Single Carb Conversion 2 Barrel Progressive Holley,Weber 740 carb

[Jungo]

westgl » Mon Sep 16, 2013 8:21 am[/url]":15qe2nbj]
That carb. is as sweet as BBQ Pork Meat, at least that is what kermit said about Miss Piggy, I dont know what part of her he was talking about

:smilie_happy: :hihihi: :smilie_happy: :hihihi:

 

[westgl]

Hi Dave,

I think that the 22/22 venturi choke size is fixed on these carb.'s, if they could be swapped, I am not sure parts are available.

That is a Minor draw back, as this is a carb from 1983', Tom still has Brand New carbs.

But! the 32DFT works so well, that you could just ride your bike the way the carb is setup right out of the box as it runs perfect for me.

I should just leave it alone and not mess with the jets, it runs that good

Dave_J » Sun Sep 15, 2013 8:41 pm[/url]":12j8d3hm]
The only rating that should be observed is the venturi size, 22/24 mm or 32/36 mm. Throttle blade or the top opening do not control the flow. Inside the throttle bore above the venturi are booster venturi and these can sometimes be swapped to adjust flow.

 

[dan filipi]

westgl » Mon Sep 16, 2013 5:11 am[/url]":2st2tt5a]
Dan,

Where did you get the Number 22/22 from?

How do you know it is a 22/22?

Is the number 22/22 stamped on the carb.body ?

dan filipi » Sun Sep 15, 2013 7:12 pm[/url]":2st2tt5a]
This all sounds very promising West.

I've gotten confused with all the numbers being called out in this thread.
The carb I have is a 22 22. What do we know about it?
Is this a good choice?

Yes it's stamped on the side behind the electric choke.

 

[westgl]

You have 22/22 mm Venturi chokes

That is Good, that is what you want.

OK measure the Throttle Butterfly size

They should both be 32mm, or very close, between 31 to 33mm size

If this is true.

Then you have a Great carb for our GL 4cyl engines

To check the Jet sizes.

Look at the top of the carb. there is a gold anodized/ plated, Carb. air filter mount between the throttle bores.

There is a pin holding that Air Filter bracket to the carb. with needle nose pliers, pull that pin out.
the bracket can now be removed.

There are all your Jets, very easy to access, without having to open the carb. this carb is so easy to work on and tune.

Looking at the carb in your lap, Looking at the carb facing you position to the side that has the brass tube vacuum ports on it, there should be at least two of them.

The One on the right would be for distributor advance/retard, that goes to the back of the engine

Under that is a screw, it is for Idle Mixture adjustment, (I have Not adjusted Mine yet) this should be adjusted in till rpm starts to falloff then back out to achieve the highest rpm, if you go past highest rpm then start over

 

[dan filipi]

westgl » Mon Sep 16, 2013 7:33 am[/url]":2zepqnis]
You have 22/22 mm Venturi chokes

That is Good, that is what you want.

OK measure the Throttle Butterfly size

They should both be 32mm, or very close, between 31 to 33mm size

Yes, both are 32 mm.

Looks like all I need on this carb to run is fuel to the hose barb and cap everything else.

Joe say the power valve needs to be removed.
Which is that?

 

[westgl]

Please refresh page and Re-read my last/previous post.

I always add more to a post after I have posted, so you may only see rev.#1 of that post that i may have changed several times and am up to rev.#9 of that post, adding much more detail and info.

if you dont refresh and re-read you may have missed something

I am not a writer, and have to piece meal my thoughts together

dan filipi » Mon Sep 16, 2013 6:39 am[/url]":az1w7szg]

westgl » Mon Sep 16, 2013 7:33 am[/url]":az1w7szg]
You have 22/22 mm Venturi chokes

That is Good, that is what you want.

OK measure the Throttle Butterfly size

They should both be 32mm, or very close, between 31 to 33mm size

Yes, both are 32 mm.

Looks like all I need on this carb to run is fuel to the hose barb and cap everything else.

Joe say the power valve needs to be removed.
Which is that?

 

[westgl]

When you buy a Brand New carb. from Tom at Langdons Stovebolt.

