turbine

iTrader: (1)

can i remove this to improve oil cooling. i amagen this is some sort of epa bull ****
let me know
is there any danger

Project84

Don't remove it.

turbine

iTrader: (1)

and your reason?

turbine

iTrader: (1)

bump

turbine

iTrader: (1)

does any one have any valid reason to not remove this valve
if removed the way i see it is i will have incrased oil flow/ circulation with aditional cooling. i should not see an increase in oil preshure because the oil cooler only sees oil way after the enginge has already recieved its dose

turbine

iTrader: (1)

bump

RotaryResurrection

iTrader: (8)

https://www.rx7club.com/forum/showth...tat#post259515



"BTW. DO NOT put it on without a thermostat. The oil cooler will burst. My friend did not listen to me and put two 34 row Earl's cooler without thermostat and the oil cooler bursted in no time. He was lucky he wasnt driving on the freeway, otherwise oil will be all over his tires and he would be dead "



"The oil cooler will burst without a thermostat is because rotary engine has a much higher oil pressure than regular piston cars. When the oil is cold, it's much thicker than when it's hot and the flow of the oil is not as good and it will build up the oil pressure even more. If you want to take the risk of not having a thermostat and saving some money, it's your choice. I saw it happened and that's my experience. BTW, oil needs to get to its operating temp for better lubrication. Thermostat maintains the oil at a constant temp. I don't want to hear one of you guys running a oil cooler without thermostat and then the oil cooler bursts and dumps all the oil to your front tires so you spin out and crash the car. But I am not the one who pays for your upgrade. So take your risk if you want."

turbine

iTrader: (1)

thanks for the knowledgeable reply are there any mods that can be done to it

NZConvertible

No, removing it will not improve cooling and no it is not "some sort of EPA bullshit" All it does is bypass the oil cooler until the oil temp reaches ~140degF so the engine warm up faster. After that is has no effect whatsoever.

HAILERS

Maybe I'm reading the above wrong, but the oil cooler is the FIRST thing to see pressure after the oil pump.

https://www.rx7club.com/forum/attach...hmentid=104575.

NZConvertible

Correct, the oil cooler inlet is connected directly to the oil pump outlet.

trochoid

iTrader: (6)

The thermo valve in the oil cooler has a function similiar to the thermostat in the cooling system. Oil has an operating temperature range in which it is most efficient. Either too cold or too hot and it loses that effciency and engine wear increases.

As a side note, I read years ago that a piston engine, on cold start up, wears 28 times faster that when the engine and oil are at optimum operating temperature.

rcjunkie

Yeah, how about that coolant cooler (radiator), that's the biggest EPA bullshit I've ever seen. I think it should also be removed ;-)

Seriously, the only time you should remove the oil cooler thermostat is to replace it. It serves a purpose similar to the thermostat for our coolant system. Think of oil as the lifeblood of your engine. Just like the fact that our bodies run best at around 98 degrees F and die if temp gets too high or low, our car's run best at a certain temperature too. If you increase the temp you risk damage. If you decrease the temp you risk engine sludge buildup (engine oil needs to be at a high enough temp to burn off water), increased wear due to thicker oil (cold oil is thicker), poorer fuel economy, increased emissions etc.etc..

Don't do it.

Aaron Cake

iTrader: (1)

Just to make it clear, removal of the thermostat means that oil is always bypassing the cooler. The thermostat CLOSES when it gets warm, unlike your water thermostat which opens. If you intend to remove the oil thermostat (don't, as already posted), you also need to plug the bypass hole in the cooler.

NZConvertible

Not entirely true. The coolant thermostat is not only there to warm the engine up faster but also to regulate the engine's temp by opening and closing so coolant flow matches cooling load. The oil thermostat is much simpler; it simply opens at ~140degF and then stays fully open while the engine's running, since the oil temps never drop that low again while running. It's just for faster warm-up.