With a mechanical gauge in place, I have 16psi hot idle, 40psi hot cruise at 4k with Rotella T 15w40 Dino oil... still seems low to me.
Wallyman
Danijel Krajisnik
<[EMAIL PROTECTED]>
To
07/14/2008 06:57 PM [email protected],
[EMAIL PROTECTED]
cc
Please respond to
[EMAIL PROTECTED] Subject
Re: Oil Pumps - OEM vs.
aftermarket
The miata oil pressure is kind off all over the map if you trust the OEM
gauge.
I usually see:
Cold-idle 40/cruise 60ish all the way up to 80-90 at high RPM
Hot-idle 20ish/cruise 35ish up to 60ish at high RPM.
You will notice that there is not much consistency between the OEM gauges
and various people will report various readings.
--- On Mon, 7/14/08, [EMAIL PROTECTED] <[EMAIL PROTECTED]>
wrote:
From: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
Subject: Oil Pumps - OEM vs. aftermarket
To: [email protected]
Date: Monday, July 14, 2008, 3:24 PM
Is the current thought still pay the price for OEM now or pay the uglier
price of broken parts later?? I recall seeing discussion many moons ago
on this..
Also, shimming the pump.. need some guidance on that. Never done it, not
seen how to do it. Found a Chris Chu post (
http://forum.miata.net/vb/showpost.php?p=182281&postcount=7) that simply
describes it as:
Tracing along the oil path, you'll find a hairpin locking a spring and
piston in a tunnel (around 10mm in diameter). Remove hairpin, add washers
to the top of the stack (closer to the hairpin) and put back hairpin. I
shimmed around 1.5-2mm total (can't remember) and without cooler reaches
close to 6 (90psi) which is higher than enough. With cooler, pressure
never reaches 4 (60psi) but close to it most of the time and should be
high enough.
Remember that shimming oil pressure relief valve increases load on the
oil pump and may introduce potential side-effects. So don't overdo it.
Any clarification/caveats/etc? What is my target oil pressure cold
idle/hot idle/cold cruise/hot cruise?
Wallyman
_______________________________________________
Miatapower mailing list
[email protected]
http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower
<<inline: graycol.gif>>
<<inline: pic12570.gif>>
<<inline: ecblank.gif>>
_______________________________________________ Miatapower mailing list [email protected] http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower
