Increased cooling sounds necessary to Orma's setup. I have never seen advanced timing cause overheating. Pre-ignition yes, but not overheating. Retarded timing will cause overheating.
Orma I would also think about increasing the size of your oil reservior/oil pan. Especially since more than likely your turbo now shares that, and our VW engines it is still responsible for something like 75% of the cooling. I would also keep my inlet ports the SAME size and enlarge the EXIT to create more of a vacuum effect to draw in additional air and improve your heat exchange. Also think about some auxilary NACA ducts to flow cooling air separate from the cooling ports thru the cowling area to remove exhaust and othe engine heat. Colin & Bev Rainey KR2(td) N96TA Sanford, FL crain...@cfl.rr.com http://kr-builder.org/Colin/index.html
