Rear hub /drive hub

Hill Engineering makes one. Its called a ring nut.

Just looked. Same tool same price.

You want a well made special tool for a Ferrari and you are unhappy with that price?
You need to find a different brand of car. Have you considered buying a Toyota?
Seriously.

 

The old saying is... "if you want to play, then you must pay" lol

 

His cynical response does have an air of seriousness. There are parts that "require" custom tools. He is also a professional lifelong ferrari mechanic well skilled in the carb cars along with the new, so for him this investment makes sense. Also he has seen enough owners try to hack their own work around that winds up mangling parts and creating unsafe conditions. Like you could use a flat head screw driver and a hammer, wedge it in there an bang away to loosen or heaven forbid tighten to a guessed torque. It would work but really mess things up at the same time.

Sometimes there are no substitutions. Is the juice worth the squeeze? 57 pounds sterling is expensive. but what is your time worth researching - it seems you may have some as you're on retirement (Im jealous). What is the cost / ease to move your car, pay someone, then get it back to your garage (assuming non functioning). sometimes I find myself searching for something a little bit cheaper bu the time I wasted instead up just buying something probably cost me more in productivity.

though this then goes to you to be creative to find an alternative - to which there are some but not many. Define the part. Define the tool. Come up with the technical parameters - what does superformance or hill call it. at its simplest form you are looking at a four prong tool, which is sold in the form of a socket. I started on bicycles as a youth and its the one place in USA mechanics I can think where on especially bearings, we use the term "spanner" that is regularly used as "wrench" in the USA. But here we often consider this to be a "ring" based wrench. so you have a ring. does it have to be four, can 2 prongs do the same job - likely but you have to be that much more careful. do you have tools to make or modify tools? maybe you can find some thing close or adjustable Are you willing to buy on amazon and return it if it doesn't work or suck up the cost if you mess something up and can't return. These are all questions I ask myself.

https://www.ebay.com/itm/353428798532 . I wound up settling on this solution for these but I can grind the pins and buy additional to fit the need and I'm careful knowing this isn't the four prong solution - its not as safe or precise. I can use a long ratchet or breaker bar for leverage. Heat is my friend for loosening. I would recommend finding something more specific first. Don't hurt yourself.

so my web searches would be 32mm ( or correct measurement) four prong socket. or adjustable spanner. You might find, your assumed most expensive solution is actually the cheapest.

Cheers and good luck!

 

I am only 4 years younger so BFD. and there isn't a single word of negativity until now. It was 100% reality and I know you not only cannot recognize it, you cannot deal with it. I spent time looking up possible alternate sources and that what I found so FUC% you very much *******. In case you have not heard it is 2024 and special high quality low volume tools are expensive. The Hill tool is very reasonably priced considering how few will ever be made.
And its true, maybe you should consider a Toyota. No one on planet Earth with a brain ever suggested a Ferrari was going to be cheap to own and no one needs one. If the price of ownership bothers you unlike many, you have a choice.

 

JFC, grow the pho cup....and maybe take a look at the cost of Toyota specialty tools before going all F-car smug. The cost of lowly Corolla tools would have even you contemplating a new line of work. The OP asked a question which you apparently mistook for an invitation to be a condescending Richard.
And I like old sayings too, my favorite is "Don't be a donkey".
- Dave

 

FWIW…. I’m a member on a different site for Mercedes antiques… And on that site we have a tool loner program amongst us. Works very well and helps everybody share both knowledge expenses and tools… Just saying

 

BFD?.. borrow Ferrari Doohickey?

 

I lent my Ferrari specific tools to a member here, a lot of them. 7 years later. I don’t have them. I guess I spent the money to make that guy go away

 

Search for "ring nut socket", they are commonly used in industrial applications. If you buy from a Ferrari specific supplier you will pay the Ferrari tax. My 1957 Oliver tractor uses them in the transmission although not metric, I made my own. 4 wheel drive trucks can use them in the front axle, lots of applications out there. Knowing the size required would help, I can't help with that but maybe someone else can chime in.

 

Here is one I recently cobbled together from stuff I had laying around, worked perfectly for removing the air pump pulley off the end of the exhaust cam on my GT4. Amazon has tons of sockets available, again you have to know what size to buy.

https://www.amazon.com/spanner-nut-socket/s?k=spanner+nut+socket


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LOL! Haven't been in the 308 section for ages and I find this! Great fun! Carry on...

 

Based on some web searching (during some down time looking after an elder...I don't have a 308 that uses this tool)

This tool is called an internal tooth groove nut socket.

The closest size more widely available is din standard KM9 which would fit a 45mm ring nut, but it appears Ferrari uses a unique sized 44mm outside diameter ring nut for the application noted. Baum Tools also makes a 44mm socket, but it will not be less cost that the Hill made tool.

https://www.toolsource.com/ferrari-tools-c-1321_831_1551/ferrari-rear-axle-groove-nut-socket-44mm-p-114377.html

Unless you can find a used one or borrow one, I don't think you will find anything lower cost than the Hill tool, which is fairly priced for a specialty tool. There is nothing used on ebay I could find at present. You may as well buy the socket, and then resell on Fchat/ebay, there is no doubt always some latent demand for this low frequency use tool.

Nothing wrong with trying to be economical on a long time hobby into retirement!

 

Correction KM6 is the OD 45mm groove nut tool.

 

Saw this cut from and open end wrench with an angle grinder.

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That speed grinder home-made version reminds me of the "fast" open end wrenches which only have one claw.
Don't know the correct name for them (as you can tell...).

Or like a small version of a morse chuck release hook of your mill or lathe.
Which is similar to a C-wrench to adjust coil overs. Just smaller

 

There are commercially-available "hook wrenches" for ring nuts, but these are usually smaller, can only provide limited torque, and need 90 deg access to the shaft = not really useful for a 308 rear upright.