Q50 Rear Diff Bushing INSTALLATION | The New Diff Bushing from Z1 Motorsports!

The Q50 gets the new Rear Diff Bushing from Z1 Motorsports. Although a bit labor-intensive, with some mechanical aptitude and some patience, I think you can handle this project, but please use this video as a guide only as I am not a professional mechanic. Take a look at the Z1 website for further tips and tool list. Full review series to follow shortly! Stay tuned.
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[@mstchiefa7892]

Just watched the entire vid, that was painful but worth it. Good job showing everything clearly , tips and tricks also helpful.

[@SpeedCultureStudios]

It was a lot of work but doable and definitely worth it!

[@Driftking305forlife]

Congratulations can’t wait for the track video

[@matthewpalm7484]

If I had a suggestion for this, I would definitely say it wouldn't hurt to invest in an oscillating tool to cut out the rubber section of the bushing. It would probably cut through like butter and be very easily controllable. Very nice job documenting this job!

[@SpeedCultureStudios]

It might be worth a shot. I have one, but the blade is too wide and flat. If there are more narrow attachments, that might work--as long as it cuts the rubber and doesn't melt it. The chisel actually worked very well. I would also say that a small air saw for cutting the metal sleeve might be better than a reciprocating saw too.

[@matthewpalm7484]

@@SpeedCultureStudios The melting is a solid point, dealing with such a soft rubber.. there are very narrow attachments out there, but as long as the chisel works, no need to mess with a working system. I think a reciprocating saw is a pretty crude tool, so to me, I would probably just use a hacksaw to cut the relief strips, and then use a pry bar to bend the rest out of the way.. appreciate your response and quick action on creating this video!

[@SpeedCultureStudios]

@@matthewpalm7484 I didn't show it in the video, but I did use a little hacksaw as well. Takes a bit more elbow grease, but you can definitely control it better. I'd like to see someone use the oscillating tool though. Anything to make the job a bit easier and quicker would be great to know about!

[@jimcsjr]

@@SpeedCultureStudios I used a M18HackZall with a medium metal blade. Worked well, but have to definitely take your time to not nick the stamped subframe.

[@SpeedCultureStudios]

@ yeah exactly!

[@tristanoliver2911]

Looking forward to pairing this with my manual turbo q50

[@SpeedCultureStudios]

Need it!

[@trereese77]

Cant wait for the video! Got the popcorn ready!!!

[@TractionConcepts]

:=)

[@neworlns89]

Looked tough man but thanks for all the work you do bringing consistent content to or beloved platform . 💪🏿

[@SpeedCultureStudios]

It certainly was not easy! Worth it in the end though I think. The car feels good, but hopefully the video will give people the motivation to take on the project that they may have been hesitant to try just because lack of content or guidance.

[@willhawkins284]

Awesome video Jordan! Diff fluids Clean! Lookin good love to see these being done in the garage.

[@SpeedCultureStudios]

Thanks buddy!

[@mattg3829]

When you got that center piece and sleeve out I felt your relief.. 😂 great job man!

[@SpeedCultureStudios]

Such a good feeling 😂

[@jimcsjr]

Saw your other post about slowing down on your channel content, and the BS you have to deal with on YT. Sorry to hear it. I want to thank you for all of your videos thus far. After watching your "Simple" bushing replacement video, I ordered all of the parts from Z1 and enlisted my Nephew to help with the rear end re-build. My nephew and I knew it would be a hard job, so we alloted 3 days to complete. Not sure how you did it in 1. We referenced this video...A LOT...throughout the job, and do not think we would have been able to complete it with out your guidance. Z1's guide was just a supplement to your video. All said and done, it came out well, and the car performs nicely. Thank you for the work that it took to produce and explain this project, otherwise we would still be out there trying to figure out what to take off next, let alone where everything goes after replacing the bushings... Side note, as for hitting the two small front bushings 3-4 times, hammer and 32mm, and having them "POP Out..." We call BS Thanks for the channel, and look forward to watching more content.

[@SpeedCultureStudios]

Thanks for the kind words! I'm glad you've found some helpful content here. And you are right -- those bushing can be a real nightmare!

