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Cracked oil cooler?

Old 02-02-19, 08:34 PM
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Cracked oil cooler?

I seem to have cracked my oil cooler when trying to seal a pesky leak from the fittings.

I cracked the upper bung, Looks like the lower bung has been repaired before.

​​​​​​​Since it has to be tanked and welded anyway, im thinking of having these AN-10 fittings welded directly to the cooler, eliminating the need for crush washers.
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Old 02-02-19, 09:21 PM
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This is a common failure. Adding the -10 bungs will help.
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Old 02-02-19, 09:36 PM
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Thanks. I figured if im having them weld on it already since its cracked, i might as well simplify the system. I dont think ill crack it again with the hoses as a direct fit.
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Old 02-03-19, 12:41 AM
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Very interested in how that goes.

Most SE owners can commiserate with you on this, so watching to see how well it works and how much itll cost. Thanks,
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Old 02-04-19, 08:25 AM
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I'm guessing this is why the new coolers come with the fittings installed with some sort of plastic sealant?
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Old 02-04-19, 01:53 PM
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The plastic glued fittings are for the stock hoses. I am eliminating the adapting fittings, by having the -10 AN bungs welded right to the cooler, that way my steel braid lines will hook directly to the cooler. A new cooler would be nice, but OEM coolers for the FB are gone, very expensive if you can find one, and I dont trust the eBay coolers.
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Old 02-06-19, 06:19 PM
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Check out the cx racing cooler. Lots of people have had good luck with them.
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Old 02-07-19, 08:34 AM
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Welding on the aluminum bung works great. I have done it on two coolers and have raced for at least 10 years with them. The cooler does need to be clean though around the bung so that the welding is successful. Oil on the inside (or around) the bung will make welding difficult.
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Old 02-07-19, 11:14 AM
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Originally Posted by mikey D View Post
Check out the cx racing cooler. Lots of people have had good luck with them.
That's the one people have reported wasn't welded properly. The baffle between feed and return wasn't done on several that I saw which allowed oil to bypass the cooler. They may have fixed it since then, but buyer beware is all.
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Old 02-09-19, 07:28 PM
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Uh Oh...

I already ordered the CX racing cooler after seeing that it comes with 10AN bungs welded to the cooler. I bought the new one thinking it would be better than running all over town trying to get the old cooler fixed. I am trying to make an autocross race on the 24th, so if there is an issue with this new one, I might not have enough time to have it fixed... I hope they fixed it.
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Old 02-09-19, 08:08 PM
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You have to be careful because none of the aftermarket coolers have internal thermostats. Do you plan on adding one?.
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Old 02-09-19, 08:24 PM
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I know most of them dont, this one looks like it might come with thermostat provisions, either that or is just a drain. No, I wasnt planning on adding a thermostat, i figured id add an oil temp gauge, but up here in CA its pretty warm most of the time, I understand itll take longer for the oil to warmup when its a cold start. Running without a thermostat is (I assume) a bigger deal in a colder climate where it doesnt warm up
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Old 02-09-19, 09:03 PM
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Thermostat, or Drain?


Theres a threaded bung where the cooler hardware goes. It looks to be either the thermostat, or a drain.
​​​​​​​
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Old 02-11-19, 03:55 PM
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Cooler looks to be good

I recieved the cooler today, I put my eye on the fitting and shined a flashligj in the other side to see if i could see light,(light would equal leak) no light leaks, so it would appear the baffles are welded well. The 3rd bung is just a drain plug. The hoses they sent me arent built properly though, im hesistant to run them the way they came out of box.



​​​​​​​
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Old 02-12-19, 08:36 AM
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Hmm, I was always taught not to tighten the fittings completely, but to leave a little gap like the first...although I don't leave that much gap. Mostly because I like having it line up. I doubt those will leak though.

One thing I noticed about the cooler you received is that the fittings are straight, while the factory unit they are angled as to allow clearance with the sway bar.

Factory cooler installed for reference...
Cracked oil cooler?-photo468.jpg
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