1970 383 A31 4spd fan-clutch fan pulley question?

[SuperBeeFan]

Hello all!

Looking for all to reply with your experience and knowledge please.

I have a 70 Bee factory 4spd A31 option car.
When I purchased it, came with an already installed aftermarket aluminum radiator that had seen better days. Also, installed was an older flex fan, no, fan shroud and there’s a large spacer between the fan and the pulley.
I didn’t include a picture of the fan clutch or fan shroud.

I purchased a Glen-Ray factory radiator that Bob provided me the correct radiator information (have) and correct fan shroud information (have), correct factory type Fan from Mancini Racing (have) and correct fan clutch type (have) to replace the old stuff.

I removed the old radiator and test dry fitting new stuff above when I realized that I missed a couple of questions I need help with? Please see pictures below? 1st pic is old radiator before removing it.

1) Do I use the large spacer that’s currently between the fan pulley and the old flex fan, with the new Mancini fan and clutch? Or No spacer? If a spacer is supposed to be between the fan-pulley, how wide?

2) I’ve seen mounting bolts and also mounting studs with nuts and lock washers, when installing the Mancini fan to the clutch fan? Which is correct the studs? Or bolts?

3) How much space should be between the clutch fan front and the radiator cooling fins when mounted to the engine pulley and torque specs?

Thank you,
Ken

Please see the pictures below

 

[pnora]

Hello all!

Looking for all to reply with your experience and knowledge please.

I have a 70 Bee factory 4spd A31 option car.
When I purchased it, came with an already installed aftermarket aluminum radiator that had seen better days. Also, installed was an older flex fan, no, fan shroud and there’s a large spacer between the fan and the pulley.
I didn’t include a picture of the fan clutch or fan shroud.

I purchased a Glen-Ray factory radiator that Bob provided me the correct radiator information (have) and correct fan shroud information (have), correct factory type Fan from Mancini Racing (have) and correct fan clutch type (have) to replace the old stuff.

I removed the old radiator and test dry fitting new stuff above when I realized that I missed a couple of questions I need help with? Please see pictures below? 1st pic is old radiator before removing it.

1) Do I use the large spacer that’s currently between the fan pulley and the old flex fan, with the new Mancini fan and clutch? Or No spacer? If a spacer is supposed to be between the fan-pulley, how wide?

2) I’ve seen mounting bolts and also mounting studs with nuts and lock washers, when installing the Mancini fan to the clutch fan? Which is correct the studs? Or bolts?

3) How much space should be between the clutch fan front and the radiator cooling fins when mounted to the engine pulley and torque specs?

Thank you,
Ken

Please see the pictures below

View attachment 1982153

View attachment 1982154

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View attachment 1982159

View attachment 1982160

No spacer. You can use studs or bolts. Not sure on how close but it is close to the radiator. Torque spec is in the FSM but I never used it.

 

[Bird 426]

Is the Mancini clutch drive like the Hayden #2947? They can be a bugger to install. Some like the studs, some like bolts. When you get one started, move on to 2-3-4, you have to work them all on a little at a time, until they are all seated, then final tightening. Best to do this before you install the radiator so that you don't mess up your $1,400. radiator! Check your space so that you know that everything fits!
You'll get it, good luck and patience!

 

[R413]

The factory did the studs go into the clutch and they hold the fan to the clutch. The bolts mount the clutch and pulley to the water pump.

 

[devinism]

And you might think about doing something with the driver's side motor mount insulator. I've seen MANY fans chew up nice radiators.

 

[Geoff 2]

If you are having overheating problems, you should instal a shroud. Use a fan spacer that places the fan blades half in/half out of the shroud. Shroud should be sized to work with the fan diameter, otherwise the fan/shroud deal is useless.