[@videomaniac108]

It's really nice to see all the performance stuff you're doing on these Nissans. I have a 370Z, and so much of what you do on the Qs and Gs is applicable to mine. I had the Whiteline poly diff bushing set installed on my Z by a good shop in San Jose, CA and the improvement in the feel of the rear end was noticeable; my shifting also got better. My next project will be the slotted Akebono two-piece aluminum hat brakes for the Z, for an even greater reduction in unsprung mass. BTW: My last duty station when I got out of the Army in 1970 was at Ft Jackson, just outside Columbia. I used to like going to the town and going on long walks, to see some of the interesting historic sights.

[@SpeedCultureStudios]

The z is a great platform and you’ll be pleased with that brake upgrade! Thanks for checking in!!

[@aiexbadboy]

this is such a brave install, thanks for sharing

[@SpeedCultureStudios]

Thanks for taking a look!

[@That203Guy1984]

Fam out here doing Gods work. And we all say Amen

[@SpeedCultureStudios]

lol thanks man

[@acm_1028]

I can't wait to do this myself. I think I'll try using an air hammer very carefully.

[@ChevyRobSCV]

This is why I paid an extra $200 to have my rear differential bushing replaced on my G37 6 months ago when I had my exhaust installed! Used the Z1 silicone bushing. I don't have the patience to do that shit myself. I leave it to the pro's! 😁 I admire your skill and tenacity though! Props to ya!.

[@SpeedCultureStudios]

If it wasn’t for My KZbin channel, I wouldn’t have done it either 😂

[@ChevyRobSCV]

@@SpeedCultureStudios I think you're so awesome. I look forward to your videos. I have a 2013 G37S with Stillen Intake (I know you're not into aftermarket intakes 🤣) Fast Intentions Exhaust and ECUTEK tune. It's such a fun car. Not the fastest car in the world but it holds its own. 🙂

[@SpeedCultureStudios]

@@ChevyRobSCV I appreciate that man. The Gs like intakes more than the Q so you’re good 😂

[@lilypark8735]

Wow I like this guy. Brand new respect. Thanks for great video.

[@SpeedCultureStudios]

Thank you!!

[@raymcintire6296]

Your language was alot tamer than I would have used! Good job!👍🏻👍🏻😁

[@SpeedCultureStudios]

I cut a lot out haha

[@raymcintire6296]

@@SpeedCultureStudios 😂

[@Loki-Grandmaster]

Definitely looks like it's worth doing, subframe collars, and diff brace while doing this.

[@SpeedCultureStudios]

Yep good idea to do it all at once! I already had bushing collars installed. They are a good upgrade on their own actually!

[@NG-VQ37VHR]

I just did this on a '13 g37 sedan a day ago. Holy crap was it a nightmare. You have almost no access in the rear because of the truck's floor. It comes down much lower than on the Q50. Just enough a sneak a ratchet in. If you have access to a lift, I think the job would be much easier. But if you're gonna be on your back, anyone thinking about doing it had better be prepared for the undertaking. It's all super easy until everything is out and it's time to remove the rear bushing. I spent a half day just trying to press the bushing out with the z1 tool, 2 clicks of the ratchet at a time due to clearance issues. All that said, the car feels so freaking good now under hard acceleration and normal driving. I'm not sure I'd do the job again though.

[@SpeedCultureStudios]

Great insight! and I agree totally! It's a nightmare, but makes a huge difference!

[@fredrickcontreras5657]

Great vid good job with the camera shoots and all the close ups getting ready to tackle it thanks for the vid really helpfull

[@SpeedCultureStudios]

Glad you liked it. Tried to show everything as best I could!

[@BA99253]

Ready for this one.

[@jonathancastaneda5438]

Props to you for doing it yourself, I leave all the headaches to my friend at his shop lol which looks like I'll have to do since I've noticed my bushing leaking as well. Hopefully the labor cost isn't too bad

[@SpeedCultureStudios]

I’d leave it to a friend next time myself lol

[@OxBlitzkriegxO]

excellent install video. great angles and no nonsense format. youve come a long way in production, keep it up! i wont swap out a functioning oem part for this but if/when it fails, i absolutely will as its a superior product. now, if someone could only offer the same solution for the IRS bushings, that would be ideal. :)

[@SpeedCultureStudios]

Thanks a lot! Definitely Would not do this unless it’s required!!!

[@josediazasmr6014]

You are a great teacher 💯 🤝

[@SpeedCultureStudios]

Thanks!

