I hear you guys. I hate last minute changes, as well, but I have been asked to specify this. I don't want to make the oil cooler ducting a huge deal, it just pains me to tacitly encourage people to cut foot wide holes in the unibody by specifying a big number. A lot of maximizing cooling efficiency is in ducting to force what air is coming in through the cooler, rather than setting it it open in the breeze. Small hole with ducting to seal in oil cooler > large hole with none. Holes in the unibody need not be the size of the entire oil cooler, but it sounds like that has been done a fair amount?
This is another area that regional experience comes into play. The guys out by me locate the oil coolers up front, as does Dirks, the engine builder I know the best. Mine is behind the right foglight opening. Few holes in the unibody around here
![](http://944spec.org/944SPEC/components/com_kunena/template/default/images/emoticons/smile.png)
. We seem to do fine up through the high 90's, but you guys see higher temps yet.
Give me your thoughts on what number we need here, or how to better balance things. I need to get this back to Will before he publishes it - so sooner is better.