1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Cracked oil cooler

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Old 01-09-06, 07:36 PM
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THanx all, i order one from Atlanta RX7 today $121 shipped to MD. just need to weld on mounting brackets as he said the old ones broke off. so i just have to find someone to weld Alum. Oh yeah he said it would be here Thursday. I hope so sucks to break it the day i bought it. actually i bought it tonight and broke it yesterday! well i guess i really bought when it broke huh? LOL
not looking forward to the install and removal. messy and hard to get to. trying to decide if i do it in my driveway with a jack and stands or try to load it on my trailer and take it to the military base i work at to their hobby shop and put it on the lift. if i start the car it starts pissing oil everywhere right away. so its make a mess and have a lift or just make a mess in my drive way taking it apart. hmmmm sound like i will try for the garage on base. have to put on new rotors as well.

just wanted to put that on here..LOL
Old 01-14-06, 04:27 PM
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Originally Posted by cpa7man
Wow, I'd like to see that new $85 cooler from advanced?!?!

Also use a new crush washer when installing the lines on the cooler, and what wacky said. Napa has the crush washer, I have the part number in my tool box if u need. No one else that I could find carries it other than Mazdatrix/ISC.

As someone else said without a doubt the Mazdatrix ss hoses at $100 are the way to go.
you still go t that part number for the crush washer? can i reuse the old ones? i just got my cooler in today, saturday. took apart my rotors today had them turned instead of new ones even though i bought new ones anyway. we'll see if it passes inspection before i return new ones. bearing look good , and thats good cause autozone ordered me the wrong inside bearings. I also had time to fix my pwr windows today. going back tomorrow to take out old cooler and put rotors and brakes back on. then go get newer cooler welded right and put on car Tuesday. then should be ready for inspection I HOPE!
Old 01-16-06, 03:36 PM
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decided to go with a aftermarket cooler have it all installed but not leak chacked yet. i recieved the used cooler from Atlanta rx7 but would have to weld on new brackets, and the ones inmy car look broke on one side and not really good on the other. So i went with an aftermartket cooler. hope it works. Beside the original lines were shot too, the fittings count be turned i had to take off the long line and twist it off the cooler and then twist the cooler off the other line. so i said the hell with it and got this other cooler and rigged up dome other lines to the cut off end off the originals.

Last edited by blackjack; 01-16-06 at 03:38 PM.
Old 01-16-06, 07:46 PM
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Originally Posted by blackjack
you still go t that part number for the crush washer? can i reuse the old ones? i just got my cooler in today, saturday. took apart my rotors today had them turned instead of new ones even though i bought new ones anyway. we'll see if it passes inspection before i return new ones. bearing look good , and thats good cause autozone ordered me the wrong inside bearings. I also had time to fix my pwr windows today. going back tomorrow to take out old cooler and put rotors and brakes back on. then go get newer cooler welded right and put on car Tuesday. then should be ready for inspection I HOPE!
For those who might need the reference the Napa part # is 704-1365.

The washer goes between the lines and the block or the cooler fittings and the adaptor.
Old 01-17-06, 10:01 AM
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thanx for the info but its too late. see post above. what is the temp supposed to be? should i now install an oil temp gauge? how impotant is it to these engines? thanx
Old 01-17-06, 06:07 PM
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Originally Posted by blackjack
thanx for the info but its too late. see post above. what is the temp supposed to be? should i now install an oil temp gauge? how impotant is it to these engines? thanx
Someone else may need it.

If your going to race your car then an oil temp gauge would be needed. For street use I wouldn't bother with it.

On the track with the stock oil cooler my temps were 200-220. With the Mazdacomp cooler I was back to 180.
Old 01-17-06, 06:11 PM
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Since you went with an aftermarket cooler, I would install a temp guage. The cooler takes away about 30% of the heat load, the radiator takes the rest.
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