Broke My Diff In Half... CHEAPEST and EASIEST Miata Diff Upgrade You Can Do (RX-7 Parts)

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  • čas přidán 1. 07. 2019
  • Hopefully I don't blow any apex seals after installing this thing
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Komentáře • 332

  • @cmoore74
    @cmoore74 Před 4 lety +46

    Hey Greg... the diff carrier you’re using is from a S4 (86-88) Rx7. The S5 (89-91) carriers are 2lbs heavier. The S5 has thicker webbing across the "beam" .475 vs .320 for the S4. The S5 also has been triangulated in the beam area as well as having the lower web of the beam merge with the output shaft saddle. All in all the S5 is a beefier unit.

    • @TheCarPassionChannel
      @TheCarPassionChannel  Před 4 lety +12

      Good to know!

    • @benmarsh9236
      @benmarsh9236 Před 4 lety

      Hi cmoore74, does it matter if the diff is from N/A or turbo, are they all interchangeable?

    • @benmarsh9236
      @benmarsh9236 Před 4 lety

      I'm just talking about the carrier, not the whole diff.

    • @cmoore74
      @cmoore74 Před 4 lety

      Ben Marsh the turbo diff carrier will not work as the case itself is larger and the bolt holes don’t line up to the diff casing. I have two extra carriers if you’re interested. We could discuss over PM.

    • @benmarsh9236
      @benmarsh9236 Před 4 lety

      @@cmoore74 Yeah I'm interested. How do we PM on here?

  • @akirony
    @akirony Před 5 lety +14

    14:22 i watch for that joyous face when things actually go right.
    And RIP that front lip, may the asphalt have mercy on its soul

  • @4399daniel
    @4399daniel Před 5 lety +57

    Miata Dad back at it again with a fresh upload. It’ll be worth being late to the office for this 😎

  • @chromabalisong
    @chromabalisong Před 4 lety +2

    I just found a Miata for 600 bucks with just a broken differential with no other issue and low mileage, if he sells it to me il hopefully will be able to repair it thanks to your super helpful videos

  • @vseunos9261
    @vseunos9261 Před 5 lety +55

    Good job, thanks for the tip broke several on my v8 miata.

    • @mythicanomaly3079
      @mythicanomaly3079 Před 5 lety

      idiot

    • @dil6969
      @dil6969 Před 5 lety +8

      @@mythicanomaly3079 very rude

    • @vseunos9261
      @vseunos9261 Před 5 lety +3

      Really was that necessary

    • @vseunos9261
      @vseunos9261 Před 5 lety +2

      I can get 10 miata diffs for the price of 1 strong diff so I didn't care but its nice to know there is this possibility

    • @callen3282
      @callen3282 Před 5 lety

      @@vseunos9261 sounds like some v8 roadsters envy.

  • @miralemnermina142
    @miralemnermina142 Před 5 lety +21

    At least you didn't blow up the transmission again, can't wait for +400hp pulls

  • @miguelbueno774
    @miguelbueno774 Před 5 lety +35

    It's just like uncle Ben says with great power comes great diff destruction

    • @MrOnemanop
      @MrOnemanop Před 4 lety +2

      Uncle Ben was just a cheap Ricer......

  • @rnelson1415
    @rnelson1415 Před 5 lety +3

    I love that exhaust note, but I like seeing you back on youtube even more!

  • @jmpcrx
    @jmpcrx Před 4 lety +1

    I make that 'will it break' face too when I mess with things.. But yeah, this is such a great channel, thanks for spending so much time making all your vids.. Will be going through each one as I'm now starting my own nb turbo build, wanna get it right and learn from your mistakes!

  • @testacorsa150
    @testacorsa150 Před 5 lety +1

    13:16 The sudden unexpected beefed up zoom gave me a good laugh. Another great entertaining video. Keep it up Boiiii

  • @jwsalome
    @jwsalome Před 4 lety +1

    Saw this video when it came out. Today, I ordered the PPF delete kit for my VG30 swap. Thanks for the constant inspiration Greg. 🤟🤟🤟

  • @iancrosson9513
    @iancrosson9513 Před 5 lety

    Always improving your content! Love hearing that turbo.

