Plate between manifold and carburator

[hannez82]

Hi,

I'm assembling a mercruiser 350 from 96(pre vortec) and I found this plate between the manifold and the carburetor(Weber 4 b). I can't find the plate in the manual and I wonder what it's for and if I should keep it.



/ Hannes

 

[hannez82]

Re: Plate between manifold and carburator

I wouln't use the oem manifold, instead I have a edelbrock manifold. I thinks its a #3706 with the egr port plugged

 

[Capt Ken]

Re: Plate between manifold and carburator

It was originally used as a insulator. Gasket below and gasket above it. They use to just use a thicker gasket. Just someone's brain bubble. BTY, vortex engines started in the late 80's. Yours is just a later one.

 

[hannez82]

Re: Plate between manifold and carburator

It was originally used as a insulator. Gasket below and gasket above it. They use to just use a thicker gasket. Just someone's brain bubble. BTY, vortex engines started in the late 80's. Yours is just a later one.

Hi,

I'm not native english spoken so I don't understand your answer fully. You say "originally", does that mean that I don't need it anymore?

What does a insulator do between the carburetor and the manifold? Why do they need to be isolated from each other?

Best regards, Hannes

 

[achris]

Re: Plate between manifold and carburator

It is insulator for heat. Weber carburetors suffered very much from heat coming from the engine into the carburetor. Just continue to use the insulator, with new gaskets. You are correct, the service manual does not show the plate, but the parts diagrams do...

Chris...