Technical Quick change rear with 9 inch carrier info

Hey guys , need a little help please . I picked up an old jones magnesium quick change , I really would like to set it up under my coupe for the street. I've read someplace , which I cant find again , about using a 9 inch carrier in the quick change. Any info or just a direction pointed in would be really appreciated. Thanks for any and all help in advance.

 

Search GearheadsQC on the forum, he has a thread going with all your answers.

 

Sorry, I couldn't take the time to respond before. Very simply, no 9" parts fit a Quickchange. Most of the late model stuff do use 31 spline axles which are interchangeable with Ford 31 spline.

The thread @Barrelnose pickup referred to is 'Quick Change Quickchange'.

Post pics of your Jones QC. The bells and rear cover can be a bit unique.

 

How rare is that bird....?

 

Drifter,
I was thinking it may have been a flat bottom Jones. Like this:


Anyway, I'm not sure that the side bells are Jones, but they could be. What I am sure of, is that they are on the wrong sides. The area between the fins on top are actually a pocket for additional gear lube. They should be on the bottom. Not sure if that rear cover is a Jones or not. Looks like a Frankland Supercover from the angle you posted.

That rear can be made to work very nicely in your coupe.
If you are looking for direction on where to start, remove the rear cover and drain any remaining gear lube.
I find it easiest to do by putting the whole assembly on jack stands and putting a drain pan under it.
Then remove the left side bell.
You can't hurt anything and it doesn't upset any settings. Word of caution: don't wedge a screwdriver between the bell and center.
Now you can remove the carrier with ring gear.

Take pictures and post them. We'll go from there.
Please show the rear cover from the back, too.

Bruce

 

Not too.

 

Hey doctor satan , thanks for the responce , I did pull it apart a little while ago , the bells are jones , they were still lose just bolted on rag tag. No carrier to speak of. But lower shaft is intact and pinion is intact. Yes it has a franklin cover on the back , wich I really dig. Lol stupid I know but still think it's cool. So I measured the thickness of the center without bells on it. 3 3/4 , tried to research a bit and man i got nothing. I really am not sure if it's worth my time and money to build, or just swap for a newer unit a d keep moving along with my project. Any input would be greatly appreciated. Thanks Mike

 

Doctor satan , this is what I have ,

 

Doctor satan , I just wanted to say thanks , for even getting involved in this lol truley I appreciate it.

 

looks like a direct Franklin copy-didn't see which axle snouts you have on those tubes,that could affect your decision money wise.You said there was no ring gear or carrier?GearheadsQCE will have everything you need

 

Oldtom69 , hey thanks for chiming in , I have both , bells is what I've been calling them . They are jones , 1 is in need of a bolt hole repair. But as far as I have seen that's it , also the housing in the rear , they used a bolt to long on the rear cover and it came through the magnesium. Honestly I was going to shave both sides to match. Such a small thing seems stupid to worry about making perfect. I just found a franklin carrier online , waiting for the guy to get back to me , after that just ring gear ( not sure what tooth ) are they a standard gear everyone uses ? And axle tube conversion for 9 inch axles . The rest of the parts I have , I think.

 

That is a Jones magnesium quick change, which shares most parts with Frankland, Winters, etc. Parts aren't too hard to find and it is not too hard to assemble. Going together, they look like this:



A street differential will look something like this. I like the worm gear type, but there are a few kinds floating around.



There are a bunch of threads on quick changes in the search and GearheadsQCE can hook you up with pretty much anything you need.

-Abone.

 

Flamedabone, thanks for the insight , looks great ! Right now I need to identify what exactly it is so I can locate parts , I believe it's a sprint diff. But that's all so far , not sure what else I do need to know when looking for parts. The worm type you mentioned earlier , can you explain please, thanks again

 

4:11 and 4:86 are the common ring and pinion ratios.Ring and pinion are actually just copys of 1939 to about 1952 3/4 ton Ford and others [Stude etc] If you wanted an open[non-posi] rear you could use a stock 3/4 ton carrier,but it give you an odd 12 spline axle spline.Locked spool is the most common ring gear carrier to find,but I wouldn't recommend it for the street!Flamedabone has the nice [$] setup and he has the non-floater axle ends on his tubes.Ebay can be your friend here,but beware!Again Gearheads can help with parts and walking you through the assembly

 

P.S.-your rear cover is what Franklin used to call the"super speedway" cover with the extra side pockets for more lube-a regular oval cover will fit depending on what look you want

 

Oldtom69
Thanks again , I appreciate it.

