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

12a Cooling system routing

Thread Tools
 
Search this Thread
 
Old Jul 7, 2011 | 02:24 PM
  #1  
DiscoQuinn's Avatar
Thread Starter
Beater King
Tenured Member 10 Years
 
Joined: Aug 2005
Posts: 313
Likes: 0
From: Victoria BC
12a Cooling system routing

I'm panicking to get my rotary Corolla finished for racing tomorrow. I cannot for the life of me find a cooling system routing diagram.

I've got an FD rad in the car, I'm not running a heater core, but I do have the stock 12a water fed oil cooler. The FD rad has an upper and lower main outlets, but on the lower one, there is a secondary smaller outlet that I believe runs to the oil cooler. I am unsure how how to route this to ensure nice cool water is helping reduce oil temps.

Any help ASAP would be great! Hopefully someone has a diagram.
Reply
Old Jul 7, 2011 | 02:57 PM
  #2  
RX-7 Chris's Avatar
Rotary Freak
iTrader: (19)
 
Joined: Oct 2007
Posts: 2,014
Likes: 0
From: Colorado Springs, CO
the smaller outlet goes to a metal line, than splits to the heater core and oil cooler. So you need to just go from the small outlet to the top of the oil cooler than from the bottom of the oil cooler to the motor.
Reply
Old Jul 7, 2011 | 03:10 PM
  #3  
DiscoQuinn's Avatar
Thread Starter
Beater King
Tenured Member 10 Years
 
Joined: Aug 2005
Posts: 313
Likes: 0
From: Victoria BC
So the smaller secondary outlet from the bottom of the rad splits running one hose to the top or bottom of the oil cooler? And the other hose to where? The T joint on the block?
Reply
Old Jul 7, 2011 | 03:31 PM
  #4  
ztfdrake61's Avatar
In Love with a GS
 
Joined: May 2009
Posts: 171
Likes: 0
From: Mid Northern Indiana
The small secondary outlet from the rad goes to the top of the beehive oil cooler. The bottom of the beehive oil cooler connects to a "T" on the engine block just below it. The large lower outlet from the rad connects to the front cover of the engine block
Reply
Old Jul 7, 2011 | 03:46 PM
  #5  
j9fd3s's Avatar
Moderator
Community Builder
Liked
Loved
Community Favorite
iTrader: (3)
 
Joined: Mar 2001
Posts: 31,833
Likes: 3,232
From: https://www2.mazda.com/en/100th/
just to try another stab at this, the previous people are right, but just to say it a different way might help.

on a stock 12A the coolant comes out of the back of the engine and T's off. half goes to the cooler and half goes to the heater, then they both T back in and end up at the bottom of the radiator.

if you have no heater, you can go from the rear of the engine, to the cooler to the lower radiator/lower radiator hose.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
SakeBomb Garage
SakeBomb Garage
9
May 11, 2020 10:04 AM
Ian_D
Single Turbo RX-7's
25
Oct 14, 2015 12:31 PM
bryancmatthews
Power FC Forum
14
Oct 5, 2015 08:49 PM
ZaqAtaq
New Member RX-7 Technical
2
Sep 5, 2015 08:57 PM




All times are GMT -5. The time now is 09:40 PM.