He removes the Solenoid, between the two Vacuum ports that have the brass tubes, two ways you can do this, if you bought a carb somewhere else

1. Remove solenoid, install a plug, with a thread sealant Blue loctite OR
2. Remove Solenoid, remove/ cutoff plunger, add blue Loctite re-install to seal

If you buy Toms carb there is a Plug already installed

The is also a Vacuum port on the left side that has been removed as it is not needed for us, a plug is installed there to when you buy TOMs carb.

Then just remove one screw and two alum. pop rivets, I used a hack saw to cut through the two pop rivets, that holds the Elec choke and plug the vacuum port under the elec choke, it has a o-ring in the hole.

The one screw you removed from the elec. choke can then be inserted back into that vacuum port with the O-ring, with blue loctite, to seal seal it.

 

[westgl]

Dan/Joe

I am not sure of which Power valve Joe is referring to?

Is there any more info on the power valve?

A picture of it maybe?

Or a picture of carb. and location where it mounts on the carb.

 

[westgl]

If you Dont have a fuel inlet yet that is a 1/8" pipe thread.

Also if your carb has that Metal can Fuel Filter threaded on the carbs. fuel Inlet, get rid of it.

You will not be able to mount in between the frame rails with that metal Can fuel filter mounted to the carb. besides you already have a fuel filter on the bike, or should have.

Then install the 1/8", 90 degree brass pipe thread nipple for 1/4" fuel line.

 

[dan filipi]

Great info west!

 

[westgl]

Just remember,

To Re-Fresh all of my posts and re-read them, until I cant change them any more.

as I keep updating them till I can no longer change them.

I am Not a writer and my thoughts come through in spurts.

I always miss some details and add them later, or a better description can be said to get my point across.

 

[westgl]

Dan

You have the Great carb.

Was it used?

If so, jets may have been changed, by a previous owner and condition of carb. is?

New Crappy Gas, may have set in float bowl for a long time? Fuel residual could be inside carb float bowl, and/or jets clogging them, maybe passages up?

Just a thought.

 

[Jungo]

Hey West, do I need to remove the cutoff solenoid and install a plug on my 34 PICT 3 carb?

4899234

• Jungo
• Sep 16, 2013

 

[dan filipi]

westgl » Mon Sep 16, 2013 8:35 am[/url]":s98zikav]
Dan

You have the Great carb.

Was it used?

If so, jets may have been changed, by a previous owner and condition of carb. is?

New Crappy Gas, may have set in float bowl for a long time? Fuel residual could be inside carb float bowl, and/or jets clogging them, maybe passages up?
st a thought.

Its rebuilt. I'll post the jet numbers.

 

[joedrum]

the power valve is on the motorcraft holley model ... it seems later version this was droped ...it was suppose to add more fuel to primary when under load ...its seems on oldwimgs its over reactive and causes idle to go up and down this needs to disarmed ....I gets it vacme from base of carb so there no cloice but disarm it .... I think toms webers he selling don't even have this if so in casting it is blok off in plugs added to it ....

 

[dan filipi]

Jets, left to right: (e choke is on the left)

1) 60 on tip

2) Says 210 on top, 095 on tip

3) Says 175 on top, 107 on tip

4) 50 on tip

 

[dan filipi]

joedrum » Mon Sep 16, 2013 9:15 am[/url]":16da6kr6]
the power valve is on the motorcraft holley model ... it seems later version this was droped ...it was suppose to add more fuel to primary when under load ...its seems on oldwimgs its over reactive and causes idle to go up and down this needs to disarmed ....I gets it vacme from base of carb so there no cloice but disarm it .... I think toms webers he selling don't even have this if so in casting it is blok off in plugs added to it ....

Is that the electric valve with a wire and plug end?

 

[joedrum]

no it is right side e choke and down close to bae and has three screws holding it ..looks some what like cutoff valve on stock carbs

 

[dan filipi]

joedrum » Mon Sep 16, 2013 9:22 am[/url]":1ti9z20r]
no it is right side e choke and down close to bae and has three screws holding it ..looks some what like cutoff valve on stock carbs

This part?

 

[joedrum]

yes