best uprated oil pump

Hi Gerald,

Personally I certainly wouldn't want to see it any higher, although driving at 3000rpm would be stretching the friendship. See how it looks in cold weather, as with lower oil temp, the pressure will be higher.

Ron.
 
Hi all .
Three things .
1)We've already discussed not revving it hard on cold oil , the temperature of the day is immaterial , when the motor is up to temp it's up to temp .
2)If the pressure tops out and stays at 50 psi then the relief valve is doing it's job , no problem .
3) I would be sceptical of the reading from the electronic gauge , It may well be lower , ( or indeed higher , depending what mood the electric sender is in :? )
:D
 
stina wrote,...
the temperature of the day is immaterial , when the motor is up to temp it's up to temp .
Click to expand...

Sorry Stina, that it completely wrong. Ambient temperature has both a noticable bearing on both engine oil temperature and viscosity. If you were to be living in a climate where the weather ranges from below zero through to 40 degrees C and more, you would not have made that statement. :wink:

Ron.
 
I would assume you have your engines ( Thermostats , oil viscosity , etc ) set up down there Ron to cope with the conditions you are running them in ? Surely you run an oil that can cope with the conditions ? Then i stand by my statement that when it is up to running temperature , it is up to running temperature !!! That as you know is why we run multigrade oils , to cope with extreams of temperature !
As with all things engine related , things are only measured , adjusted etc at running temperature .
As i said , i would advise against revving it hard on cold motor / oil . Where ever in the world you are , common sense .
:D
 
stina wrote,...
I would assume you have your engines ( Thermostats , oil viscosity , etc ) set up down there Ron to cope with the conditions you are running them in ? Surely you run an oil that can cope with the conditions ? Then i stand by my statement that when it is up to running temperature , it is up to running temperature !!! That as you know is why we run multigrade oils , to cope with extreams of temperature !
As with all things engine related , things are only measured , adjusted etc at running temperature .
As i said , i would advise against revving it hard on cold motor / oil . Where ever in the world you are , common sense .
Click to expand...

Hi Stina,

Couldn't agree more as far as revving a cold engine, and I never suggested to do otherwise. :wink:

As for the rest of what you have written, I'll answer that later, need to keep an appointment.

Ron.
 
SydneyRoverP6B said:
Hi Stina,

Couldn't agree more as far as revving a cold engine, and I never suggested to do otherwise. :wink:

As for the rest of what you have written, I'll answer that later, need to keep an appointment.

Ron.
Click to expand...

Oh Gawd , now i feel like i did when i scored a detention ( again ) back in the school days :shock:
Sorry Ron , only jesting :LOL:
 
stina wrote,...
I would assume you have your engines ( Thermostats , oil viscosity , etc ) set up down there Ron to cope with the conditions you are running them in ? Surely you run an oil that can cope with the conditions ? Then i stand by my statement that when it is up to running temperature , it is up to running temperature !!! That as you know is why we run multigrade oils , to cope with extreams of temperature !
As with all things engine related , things are only measured , adjusted etc at running temperature .
Click to expand...

Yes indeed Stina, it is time for another detention, this time for making wild assumptions based on no evidence nor facts at all. :wink:

Ideally I should let you go away and do your homework first, but I'll give you a few guides to being going along with.

(1) Coolant temperature is not a reliable indicator of engine oil temperature.

(2) Ambient temperature has a direct influence on the temperature of the engine oil.

How do I know this you may ask. Well, I fitted an engine oil temperature gauge into my Rover's engine in 1992, so to date 22 years and just on 190,000 Miles of evidence gathering. In cold weather, say less than 15 degrees C, the engine oil temperature can lag well behind coolant temperature for anything up to an hour or more of highway running, and in some instances, the oil temp will never reach the coolant temp. The ideal oil temp is between 83 and 92 degrees C when measured at the base of the sump. On short trips or low speed running, the oil temp will sometimes never exceed 60 degrees C. When the ambient temp is above 30 degrees C, the oil temp will climb much more rapidly and then maintain a temp close to ideal. At higher ambient temperatures approaching 40 degrees C, the oil temp will sit around 100 degrees C. These are just a few examples, there are many more.

