oil blow by

[Tom McInerney]

I just noticed that I am getting oil leaks from around the base flanges of the chrome tubes that come off the manifold and attach to the bottom of each carburator. The worst leaks are from the front tubes on each side. Due I have a serious engine problem or just bad gaskets or O rings. I am not sure how this tube is sealed to the manifold. Thanks

[Udo]

The chromed tubes between the head and the carb? There are o-rings  as sealant between the tubes and the head. You can loosen the tubes at both ends, remove them, and insert new o-rings.

[Jeff K]

I'm guessing it is fuel gunk not oil. Put new orings in #123

[Ricky-D]

Yep. Get a set from redeye-tech on E-Bay. I think they're 13 bucks. 

[Jeff K]

Or $1 from ace hardware.
Dash #123

[Tom McInerney]

You guys are great!!  thanks  Tom

[Tundra]

Yup, what they said. It's a very easy fix. (redeye-tech) on e-bay. or e-mail him @ redeye.rich@gmail.com
  No affiliation, just a happy customer.

[Tom McInerney]

I had trouble locating these at Ace hardware. The orings only went up to #99. i THEN WENT TO ADVANCE AUTO PARTS AND THEY HAD A LOT OF DIFERANT SIZES BUT NO #123  wHAT IS THE OD AND WIDTH OF THESE THINGS? SORRY FOR THE SPELLIN ERRORS   tOM

[Bone]

ACCO Hardware had the #123 rings. I always look for things in national chain stores I might need on the road.

[Sharkey]

AS568B Nominal Inches Actual Inches Actual Millimeters 
Number ID OD CS ID CS ID CS 

-123 1-3/16 1-3/8 3/32 1.174±.012 .103±.003 29.82±0.30 2.62±0.08 

I got a pack of 25 for around $10 at Granger. Get the Vitron rubber orings. They are gas and heat resistant.