Re: [OMC-Boats] new member...1969 SeaSport120

I suppose anything is possible but I've never heard of the OMC Chevy II
Four coming from the factory with Holley carbs (of any configuration).
Most likely the Holley's you have aren't USCG approved for marine use.
Most of the OMC 120 hp versions used twin Carter, single barrel, RBS'es.
(A pretty awful carb as used on the old Ford Maverick, I once owned, so
I'm not surprised someone got frustrated and put something different on
your boat.)

Earlier (1964-65) OMC also made a 110 hp version of the 153-4 that used
a single, carb manifold using a one barrel, Rochester BC carb (marine
rated). Then in the early seventies (72-74?), OMC finally got it right
when they made a 153-4 (120 hp) using a single twin-barrel, Rochester
2GC, (which is often found on hot-rods with 3 deuces). See model
info/numbers on my website at:
http://hhscott.com/evinrude/stringer_models_72.htm

For the least trouble, if it were mine, I'd look for a used 2GC
manifold, and get a marine rated Rochester 2GC on there. Very versatile
carb, plenty of parts and support out there for it.

Lee Shuster
Salt Lake City

-----Original Message-----
From: omc-boats-bounces@...
[mailto:omc-boats-bounces@...] On Behalf Of
tpaquette@...
Sent: Monday, November 12, 2007 8:01 PM
To: Evinrude & Johnson Boats of the 1960's and70's; Evinrude & Johnson
Boats of the 1960's and70's
Subject: Re: [OMC-Boats] new member...1969 SeaSport120

Lee REALLY knows his stuff. Especially about the engines drives etc.
Are you sure they are orginal carbs? Odd Lee wasnt aware they came as
OEM equipment.

Anyway best of luck to you Mike

>
> From: "Meredith" <meredith@...>
> Date: 2007/11/12 Mon PM 03:32:16 EST
> To: "Evinrude & Johnson Boats of the 1960's and 70's"
> <omc-boats@...>
> Subject: Re: [OMC-Boats] new member...1969 SeaSport120
>
> Thanks for the reply...great site you have. They are Holley carbs on
this inline 4, and appear to be original. A little concerned as to
safety, as float chamber on one overflowed onto manifold as I was
running it yesterday on test. A lot seems to be riding on that ballcheck
valve. Float was ok. What history of fires with these boats?
>
> Mike
> ----- Original Message -----
> From: Lee Shuster
> To: Evinrude & Johnson Boats of the 1960's and 70's
> Sent: Monday, November 12, 2007 8:17 AM
> Subject: Re: [OMC-Boats] new member...1969 SeaSport120
>
>
> Are you sure those are Holleys? Usually they were Rochester single
barrels.
>
>
>
>
------------------------------------------------------------------------
------
> From: omc-boats-bounces@...
[mailto:omc-boats-bounces@...] On Behalf Of Meredith
> Sent: Monday, November 12, 2007 6:20 AM
> To: omc-boats@...
> Subject: [OMC-Boats] new member...1969 SeaSport120
>
>
> I recently aquired this project boat in rough shape, and have been
able to get it started. Biggest problem seems to be in carburetors...for
some reason the design called for dual single-barrel Hollys. It will be
a trial and error chore to get them synced and figure out the choke
mechanism.
>
> Mike in Oregon
>
>
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Received on Tuesday, 13 November 2007