Notices
Suspension, Brakes, Drivetrain discuss the wondrous effects of boost and your miata...
Sponsored by:
Sponsored by: 949 Racing

Tochigi Fuji Diff - Worth $200?

Old Jul 19, 2016 | 01:55 PM
  #1  
Bodhimeister's Avatar
Thread Starter
Junior Member
 
Joined: Jul 2015
Posts: 77
Total Cats: -7
Default Tochigi Fuji Diff - Worth $200?

I have the opportunity to purchase a TF diff from a 2003, along with axles, no housing included, for $200 shipped. Is it worth the money to dink around with? Or will the cone tab break too quickly for me to have fun? It's an 81k mile diff, so I wonder if it's a "Well it's lasted this long, so it must be okay for a while" or a "81k? That's gonna blow soon" kind of thing. Thanks.
Attached Thumbnails Tochigi Fuji Diff - Worth 0?-17658.jpg   Tochigi Fuji Diff - Worth 0?-17659.jpg  

Last edited by Bodhimeister; Jul 19, 2016 at 02:09 PM.
Old Jul 19, 2016 | 01:59 PM
  #2  
18psi's Avatar
VladiTuned
iTrader: (76)
 
Joined: Apr 2008
Posts: 35,821
Total Cats: 3,482
Default

considering it will cost like 60 to ship, yeah that's a deal if it's not broken already
Old Jul 19, 2016 | 02:01 PM
  #3  
Bodhimeister's Avatar
Thread Starter
Junior Member
 
Joined: Jul 2015
Posts: 77
Total Cats: -7
Default

Originally Posted by 18psi
considering it will cost like 60 to ship, yeah that's a deal if it's not broken already
I'm on the other side of the state, but I do suppose those axles will make for a tough ship. Do you know where he might look to find the tab that's typically broken? Where it's broken off of?
Old Jul 19, 2016 | 02:14 PM
  #4  
psyber_0ptix's Avatar
Elite Member
iTrader: (4)
 
Joined: Mar 2012
Posts: 4,648
Total Cats: 544
From: Northern VA
Default

I have the diff unit along with the ring and pinion just sitting in a box outside. if you want it, come get it. lol
Old Jul 19, 2016 | 02:18 PM
  #5  
Bodhimeister's Avatar
Thread Starter
Junior Member
 
Joined: Jul 2015
Posts: 77
Total Cats: -7
Default

Originally Posted by psyber_0ptix
I have the diff unit along with the ring and pinion just sitting in a box outside. if you want it, come get it. lol
Really? It's that bad? Or is yours shot?
Old Jul 19, 2016 | 02:25 PM
  #6  
Savington's Avatar
Former Vendor
iTrader: (31)
 
Joined: Nov 2006
Posts: 15,442
Total Cats: 2,106
From: Sunnyvale, CA
Default

I think I'd be inclined to spend the extra $300 and get a Torsen just so I didn't have to do the entire job over again when the T-F inevitably breaks :P
Old Jul 19, 2016 | 02:28 PM
  #7  
Bodhimeister's Avatar
Thread Starter
Junior Member
 
Joined: Jul 2015
Posts: 77
Total Cats: -7
Default

Originally Posted by Savington
I think I'd be inclined to spend the extra $300 and get a Torsen just so I didn't have to do the entire job over again when the T-F inevitably breaks :P
The only reason I'm considering it is because I'm on a highschooler summer job budget, but if the Torsen is the way to go, that's what I'll do.
Old Jul 19, 2016 | 02:33 PM
  #8  
Savington's Avatar
Former Vendor
iTrader: (31)
 
Joined: Nov 2006
Posts: 15,442
Total Cats: 2,106
From: Sunnyvale, CA
Default

If you are ultra-budget critical, the Rx7 diff is what I'd look at. They can be found in junkyards for around the same price as the T-F, and while they aren't quite as good, they won't break eventually. I bought an Rx7 diff with my food money in college, and it worked fairly well for the price. I ended up trading it to someone for a Torsen eventually, though.

Alternatively, try to find someone with a loose Torsen unit which is less valuable than a unit that's already set in a pumpkin with gears.

The T-F is like putting $200 on the shelf above your fireplace and leaving the window open on a breezy evening. The cash is on the shelf right now, but it's going to go in the fire at some point.
Old Jul 19, 2016 | 02:34 PM
  #9  
psyber_0ptix's Avatar
Elite Member
iTrader: (4)
 
Joined: Mar 2012
Posts: 4,648
Total Cats: 544
From: Northern VA
Default

It was a spare diff that I used the housing for an OSGiken and 3.63 gears. I never ran it. I wouldn't run it.

