deejayel
05-09-2014, 10:03 AM
Summer is coming fast here in LA, and I need to cool off.
Rotax 618, warp drive 3blade square tip, wot set at 6800, egts are fantastic in all ranges. 80/20 coolant mix, gas premixed 91octane 50:1
I have confirmed my T-stat opens fully at 135. I have "calibrated" my water temp gauge and it indicates 10deg higher than actual water temp.
I had the 618 rad installed just forward of my grove gear on 1" blocks. Temps stayed ok, allbeit on the high side. 175-180.....
I purchased the Murle Williams aluminum radiator looking forward to the "10-20deg" advertised lower temps. I also ordered the kitfox scoop for looks mostly.
Installed the rad and the scoop. Looks great! But too Hot! I figured the smaller rad and the scoop would negate some of the advertised cooling, but instead, I ended up a bit hotter than orginal. So now Im pushing 190-200. And the OAT's are not even up to max here yet.
Called MW. He recommended I remove the T-stat. That seems to lower the temps a few degrees. He also wants me to remove the scoop. I like it too much to give up and pull it off just yet.
I'm going to try some magic coolant stuff? I will add another rad inside the cowl somewhere to add volume and and subtract a few degrees?
I also have a CHT installed and I need to confirm what the gauge indicates, but my CHT's stay just below 100deg C...
Options? Opinions?
Rotax 618, warp drive 3blade square tip, wot set at 6800, egts are fantastic in all ranges. 80/20 coolant mix, gas premixed 91octane 50:1
I have confirmed my T-stat opens fully at 135. I have "calibrated" my water temp gauge and it indicates 10deg higher than actual water temp.
I had the 618 rad installed just forward of my grove gear on 1" blocks. Temps stayed ok, allbeit on the high side. 175-180.....
I purchased the Murle Williams aluminum radiator looking forward to the "10-20deg" advertised lower temps. I also ordered the kitfox scoop for looks mostly.
Installed the rad and the scoop. Looks great! But too Hot! I figured the smaller rad and the scoop would negate some of the advertised cooling, but instead, I ended up a bit hotter than orginal. So now Im pushing 190-200. And the OAT's are not even up to max here yet.
Called MW. He recommended I remove the T-stat. That seems to lower the temps a few degrees. He also wants me to remove the scoop. I like it too much to give up and pull it off just yet.
I'm going to try some magic coolant stuff? I will add another rad inside the cowl somewhere to add volume and and subtract a few degrees?
I also have a CHT installed and I need to confirm what the gauge indicates, but my CHT's stay just below 100deg C...
Options? Opinions?