FJ45 rear springs in a FJ40

Radd Cruisers · 12-18-04, 01:56 AM

Heres a email I recieved today, any ideas????

tFrom: "Mark" <cruisermark@shaw.ca>
To: "Rob Lassman" <rclassman@shaw.ca>
Subject: I may have gone too far.
Date: December 17, 2004 10:14 PM

You once told me what was taken to be an 'ideal' wheelbase. Well, with the 45 springs, to short a brake line and the drive shaft not quite in (just by a couple c hairs), I have it all mocked up and have a 96" wheelbase (without the weight of the vehicle so it'll grow a bit), which is 7" longer than before. Rubbing on the bumper might be an issue. It is that far back. Front d/s in the rear. It looks like a lot. I mean really, a lot! What do you think? Could you run it by the guys on mud? I am scared. I might have to just bite the bullet and get a custom shaft. Go to 94 or 95". I gotta go to bed now, don't know about sleep though.....

Mark Joday, maybe you guys can help?

woody · 12-18-04, 06:51 AM

narrowin the rear bumper is common...IMO, easiest to push the front forward 3.5" and the back rearward by 3.5"...EASY reversal of stock packs for that.

I looked at a set of FJ45 rears, and decided it was WAY too much work to install

FLYINGLOW · 12-18-04, 01:29 PM

OK I finally signed up. I mostly want the wheelbase so I can put in a double tcase. I don't think its that much work. I had some bushings machined so I can use stock shackle pins in stock 45 bushings and fabricated some new rear hangers. I do need a longer brake line and might have to extend my air line for my locker. I'll post some pics when I get done. BTW great site, I've been using it for references for a while, just never been on the forum.

bad_religion_au · 12-19-04, 05:09 AM

fawk... i've looked at my 45 rears heaps, considering it, but they are LOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO NG

FLYINGLOW · 12-20-04, 09:12 AM

I just gotta trim some sheet metal and bleed the brakes and I'll be done. And yup, they are really loooooong. I hope the tires don't hit the bumper. I need to make new front hangers for the rear springs (mine are bent

), so I might move em forward a bit. I can't wait to go drive it, I'm outta here to finish up. I'll update in a couple hours.

FLYINGLOW · 12-20-04, 04:17 PM

45 springs are in. Rides nice on the road but haven't hit speed bumps yet, flexs not bad in the back yard. I don't have a ramp to guage anything though. The tires come up a little short of hitting the rear bumper. Time for a

I'm trying to figure out the picture posting.

Radd Cruisers · 12-21-04, 01:38 AM

Looks good from the pics you sent me, only thing slowing you down is those shorty shocks. I was thinking for a bunch more droop you might consider the same shocks Woody runs?

bad_religion_au · 12-21-04, 05:16 AM

leaf springs don't need shocks

how many springs did you take out of the 45 pack? i'd think at least the two shortest ones.

woody · 12-21-04, 07:24 AM

Bilstein 5125's would be my choice....14.5" stroke, hoop thru the bed to keep them fairly verticle and get good damping. Very pleased with mine...

figger out those damn pics.....might be some helpful hints in the Help section at the bottom of the forum too....

the shed guy · 12-21-04, 07:33 AM

I used 60 series springs in my 40 front and rear, and re drilled the diff centrebolt holes, moving rear diff back 5" aprox, and I swapped the shocks from one side of the xmember to the other.

We ended up with 98" wheelbase, and the 60 springs fitted the 81 on 40 series bushes and eyes, and we reversed the front shackles as well.

We just turned around the rear shackle mount on the chassis.

bad_religion_au · 12-21-04, 08:12 AM

i've been considering 60 series springs, but mine is the smaller size eye/ bush. yours was SOA wasn't it sheddie?

bit late for you to be posting here isn't it?

bad_religion_au · 12-21-04, 08:15 AM

oh, and how did you remove the studs holding the shackle mount?

Eskimo · 12-21-04, 08:30 AM

Quote:

Originally Posted by bad_religion_au

oh, and how did you remove the studs holding the shackle mount?

Mine came off with a grinder, hammer, and a pry bar...

If by "stud", you mean rivet..

FLYINGLOW · 12-21-04, 11:14 AM

I put some stainless bushings over the stock shackle pins and installed 45 bushings in the springs. I made the packs out of the top 3 leaves from the 45, and the next 4 down were stock 40 springs that had been rearched, leaving out the shortest one. The stock 40 springs have a nice taper on the ends. The shackle hangers stick out past the rear bumper by an 1" or so, which I made out of 2x3 1/4 wall tubing and drilled 1 1/4" holes for the DOM. As for shocks, I know flexing in my back yard isn't the real world, but I measured and they weren't hitting thier limits. They have 10" travel. And don't forget I am SUA. I did have to mount the ubolt plates with the stud sticking forward to run the shocks in front of the axle, which I don't like very much. The top end of the shocks are in the stock location. Figuring pics.

FLYINGLOW · 12-21-04, 11:47 AM

Quote:

Originally Posted by Eskimo

Mine came off with a grinder, hammer, and a pry bar...

If by "stud", you mean rivet..

They are a PITA. The top side is actually counter sunk and under a layer of steel. Lots of drilling and hammering and

FLYINGLOW · 12-21-04, 03:58 PM

I removed the image cause it was kind of repetative and I need to post an image elsewhere.

FLYINGLOW · 12-21-04, 04:25 PM

OK, finally got my way through it.

Radd Cruisers · 12-29-04, 05:27 PM

I watched Mark climb a couple rock beds with good ease, only think I noticed his rear was very compressed.

FLYINGLOW · 12-29-04, 07:02 PM

It seemed to run very good, but its only the second time out with the 36s. I am quite happy with the springs, way smoother ride. The flex seems better, I was able to make it through stuff without the locker on and surprised myself. I just need to move the shackle hangers back an inch. Once I loded up and flexed the springs, they sagged out a bit.

rockcod · 12-29-04, 07:57 PM

I used 60 springs also, WB is stretched to 103". Have not driven it yet, as I am still in the building stage.

FLYINGLOW · 12-29-04, 09:37 PM

Quote:

Originally Posted by rockcod

I used 60 springs also, WB is stretched to 103". Have not driven it yet, as I am still in the building stage.

Rockcod what did you use for the front spring hangers on the rear springs. It looks like they're tucked up. Pics? And just a little info I picked up from the spring shop, if you flip your springs around, you will get more axle wrap. Looks good!

rockcod · 12-29-04, 11:23 PM

The front mounts I made and put them outside the frame rails and I used Jonny Joints for the rear mounts. I flipped both sets of springs around and I am going to put in an anti-wrap bar. I will get some photos of the mounts for you.

rockcod · 12-31-04, 07:53 PM

I am running a T350 and dual mini t-cases (very long combo) to a mini truck axle, so I was forced to move everything back. I still have a hell of an angle at the rear pinion, had a new rear DS made with a cardan joint and aimed the pinion straight at the t-case.

Here are some photos of the mounts.

I still need to gussett the top of the front mount to prevent any flexing, I sleeved the frame rail and through bolted the spring pin.

FLYINGLOW · 01-01-05, 05:10 PM

Hey Rockcod how bout a pic of the front hangers from the rear? How did you compensate for the taper of the frame rails? Those hangers are nice, up out of the way and you can have some arc to the springs without too much lift. I'm glad to see I'm not the only one with gardening crap in my shop!

rockcod · 01-01-05, 09:05 PM

You would be amazed at what I have in my garage. Between the kids and the wife, I barely have enough room for the important stuff, like, the Cruiser, the dirt bikes, a mini chopper, tools, welder, tubing bender..........

This is the only pic I have of the rear springs.

FLYINGLOW · 01-01-05, 09:27 PM

Thanks. I was reffering to the front hangers though. What did you do about the taper of the rails?

bad_religion_au · 03-24-05, 12:00 AM

can someone post up pics of the rear shackle hanger of this setup?

FLYINGLOW · 03-25-05, 11:50 AM

Quote:

Originally Posted by bad_religion_au

can someone post up pics of the rear shackle hanger of this setup?

What are you talking about? 45 or 60 springs? Heres 45s.
This was my first try, after wheeling though I had to move it back an inch or 2 because the shackle angle was to much. I ended up gusseting it on the bumper. Let me know if you want an updated pic. I will have to take one.

12-18-04, 01:56 AM	#1
Radd Cruisers IH8MUD Lifer Join Date: Sep 2002 Location: Vancouver Island BC Canada Posts: 3,831	FJ45 rear springs in a FJ40 Heres a email I recieved today, any ideas???? tFrom: "Mark" <cruisermark@shaw.ca> To: "Rob Lassman" <rclassman@shaw.ca> Subject: I may have gone too far. Date: December 17, 2004 10:14 PM You once told me what was taken to be an 'ideal' wheelbase. Well, with the 45 springs, to short a brake line and the drive shaft not quite in (just by a couple c hairs), I have it all mocked up and have a 96" wheelbase (without the weight of the vehicle so it'll grow a bit), which is 7" longer than before. Rubbing on the bumper might be an issue. It is that far back. Front d/s in the rear. It looks like a lot. I mean really, a lot! What do you think? Could you run it by the guys on mud? I am scared. I might have to just bite the bullet and get a custom shaft. Go to 94 or 95". I gotta go to bed now, don't know about sleep though..... Mark Joday, maybe you guys can help? __________________ Come and visit us in Duncan, BC www.raddcruisers.ca --> 60 Series Cable Lockers available - 4.11s or 3.70s - handles and cables included --> 12HT & H55F combos available - complete & running --> in stock and ready to go.

