Race Car Tech Discuss anything related to road racing and auto X.

1st gen cooling ?'s

Old 07-03-03, 12:20 AM
  #1  
Banned. I got OWNED!!!
Thread Starter
 
christaylor's Avatar
 
Join Date: Mar 2003
Location: Austin, Texas
Posts: 1,546
Likes: 0
Received 0 Likes on 0 Posts
1st gen cooling ?'s

I'm posting this as a discussion on another BBS has centered around cooling. Specifically, what the best setup is for 81-85 RX-7s given the two setups, 1. the oil/water heat exchanger and 2. seperate oil and water coolers.

My question is that I have always heard it is better to use the radiator from the oil/water heat exchanger setup and the oil cooler from the seperate coolers setup. The reason being that in the stock seperate coolers setup the oil cooler blocks nearly 1/3 of the radiator, and haveing a bigger radiator lets more air go straight through the radiator without first going through the oil cooler. Is this true? Is it better to mix the two setups, having the bigger radiator and the oil cooler? Anybody have good tech as to why this is, other than a larger unobstructed cooling area for the water?

TIA,
Chris
christaylor is offline  
Old 07-03-03, 10:00 AM
  #2  
RX for fun
iTrader: (13)
 
Siraniko's Avatar
 
Join Date: Aug 2001
Location: Socal
Posts: 15,912
Likes: 0
Received 3 Likes on 3 Posts
Actually, there are 3 types. You missed the pre-82 style wherein the oil cooler is below the radiator. That is the short radiator. The tall radiator with oil cooler in the front is the GSL-SE.
Siraniko is offline  
Old 07-03-03, 01:14 PM
  #3  
Banned. I got OWNED!!!
Thread Starter
 
christaylor's Avatar
 
Join Date: Mar 2003
Location: Austin, Texas
Posts: 1,546
Likes: 0
Received 0 Likes on 0 Posts
Originally posted by wackyracer
Actually, there are 3 types. You missed the pre-82 style wherein the oil cooler is below the radiator. That is the short radiator. The tall radiator with oil cooler in the front is the GSL-SE.
Ahhhh, okay. I wasn't counting the GSL-SE since our rules don't let us run anything from them. But, thats good to know!
christaylor is offline  
Old 07-04-03, 02:39 PM
  #4  
Rotary Enthusiast
10 Year Member
 
rhinor61's Avatar
 
Join Date: Mar 2002
Location: California
Posts: 819
Likes: 0
Received 0 Likes on 0 Posts
Although your rules won't let you run anything from a GSL-SE, you can still copy it.
Since all '83-'85 12a/13b ran the same radiator, the tall one, then you make some simple brackets and move your 79-82 oil cooler 4 inches in front of the radiator. Have some longer oil hoses made up and you are done. By going with the tall radiator, you have little more room to add a electric fan.

John
rhinor61 is offline  
Old 07-04-03, 09:03 PM
  #5  
Open up! Search Warrant!
5 Year Member
 
Project84's Avatar
 
Join Date: May 2002
Location: Kicking down doors in a neighborhood near you
Posts: 3,838
Likes: 0
Received 0 Likes on 0 Posts
Air cools better. Its better to have air cool the oil and to have air cool the coolant. The thing Mazda tried with the coolant cooling the oil wasn't a good idea. Not as efficient as having air cool the oil. If you have a radiator with an oil cooler built in, that is fine. Most vehicles with automatic transmissions don't have a seperate oil cooler for the tranny fluid, the tranny fluid flows through a seperate chamber in the coolant radiator.
Project84 is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
kutukutu1
1st Generation Specific (1979-1985)
117
06-04-19 08:57 PM
gfd263
Megasquirt Forum
1
08-28-16 08:58 PM


Thread Tools
Search this Thread
Quick Reply: 1st gen cooling ?'s


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: