Bearings - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


General Miata Chat A place to talk about anything Miata

Reply
 
 
 
LinkBack Thread Tools
Old 03-07-2016, 12:28 AM   #1
Junior Member
Thread Starter
 
Join Date: Nov 2014
Location: Ypsilanti, MI
Posts: 65
Total Cats: -2
Default Bearings

Hey Guys,

I have been reading a ton of Threads and posts about front bearings. My NA8 ONLY does +16 races (lemons racing). We haven't had a bearing failure yet, but from what I am reading it just a matter of time. We do repack our bearings between races (went a full 24 with Mobile 1 and no failures)

Here are some pictures of the Drivers side hub after 30 ish hours of racing (practice and race).
Bearings-wp_20160228_001.jpg
Bearings-wp_20160228_002.jpg
If you look really close there the grease is two colors. The really bright pink is the same color as fresh grease. The other color is leaking out of the bearing. It looks like it might be a little cooked but i'm still new to doing this.

I just bought some Schaeffer's 248 from advanced-autosports.com Mmmmm Schaeffers.... They are known for their motor oil and for having the highest content of Moly in their automotive lubricants by quite a bit and revered on "Bob is the Oil Guy". This is a really good quality for our little miata bearings.

End of informational section. My question is, has anyone had any experience with GSP Bearings? I found them on Amazon today, they are a decent price ($60) but what really caught my eye was the hub construction and just how different they looked when compared to the standard Timkin bearings.

Amazon.com: GSP 474155 Front Hub Assembly: Automotive Amazon.com: GSP 474155 Front Hub Assembly: Automotive

GSP Bearing
Bearings-51uf9bhngdl._sl1000_.jpg
Timkin
Bearings-295-13152_s__ra_p.jpg

It looks like beefier design?? I was thinking about getting a set opening them up and repacking with Schaeffer's and possibly replacing with the ceramic ball bearings. According to what I have read the high level of precision means that one ball wont receive higher loading then the other ***** and then blow up.

End game is to build a much beefier front bearing so I don't need to rebuild them between every race.
cj9694 is offline   Reply With Quote
Old 03-07-2016, 12:03 PM   #2
Senior Member
 
Join Date: Oct 2013
Location: NorthWest NJ
Posts: 1,062
Total Cats: 48
Default

Also remeber that lemons is limited to 240tw tires, waaaay less than most of the people seeing hub failures (they tend to be running true race/track tires and much higher cornering forces).
x_25 is offline   Reply With Quote
Old 03-07-2016, 03:08 PM   #3
Junior Member
Thread Starter
 
Join Date: Nov 2014
Location: Ypsilanti, MI
Posts: 65
Total Cats: -2
Default

Quote:
Originally Posted by x_25 View Post
Also remeber that lemons is limited to 240tw tires, waaaay less than most of the people seeing hub failures (they tend to be running true race/track tires and much higher cornering forces).
well its 200 but who's counting

The interesting part is the front still feel good after that last race but the drivers rear was lose as heck when I got it on the lift. Too bad there isn't a way to pack the rear bearing with better grease.

but any thoughts on those GSP bearings?
cj9694 is offline   Reply With Quote
Old 03-08-2016, 11:15 PM   #4
Elite Member
iTrader: (1)
 
Leafy's Avatar
 
Join Date: Jun 2012
Location: NH
Posts: 9,093
Total Cats: 90
Default

I repack the rear bearings, they come apart the same way as the front ones.

On the front hubs the two pictures you linked look like the same exact hub to me. These hubs are a crapshoot and there's 2-3 different styles of the casting/machining that exist and only 1 doesnt suck, and you can get any of the styles in any color box (timkin, detroit axle, gsp, etc, the only difference is the color of the box). $60 is super expensive though the detriot axle ones are like $20.
Leafy is offline   Reply With Quote
Old 03-09-2016, 12:45 AM   #5
Junior Member
Thread Starter
 
Join Date: Nov 2014
Location: Ypsilanti, MI
Posts: 65
Total Cats: -2
Default

Thanks for the tip! I didn't know the rear bearings were rebuildable. I ordered some Dura International bearings on Amazon and some Timkin bearings for the rear.

