Oil Pressure. What should it be?
Discussion
unrepentant said:
T450t said:
Idle: 80 cold
30 hot
80! Suggest you have a faulty gauge.30 hot
My 3 SP6's have had a cold idle of between 40 and 50.
When cold (< 15c) @ 1k around 55psi to 60psi
When hot (> 55c) @ 1k around 20psi
Make sure you always keep the oil at the maximum level (even above..) I found that if its at all below that you get pinking (probably Cylinder 6 as usual)
There's a certain amount of variation in the sensors..
To the guys with the higher pressure pumps, what reassurances from the supplier did u get that the higher pressure won`t fubar seals?
When hot (> 55c) @ 1k around 20psi
Make sure you always keep the oil at the maximum level (even above..) I found that if its at all below that you get pinking (probably Cylinder 6 as usual)
There's a certain amount of variation in the sensors..
To the guys with the higher pressure pumps, what reassurances from the supplier did u get that the higher pressure won`t fubar seals?
KillerJim said:
When cold (< 15c) @ 1k around 55psi to 60psi
When hot (> 55c) @ 1k around 20psi
Make sure you always keep the oil at the maximum level (even above..) I found that if its at all below that you get pinking (probably Cylinder 6 as usual)
There's a certain amount of variation in the sensors..
To the guys with the higher pressure pumps, what reassurances from the supplier did u get that the higher pressure won`t fubar seals?
Oil pressure shouldn't have anything to do with pinking (pre-ignition), unless you have no oil pressure, but then you'll be hearing lots of pinking type noises :-(When hot (> 55c) @ 1k around 20psi
Make sure you always keep the oil at the maximum level (even above..) I found that if its at all below that you get pinking (probably Cylinder 6 as usual)
There's a certain amount of variation in the sensors..
To the guys with the higher pressure pumps, what reassurances from the supplier did u get that the higher pressure won`t fubar seals?
Pinking is either timing being a smidge out, throttle pots needing adjustment, low octane fuel or a combination of these (I'm sure an expert will have other reasons too).
T450t said:
unrepentant said:
T450t said:
Idle: 80 cold
30 hot
80! Suggest you have a faulty gauge.30 hot
My 3 SP6's have had a cold idle of between 40 and 50.
I've been informed by a very reputable TVR engine builder that the new "High flow" oil pump is a waste of money. Speed 6 engines never had an issue of lack of oil pressure/flow to the head. The problem was the number of oil pathways into the head.
He described it to me like this - Imagine a farmer has an enormous field and he has designed a watering system under the ground. Then someone who knows what they're talking about comes along and tells him the design is all wrong and there aren't enough water lines laid in his field to sufficiently supply the water needed.
The answer is not to then just increase the flow and pressure to the existing (lack of) water lines, as this would be pointless, but to redesign and increase the number of water lines.
Remember that these are dry sumped engines, the oil pump does not have to lift the oil from the bottom of the engine (i.e the sump) to the top of the engine. You do not need high oil pressures.
He described it to me like this - Imagine a farmer has an enormous field and he has designed a watering system under the ground. Then someone who knows what they're talking about comes along and tells him the design is all wrong and there aren't enough water lines laid in his field to sufficiently supply the water needed.
The answer is not to then just increase the flow and pressure to the existing (lack of) water lines, as this would be pointless, but to redesign and increase the number of water lines.
Remember that these are dry sumped engines, the oil pump does not have to lift the oil from the bottom of the engine (i.e the sump) to the top of the engine. You do not need high oil pressures.
TVR_owner said:
T450t said:
unrepentant said:
T450t said:
Idle: 80 cold
30 hot
80! Suggest you have a faulty gauge.30 hot
My 3 SP6's have had a cold idle of between 40 and 50.
smithyl23 said:
I've been informed by a very reputable TVR engine builder that the new "High flow" oil pump is a waste of money. Speed 6 engines never had an issue of lack of oil pressure/flow to the head. The problem was the number of oil pathways into the head.
He described it to me like this - Imagine a farmer has an enormous field and he has designed a watering system under the ground. Then someone who knows what they're talking about comes along and tells him the design is all wrong and there aren't enough water lines laid in his field to sufficiently supply the water needed.
The answer is not to then just increase the flow and pressure to the existing (lack of) water lines, as this would be pointless, but to redesign and increase the number of water lines.
Remember that these are dry sumped engines, the oil pump does not have to lift the oil from the bottom of the engine (i.e the sump) to the top of the engine. You do not need high oil pressures.
I see what you mean about the oil ways, but most people that are talking about having this oil pump change done have already got the extra oil way put in(I know I have). I cant help but think it will benefit the engine with more oil being pushed around it. He described it to me like this - Imagine a farmer has an enormous field and he has designed a watering system under the ground. Then someone who knows what they're talking about comes along and tells him the design is all wrong and there aren't enough water lines laid in his field to sufficiently supply the water needed.
The answer is not to then just increase the flow and pressure to the existing (lack of) water lines, as this would be pointless, but to redesign and increase the number of water lines.
Remember that these are dry sumped engines, the oil pump does not have to lift the oil from the bottom of the engine (i.e the sump) to the top of the engine. You do not need high oil pressures.
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