**Rear Coil Spring Discussion - The Perfect 3rd Gen Rear Spring**

[Endlessblockades]

No no, it's like that way across all of WA - truly a sight to behold :laugh:
Just the chances of seeing on stock is very slim - sometimes it hard to find one on OEM susp./ride height! And given my running boards sold for $250 it seems like OEM stuff is few-and-far in between

I'd love to find someone who wanted my stock running boards and most of the mounting hardware for $50! Can't give the things away down here and the cladding is everywhere. When I see one without it, my internal dialog says 'cleeeeean'.

 

[FunBobby]

ALSO how many replies or input do i need to do before i cant post a thread? i have a crazy noise in a video i wanna post to get help with on my 98

new account here

Just go to people's build threads and tell them you like their rig, you'll be up to 10 in no time.

 

[ItsEvan23]

cool man, i like your rig!

 

[diy_overlanders]

Very interesting thread here with lots of great info. I slowly building out the '97 family camping rig and (after reading this thread like 3 times) have kind of narrowed down options to the Dobinsons 201V or OME 861's.... but then I got curious and stumbled across the Bilstein 36-281831 kit for a 4th Gen.

Now a little background on my rig is it's already lifted with 6112's w/ 650lbs springs up front and 5100's (the extended travel ones from Wheeler's sku# BIL-4R5100-X2) bagged 890s in the rear. Which when loaded for a simple camping/offroad trip it worked great. Fast forward 6 months and I clearly underestimated my weight requirements once the family got hooked on offroad trips. Since the lift we started building drawer systems, got a full rack, RTT, etc, etc... total static weight on it now is ~450lbs (tools, drawer system, kitchen, rack, RTT, etc.), loaded for a 4 day trip and we're up around 700lbs.

After reading this thread the first 2 times to wrap my head around all the info that people like [MENTION=239416]Wrecked - Rebuilt[/MENTION] and [MENTION=28464]eimkeith[/MENTION] have shared, I went to see if there were any other offerings out there. Thats where I stumbled across the Bilstein 36-281831 kit, its a 4th gen 2.2" lift rear coil that supports 400lbs of extra weight (constant).

So given that the 3rd gen's stock curb weight is about 3900lbs and a 4th gen's is about 4300lbs, is it wrong to assume that if they did fit in the 3rd gen coil perch you'd be up around 700lbs load capacity?

They look like linear load rated springs, but has anyone has ran these on a 3rd Gen?

Anyway, just thought I'd throw them out there as another possible option for those of us that a really loading up the 3rd gen with some heavy accessories/gear.

 

[CT135]

Here's what the 210v's look like with no weight. Got some rake but will be adding quite a bit of weight in the future so I figured i'd just get them now so I don't have to change them out later.

How do they ride?? I’m putting my 210V on next week when I build the swing out/ removable jerry can holder for my 4x bumper.

 

[Dieselchessy]

Very interesting thread here with lots of great info. I slowly building out the '97 family camping rig and (after reading this thread like 3 times) have kind of narrowed down options to the Dobinsons 201V or OME 861's.... but then I got curious and stumbled across the Bilstein 36-281831 kit for a 4th Gen.

Now a little background on my rig is it's already lifted with 6112's w/ 650lbs springs up front and 5100's (the extended travel ones from Wheeler's sku# BIL-4R5100-X2) bagged 890s in the rear. Which when loaded for a simple camping/offroad trip it worked great. Fast forward 6 months and I clearly underestimated my weight requirements once the family got hooked on offroad trips. Since the lift we started building drawer systems, got a full rack, RTT, etc, etc... total static weight on it now is ~450lbs (tools, drawer system, kitchen, rack, RTT, etc.), loaded for a 4 day trip and we're up around 700lbs.

After reading this thread the first 2 times to wrap my head around all the info that people like [MENTION=239416]Wrecked - Rebuilt[/MENTION] and [MENTION=28464]eimkeith[/MENTION] have shared, I went to see if there were any other offerings out there. Thats where I stumbled across the Bilstein 36-281831 kit, its a 4th gen 2.2" lift rear coil that supports 400lbs of extra weight (constant).

So given that the 3rd gen's stock curb weight is about 3900lbs and a 4th gen's is about 4300lbs, is it wrong to assume that if they did fit in the 3rd gen coil perch you'd be up around 700lbs load capacity?

They look like linear load rated springs, but has anyone has ran these on a 3rd Gen?

Anyway, just thought I'd throw them out there as another possible option for those of us that a really loading up the 3rd gen with some heavy accessories/gear.

In my brain curb weight has little bearing on rear axle load. And pretty sure 4th gen coils are larger diameter and maybe shorter, so would introduce more issues.

But it might be worth a try.

 

[diy_overlanders]

In my brain curb weight has little bearing on rear axle load. And pretty sure 4th gen coils are larger diameter and maybe shorter, so would introduce more issues.

But it might be worth a try.

True about the curb weight, but total load gets distributed (albeit unevenly) to the front as well. So in theory one wouldn't need as stiff a spring in the front if can accommodate lets say 30% of the total load, but by beefing up where 70% of the load resides could be a solution.

