So I have a classic Holley 600 CFM carb coming in tonight, and I've never put a new carburetor on a car before. Is there anything I should do to it before I install it (cleaning, pre-adjustments)?
New carburetor preparation?
- Thread starter Chained_360
- Start date
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TrailBeast
AKA Mopars4us on Youtube
You hold it, talk to it and caress it lovingly while turning over and over inspecting every nook and cranny.
Then you throw it on the engine and see what it needs.
(unless it obviously needs a rebuild)
Then you throw it on the engine and see what it needs.
(unless it obviously needs a rebuild)
Alrighty then. I didn't think I had to do anything, but I figured I'd check.
ChrisPerry
Well-Known Member
Just be sure to install a new fuel filter. Inspect all fuel lines, wiggling them around while removing old carbs leads to leaks. I like to replace any short sections of rubber lines, no need to chance contaminating a fresh carb.
That said, bolt it on, start it up, check for leaks, and tune it.
Followed of course by gratuitous burnouts........:burnout:
That said, bolt it on, start it up, check for leaks, and tune it.
Followed of course by gratuitous burnouts........:burnout:
jbc426
Well-Known Member
I like to have a big towel, plenty of rags and a fire extinguisher handy. Verify full throttle at the pedal, make sure your linkage moves freely and doesn't stick or hang up. Use two return springs, one above the throttle shaft & one below it to minimize throttle shaft wear and enhance safety.
Take this time to add an insulating spacer between the carb and manifold if you have clearance. Fresh fuel filters and upgrade to fuel injection rated fuel lines and clamps. Route fuel lines away from heat sources or insulate them.
Check for leaks and adjust float levels once running. Verify your timing is set-up optimally and adjust A/F screws. Throw on a fresh air filter or clean your reusable one. Recheck everything for leaks a few times shortly after install.
Throw a wideband on it and dial it in. Add the reusable bowl gaskets if you need to reject.
Take this time to add an insulating spacer between the carb and manifold if you have clearance. Fresh fuel filters and upgrade to fuel injection rated fuel lines and clamps. Route fuel lines away from heat sources or insulate them.
Check for leaks and adjust float levels once running. Verify your timing is set-up optimally and adjust A/F screws. Throw on a fresh air filter or clean your reusable one. Recheck everything for leaks a few times shortly after install.
Throw a wideband on it and dial it in. Add the reusable bowl gaskets if you need to reject.
TrailBeast
AKA Mopars4us on Youtube
This was the question.
furyus2
Well-Known Member
Make sure you have a barrel intake (obvious).clean gasket surfaces, and verify that the throttle opens freely when bolted in place. I heard that the stock 4 barrel intakes had smaller bores. Haven't verified this. You will need a Mopar lever adapter for the throttle cable. And do everything jbc 426 said.
g413
Well-Known Member
Someone has said you may need some kind of adapter to connect to the linkage. This is very possible and you will soon find out. I would take lots of before pictures from all sides just so you know how things (hoses, linkages, springs, etc.) are connected now.
Mattax
Just the facts, ma'am
New or used?
A new Holley will come with instructions.
Checking dry float level is usually recommended, even new.
Get a copy of Ulrich and Fisher's Holley Carburetor book. Read that to understand how it works. A used copy is a fine.
A new Holley will come with instructions.
Checking dry float level is usually recommended, even new.
Get a copy of Ulrich and Fisher's Holley Carburetor book. Read that to understand how it works. A used copy is a fine.
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