Oil Pressure

[Viv James TraX Interconnect (Pty.) Ltd]

Peter,
I also battled to get pressure just using the starter. After 3 or 4
minutes of cranking the starter on my freshly rebuilt cream TC and
getting no pressure depite priming the pump etc., I eventually said to
hell with this and I connected the ignition. The pressure came up
within a couple of seconds. I realized the risk but I was perhaps more
worried about damaging an elderly starter motor and I got away with
it. Some guys tow their car which gives a few more rpm under less
load than actually running the engine. I figured that the fact that I had
pumped everything full of oil during assembly and the 3 or 4 minutes
of starter meant that things should happen pretty fast which they did.

Hope this helps.

Viv

[George Arber]

Sometime ago I raised a query re. the slow rise in oil pressure after a
lengthy restoration of our TC EXU. At the time I received the usual helpful
replies and in the main was told not to be too concerned . After 1600 miles
the car continues to run well and is slowly loosening up. I am however still
concerned as to the slow rise in oil pressure.
On firing up the engine whether from hot or cold the gauge shows a reading
at a reasonable pace to 20 psi and then very gradually creeps up to 60 psi.
I noted yesterday that after a 100 mile blast over the hills with the
running oil pressure of 60 psi that when switching off the engine, the oil
pressure was equally sluggish in reducing to 20 psi at which point it
returned to zero very quickly. I have replaced the relief valve ball and
spring and get the same effect with a different gauge. The capillary tube to
the gauge is new. I have replaced the first (new)canister filter as I
suspected that the filter was the problem, however the second canister type
is showing the same symptoms. I seem to recall that some time ago there was
the odd comment as to the canister type filters causing pressure drop
problems. In due course I am going to fit one of Bob Grunau's adapters
thereby using the spin on/off type filter cartridge and perhaps this might
cure the problem.
I wonder if the problem be within the oil pump ? I have lapped the face of
the pump body to minimise the clearance between the end plate and the gears.
If anybody has any thoughts as to the cause of the mystery please let me
know.

George.........TC EXU 7548 Derbyshire England

[KEN PORTER]

George:
There is the possibility that you have air trapped in the gauge feed
line. Disconnect the feed pipe at the gauge and with the ignition off
turn the engine over on the starter until you get a good oil flow from
the pipe. Reconnect and all should be well.
Ken TC 4147

George Arber wrote:

>Sometime ago I raised a query re. the slow rise in oil pressure after a
>lengthy restoration of our TC EXU. At the time I received the usual helpful
>replies and in the main was told not to be too concerned . After 1600 miles
>the car continues to run well and is slowly loosening up. I am however still
>concerned as to the slow rise in oil pressure.
>On firing up the engine whether from hot or cold the gauge shows a reading
>at a reasonable pace to 20 psi and then very gradually creeps up to 60 psi.
>I noted yesterday that after a 100 mile blast over the hills with the
>running oil pressure of 60 psi that when switching off the engine, the oil
>pressure was equally sluggish in reducing to 20 psi at which point it
>returned to zero very quickly. I have replaced the relief valve ball and
>spring and get the same effect with a different gauge. The capillary tube to
>the gauge is new. I have replaced the first (new)canister filter as I
>suspected that the filter was the problem, however the second canister type
>is showing the same symptoms. I seem to recall that some time ago there was
>the odd comment as to the canister type filters causing pressure drop
>problems. In due course I am going to fit one of Bob Grunau's adapters
>thereby using the spin on/off type filter cartridge and perhaps this might
>cure the problem.
> I wonder if the problem be within the oil pump ? I have lapped the face of
>the pump body to minimise the clearance between the end plate and the gears.
>If anybody has any thoughts as to the cause of the mystery please let me
>know.
>
>George.........TC EXU 7548 Derbyshire England
>
>
>
>
>
>
>
>Yahoo! Groups Links
>
>
>
>
>
>
>
>

[i.thomson@talk21.com]

George, I would be suspecting the gauge itself. Swop it for another gauge,
buy a cheap modern one if you have to. Any restriction in the piping to the
gauge would cause these symptoms. Keep us posted.

Ian Thomson


------
Sometime ago I raised a query re. the slow rise in oil pressure after a
lengthy restoration of our TC EXU.