12-18-04, 06:51 AM	#2
woody Admin Join Date: Jan 2002 Location: Appleton, WI TLCA# 1548 Posts: 7,687 Blog Entries: 2	narrowin the rear bumper is common...IMO, easiest to push the front forward 3.5" and the back rearward by 3.5"...EASY reversal of stock packs for that. I looked at a set of FJ45 rears, and decided it was WAY too much work to install __________________ Brian 'woody' Swearingen 1974 FJ40 'The Raisin' - Pitbull Rockers, 30-spline Longfields, SOA - 1/4 ellip 1996 FZJ80 'Gretchen' - MetalTech, ARB, OME, IPOR, 4x4Labs 2003 2500HD Duramax - Edge/Juice/Attitude, 285 Nitto Terra Grapplers, 4" exhaust Forum Questions? Click Here! 'America will never be destroyed from the outside. If we falter and lose our freedoms, it will be because we destroyed ourselves.' Abraham Lincoln

12-18-04, 01:29 PM	#3
FLYINGLOW IH8MUD Addict Join Date: Dec 2004 Location: Ladysmith TLCA# 9203 Posts: 744	OK I finally signed up. I mostly want the wheelbase so I can put in a double tcase. I don't think its that much work. I had some bushings machined so I can use stock shackle pins in stock 45 bushings and fabricated some new rear hangers. I do need a longer brake line and might have to extend my air line for my locker. I'll post some pics when I get done. BTW great site, I've been using it for references for a while, just never been on the forum. __________________ 77 FJ40 TBI 2F, ARB rear, rear 45 springs, 36" TSLs, Warn 8274...... Made in Japan, Built in Canada 97 4 Runner Ltd

12-19-04, 05:09 AM	#4
bad_religion_au Spit my last breath Join Date: Apr 2003 Posts: 2,021	fawk... i've looked at my 45 rears heaps, considering it, but they are LOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO NG __________________ What can you do when you wake up and realise you sacrificed everything you ever wanted in life for the sake of progress?

12-20-04, 09:12 AM	#5
FLYINGLOW IH8MUD Addict Join Date: Dec 2004 Location: Ladysmith TLCA# 9203 Posts: 744	I just gotta trim some sheet metal and bleed the brakes and I'll be done. And yup, they are really loooooong. I hope the tires don't hit the bumper. I need to make new front hangers for the rear springs (mine are bent ), so I might move em forward a bit. I can't wait to go drive it, I'm outta here to finish up. I'll update in a couple hours. __________________ 77 FJ40 TBI 2F, ARB rear, rear 45 springs, 36" TSLs, Warn 8274...... Made in Japan, Built in Canada 97 4 Runner Ltd

12-20-04, 04:17 PM	#6
FLYINGLOW IH8MUD Addict Join Date: Dec 2004 Location: Ladysmith TLCA# 9203 Posts: 744	45 springs are in. Rides nice on the road but haven't hit speed bumps yet, flexs not bad in the back yard. I don't have a ramp to guage anything though. The tires come up a little short of hitting the rear bumper. Time for a I'm trying to figure out the picture posting. __________________ 77 FJ40 TBI 2F, ARB rear, rear 45 springs, 36" TSLs, Warn 8274...... Made in Japan, Built in Canada 97 4 Runner Ltd

12-21-04, 01:38 AM	#7
Radd Cruisers IH8MUD Lifer Join Date: Sep 2002 Location: Vancouver Island BC Canada Posts: 3,831	Looks good from the pics you sent me, only thing slowing you down is those shorty shocks. I was thinking for a bunch more droop you might consider the same shocks Woody runs? __________________ Come and visit us in Duncan, BC www.raddcruisers.ca --> 60 Series Cable Lockers available - 4.11s or 3.70s - handles and cables included --> 12HT & H55F combos available - complete & running --> in stock and ready to go.

12-21-04, 05:16 AM	#8
bad_religion_au Spit my last breath Join Date: Apr 2003 Posts: 2,021	leaf springs don't need shocks how many springs did you take out of the 45 pack? i'd think at least the two shortest ones. __________________ What can you do when you wake up and realise you sacrificed everything you ever wanted in life for the sake of progress?

