I would love to buy a oil cooler but it has been slow at work and money is tight. When I run the 183cc buggy at night it runs awesome or in the early morning. As long as it is in the low 80s it runs fine. I did put a cooling finned heat sink off a Honda blower transistor. I JB welded it to the bottom of the case.
http://www.ebay.com/itm/CIVIC-CRV-EL...#ht_2735wt_807