[Supras] Oil accumulator vs. pumping air

[berniek at technicaldevelop.com]

Brian:

    You might want to try the "quick and dirty" oil filter-punched 
hole-copper tubing stub-hose-gauge trick.  Its a lot easier than getting 
to the oil gallery.  I was surprised at how low the stock gauges read on 
both my '90 and '91 (new sender with the JDM rebuild).  The '90 read low 
at idle, but the '91 reads zero.  A precision gauge reads 20 PSI at 600 
RPM, hot enough to cycle the cooling fans.  There may be 2 PSI drop 
through the filter at that speed with the oil thinned out.


       Bernie



Walker, Brian (Rich. Dist) wrote:
>
> I make sure to have the oil level a little above full (~1/4 quart) 
> when driving on track/auto-x just to be sure there is a sufficient 
> level in the pan under cornering. I watched a new Z51 Vette throw a 
> rod last year and best we could tell it was from starvation as he was 
> coming out of a hard corner and was likely low on oil. It was an auto 
> w/ stock rev limiter on 315 Hoosiers, much more traction than we're 
> talking about here. I sometimes drive a little fast on some backroads 
> when I can see no one is around but I assure you it's not near the 
> level you'd see on track or auto-x. Afterall, putting 2 off is 
> recoverable on a track, putting 2 in a ditch isn't.
>
> My idle oil pressure has always been low also (normally ~4-5 psi) 
> which is why I never let the car idle for long (during cool down will 
> give some rpms to see 20 psi or so) I've always thought the cams 
> aren't getting good enough flow at idle but last time they were out 
> the journals looked pretty good (and I used to DD in traffic back then)
>
> Brian W-88T
>
> Date: Sat, 8 Dec 2007 16:44:15 -1000
> From: "Jeff Mohler" <speedtoys.racing at gmail.com>
> Subject: Re: [Supras] Oil accumulator vs. pumping air
> To: berniek at technicaldevelop.com
> Cc: Patrick Golder <psg559 at yahoo.com>, supras at supras.com
> Message-ID:
>         <a969fbd10712081844u3e76bfb2of9e3b31b28210139 at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> Ya..well..the RE's are still a street tire, a horrendously long way
> from any G forces that would create a problem.
>
> Were running cal speedway at 130 (miatas) to 165+ in other imports
> there, with no oiling issues on R's and slicks.
>
> Granted that at an extreme, I can see what youre saying, but the
> oiling system is not moving that much volume, to bring the level down
> so low that it would dry up the sump intake.
>
>
>