4bt fj cruiser

[slytowncrawler2]

 

[fordcontraption01]

other than pulling the shaft ive been told the pinion nut size is different from the 50 to 60

 

[slytowncrawler2]

Yep..... One is 1"1/8. And the other is 1"15/16.
Other than that if u take a guys word for it u end up with a 50.

 

[LaMedic]

Sweet looking 40!

 

[birfme]

Now who would cut up a perfectly good fj40

 

[Krobbie]

How long are your links in the rear?

 

[slytowncrawler2]

I can let you know shortly I'm headed down there to work on it today.... Can't remember of the top of my head

 

[slytowncrawler2]

Lowers are 36.5"

Uppers 24.5"
Separation at frame7.5"
At axle 15"

 

[mikepotts]

lookin good bud.

 

[Krobbie]

Lowers are 36.5"

Uppers 24.5"
Separation at frame7.5"
At axle 15"

With this difference in separation between both do you have much anti squat? And does the pinion kick up?

 

[slytowncrawler2]

The rear actually cycles real well... The pinion stays pretty steady throughout the suspensions range of motion...
I was expecting the rear to "walk" towards the front real bad under extreme droop but it's actually pretty good I can get u some pics if you'd like.
While I was setting this up I called a friend with a tj that used this kit. And even without knowing what his lengths were I ended up being very close to his setup.
His tj drives very very good with 43s so...... We will see

 

[slytowncrawler2]

Thanks mike! What plans do you have for your yj??

 

[mikepotts]

Thanks mike! What plans do you have for your yj??

the SYE showed up today from clayne (here), ive got some 4.5 leafs going spring over, ive got 79 ford 3/4 t axles... tires and wheels undetermined, im gonna see what i can get a deal on when everything else is ready. the rear 60 is took apart right now getting cleaned discs and diff. welded front will have a spartan. gonna keep the 2.5 until its clearly underpowered.

 

[slytowncrawler2]

I have never run a ball joint style 60... I'm learning the cast center welds a lot shittier than most cast I have welded to. So I took some advise and bolted and welded to the center section ......

A friend has run a similar setup and could not get welds to stick ..... If this comes off it was ment to be.

 

[slytowncrawler2]

The bolts are obviously too long Ryan is gone replace them tomar.
And before I done all that I made sure to weld tubes to the diff. Our friend also had trouble with twisting the tubes in the dif.

 

[Rockwells607]

I don't know what it is about the cast on them housings, some lay a bead of weld great and others crack and break off right away....gotta be the casting carbon in them or something

 

[clayne]

the SYE showed up today from clayne (here), ive got some 4.5 leafs going spring over, ive got 79 ford 3/4 t axles... tires and wheels undetermined, im gonna see what i can get a deal on when everything else is ready. the rear 60 is took apart right now getting cleaned discs and diff. welded front will have a spartan. gonna keep the 2.5 until its clearly underpowered.

Thanks Mike, Hope it works well for you.

 

[slytowncrawler2]

I'm learning little by little how to make a tube bender do what I want. I'm almost obsessed with learning th art of bending tube. I still have a long way to go but I'm gettin there . The belly pan is one area where I learned a lot ......

Nut welded in the end of a tube. Bolts go through lower link mounts then thread into belly pan

 

[slytowncrawler2]

Got the belly pan fitted nicely then it was time to skin it.

In this pic you can see us building a template for the removable skid that goes under the drive shaft.
Ought to make trail repairs easier

.25" plate. It's not that heavy I can lay under it and lift it into place while a friend installs bolts

 

[jordan7118]

Awesome! Dig the old 40-series Cruisers