  • @BuddhaOfDarkness
    @BuddhaOfDarkness Před 5 lety

    Great video with lot's of incidental tips and stats to learn from as usual.

  • @alantran6901
    @alantran6901 Před 5 lety +39

    Weld plates onto the stock diff. It's cheap and just as effective. Bolt on plates are never as strong or rigid.

    • @sam_scott_85
      @sam_scott_85 Před 5 lety +4

      This. The bolt-on plates are a joke.

    • @rockyrocket78
      @rockyrocket78 Před 4 lety +1

      When holes 🕳 are drilled it made it even weaker.
      I welded mine no problems

    • @devinolburgettoo8314
      @devinolburgettoo8314 Před 4 lety

      AGT also have welded plates and it’s solid

    • @OniMX5
      @OniMX5 Před 3 lety

      What kind of plates did you use? I haven’t welded before, is it aluminum?

    • @delpedrob6994
      @delpedrob6994 Před 8 měsíci +1

      ​@@OniMX5probably some 6 or 8mm plate welded with a Tig

  • @charlesmcgehee3227
    @charlesmcgehee3227 Před 5 lety

    A broken diff? Well that answered a recent post of mine asking how well the VVT build is holding up. Great seeing you back.

  • @jarrodwest5733
    @jarrodwest5733 Před 5 lety +1

    Super nice of your diff to give your transmission a rest for a change :)

  • @callen3282
    @callen3282 Před 5 lety +2

    Would love to see an rx7 clutch pack swap to go along with the diff carrier. I have a na8 now and I never swapped the guts on my 1.6. So I have this thing laying around with nothing to do with. I devour every video you post buddy. Much love from the bluegrass state.

  • @mentallystablekanyewest1504

    The one dislike is the diff carrier

  • @miatasman9594
    @miatasman9594 Před 5 lety +13

    So glad you posted this after I got mine Haha I'm sure the price on rx7 housings is gonna skyrocket actually watched your diff bushing video last week rock on Greg!!!

    • @deanedwards5030
      @deanedwards5030 Před 5 lety +1

      Do the RX7 housing use the same axle seals as the MX5, or are they RX7 seals?

    • @miatasman9594
      @miatasman9594 Před 5 lety +1

      They are the same

    • @miatasman9594
      @miatasman9594 Před 5 lety +1

      Bushings are not though

    • @couvboiz6712
      @couvboiz6712 Před 5 lety +1

      Ken E I can’t even find any on eBay 😂

    • @couvboiz6712
      @couvboiz6712 Před 5 lety

      Ken E do you know if you have to set backlash and preload?

  • @Loopyengineeringco
    @Loopyengineeringco Před 3 lety +2

    The crack in the broken carrier runs right through the bolt hole there. If the hole was drilled, that's definitely what weakened it!

  • @christianzinn7636
    @christianzinn7636 Před 4 lety

    After seeing this I bought one from ebay for my build as extra insurance, but true to what you said with builds. Things didn't go as planned. The first one, the guy sent me the wrong part. He sent the front nose, not the rear case. He already sold the case, but was kind enough to let me return it and gave full refund. I turned around and successfully bought another case from someone else, cheaper...winning!

  • @deanedwards5030
    @deanedwards5030 Před 5 lety

    Your videos never get old 🔥✌

  • @jwsalome
    @jwsalome Před 5 lety

    Been waiting for a decent video. Had a FC diff sitting under my VG swap wondering if I could use it.

  • @finngurgens3264
    @finngurgens3264 Před 4 lety

    Love all the Easter eggs you plopped in there. I laughed.

  • @evannoriega-thomas371
    @evannoriega-thomas371 Před 5 lety +1

    Always coming through that knowledge, never knew the rx7 carrier was compatible. Thanks Greg

  • @iscos2483
    @iscos2483 Před 5 lety

    I needed this vid like a couple months ago lmfaooo I couldn’t find one at all

  • @mikeb9569
    @mikeb9569 Před 4 lety

    This just happened to my stock 2013 NC. It allowed my axle to separate as well. Luckily, the NCs mounting "ears" are on a separate mounting plate bolted to the diff.

