Hey! There is lots of talk about using an oil cooler bypass valve and the role it plays with keeping the engine at it's operational temps. But! No one said where to buy the external unit.
I installed an aftermarket oil cooler not knowing this fact.
My question is, where can I purchase an external oil bypass valve for my rx7 oil cooler? It has to operate at 60-65 degrees Celsius temp.

Thanks!

 

Can be ordered from the local speed shop or a place like Summit Racing:
https://www.summitracing.com/int/sea...il-thermostats

65C is a little cold. Most oils want to be operating at around 80C or a bit higher and you'll see most oil cooler thermostats are sold in that range.

Just curious as to why you fitted an aftermarket oil cooler. Upgrading from a 1st gen beehive?

 

Hey Arron! love your videos and progress on the Cosmo.

Yes, You are right about the operational temperatures. I found out more about them on another topic. Fully opened at 80C or so with minimum bypass.
I upgraded from the Beehive to an aftermarket oil cooler. I placed it forward and low in the front air dam. I'm just going to leave it as is. This is my summer car and I always let it warm up a little before I drive it. For driving conditions the car will experience 8C to 28C degrees max here in western Canada. Do you agree it shouldn't over cool in the summer?

I'm now looking at getting an oil temp gauge. but I like the stock look of my car inside as well.. :P

I asked this question about the oil bypass valve on another topic:
https://www.rx7club.com/3rd-generati...cooler-870629/

 

You can't overcool since the thermostat will just begin to bypass the cooler if the oil temp falls too low.

In all honestly you don't really need an oil temp gauge unless the car spends time on the track. Just to verify the operation of the cooler and thermostat you can temporarily wire one in and then remove it. Get an electric gauge then wire everything to a plug under the dash somewhere so if you are ever curious as to the temps, you can just plug in the gauge and suction cup it to the window for a few hours.

 

But the Oil cooler I have installed on my car is an aftermarket (no Bypass valve) cooler. The OEM one on the donor car was pretty corroded and damaged.

I won't get an oil temp gauge. I'll run it as is. I was thinking about putting one in place of the digital clock, seeing how it is not working 100%. Tried to get it working but made it worse :/

 

Hence the need for the thermostat. If you do drive without it, you will find your oil temps fluctuating wildly. Especially on the highway where they will easily be excessively cool. Overly cool oil tosses fuel economy, power and lubrication properties away. If you fir the thermostat, you won't have to worry about it.

 

Now you have me worried :P
I thought I was okay without it.