Radiator Help Please!
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Freshman User
Joined: Sep 2014
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Radiator Help Please!
My radiator has an unused nipple on the filler neck, just below the overflow port, and the rubber end cap has cracked. I have seen this rubber end cap, held on by a hose clamp, bulging when the engine is at operating temp and it finally burst the other day. What should I use to cover the nipple that can hold up to the hear and pressure better? What is the point of this nipple anyways?
Cargo Master
Joined: Jan 2004
Posts: 3,118
Likes: 149
From: South Dakota
I would measure the outside diameter of the nipple and go to the auto parts store and see if they have a replacement plug made for just this purpose. I see your nipple is a bit bunged up, but with a little lube(maybe just water) you should be able to work the new plug on. Carefully place the hose clamp in the correct position. You may want to get a new one a bit smaller.
If they don't have the replacement plug and try to sell you a hose with a plug in, I would shop around. A hose with a plug in would add extra weight and strain to the already damaged nipple.
If they don't have the replacement plug and try to sell you a hose with a plug in, I would shop around. A hose with a plug in would add extra weight and strain to the already damaged nipple.
Hotshot
Joined: Jun 2015
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Elder User
Joined: Sep 2018
Posts: 735
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From: NC
In the past i have used 2 small hose clamps, a short bolt and a short length of rubber hose. put the hose on like the cap is on there now with a clamp, put bolt in the hose with some rtv dabbed on the threads and put the 2nd hose clamp over the hose and bolt. . never had an issue.
Laughing Gas
Joined: Feb 2015
Posts: 765
Likes: 1
That line should actually have a connection to the metal pipe where your coolant temp sensor is, or in se applications it goes to the throttle body. I can upload pics of mine, it actually helps my system "burp" air from the block.
Tuned
Joined: Jul 2002
Posts: 479
Likes: 12
From: Louisiana
I had the opposite issue.. I replaced my radiator and it did not come with the nipple to connect my hose. So I screwed a bolt into the hose and used a hose clamp to make sure it was water / pressure tight. No problems in over a decade.
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