  • @grim9515
    @grim9515 Před 5 lety

    Oh shit you're back!

  • @craig7111
    @craig7111 Před 5 lety

    I’ll be doing diff seals soon so this helps as a refresher 👍🏽👍🏽

  • @ROGUESPIRIT_
    @ROGUESPIRIT_ Před 5 lety

    Ah i thought this was going to be a clutch LSD swap out. Looking for info about that for when I swap out my welder... seems a lot cheaper than a custom diff.
    Edit: I rebuild automatic gearboxes all day and you did a good install on that drive shaft seal. Perfectly done, you got RTV on the inside of the bolt holes too which is missed out by a lot of people.

  • @street_fighter_mx5
    @street_fighter_mx5 Před 2 lety

    Excellent video

  • @MRTuning704
    @MRTuning704 Před 5 lety +1

    A good tip on removing the axle seals and rear main seal is to drill a hole and then screw in it self tapper and then you can just pull the self tapping screw by the head with pliers

    • @Nasonix2
      @Nasonix2 Před 5 lety +1

      or yank it off with a pry bar haha

  • @zacks240sx
    @zacks240sx Před 5 lety

    Nice shirt, I'm always supporting josh

  • @braydoncoate9583
    @braydoncoate9583 Před 5 lety +3

    Bro how do you only have 90k subs still ive been here since around 70k and youre videos are epic

  • @ericgarrison5097
    @ericgarrison5097 Před 5 lety

    They built these diffs to serve the 120-140hp these Miatas came with,and they meant it. I've read mixed reactions to the rx7 diff. Some wrote they were great to supposedly like 500hp,others claim 300hp or more and it'll explode. I'm thinking if anyone is looking for more strength on a budget,the rx7 is the way to go. Me personally,I'd do either the heavy 8.8 irs or the lighter getrag. Both have plus's and minuses. 8.8 it's,is heavy but are everywhere pretty cheap. Buku parts and ring sizes are available. The getrag,it's much lighter than the 8.8,but no where near the aftermarket support and ring gears.

  • @dizzyrider3883
    @dizzyrider3883 Před 5 lety

    Nice little mention of the Ricer Miata

  • @Jaden-up3bg
    @Jaden-up3bg Před 3 lety

    What a great upgrade idea!! Noted

  • @dustinabbatoye1176
    @dustinabbatoye1176 Před 5 lety

    Mine just broke as well, a rock fell in front of my car while driving through a canyon a destroyed my diff. I removed the diff and was able to weld and reinforce the whole thing, I just got it back in yesterday and seems to be working great.

  • @quincyrocker5121
    @quincyrocker5121 Před 5 lety

    Holy shiiiiii a new vid. Hewl yeahhhh boooooooy. And I've been tryna learn about this too

  • @realweston
    @realweston Před 5 lety +2

    “I need to look good for my fan.” @15:48 🤣 singular, only one fan? Lol

  • @ryanlocher4177
    @ryanlocher4177 Před 5 lety +9

    For a second i thought you were gonna clean your wheels😂

  • @realweston
    @realweston Před 5 lety

    Do it for me again by hand big boy 😘 lol ❤️❤️❤️ loved the video. Good to see you again! 🙏

  • @SmukKully
    @SmukKully Před 5 lety

    Will be doing this when I break mine 👌🏼

  • @jannispfrommer4413
    @jannispfrommer4413 Před rokem

    Great Video. Would have been nice to know the difference in weight between the two Carriers though.

  • @couvboiz6712
    @couvboiz6712 Před 5 lety

    Hey Greg how come you’ve never ran and Frame rail guards? It’d be cool to see you rock one. Thanks for today’s upload

  • @TheJohnb35711
    @TheJohnb35711 Před 5 lety +27

    Got me thinking an FC RX7 would be a great new project on the car passion channel...