Now I appreciate that you have only owned your Rover for a short time and you haven’t covered very many miles, so on this occasion there will only be one afternoon of detention as you have allowed your enthusiasm to get the better of you. However, if you continue to make such comments, I will be writing a letter to your parents and you will have lines to write out also! :) :wink: :LOL:

Ron.
 
All duly noted Ron and i take on board your statement about oil temperature . But only that . I still say that The uprated oil pump is fine when the oil is up to temp . I have heard of two other incidents of failure , one that was assembled incorrectly , another a guy with a p5 revving the hell out of it leaving a show on a cold engine . No doubt there are more , just the same as there are people running them totally reliably .
Now onto my ownership and where i draw my Knowledge from as you seem to question me . Indeed i have owned the P6 for 3 years , prior to that around 60 ( i loose count ) other cars since 1983 , some classics some not so :? 15 years of driving and working on class 1 hgvs and heavy plant helps with the understanding of what goes on in an engine too . I don't claim to be a professional mechanic , rather an enthusiast who is prepared to have a go , and share my findings for the benefit of others . :D
 
Ron,

I agree with the statement that a pressure pf 50-55psi is a healthy oil pressure for the RV8. I have dismantled 6x RV8 with different wear and overhauled 2 and haven't seen much wear on the skew gears on all 6 engines although some were pretty worn on crankshaft, pistons ect. If you make a strength calculation and calculate the load and surface pressure of the skew gear, you will find the skew gears can easily handle the oil pressure of 55psi.
In theory Stina is right that a thermostat is designed to control engine temperature but as you correctly state its not a very precise control. I don't understand your unfriendly attitude to Stina as you are not a specialist on oil pumps/oil pressure which became clear during a recent discussion about oil flow/oil pressure on this forum.
Regards

Peter
 
Peter,

I am just taking a conservative view re the magnitude of oil pressure, rather than pushing the envelope. There is no need to worry yourself, Stina and I get along just fine, both on here and via PM.

Ron.
 
some interesting reading/info to add to the topic I found a while back on the early Buick 3.8 V6 which shares the same timing cover/oil pump arraingment and marginal oil pressure issue, as the Rover V8 and Buick 215ci V8, noting the steel thrust plate mod if aluminium oil pump cover becomes scored or worn.

http://www.google.com.au/url?q=http://w ... -YyQfhq_rg

also link for the aformentioned steel thrust plate; made by Sealed Power part# 224-518TP listed for Buick 215 (ie Rover V8)

http://www.google.com.au/url?q=http://w ... T5ar0z6hUw

Regards,
Scott
 
That mod on the main oil journals is interesting .
No one told me I should have "opened out" the four main bearing holes on the pump - is it too late ? and Ron's prediction is about to happen to my skew gears .
I'll follow the leader .
 
GRTV8 said:
That mod on the main oil journals is interesting .
No one told me I should have "opened out" the four main bearing holes on the pump - is it too late ? and Ron's prediction is about to happen to my skew gears .
I'll follow the leader .
Click to expand...

Try not to worry Gerald :LOL: Although an interesting read you've not built a 10 second monster subject to the stresses imposed by the drag strip :D
 
Re: best uprated oil pump

Postby westOz74P6B on Thu Jan 30, 2014 4:00 pm
some interesting reading/info to add to the topic I found a while back on the early Buick 3.8 V6 which shares the same timing cover/oil pump arraingment and marginal oil pressure issue, as the Rover V8 and Buick 215ci V8, noting the steel thrust plate mod if aluminium oil pump cover becomes scored or worn.

http://www.google.com.au/url?q=http://w ... -YyQfhq_rg

also link for the aformentioned steel thrust plate; made by Sealed Power part# 224-518TP listed for Buick 215 (ie Rover V8)

http://www.google.com.au/url?q=http://w ... T5ar0z6hUw

Regards,
Scott
Click to expand...

so these will fit our p6 oil pumps? If sleipnir really does have low oil pressure maybe this is a good idea!

Rich
 
The Buick front cover is a bolt on fit. A friend has one on his P6 and is happy with the
oil feed and pressure. He also drilled out the galleries as mentioned earlier when he
built the engine up for racing in the local Classics section.
 
that seems like very good value and an obvious upgrade path for getting a high volume bolt on replacement and ylu get to keep your hands clean on reassembly too.

Graeme
 
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