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-   -   323 - Oil in radiator (https://www.mazdaforum.com/forum/general-tech-6/323-oil-radiator-30999/)

spendril 02-03-2013 04:54 PM

323 - Oil in radiator
 
Have 1991 323 - 191000 Km; lots of brown goop top of radiator, smells of oil; question: how to determine if fixable versus putting in used motor versus selling 'as is'?

Thanks

UseYourNoggin 02-03-2013 05:16 PM

191,000 km? 1991!
I'd sell 'er and buy wine!
Wouldn't trust the rest of the car, unless you do a serious makeover with something worthwhile under the hood and make it a sleeper!

Mishimoto 02-04-2013 09:52 AM

I agree with the poster above. What are your intentions with the 323? I believe several DOHC motors will swap into this chassis with little effort.

Could be a neat little car. Any other issues you can see right away? How is the paint and interior?

Thanks
:)

BogusSVO 02-04-2013 10:25 AM

If you have oil in the rad, but no water in the oil you have a fun issue to fix.

It means you have an high pressure oil leak into a low pressure coolant.

The rad cap set the pressure of the coolant system, so max pressure is 13-16 psi, depending on the cap.

Warm oil pressure at idle is about 20 psi, and oil pressure increase with engine RPM to around 50-60psi, depending on oil weight, oil temp, and oil bypass spring rate.

Brown goop on a rad cap can also mean someone tried to do a cheap repair with stop leak, to try to fix a leaky seal, gasket, rad or heater core, or head gasket.

spendril 02-04-2013 07:50 PM

Thanks all for that. Had a mobile mechanic out and he was of the opinion that it was more likely stop leak.

Have another issue - no spark but will post that as new thread.

Thanks a lot for the great information.


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