| Author | Topic |
|---|
Location:
Perth
Registered:
December 2003
|
|
AE86 Diff (Will this work?)
|
Tue, 30 March 2004 06:58
|
 |
Hi,
I've been thinking about changing the ratio of my S Series Diff from a 3.9 to a 4.1.
First of all I have a 3.727 S Series diff and a 3.9 standard Aust spec diff. The 3.727 has a 41 teeth crown wheel and 11 teeth pinion while the 3.9 diff has a (correct me if I'm wrong) 39 teeth crown wheel and 10 teeth pinion.
So I'm wondering, how about if I use the 10 teeth pinion from the 3.9 and match it with the 41 teeth crown wheel from the 3.727 which would give me a ratio of 4.1. Will this work? will the 10 teeth pinion be compatible with the 41 teeth crown wheel? I think this will work, but then again I don't really know how gear and stuff work  ...
Thanks
|
|
|
Location:
Brisbane
Registered:
May 2002
|
|
Re: AE86 Diff (Will this work?)
|
Tue, 30 March 2004 07:01
|
|
No, you can't mix-and-match the crownwheel and pinion; they go together as a pair.
|
|
|
Location:
Melbourne
Registered:
May 2002
|
|
Re: AE86 Diff (Will this work?)
|
Tue, 30 March 2004 07:10
|
|
well you can - but they will not work to well!! you can only mix & match when the parts are new (within reason)
there is a story about colin chapman making a 4.1:1 diff out of parts this way in a hillclimb car - but he ran the diff for 100miles on a cutting paste then threw away the bearings etc - just kept the ring/pinion. me thinks it's easier just to get the right parts.
T
|
|
|
Location:
Perth
Registered:
December 2003
|
|
Re: AE86 Diff (Will this work?)
|
Tue, 30 March 2004 08:25
|
|
So I can't mix pinion and crownwheel  I really want to find out for sure, but I can't be bother pulling out the 3.9 diff since it is still on the car. Anyway so anyone know if there is other S Series centre that has a 4.1 ratio?
Thanks
|
|
|
Location:
S.E suberbs, Vic
Registered:
December 2003
|
|
Re: AE86 Diff (Will this work?)
|
Tue, 30 March 2004 09:14
|
|
|
doesnt the T-18 run a 4.3:1 ratio?
|
|
|
Location:
Montrose, VIC
Registered:
May 2002
|
|
Re: AE86 Diff (Will this work?)
|
Tue, 30 March 2004 11:54
|
|
Nope. The T18s run a T292, 4.3 T diffs are kinda hard to find. Plus the gears won't fit an S diff 
|
|
|
Location:
NSW, East Coast
Registered:
July 2003
|
|
Re: AE86 Diff (Will this work?)
|
Tue, 30 March 2004 12:52
|
|
| mrshin wrote on Tue, 30 March 2004 21:54 |
Nope. The T18s run a T292, 4.3 T diffs are kinda hard to find. Plus the gears won't fit an S diff
|
Would the t series diff bolt straight up, you would need to modify the prop of course.
|
|
|
I supported Toymods
Location:
Perth, WA
Registered:
May 2003
|
|
Re: AE86 Diff (Will this work?)
|
Tue, 30 March 2004 15:28
|
|
|
T series bolts up. You need the t18/jdm ae86 tailshaft because it is slightly shorter.
|
|
|
Location:
Perth
Registered:
December 2003
|
|
Re: AE86 Diff (Will this work?)
|
Tue, 30 March 2004 16:05
|
|
The reason for going through all the trouble of mix and match crownwheel and pinion is that I don't really want to do a rear end swap, and its not like T series rear end is cheap or easy to find.
btw what type of diff is in an Aus spec T18? and what the hell does a TE35 look like? do they sell them in Australia?
thanks
|
|
|
I supported Toymods
Location:
Perth, WA
Registered:
May 2003
|
|
Re: AE86 Diff (Will this work?)
|
Tue, 30 March 2004 16:59
|
|
T18 has a T series diff. Theyre cheap as chips and you can get an lsd for them, ie zenki ae86 lsd.
have fun
-ian
|
|
|
Location:
Perth
Registered:
December 2003
|
|
Re: AE86 Diff (Will this work?)
|
Wed, 31 March 2004 15:45
|
|
| ae95 wrote on Wed, 31 March 2004 02:59 |
T18 has a T series diff. Theyre cheap as chips and you can get an lsd for them, ie zenki ae86 lsd.
have fun
-ian
|
Are you sure about this Ian? I'm talking about local T18 Toyota with rear drum not imported one. I thought they use the same diff as the Sprinter.. anyway how cheap is cheap? you wouldn't have one laying around would you? 
|
|
|
Location:
Brisbane
Registered:
May 2002
|
|
Re: AE86 Diff (Will this work?)
|
Wed, 31 March 2004 23:41
|
|
Yes, all T18's have T series diffs, as do most live-axle Celicas. I've seen plenty of T18's at the wreckers with diff intact, and you can typically pick one up for $100 tops.
|
|
|
Registered:
November 2002
|
|
Re: AE86 Diff (Will this work?)
|
Thu, 01 April 2004 00:04
|
|
If you really want to get up and boogie off the line, hunt down a 4WD Liteace Van Wagon and grab the front (yes, front) differential out of that, its a 4.3 ratio (usually, model dependent) and the crown wheel and pinion does fit into a T series centre.
