Martin,
I pulled the belt off and the whistling stopped. So would that mean it's in the generator or fan? And would it be ok to drive it? I mean, I have been driving it, but I don't want to screw something up. What could it be? I just had the generator overhauled a few months ago.
Thank you,
Glenn
Glenn Burgess
Parker, Texas
61' 356B, T-5 Roadster
62' 356B, T-6 Roadster Twin Grille
64' 356SC, Coupe
13' 911 Carrera S
Nobody can predict what will happen. Of course you must have the fan working to drive farther than down the block or you will definitely overheat and put a big hurt on your engine. Fans have been known to explode and that can take out the oil cooler and destroy the fan shroud. If it is the generator you should fix it quickly.
This is a case where not driving the car might save you a lot of money. If your mechanic is not far away then you could drive the car at very low rpm to get there but nobody knows when or if your car is safe to drive.
'57 Speedster
'59 Sunroof
'60 Devin D Porsche Race Car
'63 Cabriolet "Norm"
'67 911 S Original Owner
'03 Ferrari 575M
'09 Smart Passion
Martin Benade wrote: ↑Wed Nov 06, 2019 12:54 pm
Still good to try it with the belt off in case it is generator noise or somehow related to the fan or air from it.
My friend has an SC and his engine whines/whistles like a jet engine when under acceleration.
Mark Sabbann
1964 SC Coupe 'Essy'
1965 C Coupe 'The Yellow Delicious'
Sometimes just slightly changing the fore and aft position of the fan will result in a whine...or diminish/end the whine. Possibly the fan isn't correctly shimmed within the shroud.
You can use a stethoscope, ( or even a long screw driver), held against the generator, to determine if the noise is from within it. Just use caution when leaning near a spinning component...especially if you have long hair.
Geoff Fleming wrote: ↑Thu Nov 07, 2019 2:43 pm
Sometimes just slightly changing the fore and aft position of the fan will result in a whine...or diminish/end the whine
You can grab hold of the top of the fan housing with the engine idling and move the housing fore and aft and you might hear a change in tone.
'57 Speedster
'59 Sunroof
'60 Devin D Porsche Race Car
'63 Cabriolet "Norm"
'67 911 S Original Owner
'03 Ferrari 575M
'09 Smart Passion