Re: TOY: Re: Axle widths

["Erik Bibelheimer" <thebeebs@xxxxxxx>]

Yeah, I think I remember reading a post a while back about that.  It
sounded a lot more involved than what I am thinking it would take for the
T100 axle.  I'd check the archive, but I don't think there is one for this
list yet.

FJ80 rear pros:  full floater(?), disk brakes, bigger & stronger parts all
around (I assume).
FJ80 rear cons:  loss of ground clearance under the pumpkin (I assume), you
don't have any of the parts yet, custom axle shafts necessary, overall cost
due to custom shafts & more complex housing mod, and you would need to buy
an entire axle including electric locker (although you seem to have a knack
for finding that kind of stuff for next to nothing!)

T100 rear pros:  no custom shafts, you already have the locker, more ground
clearance (I assume),  less complex housing mod, probably cheaper overall
and cheaper to repair if/when necessary.
T100 rear cons:  less strength (at least probably the R&P), not
full-floater, drum brakes.

To use the T100 axle, you would just need the complete T100 axle (minus 3rd
member), an '86-up 8" axlehousing (a cheap bent one would probably even
work, or you could use the pre-modified-for-a-locker one you have now if
it's the newer version), and you already have the e-locker.

To use the FJ80 rear axle you would need the entire rear axle including
e-locker, plus the custom axleshafts.  Also, James S. is in OZ, so I don't
know if that complicates things or not.

Just more stuff to think about I guess (as if you're not already).
IMHO, the T100 axle mod looks like it might be a good choice.  Of course, I
don't know what your ultimate plans are for this truck and maybe you "need"
all the extra strength you can get.  I think mini-truck rear axle failure
is pretty rare (especially with stock-ish motors), even with the smaller
R&P.  I also think most R&P failure is due to being throttle-happy and
bouncing trying to get up an obstacle, etc.

- -- Erik Bibelheimer,  Citrus Heights, CA
http://home.off-road.com/~bibelheimer
'86 4Runner
'97 T100

>
> Date: Thu, 30 Mar 2000 13:12:27 -0500
> From: "Karl Bellve, Ph.D." <Karl.Bellve@umassmed.edu>
> Subject: Re: TOY: Re: Axle widths
>
> Thanks for the info.
>
> James S. has been working on converting a rear 9.5" axle with an offset
> diff to a centered diff. That might be the way I will go. You will even
> get disk brakes in the deal. I would have to go with a 9.5" locker, but
> that wouldn't be a big deal, assuming I could find the axle and locker
> together.
>
>
> Erik Bibelheimer wrote:
> >
> > Regarding Marlin's page, that's why I said "FWIW."  I got Geiger to
change
> > the hi-pinion locker mistake.  I guess I'll have to let him know about
the
> > Taco locker next.  My "Diff Page" will be updated soon too.
> > It seems Marlin has had a few of those FJ80 axles, so if you gave him a
> > call he might be able to tell you what that measurement really is.  63"
> > sounds about right because I eyeballed an FJ80 next to my T100 and it
was
> > pretty close (pipe dreams of a solid axle swap :).  The Toyota
literature I
> > have for my T100 lists the "overall width" as 75.2" (that would be
body,
> > outside of tires would be slightly less) and the "Track width" as 65.4"
> > (rear, I believe this is measured center of tire tread to COTT).  If
you
> > get more serious about maybe using a T100 axle, I can measure the WMF
> > dimension for you.
> >
> > As for a wider rear axle, you know how people have front axle knuckles
cut
> > and turned a few degrees for pinion/castor angle changes, etc.?  I
wonder
> > how well it would work to cut the center section of a T100 axlehousing
out
> > and put in an 8" center section?  That way you could still use your
> > e-locker.  I might even consider that for my T100 if it works.  It
"seems"
> > like it would work pretty well to me.  I think I remember someone
saying
> > that somebody in Placerville, CA (on the way to the Rubicon from me)
cuts
> > and turns the front axles for ~$300.
> >
> > -- Erik Bibelheimer,  Citrus Heights, CA
> > http://home.off-road.com/~bibelheimer
> > '86 4Runner
> > '97 T100
> >
> > > From: Karl Bellve <Karl.Bellve@umassmed.edu>
> > > Subject: Re: TOY: Re: Axle widths
> > >
> > > Erik Bibelheimer wrote:
> > > >
> > > > According to Marlin's page (FWIW):
> > > > http://www.marlincrawler.com/tcase/mini/faqmini.html
> > > >
> > > > The '85 front axle is 55.5" WMF-WMF and the FJ80 is 63".
> > > >
> > > > -- Erik Bibelheimer,  Citrus Heights, CA
> > > > http://home.off-road.com/~bibelheimer
> > > > '86 4Runner
> > > > '97 T100
> > > > 4x4Wire.com Toyota Section http://www.4x4wire.com/toyota/
> > >
> > >
> > > Hey, he has been wrong before but he could beright about those
> > > measurments!  But, I believe the 63" is the track width and not
flange
> > > to flange...unless they are the same.
> > >
> > > Check this one out:
> > > Q: What is your opinion of the rear electric Tacoma differential?
> > >
> > > A:  I like the factory electric locker, and the larger 8.4" ring
gear.
> > >
> > > Erik, you answered that one. The Tacoma locker has an 8.0" ring gear.
He
> > > also said that a high pinion electric locker wouldn't work in a
> > > minitruck. But, he basically applied what he knew about the 9.5"
> > > electric locker to the 8.0 electric locker.
> > >
> > > So, I am still looking for an appropiate rear axle to work with a
front
> > > FJ80 axle. IFS axle is 58" wide...too narrow...
> > >
> > > The axle has to accept an 8.0" electric locking diff.
> >
> > 4x4Wire.com Toyota Section http://www.4x4wire.com/toyota/
>
> - --
> Cheers,
>
>
>
> Karl Bellve, Ph.D.                   ICQ # 13956200
> Biomedical Imaging Group             TLCA# 7938
> University of Massachusetts
> Email: Karl.Bellve@umassmed.edu
> Phone: (508) 856-6514
> Fax:   (508) 856-1840
> PGP Public key: finger kdb@molmed.umassmed.edu
>