 01-27-2020 10:34 AM

Quote:

Originally Posted by Dieselchessy (Post 3430941)
I started to make a spread sheet with all the rear spring options and then decided I was going 890's and I'd change if I don't like it.

890 seems about the best choice for 2.5-3" lift when not carrying lots of weight. Amongst the other 2.5-3" options they seem less likely to fall out.

model/spring rate/wire diameter/free height D/P

OME 2890 190 .591 17.13/16.73
OME 2891 210 0.63 16.53/16.14
OME 2906 220 .669 15.35/14.96

I bought Tundra TRD coils for the front.

2.5-3.0" lift sounds about right when I had my 890s. I try to use center hub to fender measurements so that it's easier to establish a baseline for lift. With 890s I was consistently at 22.5-22.75" center hub to fender with a couple hundred pounds of cargo gear. With my Toytec superflex (the ones advertised for 3.75" lift) I sit 23-23.25" with the same amount of cargo weight. They handled similarly & was happy with both. I don't think the coil falling out should be an issue if a proper length shock is used.

For my next front set up I'm considering the Tundra TRD/Tundra bilsteins or Tundra 6112.

HiMiles 01-27-2020 12:06 PM

Quote:

Originally Posted by CT135 (Post 3421686)
So with your bumper/swing out. Roughly how much lift are you getting from the super flex? Hub to fender would be awesome to know.

Here's a picture. This is with Superflex + trimmed OEM top cones. The rear bumper is a 4XI with a swing-out 34" tire and a full jerry can, so fairly heavy.

Hub-to-fender distance is 23.75". Even with the bumper setup, I imagine I'm still short of the 1000lb total load on each spring.

https://i.imgur.com/YNtG3ZRh.jpg

owyheerat 03-07-2020 11:18 AM

Quote:

Originally Posted by rickashay (Post 3422403)
Good discussion. I might have to try the superflex's but I am worried I will be too heavy for them too...

I am just waiting for someone to try the Dobinsons 675V before I make a move.... any takers? lol

Addison,

I'm late to this discussion. I am very interested in this topic though. I currently am running 861's w/ Tokico LC shocks. I love the flex, but wish the ride height was a little lower. Also, they are too stiff.
For reference, I have a Bandit design rear bumper with dual swing outs (which is heavy) and 35" spare, rear storage / sleeping platform, fridge, Rago rear window panels (full) and usually my 70lb golden retriever. So I'm guessing 400+lbs. And the 861's are still too stiff.

Have you made a decision yet?

Is Dobinson the solution?

Thanks

Durwin

rickashay 03-07-2020 03:07 PM

Quote:

Originally Posted by owyheerat (Post 3454685)
Addison,

I'm late to this discussion. I am very interested in this topic though. I currently am running 861's w/ Tokico LC shocks. I love the flex, but wish the ride height was a little lower. Also, they are too stiff.
For reference, I have a Bandit design rear bumper with dual swing outs (which is heavy) and 35" spare, rear storage / sleeping platform, fridge, Rago rear window panels (full) and usually my 70lb golden retriever. So I'm guessing 400+lbs. And the 861's are still too stiff.

Have you made a decision yet?

Is Dobinson the solution?

Thanks

Durwin

No movement on my behalf yet. I have decided to keep my 7 wraps until my Eimkeith rear bumper is on and the F150 fuel tank swap has been completed. Once the weight stabilizes, I will start trying coils.

eimkeith 03-07-2020 03:32 PM

Quote:

Originally Posted by rickashay (Post 3454770)
No movement on my behalf yet. I have decided to keep my 7 wraps until my Eimkeith rear bumper is on and the F150 fuel tank swap has been completed. Once the weight stabilizes, I will start trying coils.

(same here)

Fishwerks 03-09-2020 01:50 PM

I ordered the Dobinson 675V last night.

Once I get them installed and get some drive time with them I will post here.

I was very close to buying the Toytec superflex but they aren't on the website right now (unless the part number changed?).

Wrecked - Rebuilt 03-09-2020 06:13 PM

Definitely keep us posted on how the 675v work for you. I've been in the market for new rear coils for the last year and have been weighing all options.

I currently have the Dobinsons 137v (50mm) for the 4runner/Surf. They are very progressive 170/240/320 ft/lbs and hold weight well, but aren't tall enough with the longer LC Shocks. If they were a 70mm free height coil they'd be perfect.

Also, I spoke to Toytec about the Superflex rear coils. They have been discontinued due to low interest. Toytec recommended the OME861, but they are too tall for my liking.

I have also considered the Dobinsons 210v 182/217 ft/lbs, and reason you chose the 675v over the 210v?

CT135 03-10-2020 02:12 PM

I have some OME 861's in my garage (brand new) that I was planning on throwing on when my rear bumper and swing out finishes. After reading about the Dobinson C59-210V LC springs I think i'm going to ditch the OME and go with the DObinsons. Seems like they hold weight well and give a little lower of a lift compared to the OME 861's and ride a bit better.


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