[@louisferaca9290]

I guess I’ll just leave mine stock 😆

[@solicitutoob]

Dang! That was a project! Thanks for the video!

[@SpeedCultureStudios]

Wouldn’t have been so bad if it wasn’t 95 degrees…and I had a lift lol

[@Rick_B52]

I did the thr opposite with mine. The only bushing bad in mine was the sub frame one so I filled the opening were the original fluid filling was with quick set epoxy so I still have the rubber portion as "flex." I basically made a circular dam with a small hole in it big enough to allow my epoxy tip through it (like a straw on a cup lid) and filled that outer ring. Made a WORLD if difference, took 15 minutes, and about $6.00. Definitely not as good as a complete new bushing set but for those who don't wish to go through all of it, that does the job. Did it two years ago and it looks like the day I did it.

[@SpeedCultureStudios]

That’s what I did first. Kept it like that for about a year until this came out. It’s decent but night and day difference when you make this upgrade.

[@bae7hoven4775]

Great video. I have mine installed on my 17 Q50, but I'd took it to get it installed by a professional. It looked too much for me to handle. Cost a grip though to get installed. Nonetheless, along with the differential brace my vehicle handles like it has glue on the road. No more wheel hop. Looking forward to your reviews

[@SpeedCultureStudios]

It was definitely a tough install. Not hard as far as technical, but a lot of work and in a tight space!

[@MarioRamos1234]

How much they charge u

[@bae7hoven4775]

@@MarioRamos1234 nearly a band

[@kaefiveee]

@@bae7hoven4775 DAMN. looks like im buying a jack and tools lmaoo

[@crazyone1067]

My brother replaced mine on my FX37 RWD. Ride is harsher, but worth the trade-off.

[@spadds]

Well done - looked like a real PIA. Looking forward to your review on performance / feel once you've got a few miles on it.

[@SpeedCultureStudios]

It was tough lol but hopefully it helps a lot of people going forward! Initial impression-short vid-going up Tuesday and will probably have a full review in the coming weeks!

[@ashton9542]

You should look into poly motor mounts and a poly transmission mount. Definitely makes you feel the car more without it being too harsh for noise. Most definitely the transmission mount it has made the most noticeable difference in driving the car. Night and day 😁

[@SpeedCultureStudios]

No trans mount out there for the 3.7 as far as I know and I will definitely go with the motor mounts if/when I need them!

[@ashton9542]

@@SpeedCultureStudios Yeah there is for the 3.7 lol I have one on my 14 Q50. Torque solutions it's basically same as the G37

[@SpeedCultureStudios]

@@ashton9542 That's what I'm saying. They don't offer a Q50 3.7 specific mount. I generally don't like crossing parts over unless we know they are interchangeable. No G37 mount or Q50 3.0t mount says "also works for Q50 3.7." You're the first that I've seen say the G37 mount works on the Q. Mounting points and everything lined up? No issues?

[@ashton9542]

@@SpeedCultureStudios So the cross brace the mount bolts to, you go up a few sizes on the hole so some drilling is required but it's into aluminum so it's easy. But yes the holes line up perfectly just needs to be a few sizes bigger on the cross brace from factory. Easy peasy took like 15 minutes to install. Worth the upgrade for sure.

[@SpeedCultureStudios]

@@ashton9542 nice. Don’t mind a little customization

[@Chand_G.]

Appreciate the diy!

[@malcombassaragh711]

Literally waiting on ur review to do mine 😂😂

[@SpeedCultureStudios]

I think a lot of people are lol. Be sure to let Z1 know you saw my video before ordering!!!

[@malcombassaragh711]

Definitely will i already ordered the kit n the collars too n dif brace

[@zincoob]

This video has been extremely helpful in my install so far, so thank you! But I'm having a bit of trouble trying to get the rear sleeve in though. I've tried greasing the frame where it mounts in and freezing the sleeve overnight but it's so stubborn and it just goes in lopsided. Do i need to just go the gym and hammer it in harder? Lol

[@SpeedCultureStudios]

It can be pretty tough.

[@Cooltempo1482]

Welp when I get mine all I can say is it’s not going to a shop so wish me luck

[@SpeedCultureStudios]

You can do it!

