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| | | | Joined: Feb 2014 Posts: 48 Wrench Fetcher | | Wrench Fetcher Joined: Feb 2014 Posts: 48 | Hello all. I was wondering, I am finishing up the install of my carter weber dual carb set-up on my 54 235 and wasn't sure where to hook up the chokes. I was just going to splice the 2 together but wasn't sure if there was a location under the hood that they could be connected to, or should I run them to one of the terminals on my ignition switch?
Matt
Blacktop Cannibals Car Club
1954 Chevy mild custom car
1955 Chevy second series 3200
| | | | | Joined: Feb 2004 Posts: 29,755 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,755 | It's best to power electric choke(s) from an oil pressure switch. Simply connecting to a switched voltage source is OK as long as the engine doesn't stall during warmup. If that happens, the choke heaters continue to operate and the choke releases, making the engine hard to restart. A combination idiot light/fuel pump switch for a Chevy Vega, or any other GM product with an electric fuel pump makes a good addition to the circuit. Any 12V source can be used to supply power to the pressure switch.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: May 2005 Posts: 8,983 Sir Searchalot | | Sir Searchalot Joined: May 2005 Posts: 8,983 | Jerry, can you explain where to hook up this switch and how it cuts power to choke when motor stalls? Sounds like a good idea. thanks
Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn
| | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | https://www.stovebolt.com/ubbthreads/ubbthreads.php?ubb=showflat&Number=754493#Post754493Run a hot lead into the switch (from hot lead/post on ignition, or voltage regulator, alternator). Run lead from switch to rear choke. Run lead from rear choke/carb to front choke/carb. If the engine is off (or stalls with the ignition on) no power/heat goes to the carb. The choke will then close as it cools off. This set-up works with those carbs on 6v and 12v systems. | | | | | Joined: May 2005 Posts: 8,983 Sir Searchalot | | Sir Searchalot Joined: May 2005 Posts: 8,983 | If ignition is on, which it would be at stall, then there would be power to choke? Now that I think about it, I guess it's not a big deal. If it stalls, you try and start again or shut it off anyway.
Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn
| | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | If ignition is on, which it would be at stall, then there would be power to choke? Now that I think about it, I guess it's not a big deal. If it stalls, you try and start again or shut it off anyway. In my set-up with the oil-pressure switch, suggested by Jerry, if my truck stalls, there is no power to the chokes. | | | | | Joined: Feb 2004 Posts: 29,755 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,755 | Some of us live where the local thugs don't try to steal every running vehicle that doesn't have anybody sitting in the driver's seat, so we crank up the engine on a cold morning and have another cup of coffee while it's warming up. A stall would not be noticed until the choke(s) heated up and released fully without the pressure sensing switch.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: May 2005 Posts: 8,983 Sir Searchalot | | Sir Searchalot Joined: May 2005 Posts: 8,983 | I get it now, I missed that it's actuated by oil pressure. Sorry.
thanks Jerry and Tim. I learned a cool idea.
Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn
| | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | Here is the pressure switch plumbed into a full-flow oil-filter head on a 1960 261. That set-up used to be in my 6v 1954 Suburban. | | | | | Joined: May 2005 Posts: 8,983 Sir Searchalot | | Sir Searchalot Joined: May 2005 Posts: 8,983 |
Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn
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