If anyone can tell me what the causes normally are on the Yota engine.
I am hoping its just a faulty sensor
And I am not talking about when going around corners thi is at idle and on 2nd cam.
How low, and is there any variation up and down the rev range.
I had an oil temp sensor fail and that gave a constant reading when the car was cold and idling, but gave completely random numbers, including some negatives, when the car was running and warm. New sensor and its been fine since.
I see fairly low pressure, <1.5bar at idle when the engine is warm, but never had any problem when its up and running. Haven’t really thought to glance at it on the way through Corum though.
Hope it is just the sensor. Good luck.
If anyone can tell me what the causes normally are on the Yota engine.
I am hoping its just a faulty sensor
And I am not talking about when going around corners thi is at idle and on 2nd cam.
Yeah what pressure are we talking about and at what oil temp. Also what oil are you using. Also where are you measuring the oil pressure??
Is this from the standard warning light, or your SPA gauge? If the former I would get it towed to the garage asap and checked out as it is potentially very damaging for the engine. If the gauge, hopefully just a faulty sender. Oil pressure and temp gauges don’t seem to be the most reliable devices.
Mark
Its the SPA one and I am getting negative readings so sounds like the sensors fecked if it few
Done about 1500 mile since oil change so I will change the oil and try and fit a new sensor might need some help … Mark
What temps and pressure have you had on the SPA?
Just collected my car from Plans having had twin coolers fitted and on the run back to Cornwall I was seeing pressure at 70 when running and temps 50-60deg on the road.
Jamie, I thought that the second cam worked on oil pressure, hence some complaints of it dropping of cam on high speed bends (oil starvation). If yours is still switching cams I would have thought it would be ok!
Gav
Firstly the low pressure it would seem is just the sensor acting up etc - guess the real test will be at KH at the weekend!
Oil temp wise (dont forget I have an SC) I am seeing max 80 on road with HARD driving in hot ambient. On a hot trackday i have seen peak 105 so not too bad
With my car without oil coolers, and using the water to oil heat exchanger plate, I’ve been seeing an oil temp of around 93 on the road, and on a hot track day rising to over 120. That’s with the water temp remaining below 100.
The car is currently in at Hangar 111 having a twin cooler setup installed, so I’ll see what sort of a drop I get when I get it back.
120 hope you have some good oil in there
120 hope you have some good oil in there
Mobil 1 0w40 new a couple of days before, and changed again immediately afterwards.
Mobil 1 0w40 new a couple of days before, and changed again immediately afterwards.
Isn’t that a bit “thin”? Not too sure about the Yota engine’s requirements, but for the Honda we use 5w40 Silkolene.
The Bemani requires 10W60
Mobil 1 0w40 new a couple of days before, and changed again immediately afterwards.
Isn’t that a bit “thin”? Not too sure about the Yota engine’s requirements, but for the Honda we use 5w40 Silkolene.
See this thread for the last discussion on my oil choices.
You guys worry too much. If you ever found out what oil temperatures production sports cars runs you’d lay an egg.
The upper limit for all my recent cooling projects has been 150�C for the oil assuming its running on extended service intervals on either Mobil1 or Castrol SLX. 120�C is a walk in the park for modern oils, reducing the temperature will only serve to increase friction in the engine and reduce power. Also a twin front cooler set up must weigh in at over 10kilos?
I also found out a while back that the all the readings on the temperature gauages of a modern car bear absolutely NO RELATION to the real measured values in the engine. They are simply set to rise gradually and stop in the middle unless something very serious goes wrong in which case thay rise into the red! This is all done to prevent customers from complaining that the oil temp looks a bit high etc. One car I looked at didn’t even have an oil temp sensor, the gauge was there for effect!
As advised by Lotus…
Normal oil pressure at running temperature and 3,000 rpm is 300 - 540 kPa
(45 - 80 psi)
Normal oil temperature should in the range 80 - 100 centigrade. You need be
concerned only over 130.