Carb insulator

[24kilo]

I got a Vac leak,I might have a cracked insulator and I'm getting ready to change gaskets. All I can find is spacer to mani and spacer to carb gaskets. No one has the insulator, So how many of you carby guys are running no insulator? and Does it matter?

[NAJ]

Since no one is answering your thread I will give you what info I know.Going way back in my memory Chrysler used the spacer to keep heat away from the carb. They had numerous heat soak fuel evaporation problems that they never were able to correct. When the vehicle was shut off fuel would evaporate out of the fuel bowl creating long crank times on restart.Chrysler ended up masking the problem by doing away with the mechanical fuel pump and installing inline electric fuel pumps (A TSB and Dealer Repair) so that when the key was turned on the pump would fill the bowl and the vehicle would start.
Due to all of the problems Chrysler had with thier carburators they went overkill when they went to TBI. Thier first setup was a high pressure setup and they did not go to low pressure TBI until they were sure they had all of the problems corrected, unfortunatly the injectors they used in the low pressure TBI were junk.
It has been way to long since I worked on a carburated 2.2L but removing the insulator may change the airflow thru the venturi's which could result in a rich/lean condition.
Hope I answered your question on why it was used unfortunatly I do not have the answer as to weather you can delete it.
I am sure someone will answer that for you.