89.327 Charge cooling.§ 89.327 Charge cooling.
For engines with an air-to-air intercooler (or any other low temperature charge air cooling device) between the turbocharger compressor and the intake manifold, follow SAE J1937. This procedure has been incorporated by reference. See § 89.6. The temperature of the cooling medium and the temperature of the charge air shall be monitored and recorded.[59 FR 31335, June 17, 1994. Redesignated at 63 FR 56995, Oct. 23, 1998]