19/08/2019
The pictures show two P40 oil coolers, new made by Replicore, modeled on the Harrison Mfr. 87-46-576 and 87-46-713. These oil coolers have the Harrison cross flow baffle which better moderates the oil temperature at the centre of the core in all air temperatures both at startup and in flight. Both of these coolers offer 1990 BTU/min/100F, a 9% improvement over the earlier Young Model at 1830 BTU/min/100F. The difference between these two Harrison versions is only in the design of the valve platform. One cooler has a "2-hole" platform to fit a DV8 Vernatherm valve, the other a "3-hole" platform for a Harrison rotary valve. Hot and cold pressure tested with additional oil flow testing carried to verify back pressure at different operating temperatures.