Yan
What RPM are you at and what are you considering as high speeds? I have done both a rear radiator in my initial conversion and this year swapped to a RH front mount and in both systems have seen similar temps that you have mention but in Florida weather. My experience is that holding the RPM @ 3K for a cruising speed can drive my temperatures upward in the 215~220F range and if maintaining @ 2K RPM on the highway is 205~210F.
Other factors to consider
- AIR in the lines (Took me 1 day of burping my system to get all the air out)
- Spark plug gaps (This can cause a hotter spark)
- Air/Fuel ratio
- Exhaust element (muffles tucked close to motor, back pressure, heat shielding)
- Dyno tune
Quote:
Originally Posted by Yan2947
What are your normal and high operating temps of the engine on a 90 degree day. On normal days (70 degrees and humid) I stay at 200 degrees but on 85 plus days I have seen my temps go to 220 and start to creep up to 225. I also know (or think) that 225 is really not too bad for these engines that like to run hot but any hotter and one has to worry. I know my radiator from Ron Davis is large enough for about 416 hp even though I am only about 350 hp (untested). I have had the car up to some high speeds on the hot days and I stayed above or at 220 degrees. Could not drop down to 200 until I met the speed limit. I have decided to add a small radiator in a new fiberglass front spoiler (935 model) from better bodies motorsports. Once I mount the spoiler I going to mount a radiator there. I have thought of adding a subaru wrx hood scoop to the wing. The 4" tall scoop would direct much more air into the rear radiator. Perhaps I should do that before I add the front spoiler. What do u think? It certainly won't look too stock.
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