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Post by moroza on Oct 3, 2014 21:51:21 GMT -5
It appears that the oil cooler on an 82 Mazda is leaking. I replaced the copper rings at the banjo bolts, and at this point I suspect that the cooler core itself is cracked. I can't be sure because it's covered in crud. Three questions:
1. Is it necessary, or can I just rout its send and return lines to each other?
2. Does anyone know where to get an original one and for how much?
3. Has anyone replaced theirs with an aftermarket piece?
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Post by 83rangerguy on Oct 4, 2014 12:37:51 GMT -5
I checked Rockauto.com didn't see one listed...
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Post by jride200 on Oct 5, 2014 21:27:28 GMT -5
It appears that the oil cooler on an 82 Mazda is leaking. I replaced the copper rings at the banjo bolts, and at this point I suspect that the cooler core itself is cracked. I can't be sure because it's covered in crud. Three questions: 1. Is it necessary, or can I just rout its send and return lines to each other? 2. Does anyone know where to get an original one and for how much? 3. Has anyone replaced theirs with an aftermarket piece? #1- Interesting question, that I don't think anyone will be able to tell you for sure. Is there an advisable oil temp range or a max published in the FSM? I don't remember and do not have my FSM currently available. If so, you could always plumb it that way, install an oil temp gauge (I'd recommend somewhere as close to possible to the oil pump discharge.), drive it, and observe. If you do this, please let us know your findings. It could help others. #2- I could only imagine finding this part in a salvage yard, but perhaps an OEM one could be found through Mazda domestic or international. It may be expensive. With salvage yards, it may require a nation-wide search with numerous phone calls. I think I actually have one myself, but, like my FSM, it's not currently available to me. #3- Another interesting question, and a good one since salvage yard coolers all may be in rather poor condition. (Cooler is in a vulnerable spot.) #3A- Find a cooler intended for another application that is of similar physical size? The combined surface area of all cooling fins is probably the most important thing to compare. #3B- Find a cooler intended for another application that has a "vernatherm"? (a temperature-sensitive valve that regulates oil temp by controlling oil flow through the cooler) I do not think our oil coolers have this, and it may not even be in any automotive application or may go by another name. I don't honestly know. Vernatherms are, however, commonplace in reciprocating aircraft engines. If you could find such a cooler, preferably intended for a larger engine application, and then check/adjust that the vernatherm is in agreement with what is appropriate for our engines, you might be good to go. Being intended for a larger engine application, the cooler should always be able to "keep up" with the heat transferred to our oil while the vernatherm would simultaneously ensure that oil temp. meets some minimum to drive out moisture, etc. |
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Post by jrcush on Jan 30, 2015 1:17:13 GMT -5
I bought an aftermarket one from eBay. It fit the old brackets and I had braided stainless hoses made at the local Hose Man.
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Post by moroza on Feb 19, 2015 19:14:12 GMT -5
jrcrush, can you post more specifics? Brand and part number of the cooler, and how much you had to pay for hoses?
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Post by jrcush on Feb 21, 2015 12:43:56 GMT -5
I can't find the one I ordered in my history but this one is similar. link Just double check the size of the one you have. The hoses were under $100 I don't recall exact numbers but I had custom end braided stainless steel ones made to protect them. |
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Post by gradyc on Feb 21, 2015 13:24:28 GMT -5
The link that is in your post just returns back to this page.
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Post by jrcush on Feb 22, 2015 23:30:53 GMT -5
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Post by tempforce on Feb 25, 2015 11:47:12 GMT -5
if all else fails, use a a/c condenser as a oil cooler.
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