Toyspeed.org.nz Message Board

by **beeker** » Sun Dec 21, 2008 8:04 pm

About 12 months ago i purchased 2x spare prefacelift axles for my AE86. Due to an accident (Bent the left axle and rotor), I ended up having to use one, and a 3rd party installed it along with my spare rear rotor (this rotor was previouly on my car).

All seemed to go well until i purchased 2x new rear rotors and attempted to install them over the recently installed left axle. Unfortunely, it doesnt fit (easily or at all), and the reality you would have to bash it with a hammer to have any chance of getting it on (something i'm unwilling to do!). I made the assumption it was a poor product, and purchased a new set from a different manufacturer (QH). Same problem, they wont fit over the outter edge of the axle. See the red bit below where the rotor jams on.

I'm come to the conclusion that this axle set may somehow not be an AE86 axle set ? and be slightly larger on the ~stud plate (marked in red above).

Can anyone shed any light on this ?

PS. What i cant explain is why my old spare rear rotors fit over both my old and new axles. They obviosly have more clearence.

Website · by **Rick** » Sun Dec 21, 2008 8:29 pm

Whats the diameter red part? The axles maybe off a Corona or similar which have larger rear brakes from memory?

by **Mr Revhead** » Sun Dec 21, 2008 10:57 pm

you sure you got ae86 rotors and not ae82 or ae92? wouldnt be the first time a parts person did that

by **shihad** » Sun Dec 21, 2008 11:52 pm

yea I ordered 86 front rotors from b n t and they were wrong (ordered through a mate who is adamant that they are whats listed under 86) anyone got any suggestions as to how to get 86 rotors from b n t lol.
has anyone successfully ordered 86 rotors from b n t?

by **beeker** » Mon Dec 22, 2008 6:20 am

Mr Revhead wrote:you sure you got ae86 rotors and not ae82 or ae92? wouldnt be the first time a parts person did that

It was the same PN as i previously got from race brakes and installed successfully on my old axles.

by **Mr Revhead** » Mon Dec 22, 2008 6:03 pm

so are you sure you got the correct ones.. like wrong in box or something
first thing i'd do is go back where i got them from

by **beeker** » Mon Dec 22, 2008 6:13 pm

Mr Revhead wrote:so are you sure you got the correct ones.. like wrong in box or something
first thing i'd do is go back where i got them from

For these new rotors, have tried 2x different suppliers and 2x different manufacturers. Same issue.

by **jondee86** » Mon Dec 22, 2008 7:03 pm

Time to get the measuring stick out then !!!!

Cheers... jondee86

by **sleeektoy** » Mon Dec 22, 2008 10:33 pm

they wouldnt be T-Series Drum brake axles??
i know 86 discs wont fit over my TA22 ones

by **NZ_AE86** » Tue Dec 23, 2008 9:09 am

They have to be the correct axles due to the bearing size. I have had this problem before, I found that there were 2 different sizes. What is the outside dia. of the axle flange?

by **beeker** » Tue Dec 23, 2008 8:18 pm

NZ_AE86 wrote:They have to be the correct axles due to the bearing size. I have had this problem before, I found that there were 2 different sizes. What is the outside dia. of the axle flange?

New Axle measurements:
Outter: approx 139.1mm
Inner ~hub centric ring: approx 60.0mm

The old axles are oh so close, and perhaps .1mm smaller on average for both the inner and outter. I get a slight different every time.

The more i play with the spare, it looks like the inner hub centric ring is just to tight.

Ideas ?

Should i just be filing the rotor and axle down ?

by **beeker** » Tue Dec 23, 2008 8:20 pm

sleeektoy wrote:they wouldnt be T-Series Drum brake axles??
i know 86 discs wont fit over my TA22 ones

Does the TA22 axles fit into the AE86 housing and diff head thou ?

by **rollaholic** » Tue Dec 23, 2008 10:02 pm

TA22 probly has a T series rear end (so same axles)

by **sleeektoy** » Wed Dec 24, 2008 6:49 am

beeker wrote:
Does the TA22 axles fit into the AE86 housing and diff head thou ?

It fits in the 86 housing but the TA22 housing/axles are the shortest of all housings and the axle only just engages the spline on the diff head

by **NZ_AE86** » Wed Dec 24, 2008 9:18 am

rollaholic wrote:TA22 probly has a T series rear end (so same axles)

Different bearings, only AE86/TE71 axles have 'silly big' bearings!

I will measure a few flanges when I get home and post up what I find.

by **Vertigo** » Wed Dec 24, 2008 9:46 am

id be making measurements and taking those back to bnt

by **Mr Revhead** » Wed Dec 24, 2008 10:49 am

NZ_AE86 wrote:I will measure a few flanges when I get home and post up what I find.

by **NZ_AE86** » Wed Dec 24, 2008 4:34 pm

Well after a measure up of 12 discs and 11 axles I don't really have an answer!

All the discs I could find had a 60mm centre (locating hole) and 140ish outside.
9 Axles had a 60mm centre (locating boss) and 139is outside.
So the disc should make a snug fit but not be interference fit.
2 axles had a 59mm centre which were custom made and must have been $&#$% up!

Can you post a pic of the disc?

by **beeker** » Wed Dec 24, 2008 5:56 pm

NZ_AE86 wrote:Well after a measure up of 12 discs and 11 axles I don't really have an answer!

All the discs I could find had a 60mm centre (locating hole) and 140ish outside.
9 Axles had a 60mm centre (locating boss) and 139is outside.
So the disc should make a snug fit but not be interference fit.
2 axles had a 59mm centre which were custom made and must have been $&#$% up!

Can you post a pic of the disc?

Its beginning to sound like axle wear (lips caused by the odd bang etc) and tear and rust, plus very fine tolerance on the new rotors is simply too tight a fit. I might try filing down the edges on the axles and also new rotors, and see if it will squeek on.

by **beeker** » Thu Jan 01, 2009 7:41 pm

Resolved with 5 minutes of filing down the edges of the axles stud plate outter edge. Just enough i guess to take the burrs and knocks off it.

Very fine tolerences.

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AE86 axles and rotors - no fit ?

AE86 axles and rotors - no fit ?

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