Holley choke set screw
 

I have one of the externally referenced electric chokes. There is a small set screw at the front of the choke assembly that goes into the vacuum pull off chamber where the piston is. The set screw looks just like one of the ones for the idle mixture adjustment on the metering blocks, only it sits flush into the choke. It comes to a point and looks like it possibly controls the amount of vacuum pull off.

This set screw is interfering with the choke pull off at warm up. It won't allow my choke plate to open smoothly. Does anyone know exactly what the set screw is for, or what the correct baseline adjustment is?

What's the list number? I can look it up for ya.

Here is a link that shows the choke.
http://www.holley.com/HiOctn/ProdLin...CA/45-224.html

You can't see the set screw in the picture. Looking at the choke, the screw is located at the bottom left side of it.

Took a blurry pic of my choke assembly it's an internally referenced buy I think I have the screw your talking about. First pic in my gallery. I looked at it and it does seem to be a vacuum adjustment of some sort. It is set one full turn in from the head being flush with the housing. My choke works good so I hope this will help you..:thumbup:

Yes. That is the one. It is just to the left of the carb stud for anyone else that takes a look.

Thank you Pony. I will try the 1 turn out setting.

Does anyone else know what the screw is for?

only wussys run chokes......:D

Wussies, and people that drive their hot rods to work everyday at 6:00 AM.

WICKEDBLAB! What up fool? What are you doing trolling around here again?


See what happens when you tell one of your local hood rats about this site. They come on talk trash, and then split before you get a chance to tell them what time is it.

"They come on talk trash, and then split before you get a chance to tell them what time is it."

the time is to stop messing around and build a fast car......

i just picked up a 69 maro today.....give it a month or so itl be slammed,caged and fast :)

ill let ya know when im ready to race...lol

got any intakes around...performer rpm or victor jr... ???

I had an Edelbrock Scorpion intake a few months ago. It was the predecessor to the Torker. I sold it on Ebay for $50.


Here is a Victor Jr.
http://cgi.ebay.com/ebaymotors/ws/eB...category=42604

Check this out. Here is Edelbrock's worst manifold ever made. It made less power than a stock intake.
http://cgi.ebay.com/ebaymotors/ws/eB...category=33613

Why don't you build a big block this time?

Did you get a chance to mess with th choke yet?

bb are too heavy and too$$$$

i can build a killer smallblock for cheap compared to a bb.....

would be sweet tho hmmmmmmmmmmmmm...........

A little. I have been pretty busy this week so I have only been able to make small adjustments. I went with one turn out on the screw and my at least now the choke isn't binding up. The choke is opening up way too fast. It will fast idle for about a second and then returns to idle. I think the choke plate is opening up, but I haven't watched it yet. I am just guessing from what it sounds like in the driver's seat.

I am going to look at the thermostat's bimetal coil and see if there are any issues.

Does anyone know if you can adjust the amount of choke pull off from the set screw that I originally started this post about?

Quit screwing around. Loosen up the sphincter, (don't be such a tight ***). You have done everything there is to do with a normally aspirated small block. Why don't you build something like this?

http://cgi.ebay.com/ebaymotors/ws/eB...tem=2469444642

Just get some aluminum heads and a nice block. New front springs shouldn't be too much for the '69.