Cheers,
Mitch.
|
|
|
I supported Toymods
Location:
Perth, WA
Registered:
May 2003
|
|
Re: AE86 Diff (Will this work?)
|
Thu, 01 April 2004 07:45
|
|
Yes im 100% certain.
And yes they are bloody cheap. Try a pick a part type wrecker if your competent with the work, theyre ussually the cheapest. Or maybe look through the paper for someone wrecking one.
have fun
-ian
|
|
|
Location:
Albany WA
Registered:
October 2003
|
|
Re: AE86 Diff (Will this work?)
|
Thu, 01 April 2004 14:25
|
|
|
Can the T18 diff be disc braked without trauma? Any ideas?
|
|
|
I supported Toymods
Location:
Perth, WA
Registered:
May 2003
|
|
Re: AE86 Diff (Will this work?)
|
Thu, 01 April 2004 16:16
|
|
Could be done.
Get some brakes which are bigger than the stock ae86 ones 
|
|
|
Location:
Sydney, Australia
Registered:
May 2002
|
|
Re: AE86 Diff (Will this work?)
|
Thu, 01 April 2004 20:45
|
|
remember T18's run a 3.7:1 diff.. make sure you grab the tailshaft as well, I think they're slightly different lengths.
Otherwise I think an RA40 diff will also bolt up, and runs a 4.1:1 centre.
But I've never done it, so don't hold me to it. Just get out to Pick'n'Payless with a tape measure 
sam
|
|
|
I supported Toymods
Location:
Perth, WA
Registered:
May 2003
|
|
Re: AE86 Diff (Will this work?)
|
Thu, 01 April 2004 21:54
|
|
Yep you need the t18 tailshaft. Its only slightly shorter but you will need it.
Dont know about the RA40 conversion, anyone got more info on it?
thanks
|
|
|
Location:
Albany WA
Registered:
October 2003
|
|
Re: AE86 Diff (Will this work?)
|
Sat, 03 April 2004 14:36
|
|
| ae95 wrote on Fri, 02 April 2004 00:16 |
Could be done.
Get some brakes which are bigger than the stock ae86 ones
|
OK. Nissan Skyline R32 GTS discs and calipers. Pretty sure theyre 4 stud. I'll weild the oxy, you tell me what I have to do....
Then we combine it with this front brake kit http://www.technotoytuning.com/t3_site_pages/produ cts/big_brakes.html
|
|
|
I supported Toymods
Location:
Perth, WA
Registered:
May 2003
|
|
Re: AE86 Diff (Will this work?)
|
Sun, 04 April 2004 08:43
|
|
Nice brakes.
If your talking about the non turbo r32 then yes its 4stud, so is the r33. R34 n/a is 5stud.
|
|
|
Location:
Albany WA
Registered:
October 2003
|
|
Re: AE86 Diff (Will this work?)
|
Mon, 05 April 2004 10:12
|
|
|
Hmmm, can get the diff, can probly get the brakes & calipers, now, how to make it work? Any ideas? Anyone done anything remotely like this before?
|
|
|
Location:
Albany WA
Registered:
October 2003
|
|
Re: AE86 Diff (Will this work?)
|
Mon, 12 April 2004 12:49
|
|
|
OK, got the concept sussed, will hit the wreckers with a tape measure to see if the T-18 diff is OK width wise. Probably have to fabricate my own backing plate, I'll talk to some local engineers, see if they can make em for me. My current S series has a buggered wheel bearing I can't get out, hence the need....
|
|
|
Banned user
Location:
ADELAIDE - The Drift City
Registered:
July 2002
|
|
Re: AE86 Diff (Will this work?)
|
Mon, 12 April 2004 14:06
|
|
|
just use the T18 backing plates, pull out the S series and put the T series in,dont waste time measuring as myself and others on here will vouch for the fact it WILL fit.
|
|
|
Location:
Albany WA
Registered:
October 2003
|
|
Re: AE86 Diff (Will this work?)
|
Mon, 12 April 2004 14:52
|
|
|
When I refer to the backing plate, I mean the bit the caliper hangs off of. This is how I have observed the disc brake to work on a R31 Pintara diff, anyway.
|
|
|
Location:
Albany WA
Registered:
October 2003
|
|
Re: AE86 Diff (Will this work?)
|
Mon, 12 April 2004 15:04
|
|
|
Also, is there ANY difference in the width whatsoever? I am quite tight for room wheel-wise. Other than that, I gather the housing is a bolt in fit.
|
|
|
Location:
Melbourne
Registered:
August 2004
|
|
Re: AE86 Diff (Will this work?)
|
Fri, 03 June 2005 07:30
|
|
hey look! the search function does work! 
ok... so for me to install a Kaaz 2way in an aus spec sprinter i will need to get a T series (T18) diff housing and the prop shaft and thats it?
im a complete n00b when it comes to mechanics and understanding how shit works but im pretty good with working on shit once i know how it works.
now... people are going to get angry at what im going to ask but i have been looking though threads including the ones at the top which i thought would have had stuff on what im about to ask as i thought it would be quite common to do.
1. when i get the diff and tail shaft do i simply bolt the old drums back on to the T series or do i use the drums that are already on it if i remove it with everything or is that just not how it works at all 
i'll continue to search thru the thousands of threads that mention diff in the meantime.
thanks.
|
|
|
Location:
S.E suberbs, Vic
Registered:
December 2003
|
|
Re: AE86 Diff (Will this work?)
|
Fri, 03 June 2005 15:13
|
|
|
can someone confirm if the liteace diff gears fit into a t-18 housing?
|
|
|
