Ordered an axle on rock auto and double checked it was for a manual. For some reason it has an ABS ring or speed sensor ring on it and it hits the knuckle. Should it not be hitting or did rock auto just send me the wrong part? Is there a way to take it off or is the axle completely wrong? Of course no parts stores have them and i don't want to have to wait until tuesday to get one. Its an 85 4 speed and 84 knuckle.
------------------ "America is all about speed, hot nasty bad-ass speed" - Eleanor Roosevelt
found a post about someone doing that a long time ago but the brass peice has a lip so it can't slide off. Used an angle grinder and chisel. Pretty soft metal. Thanks for the replies
It looks like after some more searching the 84 is the only year that can't fit this ring and I should have ordered one for an 84 not an 85
One of our club members received one with the ABS ring and it wouldn't fit his 86SE. He returned it to the parts dealer for the correct axel without the ring.
I know I am reviving an old post, but I am looking for a way to add a speed sensor to my 1988 GT. Does anyone know if these will fit on an 88? I see the option is still available on rock auto for the Fiero. If not, does anyone know of a wheel hub that would be a direct fit that includes a sensor?
I know this has already been responded to... but we dealt with this a couple of month ago. Same thing, had to just cut off the tone ring from the axle and it fits perfect.
Don't forget to install the grease fittings on the inside of the wheel hub too. They aren't critical, but it prevents water intrusion going to the wheel bearing, which... if not protected, will probably fail prematurely.
Todd, where is a grease fitting on the inside of the hub? I know there's a drain port in the bottom of the knuckle, but I've never seen any provision for a grease fitting. Are you referring to the grease seal that sits at the rear of the knuckle?
Todd, where is a grease fitting on the inside of the hub? I know there's a drain port in the bottom of the knuckle, but I've never seen any provision for a grease fitting. Are you referring to the grease seal that sits at the rear of the knuckle?
EDIT: I just re-read what you said, and what I said... sorry, I was distracted. Yeah... no grease fitting, I meant grease seal... and I realized I've just said all the stuff you already knew, haha... I didn't mean to call it a grease fitting. I apologize. I'll just leave this here below for anyone who did the dumb stuff I did and forgot to install one.
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If we're talking 84-87... yeah... I had no idea either, and didn't remember seeing one either when I removed the old hubs.
PMBrunelle mentioned it, and I was like, oh **** ... he's right.
I'll see if I can find a picture, but there's a really large one that goes around the larger mass of the axle... (around the smaller circumference from where the tone ring attaches). And of course, you have one at the front as well. You're even supposed to pack grease around both sides of the bearing to help seal it from water. A lot of people leave them out, but it's meant to prevent water intrusion which will prematurely cause the hub to fail.
Ok, not the best pictures... but here's what I took ... after I did it wrong, and then had to take everything back apart, order them, and have my daughter put them back again...
Again, it's not the end of the world if you didn't install one. The bearings aren't exactly sealed from the elements, and so you risk getting water and road grime in there. The seal on both sides is meant to ensure no water intrusion.
Here's a picture of it installed with the axle in... the steering knuckle hasn't been mated (yet) to the McPherson strut in this picture, so there's a gap... but it shows where it is, and where it mates to the axle.
There's also a rubber O-Ring that's supposed to go around the wheel hub too, which is also meant to help create the seal between the hub and the steering knuckle. And of course, you have a seal on the front too which is made up of the combination of the axle w/ grease, and the big washer that goes behind the nut.
[This message has been edited by 82-T/A [At Work] (edited 12-03-2024).]
No, i am seeing what it would take to use a DSG in my Fiero. It is a great transmission and can really hold its own in fast shifts and a decent amount of power. It does require wheel speed sensors. I am looking to see if there are ways to add. When I saw this post of the tone ring on the CV i figured I would ask. It would be even better if there were a hub that fits direct with a speed sensor in it. Preferably front hubs as the ECU company I am looking at using says that non drive wheels are the best source for the DSG TCU.
Originally posted by ChuckR: No, i am seeing what it would take to use a DSG in my Fiero. It is a great transmission and can really hold its own in fast shifts and a decent amount of power. It does require wheel speed sensors. I am looking to see if there are ways to add. When I saw this post of the tone ring on the CV i figured I would ask. It would be even better if there were a hub that fits direct with a speed sensor in it. Preferably front hubs as the ECU company I am looking at using says that non drive wheels are the best source for the DSG TCU.
