22 replies to this topic

[shep_cobain]

Hi guys,

excuse the other two topics my iPhone was playing up.

Basically i snapped the blades of the plastic fan by accident aso decided to upgrade to a metal fan. Went to fit today and put the bolts through the 4 holes but the original bolts dont fit.... they are to big and round off. What do you suggest i do as the bolts have to be the right size and threat to fit to the water pump pulley?

Thanks.

[charie t]

they are to big and round off.

You mean too long?
Cut them down if they are too long

[shep_cobain]

they are to big and round off.

You mean too long?
Cut them down if they are too long

no the width of them. They don't fit through the holes on the new fan. I'm just using the bolts from the other fan as it didn't come with any but they are to wide to fit through the holes on the new fan. If i try it just rounds them off. Whats the best point of call? Reboring the holes on the fan with a drill as the thread/bolt size has to be what it is now to screw into the water pump pulley.

Edited by shep_cobain, 05 June 2011 - 01:20 PM.

[charie t]

Slightly confused as to why the drilling holes out is such an issue here?
Just get the drill out and find a drill that allows the bolts to pass through the fan

[Cooperman]

The bolts must be 1/4" UNF. Tjhat is the same for all fans and water pumps. Therefore, there should be no need to drill out anything.It may be just paint in the bolt holes. Do not drill anything, investigate what the actual problem is.

[maccers]

I have found the same as well, using a heritage 6 blade metal fan I needed to use a 6.5mm drill to open the holes up enough that the bolts passed through. Now however they are too long as the plastic fan as 1/2" or so metal inserts at the centre but the new 6 blade fan is much thinner metal where it bolts to the hub. Need to use a small spacer now to push the fan out clear the s/c pulley as the angle of the metal blade is greater it may catch the pulley.

[maccers]

Also, as I am now waiting for parts to arrive, I assume the 6 blade fan its fitted with the rounded rivetts facing the rad, and the natural curves created by the fan angles is where the pulley locates?

[smev]

Yea, you want the uh 'arms' behind the blades, the centre curves back over the pulley slightly.

As I have discovered this week, the smaller spacer available cleared a round breather, but didn't provide enough room to clear the rad, even without the spacer it seemed to be a few mm too close so pretty stumped on that now. I knew I probably needed a flat breather but is there a different rad bracket too?

And to top off this weeks dead end, the new electric fan I got is refusing to seperate so I can turn it round the right way

[maccers]

My main problem is the s/c pulley belt, I dont have a breather on the timing chain cover, have one in the fuel pump hole. I painted my rad cowling to make it look nice, but will probably have to butcher some of it to allow the metal fan to rotate without hitting the edges, I had to trim plastic fan blades to clear it..! I believe there was, and dont know if its still available, an "export" cowling for the metal fan. All good fun!

[Barman]

I have the hot climate (6-blade) fan... would a picture help...?

[maccers]

if you can Barman

[Barman]

if you can Barman

 

Stand by....

[Barman]

I have a 2-core rad if it helps...?

 

Drove to Pafos and back yesterday in 35°C+ temperatures and the gauge didn't move above 'N'....

 

Rad cowl is in 2-parts, there is a large spacer behind the fan...

 

Any more info...?

 

Oh, it is a 1973 1275GT

 

OK?

 

Attached Files

•  DSCN0652.JPG   55.63K   44 downloads
•  DSCN0653.JPG   56.11K   32 downloads
•  DSCN0654.JPG   64.43K   38 downloads

[Captain Mainwaring]

I have a 2-core rad if it helps...?

 

Drove to Pafos and back yesterday in 35°C+ temperatures and the gauge didn't move above 'N'....

 

Rad cowl is in 2-parts, there is a large spacer behind the fan...

 

Any more info...?

 

Oh, it is a 1973 1275GT

 

OK?

 

 

 

God....we can't even make fan belts any more....I bet Mr Fenner is spinning in his grave.

 

For what it's worth I use V belts on projects to move some quite substantial amounts of energy around (250kW - 335 HP ID Fans) and after trying the cheapies, not one of my customers (even the Indian companies) will waste their money and time on anything but Gates or Fenner or one of the other major V belt suppliers.

[Barman]

 

I have a 2-core rad if it helps...?

 

Drove to Pafos and back yesterday in 35°C+ temperatures and the gauge didn't move above 'N'....

 

Rad cowl is in 2-parts, there is a large spacer behind the fan...

 

Any more info...?

 

Oh, it is a 1973 1275GT

 

OK?

 

 

 

God....we can't even make fan belts any more....I bet Mr Fenner is spinning in his grave.

 

For what it's worth I use V belts on projects to move some quite substantial amounts of energy around (250kW - 335 HP ID Fans) and after trying the cheapies, not one of my customers (even the Indian companies) will waste their money and time on anything but Gates or Fenner or one of the other major V belt suppliers.

 

 

For what it's worth, my Mini produces substantially less than 335HP...

 

 

 

 

 

 

 

 

 

 

... you'd almost think that somebody turned the belt around so that the label appeared in the pictures wouldn't you...?