Terrain Tamer parabolics installed (2 Viewers)

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I want a set of these springs for my FJ40. My inquiry a few months back revealed the stock was not yet available but since then, and the springs becoming available , I have used my 2024 Land Cruiser funds allotment for disk brakes, 3.70 differentials, Holley EFI, HyperSpark ignition, double seal output shaft, u-joints, interior updates and numerous $100.00 this $100 that and $100 something else ….etc etc .

I desperately need to add this based on everyone of the reviews I have read. My old cartilage doesn’t cushion my bones as well these days. I hate the sounds I make claiming in and out of any of my vehicles
 
I want a set of these springs for my FJ40. My inquiry a few months back revealed the stock was not yet available but since then, and the springs becoming available , I have used my 2024 Land Cruiser funds allotment for disk brakes, 3.70 differentials, Holley EFI, HyperSpark ignition, double seal output shaft, u-joints, interior updates and numerous $100.00 this $100 that and $100 something else ….etc etc .

I desperately need to add this based on everyone of the reviews I have read. My old cartilage doesn’t cushion my bones as well these days. I hate the sounds I make claiming in and out of any of my vehicles
Al:

Nice job coining a new acronym: LCFA (Land Cruiser Funds Allotment). Of course, this is not to be confused with the ULCFA (Unauthorized Land Cruiser Funds Allotment) which is often tapped into in the wee hours. ;)
 
Al:

Nice job coining a new acronym: LCFA (Land Cruiser Funds Allotment). Of course, this is not to be confused with the ULCFA (Unauthorized Land Cruiser Funds Allotment) which is often tapped into in the wee hours. ;)

No ring/common law = 100% LCFA

We dont need no stinkin ULCFA

:rofl:

There are pros/cons to everything in life
 
I wish these were available in 0-1" lift, but I realize I'm in the minority. Still, a very cool option!
I’ll join that minority, I don’t really want to lift my 40. Years back I could hop right in with a 4” lift but now I have a bit more trouble climbing up….and it really ain’t that tall. She’s stock height
 
Damn. Wish I didn’t just snag some dobinsons last year… Is a year long enough to tell the Mrs that I need new springs again? Those will be tough to procure under the ULCFA plan. The last set barely made the LCFA plan.

Georg, do you have a spring exchange program there at VH/CB?
 
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I’ll join that minority, I don’t really want to lift my 40. Years back I could hop right in with a 4” lift but now I have a bit more trouble climbing up….and it really ain’t that tall. She’s stock height

Cruiser Outfitters has a complete stock height 40 series replacement suspension with OEM and Japanese-made components. Give them a buzz.
 
Is there a specific type of shock that has to be used with these? I have some bilstein 5100's that are fairly new and would prefer to keep them. Just not sure if the design of these springs require a particular type of shock.
 
I know they do have a paired set of shocks but I would think your Bilsteins would be fine. Last I saw they were Koni
 
What you describe is how Toyota's leveling kit was used to resolve cruiser lean. It lowers the high side.
 
Is there a consensus on Terrain Tamer vs. OME Dakar for a ~2.5" lift? Which shocks (RS-9000XL -rs99116 and -rs99113 seem to match and have easy adjustability)?

Are the Terrain Tamer anti-inversion shackles the best match for them? Are they greasable? Or which shackle would the group recommend?

(I'm asking for a 3/1975 FJ40 with Sniper'd 2F, hardtop, 33x9.5 tires, winch used mostly around town with very occasional off-road.)
 
If I remember correctly, as I have been REALLY looking into these for my 5/75, Sniper’d 2F hardtop also used primarily around town with a touch more off road trail use…. The shackle pins I had seen with the complete set was greaseable ….as for a recommendation, I was looking at their complete kit
# SK015 and included everything needed…. I don’t think they are anti-inverson but….this was about 5 weeks ago . Today is 11/28/24 and maybe my information is outdated. I am hoping to place an order this week

EDITED: forgot to add Hyperspark’d
 
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Wonder if they ride better than a well done SOA. Anyone who owns them happen to ride in a SOA fj40 and could compare?
SOA is for 'trails.' A SOA-lift dwarfs 35-inch tires. At this point, ride-height is almost trivial, as the axle itself is lifted from just running bigger tires, providing much needed clearance for the rotated differential (double Cardan driveshafts). A set of oversized tires, run at beadlock-type pressures, is a very active part of the vehicle's suspension.

My buddy lost a knuckle, just seconds after doing 70 mph on a freeway off-ramp, on his SOA FJ40. I'm not sure if it was from the cut-and-turn, or something different. He unloaded the built SOA FJ40 rig for a mostly factory SOA '85 Toyota pickup with mild lift, and started building a Willy's CJ flat-fender.