If anybody has any thoughts as to the cause of the mystery please let me
know.

George.........TC EXU 7548 Derbyshire England





--------------------
talk21 your FREE portable and private address on the net at http://www.talk21.com

[i.thomson@talk21.com]

Sorry Ken,

This is what we would call over here an old wives tale, or to be more PC, a hoary old chestnut. Air in the pipe will make no appreciable difference to either the pressure itself or the rate of increase/decrease. Trying another gauge and pipe is the only real test.

Ian Thomson

---------

George:
There is the possibility that you have air trapped in the gauge feed
line. Disconnect the feed pipe at the gauge and with the ignition off
turn the engine over on the starter until you get a good oil flow from
the pipe. Reconnect and all should be well.
Ken TC 4147

George Arber wrote:

>Sometime ago I raised a query re. the slow rise in oil pressure after a
>lengthy restoration of our TC EXU.

--------------------
talk21 your FREE portable and private address on the net at http://www.talk21.com

[joecurto@aol.com]

George take the solid oil pressure line from the car (I know a pain
in the butt) once it is on the bench take the propane torch (or Brit
Equivalent) and heat the line its entire length and melt out the accumulated sludge. Be
careful as it will catch fire and you will get hot drippings on the ground (do
away from the brides rugs) and then after it cools down blow it out and maybe
flush it out with brake or carb cleaner, I bet you the needle will rise much
quicker than it does now.

Joe Curto


[Non-text portions of this message have been removed]

[Clive Sherriff]

Just a thought - what oil filter do you have?

There are some conversion units that take a modern filter that are drilled
wrongly so that oil pressure CLOSES the rubber non return flap in the
filter. The relief valve should overcome this (though theres no oil
filtration) Eventually pressure will build up but if the relief valve is
duff then this takes time.

Some engines are very good at draining their oil out of the systen when
standing, and so the first few seconds are taken in expelling the air
spaces, and filling the oilways with oil at effectively normal atmospheric
pressure. Hence some delay of 2-3 seconds can be normal, though not exactly
desirable.

Regards

Clive

==================================================

----- Original Message -----
> ------
> Sometime ago I raised a query re. the slow rise in oil pressure after a
> lengthy restoration of our TC EXU.
>
> If anybody has any thoughts as to the cause of the mystery please let me
> know.
>
> George.........TC EXU 7548 Derbyshire England
>
>

[Bob Grunau]

For information, my TC/early TD oil filter adapter replicates the top half
of the original oil filter cannister and is CROSS DRILLED to have correct
oil flow through the spin-on filter. The adapter simply replaces the
original cannister and uses original block mounting, oil,lines and banjo
bolts. Cost still $70.00 US$ each plus postage.
Regards, Bob
Bob Grunau
150 Pinewood Trail,
Mississauga, Ontario,
Canada, L5G-2L1



Just a thought - what oil filter do you have?

There are some conversion units that take a modern filter that are drilled
wrongly so that oil pressure CLOSES the rubber non return flap in the
filter. The relief valve should overcome this (though theres no oil
filtration) Eventually pressure will build up but if the relief valve is
duff then this takes time.

Some engines are very good at draining their oil out of the systen when
standing, and so the first few seconds are taken in expelling the air
spaces, and filling the oilways with oil at effectively normal atmospheric
pressure. Hence some delay of 2-3 seconds can be normal, though not exactly
desirable.

Regards

Clive

> ------
> Sometime ago I raised a query re. the slow rise in oil pressure after a
> lengthy restoration of our TC EXU.
>
> If anybody has any thoughts as to the cause of the mystery please let me
> know.
>
> George.........TC EXU 7548 Derbyshire England

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[Dr J]

members
oil pressure cold is 75-85 pounds,after warmup drops back to 30pounds
plan to have complete evaluvation in the fall
using 10w-30oil,any suggestions re changing oil viscosity?
thanks DR J tc-6993 arnprior canada

[Non-text portions of this message have been removed]

[Diecuts@aol.com]

Hi,

I would change to 20-W-50 for a little more range of protection. Other than
that, numbers seem fine.

List, any sources for TA tach gear reduction box and cable.? Abingdon
Spares?

Cheers, Lee Jacobsen, Dearborn, MI TA2969 tickford


[Non-text portions of this message have been removed]