1992 mercruiser 3.0 l 115 hp

[MEATBALL0309]

hi i have a 1992 mercruiser 3.0l motor and i was wondering how to tell what kind of carb i had on it. looking to rebuild the carb this winter it will be my first carb rebuild and trying to gather info on this.thanks

 

[fat fanny]

Re: 1992 mercruiser 3.0 l 115 hp

1 air idle mixture screw it's a mercarb, 2 air idle mixture screws it's a rochester

 

[MEATBALL0309]

Re: 1992 mercruiser 3.0 l 115 hp

thanks i will take a look this weekend unfortunately it is stored 1hour and 15 minutes from my home. but thanks for the timely response

 

[Don S]

Re: 1992 mercruiser 3.0 l 115 hp

You have a Mercarb. Merc stopped using the Rochesters on the 3L's in the early 80's.

 

[Bamaman1]

Re: 1992 mercruiser 3.0 l 115 hp

Last time I rebuilt my Rochester carb, I think I had to get a carb kit that went on a 1967 Chevy 307 engine.

Mercury was ridiculously slow to upgrade anything on their engines--until competition forced them to. Yamaha outboard threw them on their ears when they hit the U.S. market around 1984--forcing big changes at Kiekhaufer.

It's hard to believe that the 3.0, 120 hp and 140 hp Mercruisers are Chevy II motors dating back to 1962. It's even harder to believe that we're still using those old iron monsters. You'd think that some modern 4 cylinder engine with fuel injection could come up with enough torque to be a marine engine without the weight of the 3.0. I guess manufacturing cost also comes into the equation.

 

[bryon olander]

Re: 1992 mercruiser 3.0 l 115 hp

i bought an 1992 maxum 1800sr that had a 4 cylinder in it but is now gone. is it hard to put a vortex 4.3 6 cylinder in it? do i have alot of modification to do?

 

[Bondo]

Re: 1992 mercruiser 3.0 l 115 hp

i bought an 1992 maxum 1800sr that had a 4 cylinder in it but is now gone. is it hard to put a vortex 4.3 6 cylinder in it? do i have alot of modification to do?

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