Rotary Car Club - View Single Post - need input on my e-fan idea.

jtbshaw · 03-13-2008, 10:47 AM

There should be two locations that are readily available. It has been awhile so forgive me if I am incorrect on the one on the upper radiator hose neck (the water pump housing). There should be a plug there that you can simply remove and screw in a sensor. If not, the temp sensor for your gauge should be back there by your oil filter. You can unscrew that, screw in a Y-fitting from your local hardware store, and replace the OEM sensor in one spot and place the new sensor in the other. I have used a few different sensors and all worked. I have used another RX7 OEM gauge sensor, and Honda Civic sensors (the fan temp sensor, not the gauge sensor). The sensor that you pack in the radiator is inconsistent and can easily send a false (cooler) reading and not turn your fan(s) on. I don't recommend using those.

The fans that I have used plenty of are these: http://www.jegs.com/i/Flex-a-lite/400/390/10002/-1

There is a Mr. Gasket one that shows to move a little more air for $1 less. Jeg's also lists several thermostat switches and such.

The only thing that I just thought of is that I have always removed the A/C from my FBs. The A/C condensor is not in front of the radiator in this case. If you still have your A/C setup, you will have to use the fans as pullers, not pushers. Either way, on a FB radiator, to make these fans fit, you will have to straighten out the sides that curl inward. Once you have done this, the dual fans fit perfectly.

Let me know if this helps. If you need more info, I can post later. Hope this can get you going though.

03-13-2008, 10:47 AM	#10
jtbshaw ORD - Old Rotary Dude Join Date: Feb 2008 Location: Pelham, AL Posts: 319 Rep Power: 18	There should be two locations that are readily available. It has been awhile so forgive me if I am incorrect on the one on the upper radiator hose neck (the water pump housing). There should be a plug there that you can simply remove and screw in a sensor. If not, the temp sensor for your gauge should be back there by your oil filter. You can unscrew that, screw in a Y-fitting from your local hardware store, and replace the OEM sensor in one spot and place the new sensor in the other. I have used a few different sensors and all worked. I have used another RX7 OEM gauge sensor, and Honda Civic sensors (the fan temp sensor, not the gauge sensor). The sensor that you pack in the radiator is inconsistent and can easily send a false (cooler) reading and not turn your fan(s) on. I don't recommend using those. The fans that I have used plenty of are these: http://www.jegs.com/i/Flex-a-lite/400/390/10002/-1 There is a Mr. Gasket one that shows to move a little more air for $1 less. Jeg's also lists several thermostat switches and such. The only thing that I just thought of is that I have always removed the A/C from my FBs. The A/C condensor is not in front of the radiator in this case. If you still have your A/C setup, you will have to use the fans as pullers, not pushers. Either way, on a FB radiator, to make these fans fit, you will have to straighten out the sides that curl inward. Once you have done this, the dual fans fit perfectly. Let me know if this helps. If you need more info, I can post later. Hope this can get you going though.