low oil press problems at idle

DriftingFC · 06-11-2008, 09:20 PM

Im runnin roughly 17-21 lbs of pressure at idle and I can get 60-70 @ 3K rpms. Its a fresh rebuild, so I dunno if that could be a problem. I am honestly thinkin that my front cover O ring mite have squeezed out. I cant rev to 6k cause its a fresh engine so I was hopin for some ideas from you all of a possible other culprit then the O ring.

Thanx.

TehMonkay · 06-11-2008, 09:23 PM

Did you torque the oil pump down to spec and bend the lock washer up on the side of the nut?

DriftingFC · 06-11-2008, 09:29 PM

Yup. It was my frist rebuild. (engine was actually in pieces when I got it) I spent 2 months reading, re reading and asking questions, checking all tolerances, clearances, the housings, the irons as the manual says to do. Even mocked up a junk engine that I had to make sure I did it right. Took it apart and did it again before I put this one together.

All torque specs were followed. This wasnt my frist engine I have ever rebuilt, just my forst rotary.lol

RETed · 06-11-2008, 09:54 PM

15psi at idle is normal.
What were you expecting?

-Ted

djmtsu · 06-12-2008, 07:19 AM

I was going to say.....that is not low pressure. I get around 20-25 at idle (when warm) and 70+ depending on RPM (anything over like 2K rpm).

When Fero313's FC had low pressure, it was ZERO at idle, and would bleed a little when sustaining RPM's. Then you have a problem!

Barry Bordes · 06-12-2008, 10:14 AM

Mazda’s specification is 50psi @ 3000 rpm minimum on 3rd gens. I run a 1000-1100 rpm idle to float the bearings better.
Barry

DriftingFC · 06-13-2008, 10:48 AM

Well damn then!!! Thx for the reassurance guys. only 1823 more miles till I can let her rip!!! lolz

06-11-2008, 09:20 PM	#1
DriftingFC Rotary Fan in Training Join Date: Feb 2008 Location: Pittsburgh iTrader: (0) Posts: 81 Rep Power: 17	low oil press problems at idle Im runnin roughly 17-21 lbs of pressure at idle and I can get 60-70 @ 3K rpms. Its a fresh rebuild, so I dunno if that could be a problem. I am honestly thinkin that my front cover O ring mite have squeezed out. I cant rev to 6k cause its a fresh engine so I was hopin for some ideas from you all of a possible other culprit then the O ring. Thanx.

06-11-2008, 09:23 PM	#2
TehMonkay Rotary Fanatic Join Date: Apr 2008 Location: Louisville, KY iTrader: (0) Posts: 302 Rep Power: 17	Did you torque the oil pump down to spec and bend the lock washer up on the side of the nut? __________________ My car blows up everytime I start it, it's rotary

06-12-2008, 07:19 AM	#5
djmtsu My minds tellin' me no... Join Date: Feb 2008 Location: Murfreesboro, TN iTrader: (10) Posts: 4,043 Rep Power: 21	I was going to say.....that is not low pressure. I get around 20-25 at idle (when warm) and 70+ depending on RPM (anything over like 2K rpm). When Fero313's FC had low pressure, it was ZERO at idle, and would bleed a little when sustaining RPM's. Then you have a problem! __________________ 1976 Mazda Cosmo RX-5 1976 Mazda Cosmo RX-5 2003 Toyota Tundra TRD 2015 Toyota 4Runner SR5

06-12-2008, 10:14 AM	#6
Barry Bordes Rotary Fanatic Join Date: Feb 2008 Location: Slidell, LA iTrader: (0) Posts: 191 Rep Power: 17	Mazda’s specification is 50psi @ 3000 rpm minimum on 3rd gens. I run a 1000-1100 rpm idle to float the bearings better. Barry __________________ GOD the Incomprehensible Obvious (www.frksj.org)

06-11-2008, 09:29 PM	#3
DriftingFC Rotary Fan in Training Join Date: Feb 2008 Location: Pittsburgh iTrader: (0) Posts: 81 Rep Power: 17	Yup. It was my frist rebuild. (engine was actually in pieces when I got it) I spent 2 months reading, re reading and asking questions, checking all tolerances, clearances, the housings, the irons as the manual says to do. Even mocked up a junk engine that I had to make sure I did it right. Took it apart and did it again before I put this one together. All torque specs were followed. This wasnt my frist engine I have ever rebuilt, just my forst rotary.lol

06-13-2008, 10:48 AM	#7
DriftingFC Rotary Fan in Training Join Date: Feb 2008 Location: Pittsburgh iTrader: (0) Posts: 81 Rep Power: 17	Well damn then!!! Thx for the reassurance guys. only 1823 more miles till I can let her rip!!! lolz