I picked up a fj80 front end minus third yesterday and am thinking on a fj60 housing i have or a d60 housing i have to use as a center. any thoughts would be helpful
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I believe the inner axle spline that slide into the birfields are 24 spline. You can put 80 inners into the 55 3Rd, but not the 55 inners into the 80 birfs. You will need custom length 24 spline inners. The knuckle balls can be put on the 55 housing, you will have to machine down the ball sleeve a little. If you got a fj60 front housing, you could install 4plus products axle sleeves into each end and you would have the width of a front 80 axle. You would have to get custom inners for each side. Trail gear could make those for you.I'm gonna dredge this up as it's the only thread I've found that comes close to what my questions are.
Can I throw an 80 birf on a 55 inner?
Is the axle tube the same diameter?
Can I cut the 55 knuckles off and replace them with the 80 series units
Ball, knuckle, birf locking hubs etc?
I have a 77 pig. I also have a 94 80 series that I intend on parting out/using for upgrades for the 55. It has a cracked housing but the knuckles, hubs and brakes are in perfect condition.
As poser has stated the 80 axle isn't much of an upgrade in terms of strength however the front and rear brakes are a significant improvement and I'd like to swap over my entire system. I'll be running 33's with a 2" lift to keep it legal over here so more strength isn't a high priority.
I believe the inner axle spline that slide into the birfields are 24 spline. You can put 80 inners into the 55 3Rd, but not the 55 inners into the 80 birfs. You will need custom length 24 spline inners. The knuckle balls can be put on the 55 housing, you will have to machine down the ball sleeve a little. If you got a fj60 front housing, you could install 4plus products axle sleeves into each end and you would have the width of a front 80 axle. You would have to get custom inners for each side. Trail gear could make those for you.
According to the trailgear website they have upgrade 30 spline inners and for the 80. I assume the 30 spline 80 birfs would match the 30 spline 40 inners.They make fj80 30 spline birfs? I thought they were 24 spline?
Huh interesting. If you post this in the hard core section you will get more replies. The other issue will be steering. You may need. High steer kit or something. Personally I would make the front close to fj80 width and then you can use the fj80 rear axle as well. You could get rims that are recessed more to keep track width narrower.