Did the 5-lug conversion, a few notes.

RustBucket

New Member
Jun 8, 2003
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Buford, GA
Well after finally gathering all the parts and pieces, I was able to convert my '91 Hatch to a 5-lug bolt pattern. I took the low rent way out (sorta) and did it using Ranger front rotors instead of swapping 5.0 Fox or SN95 parts. I purchased new axles instead of buying junkyard stuff just for peace of mind.

Here's what I discovered during the swap. Maybe it will help someone else contemplating the same swap.

Front Rotors:

The rotors work fine. They're 1/2" bigger in diameter, but it doesn't seem to be a problem. I'm going to look at some different brake pads and calipers to see if I can't take advantage of the extra rotor surface area. I'll post more when I know more.

All the homework I did regarding the bearings told me if you used all of the Mustang spec'd bearinges and races you'd be fine. Apparently that is only half true. While trying to install the Mustang inner race into the Ranger rotor I discovered it to be too big on the O.D. Not by much, but enough to keep you from driving it into the rotor. The Ranger race works but the Mustang bearing does not sit fully into the race. I checked to make sure the taper was the same and it is. It all went together fine and while I've only driven it about 20 miles so far, it seems to be good.

Rear Axle:

I'd read somewhere that there was a problem removing the center pin from the diff on 7.5's with 3.73 gears. It's true the pin won't come out since it hits the ring gear teeth, but its not an issue for removing the axles. The pin is notched to allow the axles to be pushed in and the c-clip removed. Once you do the driver's side axle, just rotate the pin 180 degrees so the notch favors the remaining axle and you're all set. I also used the lock bolt to hold the pin in place while I removed and installed the axles. Once the lock bolt is back out to allow the pin to move, just push the pin up where you need it and push the lock bolt back in place. The pin will rest on top of the bolt and free up a hand. Maybe you already know this. Oh well, at least there'll be one more post on it to show up in a search.


For the most part, the swap went well. I've got some clearance issues up front mainly due to the steamroller sized tires I picked up for it. 245/50-16's are a bit too wide for the front. I had to use Mr. Gasket 5/16" spacers to get them to clear the strut enough to drive it home. It took two of us 6hrs to complete the swap from the moment the jack and stands went under the car to when we pulled the jack and stands back out, this includes chasing parts (spacers) and tools(slide hammer for axle bearing removal) and eating lunch. Not bad if you ask me.

I'll post pics of my beater with its new shoes tomorrow when I get a chance.
 
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So you spent $120 on new axles (a part that rarely has anything wrong with it from the junkyard) but kept the dangerously ineffective 4-cyl front brakes? I'm questioning your wisdom here. Glad to hear it went smoothly for you anyway.

Brian
 
After removing the stock axles, and seeing the chatter marks on the axles where the bearings rode, I felt vindicated. While I'm not above buying junkyard parts, I always remember the first word. There's just some things that are better off new.

As for the brakes, I've been reading here and other boards about people complaining about the brakes on their 4cyl cars. I've yet to see the same results. However, I do take a little more interest in my brake system than merely changing the pads when they squeal. I keep my rear brakes adjusted, and any time I install new pads and rotors, I make sure I properly bed the pads with the rotor. I use the 30/30/30 method recommended by Bendix. My '91 stops just as good as any of the other vehicles in our fleet. The only vehicle that I've owned that stops better was my '93 Ranger. It to received the same brake maintenance and I swear if you merely thought about braking, the truck stopped. I drive this car to work and my wife drives it on occasion. If I felt it wasn't safe, I would pursue an alternative means to convert the front to 5-lug.

There's a few stereotypes that pop up around here from time to time regarding these cars. While they may be the mainstream opinion, there's always an exception to the rule.

thank you for your input.
From one Brian to another.
 
Hey man, good job on all your stuff. I got a few questions for you. I actually just picked up all the stuff for a front and back 5 lug conversion and front and back disk brakes. I got a entire rear end out of a 96 GT mustang 8.8". The front i got the 96 GT hubs, spindles, rotors and calipers, i guess thats everthign too. What iw as wondering is my friend told me the 96 GT front hub and spindles were a bit wider than the 94 and 95 ones. Would you happen to know how much wider they or if thats even true. This is all going on a 1993 LX hatchback 2.3L. Thanks for the help.
-AJ Newman
 
Thanks for the compliment.

According to the notes I took while researching the project, the 96 and later SN95 spindles set the front wheels out 5/16" more than the 94/95 spindles. With the SN95 to Fox conversion, there's a possibility of creating bumpsteer since the tie rod angle is much different than the factory setup. Kits to correct this are available, but I can't recall where. Hopefully someone else will jump in here and fill in the blanks or correct me where I'm wrong.

Good luck on your project.