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| 1988 Fiero rear wheel bearing upgrade for durability (Page 5/6) |
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Steven Snyder
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MAR 30, 02:12 PM
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I installed my modified knuckles and hubs over the weekend.
Modified knuckle and axle spacer installed:
I had to modify the axle spacers because the fillets on the axles on my car were larger than the fillet on the axle I used as a template. I'll update the drawing when I get a chance, but make sure you confirm fitment by checking for a gap between the spacer and spindle. The gap will be only a thou or two, so use a light to inspect. Enlarge the chamfer if needed.
J-body hub bearing installed (with ARP 100-7708 studs):
I used a new axle nut and axle nut washer from a J-body (not shown). I'm not sure if they're the same as the Fiero parts.
There are three torque specs listed for these hubs, despite the hubs being the same for all years:
1984-1997: 184 ft-lbs (260 N*m)
1998-2001: 144 ft-lbs (195 N*m)
2002-2003: 148 ft-lbs (200 N*m)
from: http://www.speedwayautopart...m/Torque%20Specs.pdf
I do not know the reason for the different torque specs. I used 184 ft-lbs.[This message has been edited by Steven Snyder (edited 03-30-2015).]
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dobey
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MAY 20, 10:00 AM
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This is is still in the prototype stages, but hopefully if it works well under the stress loads of wheel bearings on cars/trucks, there will be some available that would fit the Fiero, at some point.
http://www.popularmechanics...greaseless-bearings/
Just saw this today, and thought I'd share it here.
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Bridgetown
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FEB 07, 10:34 PM
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I was browsing the web and found that early wrx sti rear suspension is virtually the same as the 88 rear. What about using the wrx uprights to gain better bearings in the rear? I'm not sure what the wrx axel spline count is, but I'm sure you could mod the fiero axels to work. Other things that would need to be worked out are strut length, swaybar mount, and possibly modifying the trailing link mount. The lateral links look pretty close. Of coarse the bolt pattern would change, but could possibly redrill the hubs back to 5x100. The wheel offset may also change.
If I run across one in the junkyard I may grab it too see if this is feasible.
Here are some pics of the wrx stuff.
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Patrick
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FEB 08, 12:03 AM
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| quote | Originally posted by Bridgetown:
I was browsing the web and found that early wrx sti rear suspension is virtually the same as the 88 rear.
Of coarse the bolt pattern would change, but could possibly redrill the hubs back to 5x100.
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I believe the Subaru Impreza/WRX/STI wheel bolt patterns are the same as the Fiero... in which case that's a bonus![This message has been edited by Patrick (edited 02-08-2016).]
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Bridgetown
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FEB 08, 12:26 AM
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After further reading I have found that the wrx rear bearings are no better then the 88 fiero's. However, 2005 STI's use basically the same upright, but have an upgraded bearing. The WRX has 5x100 pattern hubs, the STI has 5x114.3 pattern.
Some discussion here:
http://forums.nasioc.com/fo...thread.php?t=1591652
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Patrick
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FEB 08, 12:46 AM
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| quote | Originally posted by Bridgetown:
... the STI has 5x114.3 pattern.
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That appears to apply only to 2007 and up.
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Bridgetown
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FEB 08, 01:00 AM
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I have also realized that the STI has a small drum brake inside the hat of the rotor and serves as the parking brake. This could be a problem to overcome. Perhaps the whole assembled could be eliminated by using the fiero calipers? [This message has been edited by Bridgetown (edited 02-08-2016).]
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Patrick
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FEB 08, 02:20 AM
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| quote | Originally posted by Bridgetown:
I have also realized that the STI has a small drum brake inside the hat of the rotor and serves as the parking brake. This could be a problem to overcome.
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Is the drum parking brake necessarily a bad thing?
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4thfiero
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FEB 08, 10:56 AM
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I dont know if im fully understanding this mod...basically u can install an F body hub onto the rear of the Fiero?? (What car is that off of and what year?)
also, (and there is a reason im asking this) with this mod, could one install a FRONT Fiero hub onto the rear of the Fiero? or no...
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Bridgetown
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FEB 08, 01:35 PM
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This thread is about installing J body (late 90's cavalier etc.) front bearings into the rear of 88 fieros to get a more durable bearing for racing.
I'm hijacking with talk of using modified Subaru STI uprights to again, get better bearings in the rear.
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