[@terrellchas]

I'm cracking tf up not for all the content in the world would you catch me doing this job🤣

[@SpeedCultureStudios]

lol, it was not fun, I can tell you that, but the upgrade itself is worth it.

[@AffinityAtl]

My '16 RS AWD started behaving rather consistently inconsistent, seem to be losing power with no DTCs, or background chassis control codes, abs etc. Than tonight I'm accelerating through a turn and the rear axle literally felt like it was coming loose from the chassis. Of course I'm counter steering, jerking the wheel, for no reason, I'll add. My pride and joy sure enough needs the rear differential bushing. She's only got a little over 110k miles on her, all four of my DDS struts/shocks are leaking and toast... Having come from the VQ platform to the VR is definitely night to day. I should have prepared for the DDS failures months ago, and no I'm not going coilovers,i actually like the handling characteristics the Monroe DDS struts/shocks give the chassis. I'll be ordering the Z1 bushing prolly tomorrow, I'm dreading the install. But so far in the five infiniti's I've owned, I've never taken any of them to a shop except for wheels, tires, and alignments. Thanks for the video! Also will a 3" hole saw be big enough diameter to remove the rubber insert?

[@SpeedCultureStudios]

You can handle it! A hole saw is a good idea. Even just getting the bulk of it out will give you room to cut that metal sleeve.

[@chadkiesz4960]

Do you suggest putting the Z1 rear diff brace on after installing the Z1 rear diff bushing kit? Or the subframe bushing collars? I have a failed rear diff bushing on my 18’ Q50 RS, getting the bushing kit professional installed here soon. Thanks! Great videos 👍🏻

[@SpeedCultureStudios]

The diff bushing kit will make a huge difference in its own. The collars are a big upgrade too. The brace wouldn’t be as necessary after the bushing kit, but will still add some additional rigidity if you’re looking for it!

[@ericaqing6556]

Would you recommend changing the other 4 rear bushings when changing the differential bushing?

[@SpeedCultureStudios]

It couldn’t hurt-there are only 2 others-but I I haven’t seen any for the Q50 specifically. Although I have seen someone else use g37 bushings for them

[@ericaqing6556]

I have a 2015 q50 base model. Can you drop the links for each part that you replaced in this video and quantity amount because I did see on Z1 that the rear differential upper stopper says sold individually and the rear subframe upper bushing doesn't say how many to get but I'm assuming 4 based on the diaphragm being shown because those are also sold individually. @@SpeedCultureStudios

[@lilbot3807]

So did you do a drain and fill for the rear diff fluid for the process of swapping out the bushing

[@SpeedCultureStudios]

Yes. 4:57

[@accinosmith4362]

Hey what were the signs that suggested that this needed to be changed?

[@SpeedCultureStudios]

Mostly just black liquid on the diff cover and possibly on your exhaust. If it is really worn out and bad you might get some wheel hop or clunking noise when stopping. I didn’t experience any of these things other than the black fluid leaking.

[@accinosmith4362]

@@SpeedCultureStudios ok thanks much, Im seeing the liquid but and getting excessive jerks when stopping.

[@SpeedCultureStudios]

@@accinosmith4362 I would say it has failed

[@kings1048]

Hello what are the symptoms of bad rear diff bushings?

[@SpeedCultureStudios]

Check out my other diff bushing videos. Clunking, vibration, leaking bushing fluid, wheel hop

[@tylerlusic4497]

Do the Qs have a washer above the stock front diff bushing ears? And if so did u reuse it? I have a G and am not sure what I did wrong but got more NVH than I’d think is normal for a poly bushing

[@SpeedCultureStudios]

They do have a factory washer but no reused with the new bushings. Bottom washer only.

[@Alexander-vb7ov]

How much NVH did this mod introduce into the cabin? Also, my Q50 is low mileage. If I already have the diff brace installed and the OEM bushings are in good shape this isn't really required. Any feedback would be appreciated.

[@SpeedCultureStudios]

0 nvh. I could fell the diff brace more. If your oem bushing is not failed, then I wouldn’t worry about doing this yet. The brace is a good support piece if your bushing is still good.

good job. Do you know what DIFFERENTIAL BUSHING i can use for my 2009 fx35 rwd suv? AND are in the ORLANDO area, or do you know of a good mechanic in this area? thnx.