12-21-04, 07:24 AM	#9
woody Admin Join Date: Jan 2002 Location: Appleton, WI TLCA# 1548 Posts: 7,687 Blog Entries: 2	Bilstein 5125's would be my choice....14.5" stroke, hoop thru the bed to keep them fairly verticle and get good damping. Very pleased with mine... figger out those damn pics.....might be some helpful hints in the Help section at the bottom of the forum too.... __________________ Brian 'woody' Swearingen 1974 FJ40 'The Raisin' - Pitbull Rockers, 30-spline Longfields, SOA - 1/4 ellip 1996 FZJ80 'Gretchen' - MetalTech, ARB, OME, IPOR, 4x4Labs 2003 2500HD Duramax - Edge/Juice/Attitude, 285 Nitto Terra Grapplers, 4" exhaust Forum Questions? Click Here! 'America will never be destroyed from the outside. If we falter and lose our freedoms, it will be because we destroyed ourselves.' Abraham Lincoln

12-21-04, 07:33 AM	#10
the shed guy IH8MUD Addict Join Date: Sep 2003 Location: DOWN UNDER Posts: 624	I used 60 series springs in my 40 front and rear, and re drilled the diff centrebolt holes, moving rear diff back 5" aprox, and I swapped the shocks from one side of the xmember to the other. We ended up with 98" wheelbase, and the 60 springs fitted the 81 on 40 series bushes and eyes, and we reversed the front shackles as well. We just turned around the rear shackle mount on the chassis. Attached Images __________________ Darren M. "There's a gigantic grey area between good moral behaviour and outright felonious activities. I call that the Weasel Zone and it's where most of life happens." -Scott Adams 02 KZJ95TDI 285 MTRs ARB Secondairs Engel Shower GPS

12-21-04, 08:12 AM	#11
bad_religion_au Spit my last breath Join Date: Apr 2003 Posts: 2,021	i've been considering 60 series springs, but mine is the smaller size eye/ bush. yours was SOA wasn't it sheddie? bit late for you to be posting here isn't it? __________________ What can you do when you wake up and realise you sacrificed everything you ever wanted in life for the sake of progress?

12-21-04, 08:15 AM	#12
bad_religion_au Spit my last breath Join Date: Apr 2003 Posts: 2,021	oh, and how did you remove the studs holding the shackle mount? __________________ What can you do when you wake up and realise you sacrificed everything you ever wanted in life for the sake of progress?

12-21-04, 11:14 AM	#14
FLYINGLOW IH8MUD Addict Join Date: Dec 2004 Location: Ladysmith TLCA# 9203 Posts: 744	I put some stainless bushings over the stock shackle pins and installed 45 bushings in the springs. I made the packs out of the top 3 leaves from the 45, and the next 4 down were stock 40 springs that had been rearched, leaving out the shortest one. The stock 40 springs have a nice taper on the ends. The shackle hangers stick out past the rear bumper by an 1" or so, which I made out of 2x3 1/4 wall tubing and drilled 1 1/4" holes for the DOM. As for shocks, I know flexing in my back yard isn't the real world, but I measured and they weren't hitting thier limits. They have 10" travel. And don't forget I am SUA. I did have to mount the ubolt plates with the stud sticking forward to run the shocks in front of the axle, which I don't like very much. The top end of the shocks are in the stock location. Figuring pics. __________________ 77 FJ40 TBI 2F, ARB rear, rear 45 springs, 36" TSLs, Warn 8274...... Made in Japan, Built in Canada 97 4 Runner Ltd

12-21-04, 03:58 PM	#16
FLYINGLOW IH8MUD Addict Join Date: Dec 2004 Location: Ladysmith TLCA# 9203 Posts: 744	I removed the image cause it was kind of repetative and I need to post an image elsewhere. __________________ 77 FJ40 TBI 2F, ARB rear, rear 45 springs, 36" TSLs, Warn 8274...... Made in Japan, Built in Canada 97 4 Runner Ltd Last edited by FLYINGLOW; 12-27-04 at 07:51 PM.

