3rd Gen General Discussion The place for non-technical discussion about 3rd Gen RX-7s or if there's no better place for your topic

FD Operating Parameters

Thread Tools
 
Search this Thread
 
Old 05-27-16, 08:47 AM
  #1  
It Just Feels Right

Thread Starter
iTrader: (11)
 
TomU's Avatar
 
Join Date: Feb 2014
Location: Arlington, VA
Posts: 2,238
Received 346 Likes on 257 Posts
FD Operating Parameters (Temps/Press/IAT/Etc)

I have read the desired parameters in serval threads/websites/FSM, but can’t find any compressive site that lists them all for easy reference, so am compiling them. Understand some may be dependent on specific situations, so please add/comment…

Fuel Pressure: 30 psi at idle to 40+ psi at boost (depending on how much boost)*
*FSM states fuel pressure should test between 71-106 psi (490-740 kPa), F-100
Oil Pressure: 20-40 psi at idle to 110 PSI max
Oil Temp: NTE 205F/96C
Water Temp: NTE 185F/85C
IAT: ?
EGT: ?

Compression:
- Normal compression: 110-150 PSI
- Minimum: 75 PSI
- Maximum acceptable pressure difference between chambers: 20 PSI

Last edited by TomU; 05-27-16 at 12:58 PM.
Old 05-27-16, 12:22 PM
  #2  
Urban Combat Vet

iTrader: (16)
 
Sgtblue's Avatar
 
Join Date: Oct 2003
Location: Mid-west
Posts: 12,012
Received 862 Likes on 611 Posts
IIRC FSM dictates 50 psi oil pressure (minimum) at 3000 rpm and operating temps.
Old 05-27-16, 08:09 PM
  #3  
Moderator

iTrader: (3)
 
j9fd3s's Avatar
 
Join Date: Mar 2001
Location: https://www2.mazda.com/en/100th/
Posts: 30,796
Received 2,574 Likes on 1,830 Posts
water temp should be a little higher too. thermostat only starts opening at 82c, fans come on at 105c (i think)

intake air temp is usually in the 38-42c range.

IAT, is about 500c at idle, and will got to about 700c peak. the EGT's are dictated by the cat, which wants to see about 450c to work, and melts over 650c
Old 06-02-16, 07:56 PM
  #4  
Full Member

 
msilvia's Avatar
 
Join Date: Sep 2006
Location: DC Metro
Posts: 237
Received 6 Likes on 4 Posts
Originally Posted by j9fd3s
intake air temp is usually in the 38-42c range.
Great thread idea.

For this IAT range, are you going by personal experience or is this a Mazda-spec'd range somewhere. This number will probably vary a good bit with climate but I'd be interested to know if there's an official spec for what's too high.
Old 06-02-16, 10:15 PM
  #5  
Full Member

iTrader: (1)
 
almcbs's Avatar
 
Join Date: Jan 2006
Location: Alexandria, VA
Posts: 101
Received 5 Likes on 4 Posts
i was actually trying to get this exact list together when i found this thread lol. Thank you
Old 06-05-16, 11:33 AM
  #6  
Moderator

iTrader: (3)
 
j9fd3s's Avatar
 
Join Date: Mar 2001
Location: https://www2.mazda.com/en/100th/
Posts: 30,796
Received 2,574 Likes on 1,830 Posts
Originally Posted by msilvia
Great thread idea.

For this IAT range, are you going by personal experience or is this a Mazda-spec'd range somewhere. This number will probably vary a good bit with climate but I'd be interested to know if there's an official spec for what's too high.
if you plug a power FC in, you can see the temp, and it just pretty much stays there give or take.
Old 06-07-16, 03:04 PM
  #7  
It Just Feels Right

Thread Starter
iTrader: (11)
 
TomU's Avatar
 
Join Date: Feb 2014
Location: Arlington, VA
Posts: 2,238
Received 346 Likes on 257 Posts
Originally Posted by Sgtblue
IIRC FSM dictates 50 psi oil pressure (minimum) at 3000 rpm and operating temps.
Not saying it's right, just saying that's what it's saying...




From what I've read, seems recommended FP is ~30 at idle to 40+ at boost (at roughly 1 psi FP for 1 psi boost)
Old 06-07-16, 03:09 PM
  #8  
Urban Combat Vet

iTrader: (16)
 
Sgtblue's Avatar
 
Join Date: Oct 2003
Location: Mid-west
Posts: 12,012
Received 862 Likes on 611 Posts
^You're talking fuel pressure. I'm talking oil pressure. Just sayin'....

Last edited by Sgtblue; 06-07-16 at 03:11 PM.
Old 06-07-16, 03:16 PM
  #9  
It Just Feels Right

Thread Starter
iTrader: (11)
 
TomU's Avatar
 
Join Date: Feb 2014
Location: Arlington, VA
Posts: 2,238
Received 346 Likes on 257 Posts
Originally Posted by Sgtblue
^You're talking fuel pressure. I'm talking oil pressure. Just sayin'....
Gotcha
Old 06-07-16, 03:18 PM
  #10  
It Just Feels Right

Thread Starter
iTrader: (11)
 
TomU's Avatar
 
Join Date: Feb 2014
Location: Arlington, VA
Posts: 2,238
Received 346 Likes on 257 Posts
Note, this is for stock setup.

Update from info so far...

Fuel Pressure: 30 psi at idle to 40+ psi at boost (at ~1 psi fuel per 1 psi boost)
Oil Pressure: 20-40 psi at idle to 110 PSI max (Racing Beat)
Oil Temp: NTE 205F/96C (Racing Beat)
Water Temp: 200F/95C-225F/108C (https://www.rx7club.com/3rd-generati...thread-571088/)
IAT: 100F/38C-110/43C
EGT: 930F/500C-1200F/650C

Compression:
- Normal compression: 110-150 PSI
- Minimum: 75 PSI
- Maximum acceptable pressure difference between chambers: 20 PSI
Old 06-07-16, 03:33 PM
  #11  
Urban Combat Vet

iTrader: (16)
 
Sgtblue's Avatar
 
Join Date: Oct 2003
Location: Mid-west
Posts: 12,012
Received 862 Likes on 611 Posts
FSM Page D-5
Oil pressure Minimum 50 psi @ 3000 rpm and operating temp.
Old 02-24-18, 01:33 PM
  #12  
Junior Member
 
hichamaziz's Avatar
 
Join Date: Feb 2018
Location: casablanca
Posts: 13
Likes: 0
Received 0 Likes on 0 Posts
it must be an electrical problem
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
RotaryTom
3rd Generation Specific (1993-2002)
10
05-11-16 08:42 PM
jfirko
3rd Gen General Discussion
2
04-11-16 02:41 PM
JT85RX7
General Rotary Tech Support
2
04-05-16 06:33 PM
caredden
3rd Generation Specific (1993-2002)
7
03-30-16 11:49 AM



Quick Reply: FD Operating Parameters



All times are GMT -5. The time now is 05:33 AM.