Halo Friends!

I need some help please.Can any off you advice the amount of oil cooling a 13B requires.
(No,allot is not a valid answer LOL)

I have the aprox size of the Stock FB cooler,but not the amount that it actually dissipates heat.

The largest one i have seen for sale (car use) so far is a 19ROW cooler.

Thanks

Karis

 

I think any of the front mount oil coolers would be efficient enough to cool the 13b. Comparing the sizes from the 1st gen and 2nd gen oil coolers, they are about the same. The main differences between them are the locations of the nipples and the mounting brackets.

 

I've seen no cooling problems when a 12A air oil cooler was used on a supercharged 13B in the stock location (under the short style rad). I plan to use a 12A air oil cooler on my NA 20B.

 

Id be cool if you used 2 FMOC's for your 20b swap. Or is that overkill?

 

Overkill. I won't make it any more complicated than it needs to be.

 

Yea,thats only really neccesary if you need more heatsoaking ability for a lowspeed or endurance type application.Plenty of guys have done it,both parallel and in-series,but its not needed 90% of the time.One 1st or 2nd gen air/oil cooler, with plenty of airflow, will keep almost any street rotary's temps in check.

Just out of prudence and a need to screw with sh*t,I added a second aux. oil cooler on my car.Its a conveniently sized unit from an 80's Turbo300ZX and its exactly the same construction as the RX-7 cooler,just half the width and without the cold bypass.They are cheap and easy to find in wrecking yards and dont have the bung cracking problems of the rotary coolers since the lines are part of the cooler.I dont have any good pics,but you can see it in the drivers side vent of my airdam.....

 

Thanks for all the replies!
Please give me a rough size i can work on?I dont have a FB to go and measure anymore,hehe

Ps:Other Rotaries section is too quiet!The oil cooler is for my 13B beetle,as i dont have access to a FB one to put on

karis

 

bump for some info please

 

i dont know what the size is but do you have a junk yard in your area go out there find a second gen and have at it it wouldnt hurt to get your hands dirty you might just find something out there you need

 

The Mazda factory oil cooler is a very efficient heat exchanger for it's size; most other makes of coolers are not as efficient.

 

Nope,i dont have access to any second hand Rotary oil coolers.

I agree they are very efficient.

So any idea?

19 Row? 35 Row 1million Row (lol)

thanks

Karis

 

I would have gone with a beehive for a VW conversion. I have one here that's been stretched 20mm to fit a 13B. If you don't use the restrictor in the upper firewall pipe, it will flow more and cool a 13B just fine. My next beehive car will not have that restrictor just to see if I really know what I'm talking about.

 

Thats a good idea,it keeps everything compact and "on" the engine.
Just make sure you use a good radiator that can take the extra thermal load that the hot oil is going to present to the coolant.
Plenty of people (myself included) bag on the beehive coolers,and for the most part,its justified.But problems related to the lesser cooling ability of the beehive usually only crop up after many,many miles and its likely worsened by neglect.If you did run a beehive cooler,then you could even some other air/oil cooler as a supplement and it wouldnt really matter the size, or # of rows since itll just be backing up the beehive.Just be sure to use an air cooler with 1/2" inlets and decent sized tubes, since it will still be "full flow" and rotaries move a lot of oil.

 

I think the M/B cooler in you're garage will be ok.
What do you think?