When do you NEED a torsen by? I will have a whole drop and swap subframe/arms/4.1 torsen diff available in the coming weeks. Just provide your own 1.8 Driveshaft if you don't already have one.
Old Jul 19, 2016 | 02:47 PM
  #10  
Bodhimeister's Avatar
Thread Starter
Junior Member
 
Joined: Jul 2015
Posts: 77
Total Cats: -7
Default

Originally Posted by Savington
If you are ultra-budget critical, the Rx7 diff is what I'd look at. They can be found in junkyards for around the same price as the T-F, and while they aren't quite as good, they won't break eventually. I bought an Rx7 diff with my food money in college, and it worked fairly well for the price. I ended up trading it to someone for a Torsen eventually, though.

Alternatively, try to find someone with a loose Torsen unit which is less valuable than a unit that's already set in a pumpkin with gears.

The T-F is like putting $200 on the shelf above your fireplace and leaving the window open on a breezy evening. The cash is on the shelf right now, but it's going to go in the fire at some point.
Interesting, I'll look into that. Thank you.

Originally Posted by psyber_0ptix
It was a spare diff that I used the housing for an OSGiken and 3.63 gears. I never ran it. I wouldn't run it.

When do you NEED a torsen by? I will have a whole drop and swap subframe/arms/4.1 torsen diff available in the coming weeks. Just provide your own 1.8 Driveshaft if you don't already have one.
My open 1.6 has been on turbo for 1k easy miles strong, and I have a backup 1.6 VLSD for when the open goes. So I don't need it right now. Do you have an estimated price point?
Old Jul 19, 2016 | 02:58 PM
  #11  
psyber_0ptix's Avatar
Elite Member
iTrader: (4)
 
Joined: Mar 2012
Posts: 4,648
Total Cats: 544
From: Northern VA
Default

Probably going rate for the diff, but you can decide what you want to do with the subframe, control arms, knuckles, axles if you don't want to keep them. Where are you located.
Old Jul 19, 2016 | 03:46 PM
  #12  
Bodhimeister's Avatar
Thread Starter
Junior Member
 
Joined: Jul 2015
Posts: 77
Total Cats: -7
Default

Originally Posted by psyber_0ptix
Probably going rate for the diff, but you can decide what you want to do with the subframe, control arms, knuckles, axles if you don't want to keep them. Where are you located.
I'm up in Michigan.
Old Jul 19, 2016 | 03:54 PM
  #13  
thumpetto007's Avatar
Elite Member
iTrader: (15)
 
Joined: Sep 2010
Posts: 2,041
Total Cats: -117
Default

Originally Posted by Savington
The T-F is like putting $200 on the shelf above your fireplace and leaving the window open on a breezy evening. The cash is on the shelf right now, but it's going to go in the fire at some point.
I like this analogy.
Old Jul 19, 2016 | 04:27 PM
  #14  
rleete's Avatar
Elite Member
iTrader: (21)
 
Joined: Jun 2007
Posts: 6,794
Total Cats: 1,342
From: Rochester, NY
Default

What's the going rate on OBX torsen diffs these days?

Edit: Holy ****, $360 and up on ebay.
Old Jul 19, 2016 | 05:34 PM
  #15  
EricJ's Avatar
Junior Member
 
Joined: Mar 2013
Posts: 241
Total Cats: 27
From: Flower Mound, TX
Default

It would depend on what you're planning on doing with it. If you're driving on the street and some AutoX in an NA car, it's better than an open diff.

I had a TF with a 4.3 that I AutoX'd and did track days for 2 or 3 years. I only pulled out 1 small tab. It continued to work. The TF is lighter than a Torsen.
... but, the Torsen will last longer and it puts down more power to the wheel with traction. 2.5 to 1 rather than the TFs 2 to 1.
I found a used Torsen w/ a 4.3 and put it in.
Old Jul 19, 2016 | 05:47 PM
  #16  
Bodhimeister's Avatar
Thread Starter
Junior Member
 
Joined: Jul 2015
Posts: 77
Total Cats: -7
Default

Originally Posted by EricJ
It would depend on what you're planning on doing with it. If you're driving on the street and some AutoX in an NA car, it's better than an open diff.

I had a TF with a 4.3 that I AutoX'd and did track days for 2 or 3 years. I only pulled out 1 small tab. It continued to work. The TF is lighter than a Torsen.
... but, the Torsen will last longer and it puts down more power to the wheel with traction. 2.5 to 1 rather than the TFs 2 to 1.
I found a used Torsen w/ a 4.3 and put it in.
I believe I'll just wait for a Torsen then. I'm FI, pushing 160, hopefully 200 soon. No sense in buying a band aid.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Schuyler
Insert BS here
36
Jul 24, 2016 12:53 PM
LownSlow616
DIY Turbo Discussion
14
Jul 18, 2016 10:45 PM
YankyMate
DIY Turbo Discussion
1
Jul 2, 2016 11:14 PM
albumleaf
General Miata Chat
5
Jul 2, 2016 05:16 PM
rigidbigelsworth
Miata parts for sale/trade
2
Jun 21, 2016 01:22 PM


Thread Tools
Search this Thread

All times are GMT -4. The time now is 10:02 PM.