Someone on this list once commented that 10 pounds/1000 rpms was
appropriate. If so, it is OK. Looking for a more informed follow-up.
Tom
> [Original Message]
> From: Vink, Graham <vinkg@fleishman.com>
> To: <healeys@autox.team.net>
> Date: 5/19/04 9:13:19 PM
> Subject: RE: Oil Pressure Questions
>
> Jack's question triggered a question from me - the reference to the 1/4"
> nut behind the relief spring. Is this intended to boost pressure, and if
> so, does it work?
>
> My BJ7 probably has 10 to 20k miles on a rebuild (not by me) and the oil
> pressure readings are similar to or lower than Jack's - fairly high on
> startup (with 20-50 oil) but probably maxing out in the 25-30 psi range
> once the oil warms up, and dropping even lower at idle.
>
> By most accounts, this is on the low side, and some people have
> suggested just replacing the bearings from below. I'm more inclined to
> drive it until something breaks and I'm forced to yank everything,
> including the tranny that needs a rebuild anyway. But does this "nut
> behind the relief spring" fix achieve any tangible results? Or would a
> new relief spring help - have no idea if mine was ever replaced, but it
> quite possibly was not
>
> I've also heard that oil "flow" is more important than pressure - that
> as long as you're getting good flow, and the bearings aren't knocking,
> you shouldn't worry. True?
>
> Thanks.
>
> -Graham
>
>
> -----Original Message-----
> From: Brashear, Jack, N [mailto:JNBrashear@garverengineers.com]
> Sent: Thursday, May 20, 2004 4:24 AM
> To: Healey List
> Subject: Oil Pressure Questions
>
>
> Hi All, I've owned the same Healey since new for almost 42 years but
> there's always something you don't understand about your own car. It's
> a BT7 Mk2 with the 29E engine and less than 400 miles since rebuild and
> with oil pressure that's too low for my comfort zone. The rebuild
> includes new rocker shaft and new bushings and literally everything else
> new. Crank checked to specs on rods and mains, cam journal bearings,
> etc. all check to specs. I have a Smittys spin-on oil filter adapter. I
> have tried oil viscosity extremes from GTX 20-50 to Valvoline racing
> straight 60 wt. I have a 1/4" nut behind the relief spring. The oil
> pressure is pretty good at about 65 psi at startup but drops to just
> under 30 psi at about 3000 rpm on he freeway at about 180-185 degrees
> temp. The oil pump also checked to specs so I DID NOT replace it. Is
> there a HIGH PRESSURE oil pump available?? Do I need such a thing??
> Does HEAVY DUTY mean the same as HIGH PRESSURE?? I'd appreciate some
> feedback from this awesome list. Thanks Much!! Jack
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