 

went to the library[bathroom]to check my speedway catalog the 4:11 ring and pinion is 8 tooth pinion and 33 tooth ring gear-the 4:86 is 7 tooth pinion and 34 tooth ring gear-should tell which gear you need

 

What Abone showed you is known a Gold Track. There were several manufacturers that made that style. I believe the only new ones now are Winters. They are offered on the auction site all the time.

Nothing to worry about as far as parts availability. What you have is a pretty basic 3/4 ton Quickchange. Unfortunately, if you don't have the ring gear that matches that pinion you will have to replace them as a matched set.
What you might want to do is take it completely apart and lay out all the pieces you have. I can tell you what is missing.
The bearings are generally replaced but it is amazing how many are still good after many years of use. That stuff was way over engineered.
If the axle tubes are not bent, you can cut them off and weld on late Ford housing ends. If they are bent you can get axle tubes with the housing ends already welded on.

To get the pinion out, heat the case to about 350 degrees and it should fall out. (have to unbolt the pinion retainer first) Don't do this in your kitchen with the wife's oven. That was what I did on my first QC and she's still mad 37 years later. A grill works for this.

 

There is a healthy supply of used quickchange parts on eBay, for things like a limited slip differential.

All else should be installed new. @GearheadsQCE can hook you up.

BTW, magnesium bead-blasts really nicely.

This one had thick rattle can black, over heavy oxide. Just mask off gasket and bearing surfaces well.

JUST A NOTE: This center section has been intentionally modified, in case you are wondering why the appearance is a little "off". This has been set up to run backwards.

 

Speaking of him, I do need to order parts soon.

 

I have my order pad ready

 

Thank you oldtom69

 

Gearheadsqce, thank you very much for chiming in , I'll do just what you said. Not in the kitchen lol both axle tubes are bent , I was planning on seeing if the typical 3 inch axle tubes from a 9 inch were the same and just use those with the big bearing ends , but honestly haven't got that far yet. Not very often I get into somthing that I've never touched or been around , really is a neat thing. Is there a part number or anything I should look for on the carrier ? I know I probably wont be able to swing a new one . So used is definatly going to be where I'll be. Really , thank you very much for your help.

 

Gimpyshotrods, thanks for getting into this lol , honestly I was going to media blast it today , using baking soda , same as I do carburators. Really wasnt sure how the magnesium was going to act , then my blaster took a shit and I moved on to another project. Lol but thank you for letting me know I wasnt going to make a mess out of my case ! Lmao I'll be living on e bay once I really get into this . Thank you very much , I do appreciate the help

 

I use the shop heater and a pyrometer to change pinions and axle tubes. It works surprisingly well, just keep a close eye on the temperature and don't let it get much hotter than 350.



-Abone.

 

I'll save you the trouble. The 9" Ford axle tubes won't work!
Many of the Tru Trac style differentials have no identifying marks. The exception is the Winters Track. They have part numbers and serial numbers engraved on them.
Real Gold Tracks may have some markings that indicate how 'tight' they are. Don't worry about that, yet.

Since you need a new R&P, I would suggest you get a 4.12 set, (4.11s are obsolete). There are exceptions, but generally you can make better use of change gear sets than with the 4.86s.

Also, since you have to replace the axle tubes, don't be in a big rush to install the new ones. It is much easier to build the center without the tubes. When everything is right, you unbolt the bells and install the tubes. Then bolt it back together.
As the other guys have said, I can supply you with everything you need including a differential.

Hint: Alliance Members get pricing that usually saves them enough to pay for the membership.

Bruce

 

Thanks for that !