If I can chime in on the Oil Cooler discussion. As far as "over-cooling" is concerned - Z1 Motorsports in there Oil Cooler kit warn against it and highly recommend something called a "Thermostatic Sandwich Plate".
I'm guessing this only lets oil go to the cooler once a certain temp is achieved.... Not sure.
If that is true - that would eliminate the need to "duck tape"?
Trying to figure this out for myself too.
Here is a link to the Z1 Cooler:
http://www.z1motorsports.com/g37_370...oducts_id=4135
- At the bottom of there description they talk about the thermostatic plate.