In doing research I come across how the dual oil coolers badly overcool the oil. The explanation is simple, the oil thermostat doesn't really shut off oil to the coolers, but provides a bypass and this is not sufficient. Shrug, TADT, cut out an oil cooler, switch to an expensive alternative.
So, in a thread on oil coolers, and low oil temps, someone linked to a mishimoto oil cooler sandwich plate. Nice looking piece. Slightly different layout. Looks like it not only provides a bypass, but restricts flow to the coolers. I dig the sandwich plate I purchased years ago for my twin cam, and sure enough, same thing, but not as nice as the Mishimoto.
Order one up on Amazon.
Ordered a pair of little gauges
Set up a little test.
62-65 degrees [drops slightly from cracking garage door]
car idling, standstill
the oil temp gauge is too slow to react so the temp measurements are from a handheld non contact thermometer aimed at the oil pan. I have the gauge data, also.
see for yourself. the stock thermostat is a POS, it is bleeding warming oil in just a few minutes, where the Mish. unit basically never does. While it is not that much different vertically, look at the time scale horizontally, there is nearly ten minutes for the stock setup to get across a given temp line, and that is without any air through the coolers. It will get worse when moving. The radiator fan comes on 10 minutes sooner.
At the end of the last test revved the engine up and measured again, the oil coolers do indeed get warm when pushed and hot with the mish unit. I will try it after it cools down again to see if the higher revs and force of the oil pump makes it flow more before the thermostat opens. It will still be far better than stock.
155 bucks all in[actually 136 , I used the stock sandwich plate adapter threaded piece, wasted 18 bucks on the mish piece]
oh, and two m20 to 5/8 BSP adapters and a couple of copper washers,
will use the 1/8 NPT port for the temp gauge