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View Full Version : Rear Wheel Bearings - Potential problems I might encounter!



minuteman048
04-06-2017, 12:02 PM
Got this post from another forum. Before I try this will probably have to have an honorable Saki toast and wear my Kamikaze headband:

I heard a hum from the rear of my 03 Miata ( 160K ). Decided to just change them both. Passenger side, not too bad, borrowed a puller and with some struggle, got the hub off the axle, had the new bearing pressed in and replaced the bushing at the top of the knuckle.
Drivers side, not so much. With puller, 15" breaker bar and 4' pipe, managed to actually bend the hub. Bought new hub. Took the whole axle out and off to friends garage with a 20 ton press, next the end of the axle split, ordered new axle, then we broke the 20 ton press!!!
Cut the old axle off and took what was left to a shop that does drive line repair and has huge equipment. He used heat and a 60 ton press which finally exploded the axle out of the hub. NOT FUN! Putting it all back together this morning. Next time I'll just turn the radio up!https://forum.miata.net/vb/images/smilies/action-smiley-034.gif

SmileyFace
04-07-2017, 09:20 AM
Got this post from another forum. Before I try this will probably have to have an honorable Saki toast and wear my Kamikaze headband:

I heard a hum from the rear of my 03 Miata ( 160K ). Decided to just change them both. Passenger side, not too bad, borrowed a puller and with some struggle, got the hub off the axle, had the new bearing pressed in and replaced the bushing at the top of the knuckle.
Drivers side, not so much. With puller, 15" breaker bar and 4' pipe, managed to actually bend the hub. Bought new hub. Took the whole axle out and off to friends garage with a 20 ton press, next the end of the axle split, ordered new axle, then we broke the 20 ton press!!!
Cut the old axle off and took what was left to a shop that does drive line repair and has huge equipment. He used heat and a 60 ton press which finally exploded the axle out of the hub. NOT FUN! Putting it all back together this morning. Next time I'll just turn the radio up!https://forum.miata.net/vb/images/smilies/action-smiley-034.gif

Just making sure that this is the quote and not your actual experience. If and when you do attempt this kind of repair I want to ge invited to the Saki ceremony and participate in the work.

minuteman048
04-09-2017, 08:44 PM
On the ride up to Miatapalooza I rode with the top up. That being said without the wind noise I could hear more of the sounds the car was making. As I have been suspecting over the last few years, I think my right rear wheel bearing is going. I know I have been talking about it for years, but the whirring noise is definetly there. Here's the good news:

The Supreme Commander Mrs. Minuteman has given the OK for me to purchase a set of rear wheel bearings, axle nuts, C-clips, and lower control arm bushings in just under two weeks. I will be doing both sides and this will bring me closer to getting a set of tires so I only have to do an alignment once. The car will be up on jacks for as long as it takes and I hope the previous scenario does not play out. I've been training for this job the last four years.

SmileyFace
04-10-2017, 09:33 PM
Don't forget I want to be of help, I suspect you will need at least two more hands.

minuteman048
04-10-2017, 09:46 PM
Weekend job. Will let you know when I'm ready.

Joe Morreale
04-11-2017, 09:23 AM
If you need a hand, just holler! I have a 5 lb. hammer for the light work.

Agent☣Orange
04-11-2017, 09:53 AM
I'd like to swing by if possible.

minuteman048
04-11-2017, 11:32 AM
Can't buy the parts till sometime late next week. Once I get them I will schedule a tech day.

whiprsnapr
04-11-2017, 04:52 PM
Let me know to, I'd love to watch. . . lol,






you guys know I can't sit still. . .

SmileyFace
04-11-2017, 10:44 PM
If you need a hand, just holler! I have a 5 lb. hammer for the light work.

MM doesn't allow 5 lb hammers in his work shop. They have a habit of attacking aluminum hoods.

Agent☣Orange
04-12-2017, 02:05 AM
I have a 1" ratchet drive.

minuteman048
04-12-2017, 07:00 AM
Covered, I have got a 3/4" drive set.

minuteman048
06-06-2017, 01:35 PM
Found a whole rear hub repair kit which includes hub, axle nut, c-clip, and wheel bearing for $29.79 at Rock Auto. A fraction of what the dealer wants for the parts even with the discount. The bearing was $63.00 each with the discount. Can get both sets for $60.00 plus shipping. What do you guys think about not going OEM?

http://www.rockauto.com/en/moreinfo.php?pk=4785 780&cc=1356229&jsn=368&jsn=368&jsn=368&jsn=368

SmileyFace
06-06-2017, 08:27 PM
Found a whole rear hub repair kit which includes hub, axle nut, c-clip, and wheel bearing for $29.79 at Rock Auto. A fraction of what the dealer wants for the parts even with the discount. The bearing was $63.00 each with the discount. Can get both sets for $60.00 plus shipping. What do you guys think about not going OEM?

http://www.rockauto.com/en/moreinfo.php?pk=4785 780&cc=1356229&jsn=368&jsn=368&jsn=368&jsn=368

If you are comfortable with a RA part I say go for it.