    • @Nasonix2
      @Nasonix2 Před 5 lety +3

      yes but i care about seeing him do more work on the main miata especially after the new drivetrain swap lol

    • @qers
      @qers Před 5 lety

      I want to see him swap in a BP engine.

    • @TheJohnb35711
      @TheJohnb35711 Před 5 lety

      @@Nasonix2 more work? This thing is a masterpiece.

  • @codllc
    @codllc Před 5 lety +1

    The S4 N/A RX7 can have the clutch type diff. The S5 came with a viscous or open diff.

  • @drmoss_ca
    @drmoss_ca Před 5 lety +5

    I get face ache driving my NA - the stupid wide grin that lasts for as long as the trip.

  • @derakbell8143
    @derakbell8143 Před 5 lety

    Glad to see you are wearing gloves

  • @VinnyVentures
    @VinnyVentures Před rokem

    I got the Torsen 3.9 I think. Super pumped.

  • @mgamma5001
    @mgamma5001 Před 5 lety +1

    Hey G do you know if all FC RX7 diffs will work... Turbo any stronger than the the NA FC. BTW nice work and love the pointers on the seals as mine are about to get replaced.

    • @TheCarPassionChannel
      @TheCarPassionChannel  Před 5 lety

      Turbo FC diff is way stronger but can't be used with the PPF without modifications

  • @xpogosam9690
    @xpogosam9690 Před 5 lety

    14:55 your rear sway bar end link is being held on by the will of the car gods alone

  • @donotforgetthis2
    @donotforgetthis2 Před 5 lety

    So glad I kept the carrier for my rx7 2 way 😅

  • @jp2246
    @jp2246 Před 5 lety

    Awesome

  • @dustinleebladesmith9135
    @dustinleebladesmith9135 Před 5 lety +1

    I'll buy your old diff when you get your Getrag setup!

  • @bakamotorworks505
    @bakamotorworks505 Před 5 lety +1

    Ryobi send this man some power tools!

  • @uh5291
    @uh5291 Před 8 měsíci

    I was wondering if your exhaust touched the kmiata PPF delete kit. I have that kit that Im gonna install and on a dry fit, my resonator interferes. Thanks.

  • @umoview
    @umoview Před 5 lety

    Thanks Creg!

  • @BogdanBershadsky
    @BogdanBershadsky Před 4 lety

    Thanks for your video! Will this mod fit to Mazda mx 5 NB SE 1.8?

  • @user-rw2se8oj5l
    @user-rw2se8oj5l Před 5 hodinami

    Very helpful

  • @owlytv
    @owlytv Před 3 lety

    Hi just wondering where you got the ppf delete kit from? Has it held up well? Lots more vibration noise?

  • @JonBlanton
    @JonBlanton Před 5 lety

    🔥🔥🔥

  • @ZeCalanga2391
    @ZeCalanga2391 Před 5 lety

    reliability -100 points, in stitches man :)

  • @dunaweezel
    @dunaweezel Před 3 lety

    Are the weld on braces worth installing. Mine already has stress cracks there from the stock motor

  • @Milwucky
    @Milwucky Před 5 lety

    goat

  • @Mr6Sinner
    @Mr6Sinner Před 5 lety +2

    6:20
    Ooo look, a penny!

  • @whitebear96
    @whitebear96 Před 5 lety

    Greg how come you dont have frame rails and butterfly brace on your miata after all this time? any reason for that?

  • @herrcrazyme8713
    @herrcrazyme8713 Před 5 lety

    oh yeah miata dad, give me those uploads

  • @Sertao2013
    @Sertao2013 Před 2 lety

    I have a 2003 miata and my diff broke in the place you show in the video . What year rx7 housing should I get so I can use the diff I have . Just to be clear I can use the diff I have and it will fit a rx7 housing right ? I noticed you said fc rx7 at 15:07 . what year does the fc rx7 carrier come out of ?