If the parabolic-springs are able to articulate like a set of proper coils, I'd imagine that the biggest tire you can squeeze under a 2+-inch lifted 40 is about 31-inches. Without moving the steering box and drag-link, I was rubbing 33x12.5 with a similar (stiff) Rancho lift, also rubbing on the rear wheel well.

So, why are leaf springs (from a 'kit,' or from the factory) so stiff on a SUA? Axle wrap (no links), lack of sway bars controlling body-roll (40s and 45s), spring sag over time. These are good reasons to be a skeptic. Maybe, after half-a-century, someone finally made a proper lift for the leaf-spring Cruisers, but, it is going to need to be time-tested. Thirty-six posts into this thread, and no reports from the 'trail,' stay patient is what I'm thinking.
 
SOA is for 'trails.' A SOA-lift dwarfs 35-inch tires. At this point, ride-height is almost trivial, as the axle itself is lifted from just running bigger tires, providing much needed clearance for the rotated differential (double Cardan driveshafts). A set of oversized tires, run at beadlock-type pressures, is a very active part of the vehicle's suspension.

My buddy lost a knuckle, just seconds after doing 70 mph on a freeway off-ramp, on his SOA FJ40. I'm not sure if it was from the cut-and-turn, or something different. He unloaded the built SOA FJ40 rig for a mostly factory SOA '85 Toyota pickup with mild lift, and started building a Willy's CJ flat-fender.

If the parabolic-springs are able to articulate like a set of proper coils, I'd imagine that the biggest tire you can squeeze under a 2+-inch lifted 40 is about 31-inches. Without moving the steering box and drag-link, I was rubbing 33x12.5 with a similar (stiff) Rancho lift, also rubbing on the rear wheel well.

So, why are leaf springs (from a 'kit,' or from the factory) so stiff on a SUA? Axle wrap (no links), lack of sway bars controlling body-roll (40s and 45s), spring sag over time. These are good reasons to be a skeptic. Maybe, after half-a-century, someone finally made a proper lift for the leaf-spring Cruisers, but, it is going to need to be time-tested. Thirty-six posts into this thread, and no reports from the 'trail,' stay patient is what I'm thinking.
I believe the springs I currently have are 0" lift (but I could be wrong). 33x9.5's (Kenda) fit the front without rubbing. The rear rubbed over large bumps so I added a 1" extension to the bump stops. No rubbing since that extension but only on-road testing. The OME seller I spoke with assured me that 33's would not rub with their 2.5" lift. Guess I'll have to write TT and get a similar assurance if I go that route. With a 2.5" lift, I was expecting a minimum of 2.5" lift even at full compression, not just a 2.5" extension of travel. Anybody know if my definition is correct on this or I should adjust my expectation?
 
I believe the springs I currently have are 0" lift (but I could be wrong). 33x9.5's (Kenda) fit the front without rubbing. The rear rubbed over large bumps so I added a 1" extension to the bump stops. No rubbing since that extension but only on-road testing. The OME seller I spoke with assured me that 33's would not rub with their 2.5" lift. Guess I'll have to write TT and get a similar assurance if I go that route. With a 2.5" lift, I was expecting a minimum of 2.5" lift even at full compression, not just a 2.5" extension of travel. Anybody know if my definition is correct on this or I should adjust my expectation?
Due to the wider (8-inch) wheels, and 12.5-inch BFG Mud Terrains (circa 2001), the comparison isn't fair, on my part. Tire width and wheel width / offset changes the moment of axle compression forces. Also, bushings also play a role. Look at SOR heavy duty springs, the eyes are made so the pins have a bit more wiggle because the polyurethane is like double thickness above stock.
 
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I believe the springs I currently have are 0" lift (but I could be wrong). 33x9.5's (Kenda) fit the front without rubbing. The rear rubbed over large bumps so I added a 1" extension to the bump stops. No rubbing since that extension but only on-road testing. The OME seller I spoke with assured me that 33's would not rub with their 2.5" lift. Guess I'll have to write TT and get a similar assurance if I go that route. With a 2.5" lift, I was expecting a minimum of 2.5" lift even at full compression, not just a 2.5" extension of travel. Anybody know if my definition is correct on this or I should adjust my expectation?


O" or 2.5" lift spring is the same in full compression , the bump stop is what stop compression , it should not be the spring or the shocks
 
We just put the parabolics on our FJ40 through a thorough test on the trails in Redington Pass east of Tucson. First, the road up, which is potholed and washboarded and rutted, felt like an entirely different route. The parabolics simply took the sting out of it. Then, on Italian Trap trail, the springs again performed superbly, showing excellent compliance. I've never done anything that transformed the 40 like this single modification. The Koni Heavy Tracks performed equally well.
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