Jaysz28
06-07-2017, 06:27 AM
I am ok using non OEM stuff, but you are the one putting in the work and driving on them. It doesn't seem like a job that anyone would want to do twice.

In the end, you gotta balance your comfort level and your wallet level out.

minuteman048
06-07-2017, 10:20 AM
Checked out the manufacturer and they are not cheap Chinese parts. Made in the USA.

http://duragoparts.com/

http://duragoparts.com/products/hub-assemblies/

Jaysz28
06-07-2017, 01:40 PM
that would work for me!

minuteman048
06-07-2017, 08:37 PM
Ordered two of the following:

Hub Repair Kit (2) comes with hub, C-clip, bearing, & axle nut.
Hub Grease Seal (2)
Differential Axle Seal (2)

With shipping comes to $90.12. OEM with discount came well over $250.00.

Will be ordering the Delrin differential mount kit from Miata Roadster next:

http://www.miataroadster.co m/miataroadster/miataroadster-delrin-solid-differential-mounts-kits/mrdmkred/i-3755604.aspx

Then a set of Mazdaspeed lower control arm bushings. Once I get all the parts will do the whole job at once.

Jaysz28
06-07-2017, 08:58 PM
I like the way you think!

SmileyFace
06-08-2017, 02:00 PM
I'm ready to help.

minuteman048
06-08-2017, 02:18 PM
Got to at least purchase another $300.00 worth of parts first. The Delrin differential mounts and plates and 8 lower rear control arm bushings. If i taking that area apart might as well change out all the old stuff.

Agent☣Orange
06-12-2017, 01:05 AM
I'm ready to help.



Same.

minuteman048
06-13-2017, 07:14 PM
Got my rear hub kit and oil/grease seals today. Hope to pick up the axles from Jack this weekend.

2056

Will order these next month:

http://www.miataroadster.co m/miataroadster/miataroadster-delrin-solid-differential-mounts-kits/mrdmkred/i-3755604.aspx

Comes with painted lower plates.

whiprsnapr
06-13-2017, 08:55 PM
You will be happy they come with the plates. When I did mine it took quite a bit of time to get all that rubber off. Looks like the same bushings I have. I'm wondering if they actually get these plates, or make them like I did. Here is a pic of mine once I was done. Still holding up well.

2057

minuteman048
06-13-2017, 09:45 PM
Will let you know when I get them.

whiprsnapr
06-14-2017, 06:37 AM
Just read their website, looks like they do the work then powdercoat them.

minuteman048
06-14-2017, 08:27 AM
Here's a shot of the plates with the lower Delrin bushings installed. They do all the work and powder coat the plates.

2059

minuteman048
06-14-2017, 09:36 PM
Researched the Mazda Speed Competition control arm bushings and they sell between $74.00 and $84.00 a piece! That's insane! Don't want polyurethane which are cheaper. Guess it's going it's going to be OEM.

http://www.mossmiata.com/Shop/ViewProducts.aspx?Pl ateIndexID=80815

Agent☣Orange
06-14-2017, 11:29 PM
Let me know to, I'd love to watch. . . lol,

you guys know I can't sit still. . .
Great! See you at the next tech day!



MM doesn't allow 5 lb hammers in his work shop. They have a habit of attacking aluminum hoods.There ARE photos of said atrocity but they're classified national security.

Joe Morreale
06-15-2017, 01:25 PM
Check into the Megan bushings. That's what I used.

minuteman048
06-15-2017, 01:52 PM
Check into the Megan bushings. That's what I used.

Got it......thanks! Good deal! Stiffer than OEM at 25% lower cost than OEM. Don't remember you posting about these.

http://www.meganracing.com/products/product_detail.asp?p rodid=921&catid=96

http://www.meganracing.com/products/product_detail.asp?p rodid=922&catid=96

minuteman048
06-24-2017, 08:33 AM
Picked up my axles from Jack yesterday with only 30,000 miles on them. Just have to clean them up a bit. Next the differential bushings.