I can also report that the Schaeffer's 248 is the stickiest, tackiest, goopiest **** I have ever touched. It coated my gloves like nothing I have ever seen. It was like packing honey. Think Alien primordial ooze. If this stuff comes out of the bearing it will be some kind of adverse act of quantum physics. T-minus 46 days till race day!
cj9694 is offline   Reply With Quote
Old 03-09-2016, 09:42 AM   #6
SadFab CEO
iTrader: (3)
 
hi_im_sean's Avatar
 
Join Date: Sep 2012
Location: your mom's house phoenix, AZ
Posts: 3,904
Total Cats: 613
Default

I hardly got 1 season out of a dura international on 205 street tires...
hi_im_sean is offline   Reply With Quote
Old 03-09-2016, 10:25 AM   #7
Senior Member
 
Join Date: Oct 2013
Location: NorthWest NJ
Posts: 1,062
Total Cats: 48
Default

Quote:
Originally Posted by Leafy View Post
I repack the rear bearings, they come apart the same way as the front ones.

On the front hubs the two pictures you linked look like the same exact hub to me. These hubs are a crapshoot and there's 2-3 different styles of the casting/machining that exist and only 1 doesnt suck, and you can get any of the styles in any color box (timkin, detroit axle, gsp, etc, the only difference is the color of the box). $60 is super expensive though the detriot axle ones are like $20.
Are there any pictures around the difference between the good casting and the bad ones? I will need a new front hub soonish. One of the stockers has developed the tiniest amount of play. (140k miles and a crap ton of autocross the last few years, not bad.)
x_25 is offline   Reply With Quote
Old 03-09-2016, 10:27 AM   #8
Junior Member
Thread Starter
 
Join Date: Nov 2014
Location: Ypsilanti, MI
Posts: 65
Total Cats: -2
Default

Quote:
Originally Posted by hi_im_sean View Post
I hardly got 1 season out of a dura international on 205 street tires...
did you repack them with good synthetic grease? If yes, I will return and get some from Detroit Axle per what Leafy said.
cj9694 is offline   Reply With Quote
Old 03-09-2016, 10:44 AM   #9
Junior Member
Thread Starter
 
Join Date: Nov 2014
Location: Ypsilanti, MI
Posts: 65
Total Cats: -2
Default

Quote:
Originally Posted by x_25 View Post
Are there any pictures around the difference between the good casting and the bad ones? I will need a new front hub soonish. One of the stockers has developed the tiniest amount of play. (140k miles and a crap ton of autocross the last few years, not bad.)
If you have play, your bearing is toast. Don't wait to replace it. I have seen plenty of YouTube videos of what happens when a bearing seizes. It usually involves the wheel coming off

The Detroit Axle bearings have gone up in price :(
$42 on their website (I haven't found them elsewhere, link for cheaper?)

Get something new and follow the guide to repack with something good. I just used the Schaeffer's 248 and will report how that goes after our enduro in April. We went a full 24 on new and used bearings with Mobile 1 synthetic grease with no problems on the front. The rear did begin to loosen up at the end of the race but those had factory grease (that's going to change from here on out, THANKS LEAFY!)

Here is the link to the step by step guide.
https://www.miataturbo.net/suspensio...ont-hub-75372/

I hope this helps!
cj9694 is offline   Reply With Quote
Old 03-09-2016, 10:47 AM   #10
mkturbo.com
iTrader: (24)
 
shuiend's Avatar
 
Join Date: May 2006
Location: Charleston SC
Posts: 13,776
Total Cats: 1,106
Default

You can get the detroit axle bearings on eBay for a reasonable price. I think I paid $50-60 for 2 of them shipped to me. These were front hubs, not sure on pricing for rear.
shuiend is offline   Reply With Quote
Old 03-09-2016, 10:49 AM   #11
Junior Member
Thread Starter
 
Join Date: Nov 2014
Location: Ypsilanti, MI
Posts: 65
Total Cats: -2
Default

Thanks! I'll have a look. The bummer is, I live 10 minutes from their wear house lol
cj9694 is offline   Reply With Quote
Old 03-09-2016, 11:46 AM   #12
Senior Member
 
Join Date: Oct 2013
Location: NorthWest NJ
Posts: 1,062
Total Cats: 48
Default

Quote:
Originally Posted by cj9694 View Post
Thanks! I'll have a look. The bummer is, I live 10 minutes from their wear house lol
The ABS ones are cheaper. You can just knock the ring off apparently. Found them here.

