Holleys are supposedly very sensitive to float levels being set properly. Not
knowing how the motor was running before, it is hard to guess for what he may
have been compensating. Was it running rich? I believe the carbs are designed
such that the secondary is set about 1/16 below the level of the primary in
terms of where the sight window sits with respect to the floor of the bowl. I
think that is to keep the secondaries for functioning before they are supposed
to. I vaguely remember reading that the weight of the fuel has a major impact
on when and how the jets function, and too much fuel in the bowl equals too
much fuel weight. I read all this a long time ago in the Fisher book on Holley
carbs. A great resource if you have not read it.
Depending on when your carb was made, it may or may not have power valve
blow-out protection in it. Holley makes a retrofit "kit" to add that to the
older carbs. As long as you have the carb apart, I would suggest you add that
protection if it does not already exist. The kit is pretty cheap.
I expect the new gaskets you are installing are the "blue" ones. They seal
better than the old ones, make taking things apart a lot easier in the future
and I think are reusable (as long as they do not tear).
Gene
----- Original Message -----
From: "Jay Laifman" <jay.laifman@gmail.com>
To: "tigers@autox.team.net Den" <tigers@autox.team.net>
Sent: Wednesday, June 12, 2013 12:00:59 AM
Subject: [Tigers] Holley Rebuild - float bowls
So I've proceeded a bit more on the carb. The back float bowl was a disaster.
The gasket was really stuck on the carb. I used the chemical gasket remover.
But it wasn't all that much help. And, the cleaner and some of he small
scrapings ended up in the small holes. What a mess. I think I've cleaned
them all out now.
On the front float bowl, that came off and cleaned up easily enough. But the
next part, the large piece that covers the power valve seems as stuck as the
rear float bowl gasket. I'm thinking I might just leave that one alone at
this point. Unless someone tells me it is critical to replace the power valve
and whatever else is in there.
Also, is there some reason my dad might have had the floats really high? The
rear one was a little high from the "parallel to the ground" that the Holley
instructions suggest. But the front one was really high - almost to the top.
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