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  #24361 (permalink)  
Old 06-06-2018, 07:14 PM
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It may be fine Pugs. I left my Silverado running at the drug store with the air on and Barb in it while I went in to pick up a perscription. When I came out and got back in it the fan made a terrible wind noise. I realized that I had never heard the fan with the clutch fully ingaged before.

When you get the motor good and hot on a hot afternoon, see if it doesn't tighten up. If not, it is probably defective.

John

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  #24362 (permalink)  
Old 06-06-2018, 07:49 PM
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Quote:
Originally Posted by John long View Post
It may be fine Pugs. I left my Silverado running at the drug store with the air on and Barb in it while I went in to pick up a perscription. When I came out and got back in it the fan made a terrible wind noise. I realized that I had never heard the fan with the clutch fully ingaged before.

When you get the motor good and hot on a hot afternoon, see if it doesn't tighten up. If not, it is probably defective.

John
Yep, probably not hot enough to lock up yet. Those viscous clutches are strange animals... The clutch on my 2000 Silverado would roar from cold start up and then stop once the temp hit 100 or so, then kick back in when the temp hit 215. I like my 2011, never hear the electric fan until it gets hot.
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  #24363 (permalink)  
Old 06-06-2018, 08:04 PM
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Quote:
Originally Posted by Too Many Projects View Post
Yep, probably not hot enough to lock up yet. Those viscous clutches are strange animals... The clutch on my 2000 Silverado would roar from cold start up and then stop once the temp hit 100 or so, then kick back in when the temp hit 215. I like my 2011, never hear the electric fan until it gets hot.
I hear that. I am concerned about the fan David gave me for Precious. It is a pretty massive 18" with no room for a clutch. It may roar like jet engine. That will just have be one of the wrinkles to iron out when the time comes. I would much rather start out with too much fan than to small of one.

John

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  #24364 (permalink)  
Old 06-06-2018, 08:14 PM
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Pugsy the spinning after shutdown is normal by me. Road test.
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  #24365 (permalink)  
Old 06-06-2018, 08:52 PM
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If is is a cenrifucal clutch it is Normal to be able to spin it by hand,,if it is a thermal clutch with spring on front it should show some restiance should not spin over a 1/4 turn after you remove your hand.

Last edited by 496CHEVY3100; 06-06-2018 at 09:06 PM.
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  #24366 (permalink)  
Old 06-06-2018, 09:30 PM
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'Bout forgot to post the day. Conversation amount was less, still all pointless inquiries.

Tire thing was like 15 minutes out of the day just stuffing a rear one to eyeball interference. Chassis man placed the tire a half inch further back and plans to extend the control arms by 3/4" which should allow the correct fore / aft "at rest" tire position with the well still there. Its a starting point and I've made the tubs a half dozen times in my head. Not looking forward to extracting the old. Anyway here are appropriate visuals to go with that description. The new wheel joke is how much invisible ones cost.







Aside from all that, I cleaned up and coated the areas insde the quarter patch, then took the bumper off and finished up behind it-



Then went on to adding corners and weld prep on the left pan. Got my pilot holes done and screwed to recheck-



In the center, the plan is to box the area under the trunk latch support and just leave a flange there. The tank will need a sump hump up front and a fill hump out back so thats the plan, to leave it open for now.
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  #24367 (permalink)  
Old 06-06-2018, 11:32 PM
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At half time in the NBA Finals game 3 I got out to the garage! I got these nuts made and welded in to the back side of the hinge mounts. I did this to use that back bolt for fine tuning of the door fit. They used that bolt on the later trucks and cars, Don't know why they didn't on these.

Brian
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  #24368 (permalink)  
Old 06-07-2018, 04:09 AM
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Quote:
Originally Posted by 496CHEVY3100 View Post
If is is a cenrifucal clutch it is Normal to be able to spin it by hand,,if it is a thermal clutch with spring on front it should show some restiance should not spin over a 1/4 turn after you remove your hand.

Yes, thermal clutch with spring.
The engine is overheating in park/idle.
I've never owned a car that I could not leave running indefinitely and not need to worry about it. This is the second clutch from Rock Auto.


The engine was running really hot and by the time I turned it off, I figured it should be tight and giving a huge flow of hot air.
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  #24369 (permalink)  
Old 06-07-2018, 04:13 AM
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Quote:
Originally Posted by idrivejunk View Post
Pugsy the spinning after shutdown is normal by me. Road test.

Thanks Matt.


No disrespect, but this car keeps running hot at idle. Sure, driving will cool it off, but what happens when I pull up to a light or two with the AC on? The AC was off during the test in the video. The testing will remain in the driveway/garage until the fan can pull the hot air thru the rad.
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  #24370 (permalink)  
Old 06-07-2018, 05:07 AM
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Quote:
Originally Posted by 123pugsy View Post
Thanks Matt.


