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  Fan Blade Contact with Fan Shroud

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Author Topic:   Fan Blade Contact with Fan Shroud
Dan
Journeyman

Posts: 29
From: Pasadena, CA, US
Registered: Jun 2000

posted 07-16-2001 11:52 AM     Click Here to See the Profile for Dan   Click Here to Email Dan     Edit/Delete Message   Reply w/Quote
On my '66 coupe (289) the fan blade has started to touch the bottom of the fan shroud (its an awful noise to hear). Had the engine mounts replaced and that did not fix it. Any thoughts on what caused this and what I can do to fix? I've also tried bending the bottom of the shroud. But there is much more clearance (between the outer edge of the fan blades and the fan shroud) at the top of the shroud than at the bottom.
Thanks,
Dan

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steve'66
Gearhead

Posts: 4307
From: Sonoma,CA,USA
Registered: Mar 2000

posted 07-16-2001 04:21 PM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
Dan,

You've got two choices, move the shroud down or the engine up. My shroud was mounted with cheesy little sheet metal tabs that would bend easily.

SteveW

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70 Pony
Gearhead

Posts: 1769
From: Glenmoore, PA, USA
Registered: Jan 2000

posted 07-16-2001 06:16 PM     Click Here to See the Profile for 70 Pony   Click Here to Email 70 Pony     Edit/Delete Message   Reply w/Quote
Steve's got it Dan...Had the same prob....Move that bad boy down...a lot easier than movin' a motor up....

------------------
EDDIE D
Resto Mod '70 Sport Roof
Arrest Me Red

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Dan
Journeyman

Posts: 29
From: Pasadena, CA, US
Registered: Jun 2000

posted 07-16-2001 06:46 PM     Click Here to See the Profile for Dan   Click Here to Email Dan     Edit/Delete Message   Reply w/Quote
My fan shroud is as far down as it can go right now...and it can't go down too much farther before it hits the transmission cooling lines.
Maybe I can get the four openings in the corners of the shroud where attaching bolts go enlarged so I can slide the shroud down a bit.
Very embarrassing question...but is there only one way for the shroud to be mounted, I mean, is there anyway to mount it upside down?

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mellowyellow
Gearhead

Posts: 4608
From: So. Fl.
Registered: Aug 2000

posted 07-16-2001 07:00 PM     Click Here to See the Profile for mellowyellow     Edit/Delete Message   Reply w/Quote
Next question...what kind of fan are you using. I have had this problem too as those shrouds are flimsy. I would keep adjusting as it is pliable. I am using a fan from classic air. As I have a a 4 row, I couldn't use the original AC equip clutch fan. I have a 65. Make sure your fan is not too big.

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Dan
Journeyman

Posts: 29
From: Pasadena, CA, US
Registered: Jun 2000

posted 07-16-2001 08:06 PM     Click Here to See the Profile for Dan   Click Here to Email Dan     Edit/Delete Message   Reply w/Quote
The fan blade is a 5 blade fan, 17 inch fan (I believe) with a 5/8 inch center hole. The car has A/C (inoperable currently), thermactor and power steering.

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mellowyellow
Gearhead

Posts: 4608
From: So. Fl.
Registered: Aug 2000

posted 07-16-2001 10:28 PM     Click Here to See the Profile for mellowyellow     Edit/Delete Message   Reply w/Quote
17" is right. If you can move it down like the others said. I had a mount loosen up a couple months ago and it nicked the shroud.Is this why you changed the mounts? Did it just suddenly start when you had the old mounts? Maybe dumb questions, but trying to figure all angles as I had this happen, Those shrouds really are something else! They now sell a 3 1/2" abs shroud that is superior. But, that could be even more trouble if you're having clearance problems.

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Dan
Journeyman

Posts: 29
From: Pasadena, CA, US
Registered: Jun 2000

posted 07-17-2001 12:38 AM     Click Here to See the Profile for Dan   Click Here to Email Dan     Edit/Delete Message   Reply w/Quote
Yes, I had the engine mounts replaced because that is what I thought the problem was at first (several months ago driving the car one night when the fan started scraping the shroud). In addition to replacing the engine mounts, started me on an interesting (and slow) path of pulling off several parts (brackets, valve covers, air cleaner assembly, pulleys) to have them bead blasted and power coated, replaced the water pump ...and when everything was back together...still had the fan hitting the fan shroud!!!!!!
I didn't get a chance to look at the car tonight...but is there only one way a shroud can be mounted...or can they be rotated 180 degrees to reverse the top and bottom position?

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mellowyellow
Gearhead

Posts: 4608
From: So. Fl.
Registered: Aug 2000

posted 07-17-2001 07:09 AM     Click Here to See the Profile for mellowyellow     Edit/Delete Message   Reply w/Quote
No1 they cannot be rotated. Even though I know the answer, {Ithink} LOL! I have been to the garage 3 times on this thread to look at mine. There are specific notches in that tin thing called a shroud. The funny part is, they work! Man, I hope you get the problem solved.

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70 Pony
Gearhead

Posts: 1769
From: Glenmoore, PA, USA
Registered: Jan 2000

posted 07-17-2001 10:53 AM     Click Here to See the Profile for 70 Pony   Click Here to Email 70 Pony     Edit/Delete Message   Reply w/Quote
Well let me add more S**T to this game...On the 69 and 70 there is a top and bottom with indents for radiator hoses.....
If the car is not a concours show car...personally I would get a dremel tool, put on a cutting blade and do some surgery on the shroud.....the 70 shroud is really nothing more than what looks like corrugated cardboard.....I have (FIXED-PATCHED-and REPAIRED mine more than I'd like to say)..
They're about $70 for a '70
Just my 2 cents....worth 1 cent...

------------------
EDDIE D
Resto Mod '70 Sport Roof
Arrest Me Red

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