[TR] oil pressure

[Brian Jones]

What weight oil are you both using?Gary: I think 40 hot, if with a 20wt-50,
is on the ow side but manageable. I wonder why it is low?
Wayne: 90 lbs? I thought a pressure relief valve would come in to play at
around ~70lbs.

My TR4, with 20wt-50, starts cold in temperate weather with ~75lbs/35lbs
(running/idle). After several hours of interstate, it drops to 60/30lbs.
Yesterday, running through the Mojave Desert to the VTR National, it was 118
degrees. My running oil-pressure dropped to 50lbs. I had no interest in
finding out my idle pressure ;^). I was glad to get out to the coastal
plain.

Brian Jones
Valley Forge, PA
Truimph TR4, 1962, CT1455L (now with o/d)

On Wed, Sep 30, 2009 at 8:16 PM, Wayne <rengrave at verizon.net> wrote:

> I just my TR6 on the rroad after an engine rebuild and I am getting the
> same results.
> 90 #s at highway speeds, 40 at idle.
> I have only been running the car for a week and I am still running break-in
> oil
> 30 wt non-detergent with a pint of Lucas oil additive (zinc/moly).
> My odometer is not working, but I think I have about 200 miles on the new
> engine.
>
> Wayne
> 73 TR6
>
>
> ----- Original Message ----- From: "Gary Nafziger" <nafzigerg at yahoo.com>
> To: <triumphs at autox.team.net>
> Sent: Tuesday, September 29, 2009 10:24 PM
> Subject: [TR] oil pressure
>
>
>
>  just a quickie.......my oil pressure has been amazing since engine rebuild
>> (tr-6)  ........cold start 70+.......then 40 at hot idle.
>>
>> suddenly now its
>> 50 cold start and 40 running warmed up ..........at idle around 20.
>>
>> I've
>> taken off the line to guage and blown it out, hooked up another older
>> guage I
>> had on hand and tested it with same results.  also checked the spring in
>> pressure valve ect.  the spring is one millimeter shorter than suggested
>> length but I'm thinmking thats not significant.  ??   I have around 1,000
>> miles on the rebuild......already changed oil at 300 miles.  Will do
>> another
>> oil/filter change soon.
>>
>> I'm not seriously worried about this and plan on
>> running as is.  But just curious why and wondering if anyone else has had
>> similar results.
>>
>> gary n.
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