You could machine the backside of the knuckle to clear the ABS ring on the CV housing.
I am exploring the same thing for the front so I can enable traction control. My short term solution is to use the bolts/nuts from my 2 piece front rotors and make a bracket to hold the sensor to pick them up.
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Originally posted by fieroguru: Also started pondering the front wheel speed sensor. Since I switched to 2 piece front rotors, the nuts on the backside should work as good trigger points. This will be 12 per rotation, 851 rotations per mile, 150 mph = 425 Hz switching rate. At 15 mph it will switch 42.5 times per second.
To mount a sensor to pickup the nuts, I am thinking a bracket like this one should work until my custom front knuckles and wheel bearings with ABS sensors are complete (1-2 years out).
That is a pretty cool idea. I too would prefer front sensor(s). I need at least one input to satisfy the TCU in the DSG, but more sensors would allow for more options. I take it since you are talking about eventual custom knuckles for an ABS hub that means there is not a hub with ABS that would fit the stock knuckle. Searching the forum was the first stop in my journey looking into this issue so I havent measured anything and was really hoping for a readily available solution LOL. It is never that simple. Thank you for the input.
The front of 84-87 doesn't even have a hub, the knuckle is a spindle, with bearings riding between it and the brake disc directly.
ChuckR is talking about an 88, which does have removable hub bearing assemblies.
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Originally posted by ChuckR: That is a pretty cool idea. I too would prefer front sensor(s). I need at least one input to satisfy the TCU in the DSG, but more sensors would allow for more options. I take it since you are talking about eventual custom knuckles for an ABS hub that means there is not a hub with ABS that would fit the stock knuckle. Searching the forum was the first stop in my journey looking into this issue so I havent measured anything and was really hoping for a readily available solution LOL. It is never that simple. Thank you for the input.
In the Fiero era, the use of reluctor wheels for various functions like ABS and crankshaft sensors were largely an afterthought and integrated where it was easy (like on the CV ends or in balancers) as a small design change. Eventually they were "designed into the components" for improved durability.
With the 88 front wheel bearing have an even smaller bore and bolt pattern to the knuckle than the rear. It will take a lot more machining to adapt another bearing, and the knuckle is quite compact w/o much excess metal to begin with. People have machined the rear 88 knuckle for the W-body bearings with integrated ABS sensors, but it was done more for using the W-body CV than anything else. Here is the thread, but the pictures are gone. https://www.fiero.nl/forum/Forum2/HTML/125016.html
In my case the custom knuckles are for larger, more durable/available bearings to support Traction control and ABS for 500+ whp.
ChuckR is talking about an 88, which does have removable hub bearing assemblies./QUOTE]
Ok, I had assumed it was regarding the original poster, which is an 85.
Sorry for Hijacking the thread, but it was a long unused one and i had questions about the tone ring.
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Originally posted by fieroguru:
In the Fiero era, the use of reluctor wheels for various functions like ABS and crankshaft sensors were largely an afterthought and integrated where it was easy (like on the CV ends or in balancers) as a small design change. Eventually they were "designed into the components" for improved durability.
With the 88 front wheel bearing have an even smaller bore and bolt pattern to the knuckle than the rear. It will take a lot more machining to adapt another bearing, and the knuckle is quite compact w/o much excess metal to begin with. People have machined the rear 88 knuckle for the W-body bearings with integrated ABS sensors, but it was done more for using the W-body CV than anything else. Here is the thread, but the pictures are gone. https://www.fiero.nl/forum/Forum2/HTML/125016.html
In my case the custom knuckles are for larger, more durable/available bearings to support Traction control and ABS for 500+ whp.
I am looking at possible end goals in this range. many years down the line. I want to eventually do a Drag and Drive and hoping to run max times without adding a cage. Since the rules are changing hard to hit, but I think now is 11 sec, since not a newer car that can do 10's. I would like to have the speed sensors up front too, but I have yet to decide my build. I keep getting creep in the project as I research. LOL. I joined 6 years ago with the aim of just updating with a cheap swap, had some life events put things on hold, now i am back at it, wanting a DSG with possibly the Audi 2.5 I5 or maybe just an LS on it. I finally found an ECU that will talk to the DSG. (I currently daily a 2012 VW GTI so i already have the donor car...)