[@kmc4747]

Love the content

[@SpeedCultureStudios]

Thanks a lot!!

[@askchrishetrades]

❤hat does the bushing do??

[@SpeedCultureStudios]

Well in most cases it replaces the failed bushing you likely have now. But it’s meant to hold your rear diff firmly in place so you don’t get a bunch of wheel hop and clunking from your rear end. I have a more detailed explanation in the unboxing video as well as the review video that came after this one.

[@Azordazor]

Would it being easier just to drop hole rear assembly down?

[@SpeedCultureStudios]

You could pull the whole subframe down-it would at least give you room to work on removing the bushing

[@LuisC202]

Does the big urethane Bushing give you squeaks and harsh noises. I miss your q50 videos 😩

[@SpeedCultureStudios]

No it was nice. Check out the review. I have like 400 q50 vids. You seen them all? 😂

[@flysociety9806]

I 👀 the rear brace was it sold separately?

[@SpeedCultureStudios]

Yes, I bought it a few months back. You can see the review vid on my channel. You can purchase it as part of a complete set now though!

[@toddhall7416]

Is there an official estimate of the hours for this project? I'm also very curious about the feel now. Since the old bushings were liquid filled and these urethane bushings look more stout I'm wondering if the feeling is more harsh after the install? I'm keeping my 3.7 mostly stock and wanting to keep the luxury feel.

[@SpeedCultureStudios]

I don’t know of an official hour estimate, but with all the right tools handy, I’d say 6-8 hours.

[@toddhall7416]

@@SpeedCultureStudios Thank you.

[@AMWHits]

Many have complained about noise and some harshness espcially from the rear end and its worse if you an LSD installed as the stock oem liquid filled bushings help to absorb all that noise and harshness. Which is why I haven't done these mods myself.

[@yuthought-2450]

how long does this usually take to install ??

[@SpeedCultureStudios]

Probably 4 or 5 hours if you’re on the garage floor like this

[@andrik1862]

Will this fit the 2014? Website says 2017+

[@SpeedCultureStudios]

The website says Q50 / Q60 2017+ It’s a little confusing but it means ALL q50 and 2017+ Q60

[@Liam-randomstuff]

That real moment when the blade fell out of the handle and you threw it😂

[@SpeedCultureStudios]

😂

[@roystervi]

does this effect the Q60 as well?

[@SpeedCultureStudios]

Q60s are a little newer, so there probably have not been as many failing yet at this point, but I would imagine the rear subframe is the same so would expect the issue to pop up eventually.

[@danielespinosa7199]

I cant find the torque specs for the two bolts for the 2 bushings on the back

[@SpeedCultureStudios]

Should be on z1s instructions

[@danielespinosa7199]

@SpeedCultureStudios i found it. Thanks! That was a true challenge but worth it.

[@clos432]

having trouble getting the bushing off , it’s seized in there . any tips? i’ve tried a handful of things

[@SpeedCultureStudios]

Lol it’s a bitch to get out. Have to make a bunch of relief cuts and try to chisel some wedges out

[@clos432]

@@SpeedCultureStudios hell yeah it is , tried it all man gonna just have to keep trying til it budges

[@SpeedCultureStudios]

@@clos432 yeah just a little at a time.

[@crazyone1067]

Apparently you didn't buy the removal tool from Z1.

[@SpeedCultureStudios]

There is no removal tool for the Q50. I have one from the Z. Z1 recommends NOT using it.

[@PeterObi]

This would be so much easier with an air hammer lol

[@SpeedCultureStudios]

Yes it would. I think I commented a while back that I don’t know why I didn’t even think about-I have one in the garage 😂

[@tonymotanajr]

I think you are begging for the valve body to bust, just so you can replace it, lol

[@SpeedCultureStudios]

😂 I would just do the vr30 trans

[@tonymotanajr]

Cause if you keep launching her, it will explode

[@SpeedCultureStudios]

@@tonymotanajr that’s not really how it works 😂

[@rogeliomartinez7847]

Lol the fact the us men love to stress over cars is fucking awesome 😎why not get an air hammer and go in?

[@SpeedCultureStudios]

I have one and never even thought to use it 😂

[@supradoom]

Going to be fun :)

[@supradoom]

Here is what happened to the ARP bolt from the Z1 tool on my install lol. i.imgur.com/EwOqApR.jpg