flashbsd said:
bill do you sell the insulator gaskets? is there any issue with heat being held on the head instead?
I do sell em.... concidentally.
no ill effects from insulating inlet manifold. the insulator 'delays' in inevitable heat soak from conducted heat from the cylinder head into the inlet manifold, where the engine inlet air temp sits. (sat in a hot oven)
slow speed running in traffic etc, been parked etc will always heatsoak into anything which can absorb the heat.... metal inlet manifold on hot cylinder head for example.
slow moving traffic will allow this heat to convince the air inlet temp sensor the incoming air is very hot (>60'C not uncommon) where as it is'nt that hot really, but the sensor is sat in an oven and throttle opening and airflow is low in these conditions so it does'nt even get much of a cooling breeze to tell it otherwise.. ECU thinks.... blimey its hot... and configures accordingly.
£35 insulator gasket delays this onset, with inlet mani's air temp sensor.
regards
bill