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Discussion Starter · #1 ·
I am presently trying to decide just where I am going to set my VB and P spreader bar.
http://www.digitalcorvettes.com/forums/showthread.php?t=56384

First look appears I may have to use 1/4" angle instead of the supplied bracket pieces, and bolt it underneath to clear the fan sheave and fan.

Now since I restored the whole powertrain, it dawns on me I did not replace the fan and clutch that came with the car. Now, since I bought the car from Bubba Bob, I am not positive the clutch is correct.

The fan sits outside the shroad 3/4" or so, with clearance available forward. Moving the fan forward would be helpfull.

So, any 81 owner willing to check the sheave to fan dimension for me would be helpfull. If I can use a clutch with a longer snout, or this one is wrong, well, you get it.

The following pic will show the measurement I require.



 

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In my world the fan would be totally contained in the shroud with very little (.100) clearance at the tip. More efficent. Now .100 clearance on a car with soft mounts is a bit impractical but maybe something like .250? totally within the shroud. Make the fan work a little harder, but it would pull more air. That'd be a great place to start anyway, and if you could find a clutch with enough shank, you'd get enough space for a spreader bar.

And how long have you had those calipers? They look like original equipment--

with the Model T.:rolling:
 

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This is the best I can do under the circumstances. :D

(My car is Bone Stock as far as I know.)

 

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Discussion Starter · #4 ·
This is the best I can do under the circumstances. :D

(My car is Bone Stock as far as I know.)

Thanks boss. Looks close to 1.6 to me. Will lay out my tape to duplicat, but looks the same. I appreciate you taking the time.:thumbsup:
 

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Discussion Starter · #5 ·
In my world the fan would be totally contained in the shroud with very little (.100) clearance at the tip. More efficent. Now .100 clearance on a car with soft mounts is a bit impractical but maybe something like .250? totally within the shroud. Make the fan work a little harder, but it would pull more air. That'd be a great place to start anyway, and if you could find a clutch with enough shank, you'd get enough space for a spreader bar.

And how long have you had those calipers? They look like original equipment--

with the Model T.:rolling:
Now I have a starting point. Looks like the clutch is stock. If I can just find one 1/2" longer, I would be happy.:laughing:

Somehoe I knew you would comment on the calipers. They were Dads from the 50's. I think of him everytime I use em.:thumbsup: :cheers:
 

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Me pass a chance like that? No way bro. I've got 2 footlockers full of stuff like that that belonged to my Great Granddad- He was a machinist for Santa Fe RR- retired in like, 1960.. Was there for the switch from steam to diesel.

:cheers:
 

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Now I have a starting point. Looks like the clutch is stock. If I can just find one 1/2" longer, I would be happy.:laughing:

Somehoe I knew you would comment on the calipers. They were Dads from the 50's. I think of him everytime I use em.:thumbsup: :cheers:


I MIGHT HAVE A CALIPER LIKE THAT IN MY TOOL BOX WERE THEY FEOM THE 50S :lookinup:
 

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what if you put in longer studs into the water pump and then used a spacer to shim the clutch out to where you wanted it. just a thought :thumbsup:

Kevin
 

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Discussion Starter · #11 ·
not such a good idea i take it. oh well i tried.i'll go back to watching tv now
I just looked at Summit. Last time I bought a spacer they made 1 size. Now they make 10 pages of them. I don't know if I feel old, or stupid.:rolling:
 

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I do not think that im qualified to speak intelligently on your dilema.
But if I had to give my best educated guess,i would have to say, no comment :rolling: :rolling: :rolling:



Did any of that make since without incriminating myself.:crazy:
 

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I do not think that im qualified to speak intelligently on your dilema.
But if I had to give my best educated guess,i would have to say, no comment :rolling: :rolling: :rolling:



Did any of that make since without incriminating myself.:crazy:
Well that myth is BUSTED :smack
 

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I MIGHT HAVE A CALIPER LIKE THAT IN MY TOOL BOX WERE THEY FEOM THE 50S :lookinup:
Its a Lot older than that, I seen pics with Davinci useing them
 

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Discussion Starter · #18 ·
Okay, at the risk of further humility, I press onward.
I measured the fan clearance to the shroud. I have about 3/4" give or take.
I can get a 3/4" hub by 1/2" spacer. So I take off the fan to see if it will work, and it looks like it still will hit the fan sheave.:WTF I would have to space 1" forward to raise the bar high enough to go directly in line with the a-arm shafts.

So, it looks like the cure is to use 1/4" angle iron, and bolt the spreader BELOW the angle iron. That would also make it easier to remove in the belt changing process., and no welding required. Just spot the hole and bolt vertically.

So, I ask the following. Does this sound adequate enough for you pencil pushers? And secondly, I also have offset shafts installed. This gives me enough thread to sandwich the angle between the existing nuts and another set. Adequate, or better to remove the nuts and jam it against the shafts?
I ask because this setup will probably tend to rock the threads downward.
I am quite sure I can squeeze 3/8" angle in there as well.:D
 

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i posted a large pic somewhere and it's hardly visible there but the spreader bar i made for a friend mounts below the cross shafts as well, I moved it down to where it's just above the lower radiator hose, it was the only spot w/ enough clearance. It will be just fine there, just fabricate some proper brackets and it'll be fine.

I'll draw a quick model of how I did it, hold on...
 
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