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Old 02-17-2013, 01:47 PM
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Radiator, is this right and will it work?

I am reworking my core support to mount the new replacement radiator in my hot rod. I am concerned about vibration damage to the aluminum radiator and tried to come up with ways to protect it. Although I have seen lots of coolers that are seemingly solid mounted most say to rubber cusion them. Herre is my plan. The mounting bolt first must go through 1 inch square tube (my core support, the black box in the photo) which will have a rubber washer after the head. Then the channel I am using for the mounting bracket is next, with a piece of rubber hose over the bolt shank which will push against the mounting tab of the aluminum radiator (yellow arrow, here a scrap is used) with another rubber washer on the other side. All of the red arrows are pieces of rubber hose used as washers or spacers. So, I think there will always be a rubber cusion of some kind between the aluminum and the mounts. Is this right and will it work? Also, should the hole in the radiator tab be slotted to allow a little side wways movement?
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Old 02-17-2013, 03:53 PM
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I think your solution will work, but I have another idea to suggest that you look at.

Many GM OEM radiators just sit on top of a thick U-shaped rubber cushion that is mounted flat on the bottom support. Then the upper bracket on the support is bolted on top and there is another u-shaped cushion between the radiator and the top bracket. They don't even use any bolts through any part of the radiator itself. The radiator is just sandwiched between the top and bottom brackets.

Bruce
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Old 02-18-2013, 08:00 AM
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That looks like a good game plan to me. AS 75GMC says, you may want to add some rubber to the area if it sits in a saddle. I don't think you can do this at the top, I believe that is exposed all the way across. I used strips of squeegee material on mine, cut to fit, doesn't show much that way.

BTW, love your journal! I'll look at it some more later, supposed to work today. Dan
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Old 02-18-2013, 11:15 AM
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Radiators were also bolted firmly to the core support with no issues.

The aluminum radiators in my 59 Elky and my 66 are bolted directly to the support.
If they are firmly attached---there is no vibration issue.
All of the movement will be in the core support itself and the radiator is just going for a ride.

Now---if your core support has a left and right sections---then the radiator should probably be bushed.

Another option to isolate is to get some isolating mounts.
Sometimes see them on electric motors and they are 2 separate studs with an insulating gob of rubber in between them.

McMaster-Carr
Vibration-Dampening Sandwich Mounts.

For just a couple bucks each-----this seems much easier than to make something up,
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Old 02-18-2013, 01:23 PM
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Thanks guys! Today I pulled the rest of the supports, cleaned and sanded then welded up the old holes and drilled the new ones. I will also add some rubber cusion between the core support and frame as well as at the firewall.

Dinger, thanks for the comment! Nice to know some one looks at it.
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Old 02-21-2013, 12:11 PM
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Well this is what I ended up with. Still needs fine tuning and of course a good road trip. I'll stick this in my journal eventually.
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Old 02-23-2013, 12:47 PM
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Go to a bodyshop and ask the oldest body man if he has some rubber mounts for ac condencers or radiators that you can have. Us old guys never throw anything away!
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Old 02-24-2013, 10:37 AM
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Bob, thanks, I'll ask!
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