  • @carreiramediaproductions9104

    Thank you!!!!!!!!!!!!!!!! GOOD LOOKS

  • @WKZworks
    @WKZworks Před 5 lety

    Will an NA FC pumpkin bolt into the Miata in its entirety? I'd much rather have a Clutch type diff. Hell, I actually have a Turbo FC diff lying around. I may put that in there if it's similar enough.

  • @TheTerrydactor96
    @TheTerrydactor96 Před 4 lety

    Yo, massive thanks for this as I've just done it to mine.
    Need to ask, when bolting the carrier back onto the car, did you find that the outer rubber on the mounting plates don't press up against the arms?
    Is this okay?

    • @TheCarPassionChannel
      @TheCarPassionChannel  Před 4 lety +1

      They should still press up on the housing. The RX7 housing has the same thickness where the bushings go

  • @mauriciofiladelfo3027
    @mauriciofiladelfo3027 Před 4 měsíci

    Hey there, I've been watching your video for long time and a big fan. I have a few questions wondering you could answer cause I'm using cd009 transmission. 1st were you making over 450 to 500hp when you installed the rx7 diff if so do you think reinforcing the diff bracket would help? 2nd i saw you upgraded the rx7 diff to a Cadillac diff and it solved a lot of issues you were having. Do you think it was necessary cause you didn't explain if the rx7 diff was a temporally fix or if it broke as well? My opinion are staying with rx7, or ford 8.8, cadilic o 350z? The car will be making 500hp and wanted tour input. Thank you.

    • @mauriciofiladelfo3027
      @mauriciofiladelfo3027 Před 4 měsíci

      I found the information that i was looking for. Will be reinforcing the diff for now.

  • @epsimega1
    @epsimega1 Před 5 lety +2

    Kmiata's stock just dropped 7 points. That being said, I may weld mine on. Thanks man!

  • @elwindewitte
    @elwindewitte Před 5 lety

    Talking about the PPF, does that actually make a difference to either the regidity or the performance?

  • @Zadnak1
    @Zadnak1 Před 5 lety +15

    Do you think the K-Miata differential arm reinforcement plates made a difference in prolonging the life of the diff before it snapped?

    • @bakedandsteaked
      @bakedandsteaked Před 5 lety

      Surely it does

    • @thelonewanderer420
      @thelonewanderer420 Před 5 lety +28

      It held it together so he could get her home, that’s worth something

    • @Zadnak1
      @Zadnak1 Před 5 lety +2

      @@thelonewanderer420 good point

    • @Jamesfurtado128
      @Jamesfurtado128 Před 5 lety +5

      @@thelonewanderer420 to be fair thats worth what ever it costs. Saved on a flat bed and could probably drive lightly for a little while too

    • @mathiasmang848
      @mathiasmang848 Před 5 lety +4

      I don't think it would brake if you weld plates like those in there

  • @street_fighter_mx5
    @street_fighter_mx5 Před 2 lety

    One of the videos ever dobe

  • @brianjamal4140
    @brianjamal4140 Před 5 lety

    Dad of Miatas, how do you install Vlsd ears. I know one is longer than the other, but have no clue how to get them in

  • @Zadnak1
    @Zadnak1 Před 5 lety +8

    2 videos in a week?!? Keep up the awesome work!
    PS - Buy an NC!

    • @38tech
      @38tech Před 5 lety

      Never....na/nb for life....

  • @fredlecool1
    @fredlecool1 Před 5 lety

    Need a drag race between you and rudnick for sure it would be so fucking awesome

  • @suicidebunnyz
    @suicidebunnyz Před 5 lety +1

    What kind of exhaust clamps are those?

  • @albertoiturbesalazar9439

    Allways happy with yours videos,,, but my Miata is a 2008 MC ☹️☹️☹️.. and I like it a lot,,, because I feel it more stable and the looks.. but I looking for your's videos on the NC,,,, Sometime in the future..!! 🍷🍷🍷

    • @TheAdatto
      @TheAdatto Před 4 lety

      NC is the ugliest of all Miata's like they overinflated the bodywork.

