Fan and clutch loud woosh question

[rufcar]

When I got my 63 R2 in July the PO said the fan always ran full bore. I checked the feel cold and it was like all my other cars but just in case I got a new one and replaced it. It is still the same. The engine sounds like a huge fan on full high all the time. IT IS NOT THE BLOWER! How do I know that? Because it was the same before I had the blower hooked up. Any suggestions? How does everyone else's R2 sound?

[Leo B]

In this videothe engine is cold so you will hear knock sound from lifters. But when warm the sound is much softer. Note that phone records mostly high sound frequencies.
https://www.dropbox.com/sh/uztyilp7fwc3q3i/AAC8oDcL3kHoGRaIM0XxW9TNa?dl=0

Edited September 21, 2022 by Leo B

[rufcar]

Leo B Thanks for that. With mine the fan sound like its locked up. 2nd clutch, turns free always full bore. its all I hear even through the dynamatted cabin and insulated hood! jim

[Leo B]

Does it spin freely when you turn it by hand but not roll? Have you installed the fan correctly way (5 blade: the top of the blade turns forward)?
BTW... do you have 5 blade or 6 blade? It has been said that 6 blade makes more noise?

Edited September 21, 2022 by Leo B

[rufcar]

I just checked I have the 6 blade fan. Tkx for that.

[Leo B]

Hi again. I just remember one thing which makes loud sound - Bad Timing Gear.
Also note that Stude Avanti 289 uses aluminium gear which is not the quietest. I had classic Volvo and tested three different timing gears; Fiber, aluminium and steel. Huge differences. Fiber had very soft sound and steel like airplane turbo sound. I think that fiber do not stand 289 power. Aluminium is used also in classic sport Volvos. Steel in race Volvos. Bad and dry timing gear will make very loud sound.
I use Mechanic's Stethoscope to find where the sound comes.

Edited September 23, 2022 by Leo B

[64studeavanti]

I would change out the 6 blade fan. I tried one on my 64 and the noise was unbearable. Went back to stock 5 blade. Problem solved.

[Avanti1963!]

The reproduction fan drives are known to be much louder than the factory drives.  I was told they sound like a wind tunnel.  

[rufcar]

met several Avanti owners at Hershey. all 3 at the same problem as I. one guy changed his clutch 3 times to no avail the other 2 use a 5 blade original fan and its still very loud. Went for a drive today with the windows closed. All I head is that fan. I think but not sure If I can find a different fan clutch than the ones we buy from Avanti suppliers it might turn even more freely and make less spinning noise. 

 

[mfg]

I agree with 64studeAvanti..

Replace the six blade with stock five blade..

Doing that will definitely reduce fan noise level.

[rufcar]

Like I said the 3 folks I met did that and it's still very loud. 

[Leo B]

When I bought new water pump, cam shaft timing gear, I bought also new fan shroud, belts and this fan clutch and result is normal "noise/music".
https://www.parts123.com/parts123/dyndetail.pta?catalog=0001003a&uKeY=AAECZ

Edit. If you have stethoscope check also sound from timing gear.

Edited October 9, 2022 by Leo B

[rufcar]

dont need one you can see and hear the sound of the fan. The entire engine was rebuilt. Tkx

[mfg]

'Fan roar' is definitely more noticeable in Avantis than in 'steel' Studebakers....Just part of the 'AVANTI EXPERIENCE'!