hand throttle vs cold start circuit, Anyone use the CSC on Webers? |
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hand throttle vs cold start circuit, Anyone use the CSC on Webers? |
bbrock |
Nov 13 2017, 03:50 PM
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#1
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914 Guru Group: Members Posts: 5,269 Joined: 17-February 17 From: Montana Member No.: 20,845 Region Association: Rocky Mountains |
My Webers have the cold start circuits installed. While I'm replacing the floor pan and have easy access to the tunnel, I am thinking about adding a couple tubes to run cables from a hand throttle lever to the carbs to operate the chokes. Wondering if anyone has done this and whether it would provide superior cold starting to the traditional hand throttle. I live in the frigid north where it can freeze any day of the year, so I want the best cold start operation I can get. Thoughts?
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bbrock |
Nov 16 2017, 01:12 PM
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#2
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914 Guru Group: Members Posts: 5,269 Joined: 17-February 17 From: Montana Member No.: 20,845 Region Association: Rocky Mountains |
This is all great feedback. Still would love to hear about starting a carbed engine at zero degrees F, but this has been great. I'm liking the idea of just waiting until the car is back together and testing the cold start circuit. I was thinking that the time to prep for cables to the carbs would be when I had the floor off and tunnel opened up. But in reality, it's just a couple holes with grommets that would be needed to pass the cables through the firewall.
As for forgetting to put the lever down after the engine warms, I wouldn't think it would be much different from a manual choke. It happens, but becomes obvious pretty quickly. In this case, I would assume the engine would idle fast due to the rich mixture. One other thing. In addition to starting ease, I've read elsewhere of some people warning about fuel washing the oil off the cylinders when you pump the accelerator just prior to starting. That might just be crazy "Internet lore" but wonder what you think. It is true that the cold start circuit would be spraying atomized mix into the intake and only when there is vacuum to pull it in during a combustion cycle. |
brant |
Nov 17 2017, 03:20 PM
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#3
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914 Wizard Group: Members Posts: 11,739 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains |
my current motor is FI
but I daily drove a 2.0/4 for years back in the 80's it had 40mm IDF carbs and was living in boulder Colorado at the time never failed to start I remember near Christmas in about 1990, it was 17 below F started up a little cold until it idled for a few minutes just pump the acc pedal a few times and then turn the key KISS... its plenty easy to start without more complications. brant This is all great feedback. Still would love to hear about starting a carbed engine at zero degrees F, but this has been great. I'm liking the idea of just waiting until the car is back together and testing the cold start circuit. I was thinking that the time to prep for cables to the carbs would be when I had the floor off and tunnel opened up. But in reality, it's just a couple holes with grommets that would be needed to pass the cables through the firewall. As for forgetting to put the lever down after the engine warms, I wouldn't think it would be much different from a manual choke. It happens, but becomes obvious pretty quickly. In this case, I would assume the engine would idle fast due to the rich mixture. One other thing. In addition to starting ease, I've read elsewhere of some people warning about fuel washing the oil off the cylinders when you pump the accelerator just prior to starting. That might just be crazy "Internet lore" but wonder what you think. It is true that the cold start circuit would be spraying atomized mix into the intake and only when there is vacuum to pull it in during a combustion cycle. |
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