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

why?

Thread Tools
 
Search this Thread
 
Old May 14, 2010 | 07:26 PM
  #1  
tookey bird's Avatar
Thread Starter
tookey bird
iTrader: (1)
 
Joined: Jun 2009
Posts: 80
Likes: 0
From: lemoore CA
why?

why is it that from 83 and up there are no oil coolers made for a 12a engine..just curious to know..fyi still learning about this car
Reply
Old May 14, 2010 | 07:51 PM
  #2  
PercentSevenC's Avatar
I need a new user title
Tenured Member 10 Years
 
Joined: Oct 2005
Posts: 2,646
Likes: 1
From: Yaizu, Japan
'83-85 12As had what is commonly referred to as the "beehive" oil cooler. It is located under the oil filter and uses the engine coolant to cool the oil. They're not as effective as the front-mount air-oil coolers that earlier 12As had, and are prone to leaking, but they were probably cheaper for Mazda to produce. You can install the oil cooler, lines, and radiator from an earlier 12A car if you want.
Reply
Old May 16, 2010 | 01:29 AM
  #3  
tookey bird's Avatar
Thread Starter
tookey bird
iTrader: (1)
 
Joined: Jun 2009
Posts: 80
Likes: 0
From: lemoore CA
ooo interesting that makes sense thank you
Reply
Old May 16, 2010 | 11:58 AM
  #4  
mazdaverx713b's Avatar
Have RX-7, will restore
Veteran: Army
Tenured Member: 20 Years
Loved
Community Favorite
iTrader: (91)
 
Joined: Oct 2003
Posts: 22,577
Likes: 1,273
From: Ohio
the 84-85's have the oil cooler mounting locations already in place in front of the radiator and have nuts tacked to the mounts for the installation of a front mount oil cooler. mazda did this because the 84-85 GSL-SE's had a front mount oil cooler and they made all of the X-7 bodies identical. all 84-85 12A RX-7's can be retrofitted with the front mount oil cooler and you can use the radiator that came with the 84-85 7's and use an SE oil cooler.
Reply
Old May 16, 2010 | 12:15 PM
  #5  
rxtasy3's Avatar
Moderator
Tenured Member: 20 Years
iTrader: (2)
 
Joined: Jun 2002
Posts: 9,579
Likes: 290
From: Spartanburg, SC
some ppl use FC oil coolers.
Reply
Old May 16, 2010 | 12:50 PM
  #6  
KansasCityREPU's Avatar
Out In the Barn
Tenured Member: 20 Years
Liked
Loved
Community Favorite
iTrader: (9)
 
Joined: Mar 2005
Posts: 6,702
Likes: 1,250
From: KC
Originally Posted by mazdaverx713b
the 84-85's have the oil cooler mounting locations already in place in front of the radiator and have nuts tacked to the mounts for the installation of a front mount oil cooler. Mazda did this because the 84-85 GSL-SE's had a front mount oil cooler and they made all of the X-7 bodies identical. all 84-85 12A RX-7's can be retrofitted with the front mount oil cooler and you can use the radiator that came with the 84-85 7's and use an SE oil cooler.
The one exception of the bodies being identical as far as I know are the transmission cross member mounts between the manual and automatic.
Reply
Old May 16, 2010 | 03:04 PM
  #7  
mazdaverx713b's Avatar
Have RX-7, will restore
Veteran: Army
Tenured Member: 20 Years
Loved
Community Favorite
iTrader: (91)
 
Joined: Oct 2003
Posts: 22,577
Likes: 1,273
From: Ohio
^^thats exactly spot on. teh auto trans mounting points are actually a few inches towards the rear of the car. good catch! i have an auto to manual convesion in a GSL that i did, sitting in my garage as we speak!
Reply
Old May 16, 2010 | 03:54 PM
  #8  
peejay's Avatar
Old [Sch|F]ool
Tenured Member: 20 Years
Liked
Loved
Community Favorite
 
Joined: May 2001
Posts: 12,856
Likes: 568
From: Cleveland, Ohio, USA
My early-build '84 (it had the 3.933 final drive!) appears to have both mounting points in the floorpan.

I don't remember if my '85 did, anymore.

I've never seen an automatic 1st-gen, but I'd imagine that the 3-speed units could use the same mounting point, and the 4-speed could not because the overdrive was just sandwiched in between the pump and the rest of the geartrain, making the whole thing longer.
Reply
Old May 16, 2010 | 09:07 PM
  #9  
mazdaverx713b's Avatar
Have RX-7, will restore
Veteran: Army
Tenured Member: 20 Years
Loved
Community Favorite
iTrader: (91)
 
Joined: Oct 2003
Posts: 22,577
Likes: 1,273
From: Ohio
pete, i once had an early build 84 SE that had both trans mounting points. i've never seen another one and wasn't sure if it was stock or not..now that i know that it wasnt modified then i think it to be rather scarce...
Reply




All times are GMT -5. The time now is 07:08 PM.