2066

SmileyFace
06-24-2017, 08:45 AM
Getting closer to installation day?

minuteman048
06-24-2017, 08:49 AM
Still a couple of $100.00 away. Still need differential and control arm bushings.

Agent☣Orange
06-24-2017, 12:22 PM
Are there Mazdaspeed or Mazda Racing versions of the diff mounts?

minuteman048
06-24-2017, 04:04 PM
Yes but I am buying the Delrin ones.

minuteman048
11-05-2017, 05:39 PM
Yes but I am buying the Delrin ones.

Delrin too stiff. I ordered the Mazda competition differential bushings instead which are 30% stiffer. Weather cooling off and I'm ready to go to work. Also ordered my stiffer lower rear control arm bushings. Hope to install them between Thanksgiving and Christmas.

Agent☣Orange
11-05-2017, 07:48 PM
A prudent decision. I also had a set of Delrin diff mounts but sold them because I realized I wanted a high-performance, streetable Miata, not a squeaky race car.

minuteman048
11-07-2017, 10:02 AM
Does anybody hate the words, "BACK ORDERED!" Mother__!@#$%&*! The tires I want, Back Ordered!!.......Orde red lower rear control arm bushings from Meghan Racing............Ba ck Ordered and cancelled my order! At least my differential bushings I ordered from Mazda Roadster I got a Pay Pal invoice from, but once he places the order they might be back ordered also. What the hell is going on?

http://www.meganracing.com/products/product_detail.asp?p rodid=921&catid=96

Hello Bernie,

Thank you for your interest in the Mazda Miata 90-05 Rear Lower Arm Bush (MRS-MZ-0721). Unfortunately, they are in back order and we don't have an exact ETA yet. We are sorry for the inconvenience this may have caused and you will receive a refund. It usually takes 5-8 business days to your bank or PayPal to credit the refund to your account, depending on their own process. We will notify you immediately once the next shipment arrives at our warehouse.

Shopping Mazda Roadster:

https://miataroadster.com/policies

Agent☣Orange
11-07-2017, 12:11 PM
I know that frustration. It really screws up plans, especially when we only have three months of tolerable weather for big projects. I’ve been replacing faucets here and even got a beautiful Kohler for the laundry room. I want to replace the sink too and I thought I could just down to Lowes and get it but unfortunately it’s backordered for several weeks.

minuteman048
11-07-2017, 01:17 PM
Ordered the differential bushings from Goodwin. Had them on sale for $99.00.

Joe Morreale
11-07-2017, 04:01 PM
What about this place? They might just be a drop shipper or they say they're in stock.



https://thmotorsports.com/i-786116.aspx?786116-Mazda-Miata&gclid=EAIaIQobChMI0t 3aiq2t1wIVjCOBCh2d6A ZbEAQYASABEgLTAfD_Bw E

minuteman048
11-07-2017, 08:21 PM
What about this place? They might just be a drop shipper or they say they're in stock.



https://thmotorsports.com/i-786116.aspx?786116-Mazda-Miata&gclid=EAIaIQobChMI0t 3aiq2t1wIVjCOBCh2d6A ZbEAQYASABEgLTAfD_Bw E

Thanks! $22.00 cheaper and free shipping!

minuteman048
11-12-2017, 06:13 PM
Got my Mazdaspeed differential mount bushings yesterday. One step closer to my rear suspension rebuild. Waiting for my lower control arm bushings. Even though I replaced my upper rear control arm bushings when I installed the adjustable upper rear control arms, they were stock. Since the lower will be stiffer units I want the uppers to match and since I will have the whole thing apart anyway, it will be the time to do it. Will order them after the lower ones come in to spread out the cost.

minuteman048
11-13-2017, 10:32 AM
Ordered a pair of lower differential mounts from Priority Mazda for $29.75 each. Cheapest I could find them. Under $9.00 for shipping.

https://www.prioritymazdapar ts.com/oem-parts/mazda-suspension-cross-member-stop-na0128880c/?c=aT01NDI2Mzc1NSZyP WxheWVyXzE1

minuteman048
11-17-2017, 09:14 PM
Ordered a pair of lower differential mounts from Priority Mazda for $29.75 each. Cheapest I could find them. Under $9.00 for shipping.

https://www.prioritymazdapar ts.com/oem-parts/mazda-suspension-cross-member-stop-na0128880c/?c=aT01NDI2Mzc1NSZyP WxheWVyXzE1


Arrived today. One step closer to this job. Still waiting for my lower control arm bushings.

minuteman048
11-20-2017, 09:14 PM
Lower control arm bushings arrived today. One step closer to my rear suspension/drive train overhaul. After doing the double hoop roll bar, this project looks to be a piece of cake. Still have to order the upper rear control arm bushings.

