430 whining noise from rear

Hmm, the gearbox and entire transaxle can be noisy and temperature may have an impact. I've owned my F1 Spyder for 7 years and just had the timing belts, tensioners and bearings replaced with Hill parts by FoNE here last year. These are even louder than the old ones but you can tell they are working by the noises passing through rpm ranges, loaded and unloaded on the drivetrain. I pray the dealer did not skimp out on me because they were cool with the parts and even marked them up a bit. Beyond all this, the transaxle still makes definite harmonic noises especially up to highway speeds. I am happy with my gearbox. Changed the fluid last year and boroscoped the gearbox while I hunted down a loose fill barb from the gear oil pump. Eventually grabbed it at the drain hole. Gears are in great shape. No glitter in the fluid. Also airlifted the coolant last month. Looked almost brand new. My clutch however, was another story. A master Ferrari Maserati tech is changing it for me now in his shop. He has it all apart and we need to resurface the flywheel a couple thou to clean up hotspots. That's for another post.

p.s. Just noticed you were talking about a 430, sorry! I got my 360 with 8900 on the clock. I've put 20K on since then

 

Are you having noise all the time or at specific speeds and RPMs?

If the gearbox is slightly low on fluid, it can whine at highway cruising speeds and part/off throttle.

 

Mine also has lots of noises from engine, but no whine…but great to hear your car is back on the road!

 

Have a look at the drive shaft bearings for wear

 

As mentioned above check fluid first ...sometimes techs I'm a rush don't fill correctly

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In case you’re not aware, the F430 doesn’t have timing belts, it has a timing chain that never needs replacing except during an engine rebuild.

It only has one belt, and that’s for the accessory’s. No damage will occur if it breaks while you are driving, except you will be stranded. It only needs changing every 5ish years, maybe. That belt is about $40 and takes 5 minutes to change once the belly pan is off. Don’t let any dealership tell you anything different.

Just as a comparison, my 2006 Scion commuter car has 230,000 miles on it and only had its accessory belt changed once.


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How long since last time the engine mounts were changed, as mine were good after 14 years

 

That pisses me off that they are trying to take advantage of you. I’d go somewhere else for all your service. If they would try to screw you that bad for an accessory belt, what else are they trying to do?


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Only have to remove bottom tray and then 5 minute job to change the aux belt. About 1 hour to change both engine mounts- i did both these job myself on my garage floor

 

Carl Ryalls (STR, 1-209-810-6501) also rebuilt my 360 manual transmission. Has worked perfectly ever since. He's rebuilt around 150 430 transmissions and about 250 360 transmissions.
Highly recommended.

 

Thank you @SoftwareDrone my F430 has a whine at between 70-80mph and only in 6th gear. Clears below and above that speed. I used tribotex transmission additive and that really quieted it down but it's still there and more faint. Not sure it's worth rebuilding the whole transmission which is otherwise perfect....

 

That's unbelievable. It takes about 2 minutes to change with the belly pan off and is a $20 Dayco belt.

Common issue on F430s. Make sure fluid level is correct (at "Max" line).

Definitely not worth a rebuild.

 

How do they know it’s at the normal level without the dipstick in it? Did they install a new one to check the oil level?

The “dipstick” for the gearbox isn’t just a dipstick, it’s the top plug with the dipstick attached to it. Without it installed, there would have been a 1/2”-3/4” open hole in the gearbox the entire time.

I’d have the gear oil drained and replaced, not just a new dipstick/plug installed. Depending how long it was out, a lot of road debris could have gotten inside the gearbox.


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Hope the dipstick didn't fall off in the gearbox. That for sure would make a noise.

 

I once purchased two engine mounts from my local Ferrari dealer, had them installed and one of them failed immediately. The response from the dealer was basically, "Don't know what to tell you". I had to purchase another one (not from the Ferrari dealer) and have it installed.

My car has the same whine in 6th under accel/decel. I did a long writeup somewhere on here as to the cause. It won't hurt anything but would cost a fortune to fix it.

The dipstick thing has me scratching my head. There is no way the dipstick could have fallen into the transmission, but I can't imagine driving the car 30-40 miles without one without serious consequences.

 

When changing the motor mounts, be sure they fit new stainless or galvanized spring washers to the 4 retaining bolts, mine had given up and the nuts were only hand tight. Avoid plain steel or black spring washers as they will react with the alloy

 

Did the 4 bolts come loose as they refitted the old spring washers