Engine out. Wrecked the ring nut on the main TBelt drive pulley

You wont get any other nut faster! do it right, buy the nut and socket from RA

 

That is a very fine thread and no one will have a hex nut like that. You do need the nut, and the tool. That is the ONLY 4-prong tool I bought because it is so hard to grind a socket to fit that nut. Everything else with 4 prongs, I ground a socket to fit.

 

IIRC the ring nut is the same as the steering wheel on the 348. Hint, hint.

 

Buy a new nut.

Then make your tool to fit the New one. Or buy the tool.

Then when done sell the tool you bought or put it in the box to collect dust until the next time.

 

Don't think so.

 

Just reuse the old nut.

 

...With some loctite. Will be fine



Probably..

 

Weld the pulley on.

 

Engine out in 8 hours is strong work! Just jacking the car up, pulling the rear wheels and undoing all those fasteners to remove the 6 plastic fender liners takes me a fair bit of time. Then there's the wiggling of ECU plugs through the little slots in the bulkhead...
I'm wondering why your home made tool mangled the nut. Although no work of art, the 4 pins look pretty straight and square. Looks like hooking it up to a good impact gun should have done the job.

 

Do it right. Buy the nut and socket from Ricambi.

Brewman

 

An impact gun is the reason for the failure IMO. Right tool for the job.

 

I don't know the cost from Ferrari for this nut but my past experience with OEM bolts/nuts has been quite reasonable.....but regardless buy a new nut and the tool to install it.
Good for you on doing your own engine out.

 

Agreed....the impact gun and correct socket would have made this re & re a non event.

 

found it at Ricambi: 104919 [104919 RING NUT] $4.28 each

 

and the tool at Ricambi: RNT-28 [RNT-28 28mm Ring Nut Tool] $97.00 each

 

I have the proper tool (RNT-28) and a good impact gun (@120psi), but I can't get the nut off. It's all ready started deforming, so I'm going to get a new nut for $7. I have it soaking right now with PB Blaster and I figured I'd try again tomorrow.

Any suggestions?

 

Do you mean you have a 120 lb impact gun?
My impact gun is 385 lbs.
Also what size is your compressor?

 

A good IR impact gun, well oiled, set at 120 psi for air, will make easy work of that nut.

 

I have a Craftsman stamped IR gun running at 120psi. I'm going to pick up another gun today to see if it's just getting old. (Thinking back, I had to use a breaker bar to get the lugs loose) What really bothers me is that the impact hits walked the crank way off TDC. I put the pulley back on and turned it back to TDC.