which carb to upgrade/replace too

[bigtoe]

Hi my carb has now passed its end of life. A good boat mechanic has now told me. we cannot get it to maintain a constant . They stripped it down and rebuilt it but they say the jets are now proved to be worn.
So my thinking is what to replace it with , it's a holly 082500 on a 3.0L Volvo Penta block. Blocks been replace but the carb is existing 1998/1999 manufacturer .
Any thoughts guys or any one replaced there's with something better and cheaper ( I can only hope)
many thanks

 

[Scott Danforth]

It's a Holley 500 CFM 2300.

There are only 6 moving parts

Get a new mechanic. Seriously, get a new mechanic

Only once have I ever had a Holley that could not be simply rebuilt. And that is because it was acid dipped

Jets are replaceable, and only $2 each

Bowls gaskets are about $2, so are metering plate gaskets

The issue is most mechanics working today do not know how to work on carburetors

 

[bigtoe]

It's a Holley 500 CFM 2300.

There are only 6 moving parts

Get a new mechanic. Seriously, get a new mechanic

Only once have I ever had a Holley that could not be simply rebuilt. And that is because it was acid dipped

Jets are replaceable, and only $2 each

Bowls gaskets are about $2, so are metering plate gaskets

The issue is most mechanics working today do not know how to work on carburetors

Well he really did get it running sweet as , I’d never heard it start and sound so smooth . Then when we opened up it kept dying.
He came out on the boat with some gauges and re set it up , sounded again really sweet. Went for a run or two and all was great, dropped him back at the quay and then a run or two later , same issue , then it would not hold idle so I had to speed it up . Just seemed to dance all over the place with problems .
I’m in the uk and I know the refurb kit we get here do not include jets . It’s a Volvo dealership and like I said he did seem to know what he was talking about

 

[Scott Danforth]

What is your compression?
What is the fuel pressure?
What is the timing set to?

Dying on WOT is most likely fuel delivery, not the carb

Doubt the carb need replacement. Been wrenching on Holley carbs for over 50 years

Summit racing can get you jets in 3 days from the states. Can even get you in touch with real gear heads in the UK.

Most you need to rebuild the 2300 is 3 gaskets, a needle and seat cartridge, a new PV, and a new acceleration pump kit