Not sure about the 4th gen coils overall fitment into a 3rd gen, but like you said it could be worth a try. Just seeing if someone has experience in using 4th gen coils in a 3rd gen.

 

[Bad Luck]

Very interesting thread here with lots of great info. I slowly building out the '97 family camping rig and (after reading this thread like 3 times) have kind of narrowed down options to the Dobinsons 201V or OME 861's.... but then I got curious and stumbled across the Bilstein 36-281831 kit for a 4th Gen.

Now a little background on my rig is it's already lifted with 6112's w/ 650lbs springs up front and 5100's (the extended travel ones from Wheeler's sku# BIL-4R5100-X2) bagged 890s in the rear. Which when loaded for a simple camping/offroad trip it worked great. Fast forward 6 months and I clearly underestimated my weight requirements once the family got hooked on offroad trips. Since the lift we started building drawer systems, got a full rack, RTT, etc, etc... total static weight on it now is ~450lbs (tools, drawer system, kitchen, rack, RTT, etc.), loaded for a 4 day trip and we're up around 700lbs.

After reading this thread the first 2 times to wrap my head around all the info that people like [MENTION=239416]Wrecked - Rebuilt[/MENTION] and [MENTION=28464]eimkeith[/MENTION] have shared, I went to see if there were any other offerings out there. Thats where I stumbled across the Bilstein 36-281831 kit, its a 4th gen 2.2" lift rear coil that supports 400lbs of extra weight (constant).

So given that the 3rd gen's stock curb weight is about 3900lbs and a 4th gen's is about 4300lbs, is it wrong to assume that if they did fit in the 3rd gen coil perch you'd be up around 700lbs load capacity?

They look like linear load rated springs, but has anyone has ran these on a 3rd Gen?

Anyway, just thought I'd throw them out there as another possible option for those of us that a really loading up the 3rd gen with some heavy accessories/gear.

From earlier in this thread. Post #58:

Let me know what you think of the 210v. I just installed the 675v on my 96'. I measured the coil free height at 18.75in or 476mm. I netted about 4in of lift with a plate bumper. They ride really well and overall i'm impressed with the ride quality and flex.

However, I may end up ditching the 675v for the 210v. The major downside to running a FJ/4th/5th gen coil is that they have a notably larger diameter. I knew this going into this project, and knew I might run into an issue. But for $133 it was worth the gamble.

For me, the issue is that the coil is so wide that it is actually hitting my frame rail on the passenger side. The contact is in the less active section of the coil so it doesn't pop or make any noises, but it does rub. I'm not sure how comfortable I would be in the long run with that kind of contact.

Post #65

So the Dobinsons 675v are for the FJ, 4th and 5th 4runners. They are a 3in, stock weight, high-flex coil. I am currently running them with a 120lb steel plate bumper and they netted me 4in of lift. With this in mind I'd think a 1in lift coil from a 5th gen would only net you a 2-2.5in lift. The other issue is that if you are running extended shocks a 1in lift coil might not have enough free height to stay in the truck at full flex.

I had this issue with the Dobinsons 137v (2in variable rate coil). Even with 10mm trim packers the coils would be loose to the point of falling out (with stock LC shocks).

Also, while FJ, 4th and 5th gen coils technically 'work' I wouldn't recommend them to anyone. I bought my as a fun experiment but I will not be keeping them in the long run. The FJ/4th/5th gen coils are a larger diameter so you have to get creative to center them on your oem coil perches...I'm also having an issue where the coil is too wide, to the point that it hits the frame of the truck.

Post #66

I've been meaning to log-in here and post this same thing about the 675v. I couldn't get them to seat into the coil buckets on top, they just kinda wedged between the frame rail and the edge of the bucket due to the larger spring diameter. I could fit my finger between the top of the coil and the coil bucket. I tried with the stock cone bumps, still no dice.

I didn't want to run them if they weren't seated fully, so I put the 861s back on for now. I can post photos if people want, it was kind of hard to get a photo that showed it well though. But I'd agree that they aren't the right solution unfortunately.

 

[lgc285]

99's + dobinson 2 in

Does any one have any additional insight, pictures or thoughts on the 99 talls in front with Dobinsons 2 inch rear coil? c59-131 or c59-137v.

Ive got 99s for the front with 5100's ready to go and considering the dobinsons for the rear. Curious how these compare to the common 906 set up. Different spring rates between the two coils for heavy and standard load but I Feel like these coils could be a good match for the 99's? Anyone prefer these over the ome coils? Thanks for any thoughts!

 

[Devbot]

Regarding the discussion initially, I asked ARB what coils they had were progressive rate and this was their response. Thought it seemed funky; that this was the first time I was hearing they offered multiple kinds. (other half of the email was a separate question)

 

[t.kill]

I just ordered some 210v's. I have the 4runner 5100's in the rear and i'm thinking that i'm going to have to get longer shocks. Is that true? If so what are you guys running?