  • @ALT3REDB3AST
    @ALT3REDB3AST Před 5 lety

    Daaaaaaaamn yo Miata THICC!!!

  • @henryliu8518
    @henryliu8518 Před 4 lety

    Whats different between the FC NA and turbo diff carrier and why only NA version fits?

  • @brysonshires9742
    @brysonshires9742 Před 5 lety

    Can we see what it takes to kill the rx7 diff? Before you install the getrag

  • @icoombs73
    @icoombs73 Před 5 lety

    Chris Rudnick has a Pontiac Solstice differential. BMW transmission

    • @TheCarPassionChannel
      @TheCarPassionChannel  Před 5 lety

      The Solstace uses a Getrag diff. And he's got the Nissan trans attached to the SR20, not a BMW trans

  • @MrMeierRecordz
    @MrMeierRecordz Před 5 lety +3

    Is the spring in the diff seal important?
    Noticed that I forgot to put them back in, and it's all assembled now 😅

  • @henryliu8518
    @henryliu8518 Před 4 lety

    Do you know does RX8 torsen LSD fits into NB diff housing?

  • @Chris-nq6cm
    @Chris-nq6cm Před 5 lety

    I own a car thats like a miata, but not one
    but I still enjoyed the video

  • @TheBreakfastClb
    @TheBreakfastClb Před 5 lety +1

    On the bright side diffs are easier than transmissions lol

  • @JonnyJonDogg
    @JonnyJonDogg Před 5 lety

    great video, what tyres do you run?

  • @spencer2652
    @spencer2652 Před 5 lety

    Greg got so much traction from the Paco arms it broke his diff.

  • @bzmiatas
    @bzmiatas Před 5 lety

    Thanks Miata DAD!

  • @thefriendlyitalian
    @thefriendlyitalian Před 2 lety

    If I use the N/A FC clutch differential. Am I able to reuse my axles?

  • @Alexwaltman850
    @Alexwaltman850 Před 3 lety

    Did you use RX7 or Miata axle seals? Gonna be installing mine with a euro 3.63 Torsen rear end next weekend

  • @Shakshuka69
    @Shakshuka69 Před 5 lety

    Somebody outta make/sell a truss for the diff carrier on our cars. Works great on Jeep axle tubes stopping them from getting banana'd by 40" tires and locked diffs.

  • @Procharged32
    @Procharged32 Před 5 lety

    There's no give in those newer type bushings wouldn't help to not breaking.

  • @wrth
    @wrth Před 4 lety

    In the end it's a roadster weighing under a ton. I don't this Mazda thought some guys would be pulling a lot more horse than stock.

  • @hessler97
    @hessler97 Před 2 lety

    Hey Greg, when you unbolt the upper control arm, does that affect your alignment at all? I am doing an OSG 1.8 swap in my 1.6 and don't want to ruin my custom corner weighted alignment. Please let me know, thanks!

    • @TheCarPassionChannel
      @TheCarPassionChannel  Před 2 lety +1

      No the upper control arm has no adjustability in the front or rear. If you do have OEM style bushings, it's best to do the final tightening with the weight of the car on the suspension, so the bushings aren't preloaded.

    • @hessler97
      @hessler97 Před 2 lety

      @@TheCarPassionChannel thanks so much!! I thought so, just thought I’d ask the expert…aka Miata Dad!!

  • @Zadnak1
    @Zadnak1 Před 5 lety +6

    Greg, do you not have an 18v or 20v half inch impact wrench? If not, do you want one?

    • @zGenjin
      @zGenjin Před 5 lety +4

      Milwaukee M18 Fuel will be all you’ll ever need

    • @khawajadotd
      @khawajadotd Před 5 lety +1

      I imagine he could get one if he wanted. I'd bet grrg's strategy is to use hand tools to keep everything approachable for new mechanics who don't have "fancy tools"
      An impact isn't all that fancy nowadays, but noobs don't always know that

    • @natemorris535
      @natemorris535 Před 5 lety

      Gen RIP M18 Fuel is my favorite tool in my box