Has anyone used the OBX Diff in the 1.8 housing? - Miata Turbo Forum - Boost cars, acquire cats.

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Old 11-22-2009, 06:14 PM   #1
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Default Has anyone used the OBX Diff in the 1.8 housing?

I keep seeing the OBX diff on ebay, just wondering if anyone has tried it in a 1.8 housing?
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Old 03-05-2010, 12:05 AM   #2
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this.
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Old 03-05-2010, 12:09 AM   #3
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I haven't heard of anyone using the diff in the miata, but I know a bunch of people using the diff in their turbo Honda's. They work really well, but apparently the rule of thumb is to replace all of the bolts in the unit. It's something like the Greddy turbo kit, the bolts they included are crap and break.
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Old 03-05-2010, 12:24 AM   #4
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I may be picking one up to go in my soon to be 4.10. There is a place online that will sell you a rebuild kit that includes 12.9 grade hardware and new belleville washers for like 36 bucks shipped. If I end up going that route, I plan on doing a write up.
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Old 03-05-2010, 02:24 AM   #5
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Old 03-05-2010, 02:35 AM   #6
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No joke on that GREDDY kit!!! But serious, a Honda diff? Thats a new one on me. Personally RX-7 LSD for me ;-)
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Old 03-05-2010, 02:47 AM   #7
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I'm holding off, I picked up a torsen swap for 600 last night from a local.
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Old 03-05-2010, 02:51 AM   #8
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There you go. That will work
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Old 03-06-2010, 01:04 AM   #9
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my buddy had one in his N/A rx-7 and drifted in it. Never had a problem with it.
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Old 03-06-2010, 12:54 PM   #10
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What year Rx7?

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Originally Posted by wildfire0310 View Post
my buddy had one in his N/A rx-7 and drifted in it. Never had a problem with it.
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Old 03-08-2010, 01:25 PM   #11
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This might be a VERY relevant question to those who are pondering a budget V8 swap and dont want to custom fab a new rear setup too.

That article is great. It looks like the OBX is a different design overall than the Quaiffe. So maybe it is a knock-off of something else, or maybe it is its own design, which would be pretty cool IMHO. Replacing some washers and bolts is not a big deal.
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Old 03-08-2010, 01:47 PM   #12
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Quote:
Originally Posted by Sparetire View Post
This might be a VERY relevant question to those who are pondering a budget V8 swap and dont want to custom fab a new rear setup too.

That article is great. It looks like the OBX is a different design overall than the Quaiffe. So maybe it is a knock-off of something else, or maybe it is its own design, which would be pretty cool IMHO. Replacing some washers and bolts is not a big deal.

dont forget replacing your diff fluid every motor oil change. did you see those gear teeth!?
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Old 03-08-2010, 01:53 PM   #13
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Good point. They probably will wear in with a lot of particles, at least at first.
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Old 03-08-2010, 02:04 PM   #14
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Quote:
Originally Posted by Myspeed123 View Post
No joke on that GREDDY kit!!! But serious, a Honda diff? Thats a new one on me. Personally RX-7 LSD for me ;-)


dude, stop huffing paint
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Old 03-08-2010, 02:12 PM   #15
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In for answers on this as well.
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Old 03-08-2010, 03:04 PM   #16
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Same here... waiting for hustler to chime in with his "chinese" story
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Old 03-08-2010, 11:52 PM   #17
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I've put the OBX in my 1.8 4.1 rear end. I also installed the hardware kit Jeff mentioned earlier. I'm running a turbo 1.6 with a 6 speed. So far, I'm happy with it. It handles 180-200 HP and works perfectly. I autox the car and don't baby it on the street.
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Old 03-09-2010, 09:36 AM   #18
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thats good to hear! finally someone has used it...how long ago was this???
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Old 03-09-2010, 10:30 AM   #19
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Where do you get the kit? I have one (bought from someone here), but haven't used it yet.
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Old 03-09-2010, 11:05 AM   #20
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This link shows how to rebuild the OBX and at the bottom it appears the guy sells the upgraded bolts and belleville washers for $32.

OBX Differential Washers
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