What are the main causes of high oil pressure?
Oil pressure in a car is measured as the resistance to flow between the oil pump in the oil pan and the bearings in the crankshaft. If it is actually too high, it means you are not getting enough oil through the bearings to keep your engine from self destructing.The higher your rpm, the higher your oil pressure, up to the point where an extra valve detours the excess oil back to the oil pan to recirculate. Typically, at idle you will have 10 to 15 psi, with 30 to 40 psi at driving speeds.The colder your engine, the higher your oil pressure, as the oil is still much thicker than it will be at operating temperatures. Typically, on startup, you will have 40 to 60 psi, which will drop to ranges listed above once the engine heats up.A high oil pressure reading on your gauge means:The oil is too viscous (thick). Most cars today are designed for 0W-20 to 5W-30 viscosity. If you are using 10W-40, 20W-50 or something like that, you will have high oil pressure and high wear.Your filter bypass valve on the filter or in the block is stuck closed, and the oil is too thick or dirty to pass through the filter media, trying to go through the bypass valve.If the high pressure is at high rpm, it may be the secondary bypass valve I mentioned at the beginning.Clogged oil passages to the bearings from sludge.Your thermostat is missing or stuck open, not letting the engine heat up.Your gauge is broken. Check it with a manual gauge.
What is the total estimate cost to completely restore Yamaha rx 100?
I have recently restored my dad's rusted RX100.As one of late 90s kid ,I was never excited about these old bikes. I was more passionated for racing bikes. Then I rode my neighbor's RX135.It felt like I'm riding through the heaven ,soft clouded road with such an ease to handle and so comfortable with such an extraordinary pickup ,with such power and busy road I was not able to shift in 5th gear ,4th was already enough for me in 60–70kmph . Mine pulsar 150 (2009 model) was no where near it.That was the time I thought to restore my dad's bike. And now I own a Rx100 .Rx 100 cost much more than I was expected and it goes asPaint-5000Remove of chrome-800Stickers -750Both Front and rear suspension got replaced.Headlight-350(tvs heavy duty)+projector (1200)Handle-350Rebore- 4kSpeedometer with that other boxes beside- around -1000Rim-800 eachTyre -front (1400) rear tractor type tyre(2200)Side boxes -400Indicators (pulsar) -600Mechanic cost -2000Servicing of suspension and engine -2000Mud guard - 300Backlight -700Battery-1400Petrol tank -32006v to 12v -1500Wiring-800Switches-500Leg guard-400Insurance ,rc renewal and all that government documents with some minor more works on bike which I can't remember cost me around 40k.