jon Posted January 11, 2021 Share Posted January 11, 2021 1976 2002 with the 320 radiator Coolant is dripping along the line between the plastic top and the core. Can this leak be repaired or will the radiator need replacement? Quote Link to comment Share on other sites More sharing options...
John76 Posted January 11, 2021 Share Posted January 11, 2021 Try JB Weld. It's right up there as a favorite next to Duct Tape. 1 Quote Link to comment Share on other sites More sharing options...
Son of Marty Posted January 11, 2021 Share Posted January 11, 2021 I'll second the jb weld other wise there's no repair other than replacment. 1 Quote Link to comment Share on other sites More sharing options...
Einspritz Posted January 11, 2021 Share Posted January 11, 2021 I like JBweld, but two things, one is that you have two different materials with different coefficients of expansion and you will have to clean both sides making sure ALL the coolant is gone as otherwise it won't stick. Generally, repair is by replacement, unless you want to go the leak stop route. 1 Quote Link to comment Share on other sites More sharing options...
Administrators steve k. Posted January 11, 2021 Administrators Share Posted January 11, 2021 unfortunately these radiators are not serviceable. Steve 1 Quote Link to comment Share on other sites More sharing options...
layers Posted January 11, 2021 Share Posted January 11, 2021 Hi Jon-- I had a 320i radiator in my late '73. One time I had a radiator shop remove the top, rod out the core, then carefully replace the top;; it worked fine afterwards. If I were you I would discuss repair with a local radiator shop to see if they will guarantee a repair. Larry 1 Quote Link to comment Share on other sites More sharing options...
Mike Self Posted January 11, 2021 Share Posted January 11, 2021 4 minutes ago, layers said: If I were you I would discuss repair with a local radiator shop to see if they will guarantee a repair. +1 Some years ago our Acura Legend had a similar leak--turned out to be a cracked upper tank--a faulty design that was replaced under warranty. A local shop removed the old upper tank and installed the new design. Tank and core were sealed with a rubber gasket and then crimped together. The local shop did the work very well. And that was back around 1993--never leaked again--and we sold it in 2007. So they can be repaired. And FYI, you can buy brass E21 radiators, as well as replacement high capacity 2002 radiators... mike 1 Quote Link to comment Share on other sites More sharing options...
Einspritz Posted January 11, 2021 Share Posted January 11, 2021 And that begs the question, why do you need a 320i radiator when the stock unit plus a tropical fan and a proper thermostat will do equally well? 1 Quote Link to comment Share on other sites More sharing options...
AustrianVespaGuy Posted January 11, 2021 Share Posted January 11, 2021 1 hour ago, Einspritz said: And that begs the question, why do you need a 320i radiator when the stock unit plus a tropical fan and a proper thermostat will do equally well? I'm sure it's not a *need* but I'd bet 320i replacements are a whole lot cheaper/easier to find than stock replacements these days, no? And while it's true they're *technically* not serviceable, you're always welcome to give it a try anyway. All you need to do is take a screwdriver to unbend all those little crimp fingers that hold the tank onto the core. Underneath the bottom lip of the tank is a big rectangular gasket. Once you're in there you can try to determine if the leak is in the actual core (small crack where a vertical tube is brazed to the horizontal 'header,' or if it looks like the leak was past that rubber gasket. Then it's just a matter of soldering the hole (if present), making sure the gasket is in good condition, putting it back in its groove, putting the tank back on, and then having something to press it down pretty hard to compress the gasket while you bend the fingers back into place. I'd say probably not worth the effort, but I'd never discourage someone from at least attempting a repair before throwing money at a replacement! 1 Quote Link to comment Share on other sites More sharing options...
m42002 Posted January 11, 2021 Share Posted January 11, 2021 8 minutes ago, AustrianVespaGuy said: ...but I'd never discourage someone from at least attempting a repair before throwing money at a replacement! This makes me smile. Pretty much my theory of repair also. Ya learns sooo much this way😃 1 Quote Link to comment Share on other sites More sharing options...
jimk Posted January 11, 2021 Share Posted January 11, 2021 50 minutes ago, AustrianVespaGuy said: and then having something to press it down pretty hard to compress the gasket while you bend the fingers back into place. If you have the clamps or a friend that is a woodworker, the long clamps they use would work to clamp. Quote Link to comment Share on other sites More sharing options...
Mark92131 Posted January 11, 2021 Share Posted January 11, 2021 Replacement in the Parts for Sale section. Not pretty, but doesn't leak according to @calw Mark92131 Quote Link to comment Share on other sites More sharing options...
Shawn Piper Posted January 11, 2021 Share Posted January 11, 2021 Take it to a shop and have it inspected. If they cant repair it for a decent price then I would look for a nice used one or buy new one ($300-500). Quote Link to comment Share on other sites More sharing options...
John_in_VA Posted January 12, 2021 Share Posted January 12, 2021 Talk to Chris Isaacs / "Stone" in Phila - he'll know who can fix it & probably have one for you if it can't be repaired. https://www.bmw2002faq.com/profile/35384-stone02/ https://www.facebook.com/StoneRacingCo stoneracingcompany@gmail.com Quote Link to comment Share on other sites More sharing options...
2002iii Posted January 12, 2021 Share Posted January 12, 2021 I put one of the 320i plastic tank and aluminum core radiators in my 2002, it failed spectacularly as I rolled into a car show because the fan hit the bottom of the radiator and cut into one of the tubes when I went over a speed bump. I finally bit the bullet and bought this to replace it instead of spending another $100 for a used radiator. I've had other bad experiences with bmw plastic radiator end tanks. Plastic and hot coolant dont work well together, but they're cheap to manufacture and guarentee more parts sales meaning more money. Quote Link to comment Share on other sites More sharing options...
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