70 front axles vs. 80 front axles

[montezuma]

What's the difference? I've seen some 70 front axles that look like FJ80 fronts, but look like they have a four bolt top cap, where the 80's only have a two bolt top cap. Has any one ever tried to swap knuckles from a 90's model 70 to an 80 to try and get high steer? Does anyone have a link to highsteer for either one of these axles? I've been searching this for a few days, and haven't been able to find anything out, and could use some help.

Thanks.

[thrashlux]

I have put 80 series knuckles on 79s diff housing no probs (convert to six stud)

dont know if this is any help with regard to the earlier 70 series stuff though

pretty sure the 79 series has a 2 bolt top plate like the 80

thrashlux

[montezuma]

I have put 80 series knuckles on 79s diff housing no probs (convert to six stud) dont know if this is any help with regard to the earlier 70 series stuff though pretty sure the 79 series has a 2 bolt top plate like the 80 thrashlux

Did any of the 70 series cruisers come with a high pinion front, and four bolt top cap on the knuckles?

[Mr DJ]

Not sure how similar they are but my bundera front diff (from RJ70) has same 8" high pinion front diff as 80 ser. and 4 bolt top & bottom steering arms on knuckle.
Think the axels and CV's may be smaller dia. than the 80 ser. as well as the 80 ser. swivel hub bearings being larger than the 70.

[bj on roids]

Not sure how similar they are but my bundera front diff (from RJ70) has same 8" high pinion front diff as 80 ser. and 4 bolt top & bottom steering arms on knuckle.
Think the axels and CV's may be smaller dia. than the 80 ser. as well as the 80 ser. swivel hub bearings being larger than the 70.

Only the centre is shared. Everything else is different.

[montezuma]

[/quote] Only the centre is shared. Everything else is different.[/quote]

Do you know if the outer knuckles of a 70 series, will fit over the inner knuckles of an 80 series?

BTW, I dig the sniper cat avatar. Funnay.

[thrashlux]

This is what I have observed in pulling various trucks apart
there are two diferent types of knuckle(swivle hub) assy

the first is smaller and has 4 bolts top and bottom and is found on,hilux(toyota pickup for you US boys),bundera , early landcruiser ie 40s,55s ,60s,70s till the first update in about 1990

the second larger one with bigger cvs and 2 bolt top was fitted into the 75 when the 4.5 and 1hz were fitted this is also when the high pinion was fitted in the 75s
the big swivel hubs with the 2 bolt top were fitted to 75s(1990 on) ,80 series ,105s ,79s,78s

there are some small variatons even within the two groups but they are minor .ie 79s has diferent stud patern and diferent setup to suport the cvs

hope that helps

if any one can correct me as this is off the top of my head or add information that would be great the more that can be compiled the better

cheers

thrashlux

[mule75]

all 75's are 4 bolt tops

[thrashlux]

all 75's are 4 bolt tops

So just confirming 75 series from start to finish (till the 79s came out) have 4 top bolts icluding say a 1996 model

next thing are they the bigger style cv/ swivel hub on post 1990 75s

thanks for the imput

thrashlux

[montezuma]

all 75's are 4 bolt tops

So just confirming 75 series from start to finish (till the 79s came out) have 4 top bolts icluding say a 1996 model

next thing are they the bigger style cv/ swivel hub on post 1990 75s

thanks for the imput

thrashlux

This is ultimately what I'm curious about.

I can get high steer that will clear leaf springs for the 70 series trucks here in the U.S., but not for the 80 series because of the two top bolts. if the knuckle for a 75 will fit an 80, it would solve alot of problems.

[RUFF]

all 75's are 4 bolt tops

So just confirming 75 series from start to finish (till the 79s came out) have 4 top bolts icluding say a 1996 model

next thing are they the bigger style cv/ swivel hub on post 1990 75s

thanks for the imput

thrashlux

Mule is correct. Where the difference lies in the 75 series is when the HZJ75 came around. The CV was made ever so slightly larger in the bell area but the Swivel its self never changed throughout the 75 series. Although the HZJ75 also had a high pinion front fitted instead of the earlier large rear style centre.

The 79 series is an entire different animal. Although i have never actually done any work with one im lead to beleive the swivel is interchangable with an 80 series. But this only acheives a 6 stud conversion on the 79.

[evanstaniland]

Is it possible to convert a 100s into a 6 stud using a 80s knuckle??

Evan

[RUFF]

Is it possible to convert a 100s into a 6 stud using a 80s knuckle??

Evan

Wally would know for sure. Im pretty certain the CV is the same so its quite possible.

[dow50r]

Is it possible to convert a 100s into a 6 stud using a 80s knuckle??

Evan

Wally would know for sure. Im pretty certain the CV is the same so its quite possible.

All you need to use is the 100 hub,disc and calliper and its 5 stud...but then you find the splines on the constant c/v are different, and you need to run 78/79/105 free wheeling hubs to mate the 80 c/v...no big deal.
Andrew

[thrashlux]

I converted A 79series to 6 stud it was so easy i could not beleive it

All i did was take the whole lot off an 80 (big brake model) (swivel hub out) and bolted it straight on

no mods just bolt up action it would be the same for a 105

Hey if you do this I may be interested in everything you bolted off (all the 5 stud stuff)

cheers

[bj on roids]

Only the centre is shared. Everything else is different.[/quote]

Do you know if the outer knuckles of a 70 series, will fit over the inner knuckles of an 80 series?

BTW, I dig the sniper cat avatar. Funnay.[/quote]

NO they wont.

[bj on roids]

Is it possible to convert a 100s into a 6 stud using a 80s knuckle??

Evan

Wally would know for sure. Im pretty certain the CV is the same so its quite possible.

All you need to use is the 100 hub,disc and calliper and its 5 stud...but then you find the splines on the constant c/v are different, and you need to run 78/79/105 free wheeling hubs to mate the 80 c/v...no big deal.
Andrew

Yep you can swap them around. In fact I think Andrew has even put 80 diffs under his 100 series to get the 6 stud.