 

[gbb]

Does any one have any additional insight, pictures or thoughts on the 99 talls in front with Dobinsons 2 inch rear coil? c59-131 or c59-137v.

Ive got 99s for the front with 5100's ready to go and considering the dobinsons for the rear. Curious how these compare to the common 906 set up. Different spring rates between the two coils for heavy and standard load but I Feel like these coils could be a good match for the 99's? Anyone prefer these over the ome coils? Thanks for any thoughts!

I paired the c59-137v coils with the 3rd gen specific Bilstein 5100s in the rear and Bilstein 6112s upfront set to the 6/4 setting. The c59-137v coils aren't side specific.

Here are my hub to fender measurements:

- FL: 21.5"
- FR: 21.5"
- RL: 22.5"
- RR: 22.25"

 

[Dolson]

ever seen a rear like this?

just bought this 2000 and im not familiar with this rear end, anyone seen this before? springs are from a older f250 i believe. truck is sitting around 6-7 inch lift with no spacers. rear end vibrates after 40mph. please help lol

 

[MattJakobs]

just bought this 2000 and im not familiar with this rear end, anyone seen this before? springs are from a older f250 i believe. truck is sitting around 6-7 inch lift with no spacers. rear end vibrates after 40mph. please help lol

Yikes, okay...

This is definitely a one off job, not something you'd buy off the shelf. Looks like they made custom top and bottom shock mounts. Guessing those shocks aren't from a 3rd gen 4Runner either.

Does the 6-7" lift include a body lift? If not, something with running this much suspension lift is most likely the root of your problem.
How many miles are on the 4Runner? Know if the U-Joints have ever been replaced? Stock driveshaft?

Edit: After looking at the angle on that panhard bar, I'm guessing it's all suspension lift?

 

[shadow247]

just bought this 2000 and im not familiar with this rear end, anyone seen this before? springs are from a older f250 i believe. truck is sitting around 6-7 inch lift with no spacers. rear end vibrates after 40mph. please help lol

You are looking a custom-hack job. Nothing there is correct. The springs are WAAAy too thick to actually be from a Toyota, the panhard bar is at a 45 degree angle, and the shocks mount to the front in the stock configuration. You are going to have to find a custom 4x4 shop to get this sorted. Good luck bro. I imagine those cheap ass, super wide tires are contributing to your vibration.

What's the front end look like?

 

[MattJakobs]

You are looking a custom-hack job. Nothing there is correct. The springs are WAAAy too thick to actually be from a Toyota, the panhard bar is at a 45 degree angle, and the shocks mount to the front in the stock configuration. You are going to have to find a custom 4x4 shop to get this sorted. Good luck bro. I imagine those cheap ass, super wide tires are contributing to your vibration.

What's the front end look like?

Way to add insult to injury.

Who knows if this is a hack job. Can you see the quality of the welds or anything else?

He stated the coils are from a Ford and not a Toyota. Nice job reading there.

Those tires are Toyo Open Country M/Ts, not a cheap ass tire. Nice job on the assumption.

 

[Dolson]

Yikes, okay...

This is definitely a one off job, not something you'd buy off the shelf. Looks like they made custom top and bottom shock mounts. Guessing those shocks aren't from a 3rd gen 4Runner either.

Does the 6-7" lift include a body lift? If not, something with running this much suspension lift is most likely the root of your problem.
How many miles are on the 4Runner? Know if the U-Joints have ever been replaced? Stock driveshaft?

Edit: After looking at the angle on that panhard bar, I'm guessing it's all suspension lift?

Yeah its all suspension, its got 160k miles and u joints have been done but not the driveshaft

 

[Dolson]

You are looking a custom-hack job. Nothing there is correct. The springs are WAAAy too thick to actually be from a Toyota, the panhard bar is at a 45 degree angle, and the shocks mount to the front in the stock configuration. You are going to have to find a custom 4x4 shop to get this sorted. Good luck bro. I imagine those cheap ass, super wide tires are contributing to your vibration.

What's the front end look like?

Lol yeah if only it was the tires, it only vibrates in the rear so im assuming it has something to do with the way this “custom” job. Front end is a 6” fabtech w dirt logic 2.0 coilovers and camburg ucas

 

[Dieselchessy]

Generally speaking, when folks do that much lift they rotate the axle to point the pinion at the tranny and then run a double cardan or something to reduce driveline U-joint angle.

Also might be that your driveline U-joints aren’t clocked properly.

I don’t get the lower drag bar they put on for the lower shock mounts. Looks like a pavement pounder lift.

The bump stops look original....

I love the brake line mount relocation.

 

[Dolson]

Generally speaking, when folks do that much lift they rotate the axle to point the pinion at the tranny and then run a double cardan or something to reduce driveline U-joint angle.

Also might be that your driveline U-joints aren’t clocked properly.

I don’t get the lower drag bar they put on for the lower shock mounts. Looks like a pavement pounder lift.

The bump stops look original....

I love the brake line mount relocation.

yeah honestly this whole rear end is just a head scratcher. lol