No disrespect, but this car keeps running hot at idle. Sure, driving will cool it off, but what happens when I pull up to a light or two with the AC on? The AC was off during the test in the video. The testing will remain in the driveway/garage until the fan can pull the hot air thru the rad.
Likewise, Pugs. Only a few things come to mind. Try as I might, I've not been any help to you so I've hushed. Respond or ignore, your pick but I'm trying best I know how. Don't bother re-hashing whats been done to this point on my account.

Are you still sans thermostat? I have never understood how that can work. With cool engine and cap off, can you see coolant flow through core?

How long does the system hold how much pressure? Cap also?

Can / have you verified accuracy of gauge reading?

Verified timing mark position in reference to TDC?

Verified no combustion pressure leaking into system?

Contacted clutch manufacturer yet, to ask what they would have you do?

Looked for machine shop over-bore marking on block? Peek at pistons with scope yet? Is it same on half race gas?

What fan blade are you using? Is it mounted proper side out? Some ain't marked.

I sympathize completely because I know the feeling of spending the money and taking multiple approaches and having no effect. As told, I added an electric. Skip/ignore as many of my questions as you like, they are merely thought generators not seasoned mechanic advise.

But check that last Q. I have put a fan on backwards before. Maybe its like a Pontiac and wants specifically .060 between water pump impeller and plate. Damifino.
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  #24371 (permalink)  
Old 06-07-2018, 02:56 PM
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Likewise, Pugs. Only a few things come to mind. Try as I might, I've not been any help to you so I've hushed. Respond or ignore, your pick but I'm trying best I know how. Don't bother re-hashing whats been done to this point on my account.

Are you still sans thermostat? I have never understood how that can work. With cool engine and cap off, can you see coolant flow through core?

How long does the system hold how much pressure? Cap also?

Can / have you verified accuracy of gauge reading?

Verified timing mark position in reference to TDC?

Verified no combustion pressure leaking into system?

Contacted clutch manufacturer yet, to ask what they would have you do?

Looked for machine shop over-bore marking on block? Peek at pistons with scope yet? Is it same on half race gas?

What fan blade are you using? Is it mounted proper side out? Some ain't marked.

I sympathize completely because I know the feeling of spending the money and taking multiple approaches and having no effect. As told, I added an electric. Skip/ignore as many of my questions as you like, they are merely thought generators not seasoned mechanic advise.

But check that last Q. I have put a fan on backwards before. Maybe its like a Pontiac and wants specifically .060 between water pump impeller and plate. Damifino.

Thanks...all the small points are always good to keep the brain's gears turning, unlike the fan blade...


Verified timing mark position in reference to TDC?

Contacted clutch manufacturer yet, to ask what they would have you do?



Timing has been on my mind as it's important to in the overheating situation.


I was actually thinking of calling the manufacturer. Probably will tomorrow.
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  #24372 (permalink)  
Old 06-07-2018, 03:32 PM
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Fan shroud can definitely be improved. I have the shroud which I believe was used on later Chevelles. It's missing the bottom left corner for some reason and the temp difference in that corner is quite substantial holding my hand there.
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  #24373 (permalink)  
Old 06-07-2018, 04:00 PM
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Fan shroud can definitely be improved. I have the shroud which I believe was used on later Chevelles. It's missing the bottom left corner for some reason and the temp difference in that corner is quite substantial holding my hand there.
If you're still running without a thermostat, I wouldn't rule that out either. Everything I've read indicates it can allow the coolant to pass thru the rad too quickly to cool. Even the race guys use a restrictor washer to slow it down some.

If the corner of the shroud is missing, the fan may be pulling air from there, rather than thru the core too. So many ways for an engine to run hot, it gets confusing.
I was going to suggest just getting a pair of electric fans and shroud but HOLY CAT, that crap has gotten expensive...
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  #24374 (permalink)  
Old 06-07-2018, 04:58 PM
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Quote:
Originally Posted by Too Many Projects View Post
If you're still running without a thermostat, I wouldn't rule that out either. Everything I've read indicates it can allow the coolant to pass thru the rad too quickly to cool. Even the race guys use a restrictor washer to slow it down some.

If the corner of the shroud is missing, the fan may be pulling air from there, rather than thru the core too. So many ways for an engine to run hot, it gets confusing.
I was going to suggest just getting a pair of electric fans and shroud but HOLY CAT, that crap has gotten expensive...

Thanks.


Yes, everything comes into play. But one thing at a time. The fan needs to spin or it won't cool for sure. I'm thinking of getting one like David mentioned. One for a pickup truck, severe duty.


FOUR SEASONS 36704














https://www.rockauto.com/en/moreinfo...1030442&jsn=23




BTW, I rolled the coil spring back 180 and it doesn't freewheel when turning off the key.
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  #24375 (permalink)  
Old 06-07-2018, 06:18 PM
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Might be a steering box clearance notch if its the wrong shroud.

I got the left trunk pan welded in and bolted the '59 body down for the first time.
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