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how is the suspension working?
Builds 1998 FZJ70 Build (7 Viewers)
- Thread starter wngrog
- Start date
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- Thread starter
- #22
I made a call to Roark to see if there was a lighter version of these springs like the FJ40s I installed that had just the two leafs and no overload.
Nada.
Turns out these are the same part number as a FJ60 rear according to him.
(Edit: that pic was taken wide angle and it exaggerated the rear height on the one on the right)
Here is is compared to my 70 which is almost an apples to apples but not quite.
My 70 has Dobinsons IMS and the lightest rear pack they make for a 70. It also has a set of Dobinsons drawers with full tool load out. Probably 400# back there. Add the front and rear ARB bumpers and winch. I'd say 1000-1200 pounds heavier. In fact, I added MAF 4.8" shackles to the rear of mine after the leafs
Broke in to give it a 1" higher ass than front.
- Thread starter
- #23
So going with the above comparitors I'll give the edge to the empty 70 with Parabolics.
It's not night and day better like I found with the 40 and the 45 that I did but it's better. If I compared two empty unmodified trucks (subtracting the 1000-1200 pounds from mine) the parabolic would be a clear winner.
It's not night and day better like I found with the 40 and the 45 that I did but it's better. If I compared two empty unmodified trucks (subtracting the 1000-1200 pounds from mine) the parabolic would be a clear winner.
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- Thread starter
- #24
Aight, I put my thinking cap on and came up with the obvious fix for the ass high aspect.
These springs come with 2 spacers that are only there to fill the gap for a standard Ubolt setup to work. Without them most units would possibly bottom out and not get fully tight.
This is a real issue with Dobinsons springs because most ubolts are made for thick OEM packs.
So....simply move the spacers from the bottom of the pack to the top.
Instant 1" lower.
Tagging @orangefj45 for a tech tip
These springs come with 2 spacers that are only there to fill the gap for a standard Ubolt setup to work. Without them most units would possibly bottom out and not get fully tight.
This is a real issue with Dobinsons springs because most ubolts are made for thick OEM packs.
So....simply move the spacers from the bottom of the pack to the top.
Instant 1" lower.
Tagging @orangefj45 for a tech tip
I was going to say, I wouldn't be surprised if there is some engineering reason for the location of those spacers and you'll need to move them back.
It's like you have a piece of wood in there now for some hill-billy lift action.
- Thread starter
- #26
I was going to say, I wouldn't be surprised if there is some engineering reason for the location of those spacers and you'll need to move them back.
It's like you have a piece of wood in there now for some hill-billy lift action.
I'm gonna say some Mud engineer might chime in and say I'm crazy but I don't see any issue.
Think the lean pads I've been putting in these things for years. They go on top.
I know why they are there. They could be completely removed if you wanted to do that.
Our FZJ70 is very quiet even with the windows open and MT tires under her. The driving environment is more like a street sedan rather than a Cruiser.
Due to this, I look forward to an opportunity to road test your gem and experience true quiet from your attention to detail.
Hello,
For what it is worth, gasoline/petrol 70 Series are quieter than you think. Their engines rattle less than diesel engines.
This is a surprise for anyone used to the diesel engines 70 Series have.
They do use more fuel but, in engines such as the 1FZ or 1GR, reasonable mileage is a matter of keeping the rpm in the right range. This may require some control of one's right foot.
Juan
Its not often you see people put lowering blocks into a landcruiser 
how did tie the spring centrebolt up into the locating hole in the axle perch to stop the axle moving or sliding around
how did tie the spring centrebolt up into the locating hole in the axle perch to stop the axle moving or sliding around
- Thread starter
- #30
Its not often you see people put lowering blocks into a landcruiser
The center bolt is in the same place. The blocks just swapped ends from the bottom to the top.
