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11-01-09, 07:21 PM
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#1 (permalink)
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Dog is my co-pilot.
Join Date: Feb 2005
Location: Seattle, USA
Posts: 2,716
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Home Brewed U-bolt Flip.
Hi All:
Been working on a home-brewed u-bolt flip for my SUA FJ40.
Here is a pic of a "mock-up" done on a spare rear axle tube. I'm using those GM P/U u-bolt plates.
The only reasons I can think of to have a bottom plate under the leaf spring is to protect the spring center bolt and to align the u-bolts under the spring.
Any opinions or comments?
Thanks!
Alan
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www.seattlecruiserheads.com
"Cruiserdrew" wrote:
" The very worst thing you can to to a cruiser is half thought out mods that are underfunded and never quite get finished. Then you end up with hacked junk that doesn't work, and some future owner will curse you and all of your children."
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11-01-09, 07:27 PM
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#2 (permalink)
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Forum Lifer
Join Date: Mar 2003
Location: Sacramento, CA
Posts: 8,806
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I think that bottom plate is important and keeps the spring pin aligned, and keeps the u-bolt s from spreading. Also recesses the u-bolts What is your top plate? Looks like a Chevy piece.
__________________
Andrew
1971 FJ-40 Rubicon tested, 2F powered, SM420, some mods
1976 FJ40 Rusting slowly in the back yard
1984 FJ-60 H41, Toybox, 4.11, SOA, twin sticks and more
1989 FJ-62 125k-Stock, daily driver
1997 FZJ-80 Driveway queen, with door dent
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11-01-09, 07:59 PM
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#3 (permalink)
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Forum Regular
Join Date: Aug 2009
Location: The Exact Geographical center of California
Posts: 197
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X2 on what is that top piece. Do you have have year and model we can all go out and find? Also would agree w/ the thought on the bottom plate (or lack thereof...) Seems like the lower plate would be e z to fab. I like it. Good work!
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11-01-09, 08:19 PM
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#4 (permalink)
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Local Diesel Fanatic
Join Date: Oct 2006
Location: Ft. Worthless, TEXAS!
Posts: 3,143
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Quote:
Originally Posted by Cruiserdrew
I think that bottom plate is important and keeps the spring pin aligned, and keeps the u-bolt s from spreading. Also recesses the u-bolts What is your top plate? Looks like a Chevy piece.
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he could easily take a peice of steel and cut 2 slots for the u bolts to keep them from spreading tho i dont think that would be much of a problem.
If you flipped the center pin to where it was into the little bottom mount seems like that would hold it in place just fine.
looks good. i dont really see any issues as long as you can hold the axle from shifting on the springs.
__________________
[O] =TOYOTA=[O] = Mo Betta!
**84 FJ60 "Fiona", OME springs, anti inversion lift shackles, 33's, Front aussie, Rear Detroit, 4.56's, and exhaust..... For Now.... ROTW, 2F-E Swap**
**82 BJ42 SR and some 33x10.50-15's**
91 Honda Civic Hatch "Fry" with a JDM B20B CR-V Engine, with some bolt ons... Oh and it might have some nitrous there somewhere as well... 
01 Dodge 2500 "Clifford" 5spd 4 door 4x4 Cummins Turbo Diesel with 4" turbo back exhaust, Quadzilla Adrenaline w/ Pulse, 90hp sticks, Valair Ceramic Clutch, Raptor 150 lift pump, and some 285/75/16 Treadwright MTG's Dyno'd 409.1HP/742.6FT-LBS on 4-11-09 Still NOT Enough POWER!!!
 Need A Cruiser Mechanic? Zismine4life@yahoo.com <----(Me/Trent)
I of course guarantee all of my work to be a professional installation / service.
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11-01-09, 08:37 PM
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#5 (permalink)
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Dog is my co-pilot.
Join Date: Feb 2005
Location: Seattle, USA
Posts: 2,716
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Hi All:
Look in this thread for the part numbers of the upper u-bolt plates (I'm using junkyard versions.)
http://forum.ih8mud.com/40-55-series...-build-up.html
Regards,
Alan
Quote:
Originally Posted by LAMBCRUSHER
X2 on what is that top piece. Do you have have year and model we can all go out and find? Also would agree w/ the thought on the bottom plate (or lack thereof...) Seems like the lower plate would be e z to fab. I like it. Good work!
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__________________
www.seattlecruiserheads.com
"Cruiserdrew" wrote:
" The very worst thing you can to to a cruiser is half thought out mods that are underfunded and never quite get finished. Then you end up with hacked junk that doesn't work, and some future owner will curse you and all of your children."
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11-01-09, 09:03 PM
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#6 (permalink)
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250+ Club
Join Date: May 2006
Location: Olympia, Washington
Posts: 387
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Nice! I think you'll be ok without the bottom plate...but I have a suspicion that it will help with centering the leaf spring when you hit something hard. Also, a bottom plate may act as a "ramp" on rocks etc so they slide right down the spring instead of possibly stopping at the u-bolt.
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11-01-09, 09:15 PM
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#7 (permalink)
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Forum Regular
Join Date: Apr 2007
Location: Under the hood
Posts: 242
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Here's what I did with mine, the top bracket is from a toyota pickup, I built the bottom plate from spare steel. I ended up ditching this design when I had to put in 12* shims and I couldn't find u-bolts long enough. I'll go back to it when I find the u-bolts I need.
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Seth_O
"She may not look like much, but she's got it where it counts."
Quote:
Originally Posted by Vicm
A 40 is like a wife , everything else is just a GF.
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'69 FJ40 "Lucy": '77 2F; SM465 + NP203 + 3spd t-case; SR + OME 2.5"; 4WDB; PS; 100" WB; bucket seats; on-board air; still needs body work :(
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11-02-09, 01:14 PM
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#8 (permalink)
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250+ Club
Join Date: Apr 2005
Location: Afton VA
Posts: 506
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Quote:
Originally Posted by Cruiserdrew
I think that bottom plate is important and keeps the spring pin aligned, and keeps the u-bolt s from spreading. Also recesses the u-bolts
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I have the same set-up. I have been running them for a couple of years now w/no issues.
X2 on the bottom plate will keep your center pin from getting buggered up and will keep the U-bolts in place as they get dragged over rocks n stuff.
Keep in mind this MOD may be better suited for aftermarket springs since they are usually not as wide as stock 40 springs.
Looks great!.. keep up the good work 
__________________
78 fj40, 4" lift, Scout PS, ARBs, SM465/3spd TC
91 FJ80-stock for now-future expedition truck
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11-02-09, 02:40 PM
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#9 (permalink)
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The Anti-Leafer
Join Date: Nov 2002
Location: Dallas, Georgia
Posts: 2,267
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Wow! Welcome to 1997  Yeah you will need the bottom plate as your u-bolts will spread out & your center pin will egg the leafs.
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11-02-09, 02:54 PM
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#10 (permalink)
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Geezer
Join Date: Jan 2003
Location: Western WA
Posts: 1,093
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Hey Alan,
You can buy a couple chunks of steel and build your own bottom plates.
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