What's really important is flow rate. Size dosen't matter as much as how fast the coolant goes thru the rad. Too fast and it dosen't shed the heat, leading to overheating. Some of the rate is controlled by the thermostat, as well as the pump. But the rad itself is an issue also. So ask about flow rate at the shop. Ray -------------------------------------------------------------- Ray Jones, Jones Ridge, in the Ouachita Mtns near rural Mena, Western Arkansas. All Y'all come visit, Y'hear? We'll set onna porch and sip a few! > From: "Fern Rivard" <crc@xxxxxxxxxxxxxxx> > Date: Wed, 27 Oct 2004 07:50:18 -0700 > To: "chrysler300" <chrysler300@xxxxxxxxxxxxxxx> > Subject: [Chrysler300] Help re recoring rad for 62 300 > > > I went to our local radiator shop to get the radiator for my 62 300H > rebuilt but they tell me that they CANNOT get the original 5/8" tubing > anymore! Is this fact or am I being given a snow job by them? If this > is correct, then what is the best approach to rebuild this rad? They > suggested using 1/2" tubing while another rad shop in another town > suggested going with the larger 3/4" tubing as it is supposedly more > efficient but also more expensive. My car has factory a/c so need the > best cooling possible. > Fern > > > > > To send a message to this group, send an email to: > Chrysler300@xxxxxxxxxxxxxxx > > For list server instructions, go to > http://www.chrysler300club.com/yahoolist/inst.htm > Yahoo! Groups Links > > > > > > > > > ------------------------ Yahoo! Groups Sponsor --------------------~--> Yahoo! Autos. Everything you need to know about buying or selling a car. FREE Quotes, 360° Tours, Research, Blue Book, Compare Vehicles, Buy Used http://us.click.yahoo.com/kEZsdA/bwnGAA/YiGOAA/8LmulB/TM --------------------------------------------------------------------~-> To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/