Nick,My info was that a "light"coat of FLAT BLACK would enhance the radiation of heat by an appreciable(?) margine that made it well worth doing. Gloss, semi-gloss and other colors impeded the flow of heat and served as mils insulators. I do't think heat radiation is the only concern or motivation to apply paint. The corrosion angle comes into play....especially since you mentioned Pa. I was raised there.All those pretty silvery alu. condensors should be flat black, I guess.2 cents from long ago.John
I would just drain the rad's Nick .... dump the coolent into a CLEAN bucket and reuse. Use a test strip after your first run.Ron
That is great radiator to cram into small space....looking good. Did they quote how many BTU it can handle?About pressurize radiator before install in bus....yes by all mean. Pressurize air test at whatever your radiator builder said of psi. Coolant will leak quicker than plain water. If you fill with new coolant to pressure test...it may show that your gasket holding well due to slippery fluid.FWIWSojourn for Christ, Jerry
Nick,For the record book I know you are assemblein:What is the temp of the water going in and out after a hard pull. Exhaust back pressure should be less than 3.6 psi. according to DD. Did you ever measure that and how did you do it? Does your turbo make 18 to 21 psi. manifold? 8V92 DDEC III, right?Thanks Nick, they look awsome and HUGE. I think you will only be able to overheat those with an open flame.John