Agent☣Orange
11-21-2017, 01:37 PM
A little break is definitely in order.

minuteman048
11-21-2017, 09:36 PM
Ordered axle nuts today.

minuteman048
11-27-2017, 02:32 PM
Took advantage of Cyber Monday and ordered the last item I needed to begin my rear suspension and drive train overhaul. Ordered the 6 rear upper control arms from TH Motorsports. Although I replaced those when I installed my adjustable rear control arms a few years ago, they were stock. When I am done they will be all competition bushings. I may not have the fastest MX5 in the club, but I am shooting for the best handling one. Over the last couple of weeks I spent more than I wanted to and Mrs. Minuteman is going to be pissed. To appease the CFO I will have to get her another piece of furniture. Just shoot me now.

PS They say Miatas are cheap to maintain. Could you imagine if it was a Beamer (BMW)?

Agent☣Orange
11-28-2017, 11:30 AM
I got a nice DeWalt bit set super cheap and a second Werner platform..

minuteman048
12-10-2017, 04:00 PM
Almost there. Still waiting for upper control arm bushings coming Wednesday. Went over the parts diagrams to see what I missed and ordered two retaining snap rings for the rear wheel bearings from Priority Mazda. Also need to pick up some rear differential oil and then I will be ready. Last day of work before winter break is Friday so I will be starting tear down next week.

Agent☣Orange
12-10-2017, 10:39 PM
Been getting some of my parts in too: an electronic boost controller for my mufflers and new axle nuts for when I install new wheel studs. Existing axle nuts are torque-to-yield and have to be thrown away rather than reused. That’s why I need your heavy duty torque wrench.

minuteman048
12-11-2017, 06:21 AM
Been getting some of my parts in too: an electronic boost controller for my mufflers and new axle nuts for when I install new wheel studs. Existing axle nuts are torque-to-yield and have to be thrown away rather than reused. Thatís why I need your heavy duty torque wrench.

Available to any club member.

minuteman048
12-17-2017, 09:54 PM
I've been reading everything I can about this project. How many of you guys knew about PPF alignment? Check the factory service manual diagrams. Something to think about if replacing the driveshaft with a 949 Racing Driveshaft. It has a bigger yoke that could hit the PPF.

http://949racing.com/Miata-Driveshaft.aspx

https://forum.miata.net/vb/showthread.php?t=351 758

Never knew it was adjustable.

Agent☣Orange
12-17-2017, 10:25 PM
I knew when Tristan broke his a few years ago.

Joe Morreale
12-18-2017, 11:23 AM
I know about ppf alignment from the 2 clutch jobs on my car. It's not that critical. The main thing you don't want is a perfect straight line from the crank to the pinion. U joints won't work, they bind up. I put everything together, loose and push the snout of the diff to where it looks and feels right. I measured after doing that and was within specs. I took a little extra math to figure specs because of the FM frame rails, just subtract an eighth or so.

949 has a good reputation for it's parts I'm sure the driveshaft would fit. But many people with "extra" horsepower use the factory ones for 100k. When the "U" joints wear out a brand new Doorman driveshaft is about $230. Doorman shaft has replaceable "U" joints.

minuteman048
12-18-2017, 07:40 PM
Good point. Lots of good stuff here. The 949 Racing one is $269.00 which I find also reasonable.

When I drop my differential I read that if I pull the two back bolts and all but the furthest forward bolt I can swing it two the side for clearance.

When I start my project I will start a new thread.

minuteman048
12-18-2017, 08:03 PM
Purchased the Royal Purple 75W-90 differential oil and some molybdenum grease as well as a bottle pump to get the oil in the differential today. Also received my C- Clips for the rear wheel bearings. Been doing last minute ordering for items I missed. Ordered the clips that go on the differential end of the axle shafts yesterday.

I was going to do the differential bushings first but decided I will do the wheel bearings and control arm bushings first. By then I will be into it enough to drop the exhaust and disconnect the PPF to drop the differential.

minuteman048
12-19-2017, 05:16 PM
OK, this will be last post on this thread and I am starting a new one. I have begun the overhaul and everthing will be posted there.