12-21-04, 04:25 PM	#17
FLYINGLOW IH8MUD Addict Join Date: Dec 2004 Location: Ladysmith TLCA# 9203 Posts: 744	OK, finally got my way through it. __________________ 77 FJ40 TBI 2F, ARB rear, rear 45 springs, 36" TSLs, Warn 8274...... Made in Japan, Built in Canada 97 4 Runner Ltd

12-29-04, 05:27 PM	#18
Radd Cruisers IH8MUD Lifer Join Date: Sep 2002 Location: Vancouver Island BC Canada Posts: 3,831	I watched Mark climb a couple rock beds with good ease, only think I noticed his rear was very compressed. __________________ Come and visit us in Duncan, BC www.raddcruisers.ca --> 60 Series Cable Lockers available - 4.11s or 3.70s - handles and cables included --> 12HT & H55F combos available - complete & running --> in stock and ready to go.

12-29-04, 07:02 PM	#19
FLYINGLOW IH8MUD Addict Join Date: Dec 2004 Location: Ladysmith TLCA# 9203 Posts: 744	It seemed to run very good, but its only the second time out with the 36s. I am quite happy with the springs, way smoother ride. The flex seems better, I was able to make it through stuff without the locker on and surprised myself. I just need to move the shackle hangers back an inch. Once I loded up and flexed the springs, they sagged out a bit. __________________ 77 FJ40 TBI 2F, ARB rear, rear 45 springs, 36" TSLs, Warn 8274...... Made in Japan, Built in Canada 97 4 Runner Ltd

12-29-04, 07:57 PM	#20
rockcod IH8MUD Addict Join Date: Jul 2002 Location: Behind the Orange Curtain, CA TLCA# 3236 Posts: 693	I used 60 springs also, WB is stretched to 103". Have not driven it yet, as I am still in the building stage. __________________ Tony "Snotz" 63 FJ40 "Stubby" 67 FJ45LWB "Sully" 72 FJ40

12-29-04, 11:23 PM	#22
rockcod IH8MUD Addict Join Date: Jul 2002 Location: Behind the Orange Curtain, CA TLCA# 3236 Posts: 693	The front mounts I made and put them outside the frame rails and I used Jonny Joints for the rear mounts. I flipped both sets of springs around and I am going to put in an anti-wrap bar. I will get some photos of the mounts for you. __________________ Tony "Snotz" 63 FJ40 "Stubby" 67 FJ45LWB "Sully" 72 FJ40

12-31-04, 07:53 PM	#23
rockcod IH8MUD Addict Join Date: Jul 2002 Location: Behind the Orange Curtain, CA TLCA# 3236 Posts: 693	I am running a T350 and dual mini t-cases (very long combo) to a mini truck axle, so I was forced to move everything back. I still have a hell of an angle at the rear pinion, had a new rear DS made with a cardan joint and aimed the pinion straight at the t-case. Here are some photos of the mounts. I still need to gussett the top of the front mount to prevent any flexing, I sleeved the frame rail and through bolted the spring pin. __________________ Tony "Snotz" 63 FJ40 "Stubby" 67 FJ45LWB "Sully" 72 FJ40

01-01-05, 05:10 PM	#24
FLYINGLOW IH8MUD Addict Join Date: Dec 2004 Location: Ladysmith TLCA# 9203 Posts: 744	Hey Rockcod how bout a pic of the front hangers from the rear? How did you compensate for the taper of the frame rails? Those hangers are nice, up out of the way and you can have some arc to the springs without too much lift. I'm glad to see I'm not the only one with gardening crap in my shop! __________________ 77 FJ40 TBI 2F, ARB rear, rear 45 springs, 36" TSLs, Warn 8274...... Made in Japan, Built in Canada 97 4 Runner Ltd

01-01-05, 09:05 PM	#25
rockcod IH8MUD Addict Join Date: Jul 2002 Location: Behind the Orange Curtain, CA TLCA# 3236 Posts: 693	You would be amazed at what I have in my garage. Between the kids and the wife, I barely have enough room for the important stuff, like, the Cruiser, the dirt bikes, a mini chopper, tools, welder, tubing bender.......... This is the only pic I have of the rear springs. __________________ Tony "Snotz" 63 FJ40 "Stubby" 67 FJ45LWB "Sully" 72 FJ40

01-01-05, 09:27 PM	#26
FLYINGLOW IH8MUD Addict Join Date: Dec 2004 Location: Ladysmith TLCA# 9203 Posts: 744	Thanks. I was reffering to the front hangers though. What did you do about the taper of the rails? __________________ 77 FJ40 TBI 2F, ARB rear, rear 45 springs, 36" TSLs, Warn 8274...... Made in Japan, Built in Canada 97 4 Runner Ltd

03-24-05, 12:00 AM	#27
bad_religion_au Spit my last breath Join Date: Apr 2003 Posts: 2,021	can someone post up pics of the rear shackle hanger of this setup? __________________ What can you do when you wake up and realise you sacrificed everything you ever wanted in life for the sake of progress?

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