I just received my Griffen radiator from Summit and was thinking about what size hose to use  with it.  Dennis Haverlah welded AN -20 bungs on his Griffen an I blieve is flying with 1 1/4 inch hose.  My engine which I bought from Tommy James flew with 3/4 inch hose and has AN-16 NPT bungs on the front housing for input / output hose hook up.  

 

So can I get adequate cooling with he original 3/4 hose set up, or will cooling in theory be improved by going with the bigger hose?   160-180 hp is all I ever will run in this airframe... 

 

Thanks for any input...

 

Doug Lomheim

9A; 13B FWF

OK City, OK