| it’s the gaskets! watch out ! can turn over or swap side to side , maybe there is better instruction now .. somewhere . This was long ago . I remember looking at impressions on old gasket , but wondering if they had been put in right . By someone else ,,- a mistake ? Carb didn’t work right on sec as found as stated , but however ,,after i Figured it out , it was perfect after getting gaskets right . Big heads up to know about this issue . Then you figure it out . Maybe if someone knows a carb is running well and is torn down they take a magnified pic for good guy Mr Merritt to add to tech section — on this exact subject of venturi gaskets . jg Sent from my iPhone On Dec 5, 2023, at 7:45 AM, John Nowosacki <jsnowosacki@xxxxxxxxx> wrote:
I see the 'bumps' or 'keys' on the bottoms, thanks. That makes the instructions in the manual about keeping them oriented more mysterious to me, if they actually can't be put in incorrectly due to these 'bumps'?
Here are pictures of the primary and secondary venturies.
You can see notches in the bases. Those notches mate with
locating bumps in the carb body.
They can not be installed right on left or left on right.
Bob
On 12/4/2023 7:29 PM, John Nowosacki
wrote:
I was reading
my 60 Service manual over the weekend, and I saw something
interesting in the carb section on AFB rebuilding. There were
instructions highlighting the fact that the venturi assemblies
were not interchangeable left to right. Not an issue during
any of my rebuilds over the years, as I always did one side
and then the other, and did not have them both out of the carb
at the same time when cleaning them and installing new
gaskets, but since the gaskets seem identical, what is the
difference between the left and right side assemblies? Are
there identifying marks/numbers on them anywhere? Next time I
take mine apart, I'd like to double check that they weren't
switched side to side during some past rebuild before me,
since I didn't acquire my car until 1998, some 38 years after
it was originally put together. I'm guessing that the written
warning was there because the assemblies could be reversed in
their positions and the carbs would still go back together,
but would somehow be wrong and not operate as designed?
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