Go Back  RX7Club.com - Mazda RX7 Forum > Tech and Performance > Race Car Tech
Reload this Page >

Need some help identifying oil pressure problem

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

Need some help identifying oil pressure problem

Old 08-18-06, 02:30 PM
  #1  
Rotary Enthusiast
10 Year Member
Thread Starter
 
jantore's Avatar
 
Join Date: May 2003
Location: Norway
Posts: 904
Likes: 0
Received 1 Like on 1 Post
Need some help identifying oil pressure problem

Ok here is the deal. Normaly i have 60 psi of pressure at idle wich is about 1500 rpm. When i reach 3200 rpm i have 120 psi of oil presure. We have shimsed the rear oil presure valve so that it will increase the presure.


Now the thing is. I was at a race track today and noticed that i only had about 45 psi of oil pressure above 3000 rpm. At idle it's about 17 psi. It goes up to about 60 psi when the engine oil is cold and i rev it to 4500 rpm. I have a aftermarket gause. And we tested with a analoge gauge as well in the same place the greddy gauge is. It shoved the same pressure.

There is enough oil in the car.

Im hoping someone could come up with some ideas. Im gonna check the oil pressure regulator in the front and the back. And im gonna check the oring between the front housing and the front. And the pickup to see if anything is loose.

Could this happen if there have happend somthing to the oil filter? Im running AGIP 10-60 Synthetic oil.

Oh and the oil temp is strange too. When just cruising the temp goes up to about 90 degreese celcius and then when the thermostat opens it drops to 50 and then slowly goes up again and does the same thing. So could this have anything to do with it?

Help would be apriciated. Im thinking about leaving it like this untill the car is in Dallas. But the car needs to be driven on and off the boats to get it from norway to the US. So i need to try and fix it.

JT
jantore is offline  
Old 08-18-06, 02:43 PM
  #2  
Rotary Enthusiast
iTrader: (1)
 
Join Date: Jul 2004
Location: Rocket City, Alabama
Posts: 1,035
Likes: 0
Received 1 Like on 1 Post
Change the oil filter before you tear everything else down - see if it could be stopped up.

Did someone mess around with your oil cooler's thermostat?
speedturn is offline  
Old 08-18-06, 04:47 PM
  #3  
Rotary Enthusiast
10 Year Member
Thread Starter
 
jantore's Avatar
 
Join Date: May 2003
Location: Norway
Posts: 904
Likes: 0
Received 1 Like on 1 Post
Nothing has been done to the car since the oil presure was fine. And im the only one working on it. So no

JT
jantore is offline  
Old 08-22-06, 11:33 PM
  #4  
Senior Member
5 Year Member
 
wlfpkrcn's Avatar
 
Join Date: Jul 2005
Location: CA
Posts: 305
Likes: 0
Received 0 Likes on 0 Posts
Plugged oil cooler or blown out oring in the front housing. Just a guess...Bypass the oil cooler completely and see if the pressure goes up

E
wlfpkrcn is offline  
Old 08-23-06, 02:14 PM
  #5  
Rotary Enthusiast
10 Year Member
Thread Starter
 
jantore's Avatar
 
Join Date: May 2003
Location: Norway
Posts: 904
Likes: 0
Received 1 Like on 1 Post
Well fixed it. Not gonna say what but eh. My fault for it happening. Somthing was missing. But it was an easy fix.

JT
jantore is offline  
Old 08-30-06, 09:48 AM
  #6  
Eats, Sleeps, Dreams Rotary
10 Year Member
iTrader: (13)
 
jamespond24's Avatar
 
Join Date: Aug 2002
Location: Pittsburg, KS.
Posts: 4,152
Likes: 0
Received 0 Likes on 0 Posts
Why don't you post what did you fix incase somebody had the same problem and don't know how to fix it?
jamespond24 is offline  
Old 08-31-06, 05:26 PM
  #7  
Rotary Enthusiast
10 Year Member
Thread Starter
 
jantore's Avatar
 
Join Date: May 2003
Location: Norway
Posts: 904
Likes: 0
Received 1 Like on 1 Post
Originally Posted by jamespond24
Why don't you post what did you fix incase somebody had the same problem and don't know how to fix it?

Eh it's too embaresing to say. All i can say is i forgot to put somthing in. When i esembaled the engine the last time. And a seal broke. Iv'e done about 16 engines now, and this is the first time.

Ok it was the white o-ring that is between the front housing and the front cover. So i blew out the gasket that was around the white o-ring

JT
jantore is offline  
Old 08-31-06, 05:39 PM
  #8  
Rotary Enthusiast
10 Year Member
 
Join Date: Apr 2001
Location: North Hollywood, Ca USA
Posts: 1,289
Likes: 0
Received 0 Likes on 0 Posts
it has happened to us all. good thing you caught it before it was damaged.
tims is offline  
Old 08-31-06, 11:51 PM
  #9  
Eats, Sleeps, Dreams Rotary
10 Year Member
iTrader: (13)
 
jamespond24's Avatar
 
Join Date: Aug 2002
Location: Pittsburg, KS.
Posts: 4,152
Likes: 0
Received 0 Likes on 0 Posts
That makes me wonder about my low oil pressure? I blame it on the oil sender since it's been happening ever since I had the car plus 3 rebuilt and it's still the same.
jamespond24 is offline  
Old 09-01-06, 04:29 AM
  #10  
Rotary Enthusiast
10 Year Member
 
Poweraxel's Avatar
 
Join Date: Feb 2001
Location: In the Sky
Posts: 1,190
Likes: 0
Received 0 Likes on 0 Posts
Thats the number 1 source of low oil pressure problems on rotaries. If you ran the car for much longer or harder you would of at least taken out a front or rear bearing






Originally Posted by jantore

Ok it was the white o-ring that is between the front housing and the front cover. So i blew out the gasket that was around the white o-ring

JT
Poweraxel is offline  
Old 09-01-06, 11:29 PM
  #11  
Eats, Sleeps, Dreams Rotary
10 Year Member
iTrader: (13)
 
jamespond24's Avatar
 
Join Date: Aug 2002
Location: Pittsburg, KS.
Posts: 4,152
Likes: 0
Received 0 Likes on 0 Posts
So what else causes low oil pressure? I thought bad oil sender too that is why I don't worry about it.
jamespond24 is offline  
Old 09-02-06, 02:53 AM
  #12  
Kim
OBEY YOUR MAZDA
 
Kim's Avatar
 
Join Date: Oct 2002
Location: Denmark
Posts: 3,059
Likes: 0
Received 0 Likes on 0 Posts
^
Excessive bearing wear
Bad oilpump
Thin oil
E-shaft weberjet mod
and lots more
Kim is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
stickmantijuana
Microtech
30
04-23-16 06:37 PM
Snoopy FD
Build Threads
25
12-08-15 01:45 PM
andyvideopro
General Rotary Tech Support
3
08-20-15 10:55 AM


Thread Tools
Search this Thread
Quick Reply: Need some help identifying oil pressure problem


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: