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Discussion Starter · #1 ·
Hi Gang,

A couple of years ago I went to a local Volvo specialist for a few things, including new IPD (the blue silicone) hoses. On my way home, it blew at the top nipple. Upon inspection he had crushed it by overtightening the clamp. He tried to get out of it by blaming the radiator's age, but it had been replaced recently. Then he said the IPD silicone hoses are too hard to put on. I bought a new radiator, they R&R'd it for free. I've driven 20k miles and it started leaking at the bottom nipple. I pulled the hose and saw that the lip had been dimpled. I'm guessing to make it fit. The bottom plastic guard is on, so I don't know how it could have been a road hazard, especially through that tough hose. I added a second clamp and it held up for a few months but it's leaking again and slipping off. Do you think I could replace the hose with rubber and it would stay/seal better, or replace the 20k mile old radiator again? Any ideas on another solution? Thank you for any input!!!!

I tried to add a pic but it seems I can only add something from the internet.
 

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Discussion Starter · #2 ·
Ok, so I have done some homework and I am going to try JB Weld. I haven't decided which is the best for the job of rebuilding the lip. Can anyone recommend between KwikWeld, Water Weld, or Radiator Weld? I know it seems Radiator is the logical choice, but the other two are also recommended. Thanks.
 

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Silicon hoses are more slippery than normal ones and also don’t tend to set round the pipes so easy, so have more of a tendency to come off. Other than looks , I would stick to Volvo rubber hoses for the coolant system. Even if you need to change them every 10 years or so, through I see plenty of older ones as long as you don’t soak them in oil. Unless your car is a track car with a higher pressure coolant system.
 

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Discussion Starter · #4 ·
Thanks Roger. I wish the mechanic had mentioned how overkill they were before putting them on. I did replace with rubber, AND, I reworked the nipple with some epoxy. Hose stays on and is not leaking, but I picked up a leak somewhere else. Good times.
 

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Thanks for the feed back.
Hopefully you will find your other leak soon.
 

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Discussion Starter · #6 ·
Thanks again, Roger. I can't find the leak. The fill tank will drop a few cups, then be fine for a few hundred miles. Then I will fill it, and have to refill it after 20 miles. Sporadic things twist my melon. Any ideas on how to track a small leak down?
 

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Silicon hoses are more slippery than normal ones and also don’t tend to set round the pipes so easy, so have more of a tendency to come off. Other than looks , I would stick to Volvo rubber hoses for the coolant system. Even if you need to change them every 10 years or so, through I see plenty of older ones as long as you don’t soak them in oil. Unless your car is a track car with a higher pressure coolant system.
While doing a transfer case replacement, I notice my new Volvo turbo is leaking, apparently from the oil return line. Heck... Had the gasket replaced. In two days there was a droplet sitting on the turbo again. Traced the leak better this time and it turned out the small silicone hose that connects turbo to over the engine pipe is not fully tight and allows oil to sip. Will be replacing it with the rubber hose soon.

Front silicone hose is leaking, too.
 
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