Join Date: May 2007
Location: Bangkok, Thailand
Temps will obviously vary depending on ambient temperature, setup and what the bike is used for. I made these radiators for myself primarily as I had the Hord engine to cool. Total square surface area is actually a little less than OEM but the cores are 32 mm thick, way thicker than stock. Also, as we know, a significant portion of the stock side mount rads are shrouded by the engine hangers.
I've not had an opportunity to run these front mounts on an OEM motor, I used them to break in the Hord motor and they performed brilliantly. Naturally the motor developed a lot of heat new so I removed the thermostat and fitted 2 x 4" SPAL fans to the lower rad. Now that it's run in a bit I'm not seeing temps much above about 77*C (170*F) on the open road and the fans barely kick in at the lights. As I don't track the bike I'm planning on re-installing the thermostat and then seeing if 1 x 4" fan is sufficient. Terence was kind enough to test the rads with the thermostat in place and so far he's not running a fan. Obviously if the bike is stationary for long enough with the motor running it will overheat.
Last edited by JBs_SP3; 07-14-2011 at 11:00 PM.