QJet issue / replacement

• Aug 10, 2018

• #1

dwna1a

Well-Known Member

PLATINUM Sponsor

Apr 23, 2012

5,980

James River

Boat Info

88 Weekender 300 "Seahorse"

Engines

Twins 350

One of my Rochester Carbs is in rough shape, it's off for a rebuild and the first reports are bad. It's base is going to have to be replaced. I have a spare carb for parts.

What is the replacement carb for a 88 350?

 

• Aug 11, 2018

• #2

hottoddie

Well-Known Member

Jan 11, 2012

2,228

Boston/Cape Cod

Boat Info

1986 Sea Ray 390 EC
Garmin 4212 Chartplotter
Garmin 24 HD Radar
Garmin 546s Plotter

Engines

454 Crusaders

Q jets are "spread bore" carbs. Your small blocks use the 650cfm version. I believe Eldebrock makes a spread bore replacement that works well. If it were me I'd have the Q jet rebuilt and keep the boat original. Q jets are good carbs if maintained correctly.

 

• Aug 11, 2018

• #3

dwna1a

Well-Known Member

PLATINUM Sponsor

Apr 23, 2012

5,980

James River

Boat Info

88 Weekender 300 "Seahorse"

Engines

Twins 350

We are trying to but it may be to far gone. I thought we had rebuilt this carb in the past but it's obvious now that I was wrong.

 

• Aug 11, 2018

• #4

JVM225

Well-Known Member

Apr 8, 2008

6,560

New York

Boat Info

2002 410 Sundancer, Monaco Edition.

Engines

3126 Cats.

Save the Qjet if you can. If not then go with the Edelbrock 1409 high will also give you an electric choke which is nice. Get the keyed power from your coil and you’re good to go.
I repowered my old Boat back in 2012 with two new Mercruiser motors and those are the carbs the motors came with.
We’ve also installed them on a friends boats and they always worked flawlessly.