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Orig mercrusier carb vs rochester

They are similar--unless you m

They are similar--unless you mean an automotive carb (which is a no-no).

Jeff
 
The mercarb and the 2gc Roches

The mercarb and the 2gc Rochester are essentially the same for the 140. The only trouble is if the 2gc you have is the small bolt pattern. If so a Mercarb won't fit.
 
this is for a boat I did notic

this is for a boat I did notice the bases of the two were different. I have amid 80s 120 merc with the rochester I should just have to switch exh.manifolds is this correct ?
 
"The Rochester carb will have

"The Rochester carb will have two mixture screws, one per barrel, while the Merc carb has one common to both barrels."
 
Mr. Gasket used to sell an ada

Mr. Gasket used to sell an adapter to fit either carb to a manifold. The single mixture screw is used to save $$$ since the air and fuel all go to the same place. Either can be used if they are MARINE carbs.

Jeff
 
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