There are TONS of different Q-Jet models, but for the most part, they
all run fat on the secondaries. You may not need to jet them. If so,
you'll prolly have to pull the jets, get the nums on them and talk to
some guys at perf auto parts shops, where, if you're extremely lucky,
you can enable the 'Geezer Factor' and get some wisdom from some old
fart. Alternately, they may have a jet chart. So might the web. I would
run them first. If you can't pull WOT rpm, other things being equal,
they're lean.
JR

Rainmann wrote:
Greetings,

I am in the process of rebuilding both of the Merc 350's in my boat.
I have added some performance mods, so I know I will most likely need
to re-jet my Qjet carbs. I am seeking some advice for a good starting
point on the jets. Below is a list of the high performance add-ons.
Thanks!

Qjet 17059280
Edelbrock performer intakes
MSD everything
Comp roller rockers (1.52)
Comp Extreme Marine cam 262/268, .462/.477
Tuned GLM manifolds, open exhaust
K&N flame arrestors

Not real screamers, but should have significantly more performance
over stock. Any advice will be greatly appreciated! thanks

--Ray



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