Is it necessary to ger an Oil Cooler?

Originally Posted by Rusty

Background. I have the Z1 34 row oil cooler. Been running it for years. My opinion. There is only 2 oil coolers to get. The Z1 or the FI 34 row coolers. Get a 34 row cooler. The smaller coolers will help, but may not be large enough sometimes. You can always add some block plates if the oil is too cold.

The stock oil filter will fit with the thermostatic plate. Which is a must, unless you are a totally track car. When closed. The plate is still open about 10%. This is to warm the oil in the cooler. The why to this is because you don't want cold oil flowing into a hot motor when the plate opens fully. This would cause some thermo shock to some engine parts.

Oil flow.

When cold. From the oil pump to the thermostatic plate. (About 10% of oil will flow to the cooler and back to the oil passages.) From the plate to the filter. Filter to the oil passages.

When hot. From oil pump to plate. From plate to cooler, Cooler to filter, Filter to oil passages.