Pair of 2 Front or Rear Driver and Passenger Wheel Hub and Bearing Assembly ABS | eBay
x_25 is offline   Reply With Quote
Old 03-09-2016, 01:27 PM   #13
SadFab CEO
iTrader: (3)
 
hi_im_sean's Avatar
 
Join Date: Sep 2012
Location: your mom's house phoenix, AZ
Posts: 3,904
Total Cats: 613
Default

Quote:
Originally Posted by cj9694 View Post
did you repack them with good synthetic grease? If yes, I will return and get some from Detroit Axle per what Leafy said.
I did not, just ran them the way they came.
hi_im_sean is offline   Reply With Quote
Old 03-09-2016, 02:11 PM   #14
Junior Member
Thread Starter
 
Join Date: Nov 2014
Location: Ypsilanti, MI
Posts: 65
Total Cats: -2
Default

Quote:
Originally Posted by x_25 View Post
The ABS ones are cheaper. You can just knock the ring off apparently. Found them here.

Pair of 2 Front or Rear Driver and Passenger Wheel Hub and Bearing Assembly ABS | eBay
I wondered about that. Thanks for the info
cj9694 is offline   Reply With Quote
Old 03-09-2016, 10:11 PM   #15
Elite Member
iTrader: (1)
 
Leafy's Avatar
 
Join Date: Jun 2012
Location: NH
Posts: 9,093
Total Cats: 90
Default

Quote:
Originally Posted by x_25 View Post
The ABS ones are cheaper. You can just knock the ring off apparently. Found them here.

Pair of 2 Front or Rear Driver and Passenger Wheel Hub and Bearing Assembly ABS | eBay
You dont even have to knock the ring off. Theres an old thread, I think Hustler started it that is like 9001 pages long and has everything you wanted to know about front hubs in it, and some ---- stuff you didnt.
Leafy is offline   Reply With Quote
Old 03-09-2016, 10:57 PM   #16
Junior Member
Thread Starter
 
Join Date: Nov 2014
Location: Ypsilanti, MI
Posts: 65
Total Cats: -2
Default

Quote:
Originally Posted by Leafy View Post
You dont even have to knock the ring off. Theres an old thread, I think Hustler started it that is like 9001 pages long and has everything you wanted to know about front hubs in it, and some ---- stuff you didnt.
Do you have a link?
cj9694 is offline   Reply With Quote
Old 03-10-2016, 10:18 AM   #17
Senior Member
 
Join Date: Oct 2013
Location: NorthWest NJ
Posts: 1,062
Total Cats: 48
Default

Quote:
Originally Posted by Leafy View Post
You dont even have to knock the ring off. Theres an old thread, I think Hustler started it that is like 9001 pages long and has everything you wanted to know about front hubs in it, and some ---- stuff you didnt.
Will have to dig that up later. I was figuring I wouldn't need to take them off, I just figured if I needed to, I could. I wouldn't have expected mazda to use a different upright casting for ABS and non ABS cars (that would be something GM would do though).
x_25 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
My (probably) misguided build thread. nick470 Build Threads 81 10-02-2017 02:09 PM
New guy here, miata owner from Belgium Junglist Meet and Greet 2 03-02-2016 08:38 AM
IAT sensor reading high (not heatsoaked) btabor MEGAsquirt 5 02-25-2016 08:44 AM
I'm dumb reading spark plugs. Fix it please. Nathan F General Miata Chat 6 02-15-2016 04:17 PM
Florida MSM Build Thread: 225whp and Counting JaxMSM Build Threads 8 02-11-2016 06:43 AM


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 06:33 AM.