Why multiple carbs?

[hibbert6]

Why do outboards use multiple carbs, if keeping them tuned/timed/whatever is such a hassle? I know many sports cars used to do that, too, but why not a single carb (maybe a progressive 4 bbl) and an intake manifold, like most cars w/o fuel injection have?

Dave

 

[coolguy147]

Re: Why multiple carbs?

i think its because then you will get better accerlation

 

[tashasdaddy]

Re: Why multiple carbs?

because most are 2 strokes, the small 2 cylinders have single carbs, but the larger has multiple carbs, one for each cylinder.

 

[JB]

Re: Why multiple carbs?

More power from less weight and displacement; plain and simple. Just like high performance pre-EFI car engines.

 

[robert graham]

Re: Why multiple carbs?

On 2 stroke motors the length of each intake manifold runner is critical to the operation. With a seperate carb for each cylinder allows each manifold length to be exactly the same. the 2 strokes also use much shorter manifold lengths. note the long manifold runners on the new 4 stroke motors allowing for better torque/low end performance. Good Luck!

 

[Silvertip]

Re: Why multiple carbs?

Carbs are not a problem but people make them a problem by not using fuel system treatments like Stabil or Sea Foam. They simply neglect the fuel system which gums up the carbs, causes the engine to run lean and then a burn down occurs. It is so simple and comparatively inexpensive to use the stuff religiously.

 

[coolguy147]

Re: Why multiple carbs?

thats why i put stabil in my mercury and let it sit like a good boy

 

[JB]

Re: Why multiple carbs?

thats why i put stabil in my mercury and let it sit like a good boy

Obviously a Cool Guy.

 

[coolguy147]

Re: Why multiple carbs?

lmao^

 

[hibbert6]

Re: Why multiple carbs?

OK, I get it. Thanks!

Dave