So I have a 1972 FJ-40, and I am putting in BJ-60 axles. In the front I am outboarding the springs to meet the perches that are already there with a shackle reversal setup. In the back I was going thinking about inboarding the BJ-60 springs that I am going to put in for increase the amount of flex I will get. Has anyone ever done this on a 40? What do you think it will ride like on the street? Only needs to get to the trail and back. Will the Pumpkin get in the way on the drivers side? Any thoughts would be appreciated.
Inboarding Rear Springs?
- Thread starter OH CANADA
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TJDIV
UP of MI.
[quote author=rusmannx link=board=12;threadid=15487;start=msg146896#msg146896 date=1083177688]
springs moved closer to the center will increase the axle's leverage on the spring, which may result in more flex, but i think you will loose stability.
wider = more stable
[/quote]
I agree (obviously) here. When I did the Dana swap in the FJ40 we moved the front springs out and the rear springs out. It rode better and was noticeably (definitely with the hard top on) more stable.
If you're talking about inboarding them, you could always just go elyptical! Wouldn't wanna drive it every day like that though.
You can't keep your stock springs with BJ axles? Don't know anything about them.
springs moved closer to the center will increase the axle's leverage on the spring, which may result in more flex, but i think you will loose stability.
wider = more stable
[/quote]
I agree (obviously) here. When I did the Dana swap in the FJ40 we moved the front springs out and the rear springs out. It rode better and was noticeably (definitely with the hard top on) more stable.
If you're talking about inboarding them, you could always just go elyptical! Wouldn't wanna drive it every day like that though.
You can't keep your stock springs with BJ axles? Don't know anything about them.
When I moved the rear axle back by 11" I inboraded the rear springs.
I did not notice much handling differences. And I did not see much by way of flex differences either. I only got a bit higher than Woody did on the BHCC 2003 ramp. so personaly unless you want to go to a lot of work for little improvement then I would not do it.
I did not notice much handling differences. And I did not see much by way of flex differences either. I only got a bit higher than Woody did on the BHCC 2003 ramp. so personaly unless you want to go to a lot of work for little improvement then I would not do it.
- Thread starter
- #5
I don't think that it will be alot of work. I will have the cruiser stripped down to the frame anyway so I figure it might be a good time to do it if I ever wanted to. I am just worried that it will be unstable and scary on the street. But once again, it will only be driven to and from the trail. With the added width of the 60 axles I think the flex will be huge.
Depends on how you do it. My rear axle was out of a Tacoma. So it was 60" wide. And that is like 3 or 4 inches wider than a 60 rear axle. So, take it for what it is worth. It will probably not be scary on the street. But it will not add that much benefit either..
If 'inboarding' doesn't make make a very noticable difference as Mace said, you'd be better to just mount new perches to the axle, swap in the longer 60 series springs with their larger bushings, and leave your springs in their stock (un-inboarded) postion (possibly removing the shortest leaf in the spring pack). Spend your time on other things that will make a bigger difference such as shock hoops/towers to use longer shocks.
good luck,
Steve
good luck,
Steve
[quote author=smcruisin link=board=12;threadid=15487;start=msg154245#msg154245 date=1084255898]
If 'inboarding' doesn't make make a very noticable difference as Mace said, you'd be better to just mount new perches to the axle, swap in the longer 60 series springs with their larger bushings, and leave your springs in their stock (un-inboarded) postion (possibly removing the shortest leaf in the spring pack). Spend your time on other things that will make a bigger difference such as shock hoops/towers to use longer shocks.
good luck,
Steve
[/quote]
Wouldn't he have to change his spring mounts to run 60 springs anyways?
If 'inboarding' doesn't make make a very noticable difference as Mace said, you'd be better to just mount new perches to the axle, swap in the longer 60 series springs with their larger bushings, and leave your springs in their stock (un-inboarded) postion (possibly removing the shortest leaf in the spring pack). Spend your time on other things that will make a bigger difference such as shock hoops/towers to use longer shocks.
good luck,
Steve
[/quote]
Wouldn't he have to change his spring mounts to run 60 springs anyways?
My rears are inboarded in dana 60 with 65wms. They were previously inboarded with cruiser axles. I disagree that it doesn't make it flex more. It helps me flex more than any other leafspring rig I've seen. Change to cherokee leafs .Only It's just hell on the bushings,
- Thread starter
- #10
I figure that the little bit of flex that will be lost in the front from outboarding will be made up in the rear through the inboarding.
