fun with holleys!!

Reply Subscribe

Thread Tools

Search this Thread

Oct 22, 2008 | 10:51 AM

#11

kalli

6th Gear Member

Joined: Oct 2006

Posts: 6,417

From: Cork, Ireland

i couldn't do it here either. i would be some nice performance option, but I do rely on the choke in the cold weather here.
A single pedal push has to be done anyway for heatriser and electric carbs to close the throttle plate. But when the engine is cold it needs less air and more fuel as the fuel condenses on the cold parts.
I couldn't drive without choke in cold weather. i woul;d have to run the car for 5 minutes at 2000rpm (which would be very lean) before I could drive to work in the morning ...
But if you are in hot climate and don't need a choke ... at least it's a great modification if your engine is spending a lot of the time on the track I guess

Oct 22, 2008 | 11:19 AM

#12

my77stang

Thread Starter

6th Gear Member

Joined: Dec 2006

Posts: 8,007

From: Citrus County, FL

im in FL, so even on a cooler day its not a big deal for me to give a squirt to start it and use my foot to keep it @ 1500 or so for a minute or two.

Oct 22, 2008 | 03:05 PM

#13

jlg2002

4th Gear Member

Joined: Jun 2006

Posts: 1,483

From: Fontana, California

Quote:

Originally Posted by MBDiagMan

On a race car, removing the air horn allows air to more easily flow into the top of the carburetor. It will also do the same thing on a steet car, but.......

.......on a street car from which long engine life is desired, removing the choke is very unhealthy for the engine. Without a choke, you have to pump the accelerator on cold starts to squirt some raw fuel in for startup. This raw fuel dillutes the oil on the cylinder walls RAPIDLY wearing the cylinder walls, pistons and rings.

Several years ago I bought a phenolic gadget that slipped over the top of the carburetor to funnel in air. It works REALLY well and allows you to keep the choke. I don't know if they are still available and I don't remember what they are called, but it would be a GREAT compromise for a street car.

Doc,
I agree with the oil wash comment, although I'm not sure you've totally made your point here. Setting the choke also takes at least 1 or more squirts of fuel out of the accel pump (depending on the person doing the starting). I think you meant to say "repeatedly pumping the throttle to keep it running", yeah?
JLG

Oct 23, 2008 | 03:02 AM

#14

kalli

6th Gear Member

Joined: Oct 2006

Posts: 6,417

From: Cork, Ireland

must have :-]

anyways. Seems like my77stang had a lot of fun with his carb though :-)

Kalli

Oct 23, 2008 | 05:06 AM

#15

bwkelley76

3rd Gear Member

Joined: Sep 2008

Posts: 715

From: CA

Quote:

Originally Posted by jlg2002

not to beat a dead horse. I agree although I do see the point. I'd be more worried about the lean running at warmup, improper enrichment, etc. and how it may effect long-term engine life. Sounds like he's in Florida where the air is so dense it may not matter...LOL. As long as it works for him and he's having fun with it.

Nice work.

As far as the double-pumper versus the vacuum secondaries, it's all about the proper adjustment of said secondaries whether it's manual or vacuum. I've seen guys over-carb with too light of a spring in the vacuum pod also. My personal preference is definitely a DP but to each their own, and each setup is different. If it works for ya then sweet. Vacuum secondaries require too much patience for my disposition. LOL

Oct 23, 2008 | 08:28 AM

#16

urban_cowboy

5th Gear Member

Joined: Apr 2007

Posts: 2,100

From: Texas Hill Country

A more popular option these days is a K&N XStream air cleaner lid. That way the carb can pull air from the top side thus not air flow restriction with the choke tower. You get better air flow and still have use of a choke.