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What's the name/purpous of this valve? #1193018 03/07/12 08:32 PM 03/07/12 08:32 PM
Joined: Aug 2004 Posts: 8,087 Elk Grove, Calif. B bigblock340power OP master
bigblock340power OP master B Joined: Aug 2004 Posts: 8,087 Elk Grove, Calif.	I just got done rebuilding the 2 bbl carb on my truck. This valve is not holding vacuum. But I don't know where to get another one, or even what it does or what it's called. It's the one on the far left with the hose still on it, and linked to the choke arm (oh, and these pics were taken before I rebuilt the carb). A little help here please.

Re: What's the name/purpous of this valve? [Re: bigblock340power] #1193019 03/07/12 08:40 PM 03/07/12 08:40 PM
Joined: Jan 2003 Posts: 1,251 Slidell, LA Ronnman pro stock
Ronnman pro stock Joined: Jan 2003 Posts: 1,251 Slidell, LA	It is the choke pull off pot/diaphragm. It's purpose is to slightly open the choke butterfly after the engine starts to help prevent an over rich condition. It might be available at some auto parts stores. Ron

Re: What's the name/purpous of this valve? [Re: bigblock340power] #1193020 03/07/12 08:40 PM 03/07/12 08:40 PM
Joined: Jan 2003 Posts: 25,747 Rio Linda, CA John_Kunkel Too Many Posts
John_Kunkel Too Many Posts Joined: Jan 2003 Posts: 25,747 Rio Linda, CA	It's called a choke pull-off. It pulls the choke butterfly open against the closing force of the choke thermostat. The INTERNET, the MISinformation superhighway

Re: What's the name/purpous of this valve? [Re: bigblock340power] #1193021 03/07/12 08:43 PM 03/07/12 08:43 PM
Joined: Jan 2003 Posts: 535 PA M maxwedge1 mopar
maxwedge1 mopar M Joined: Jan 2003 Posts: 535 PA	choke vacuum actuator

Re: What's the name/purpous of this valve? [Re: maxwedge1] #1193022 03/07/12 08:47 PM 03/07/12 08:47 PM
Joined: Jan 2003 Posts: 1,251 Slidell, LA Ronnman pro stock
Ronnman pro stock Joined: Jan 2003 Posts: 1,251 Slidell, LA	Available at Rockauto. STANDARD MOTOR PRODUCTS Part # CPA66 More Info {#2585416, 2808042, 2809369, 2809388, 2809389, 3419508, 3419511, 3549450, 3621272, 3683807, 3683874, 3685730, 3685731, 3685732, 3685733, 3685846, 3744549, 3744550, 3879116, 443807C2, 460750C1, 465112C1, 465113C1} Choke Pulloff 2 BBL

Re: What's the name/purpous of this valve? [Re: Ronnman] #1193023 03/07/12 08:51 PM 03/07/12 08:51 PM
Joined: Aug 2004 Posts: 8,087 Elk Grove, Calif. B bigblock340power OP master
bigblock340power OP master B Joined: Aug 2004 Posts: 8,087 Elk Grove, Calif.	Would this cause a vacuum leak, 'cause it won't hold vacuum? You people are the best. Thanks

Re: What's the name/purpous of this valve? [Re: bigblock340power] #1193024 03/07/12 08:53 PM 03/07/12 08:53 PM
Joined: Jan 2003 Posts: 1,251 Slidell, LA Ronnman pro stock
Ronnman pro stock Joined: Jan 2003 Posts: 1,251 Slidell, LA	Yes

Re: What's the name/purpous of this valve? [Re: Ronnman] #1193025 03/07/12 09:04 PM 03/07/12 09:04 PM
Joined: Aug 2004 Posts: 8,087 Elk Grove, Calif. B bigblock340power OP master
bigblock340power OP master B Joined: Aug 2004 Posts: 8,087 Elk Grove, Calif.	Quote: Yes Well I've got that port capped off with a rubber cap for now. Seems to run a bit better. I ordered a new one, will be in tomorrow a 1:00. Thanks again all.

Re: What's the name/purpous of this valve? [Re: bigblock340power] #1193026 03/08/12 08:33 AM 03/08/12 08:33 AM
Joined: Jan 2003 Posts: 21,065 Niles , Ohio T therocks oh wait.but hey.lets see.oh yeah.
therocks oh wait.but hey.lets see.oh yeah. T Joined: Jan 2003 Posts: 21,065 Niles , Ohio	New ones also need adjusted when installed.Those I believe you use a drill in between the choke and carb body and pull vacuum on the pull off.Then the arm gets bent.Sometimes you get lucy and its real close.Been years since I did them.Used to have angle gauges and different size bits to set them at work.Rocky Chrysler Firepower

Re: What's the name/purpous of this valve? [Re: bigblock340power] #1193027 03/08/12 10:03 AM 03/08/12 10:03 AM
Joined: Aug 2005 Posts: 11,543 chicagoland,usa B buildanother I Live Here
buildanother I Live Here B Joined: Aug 2005 Posts: 11,543 chicagoland,usa	Agreed with above, and you'd be sunk w/out that thing working in a cold climate.

Re: What's the name/purpous of this valve? [Re: buildanother] #1193028 03/08/12 10:55 AM 03/08/12 10:55 AM
Joined: Aug 2004 Posts: 8,087 Elk Grove, Calif. B bigblock340power OP master
bigblock340power OP master B Joined: Aug 2004 Posts: 8,087 Elk Grove, Calif.	Quote: Agreed with above, and you'd be sunk w/out that thing working in a cold climate. Yah, I get it. But Calif.?

Re: What's the name/purpous of this valve? [Re: bigblock340power] #1193029 03/08/12 11:00 AM 03/08/12 11:00 AM
Joined: Jan 2003 Posts: 74,974 U.S.S.A. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 74,974 U.S.S.A.	That valve also pulls open the choke plate under part throttle conditions till the choke thermo pulls it completely open once the engine is warmed up .

Re: What's the name/purpous of this valve? [Re: bigblock340power] #1193030 03/08/12 08:30 PM 03/08/12 08:30 PM
Joined: Jan 2003 Posts: 462 santa anna, Tx. C charles6970 mopar
charles6970 mopar C Joined: Jan 2003 Posts: 462 santa anna, Tx.	i see two vaccum valves, which one are you talking about??

Re: What's the name/purpous of this valve? [Re: charles6970] #1193031 03/08/12 08:59 PM 03/08/12 08:59 PM
Joined: Aug 2004 Posts: 8,087 Elk Grove, Calif. B bigblock340power OP master
bigblock340power OP master B Joined: Aug 2004 Posts: 8,087 Elk Grove, Calif.	Quote: i see two vaccum valves, which one are you talking about?? Thank you all for your help. I have replaced the choke pull off valve (see, I know what to call it now), and all is right with the world again. As far as "which one are am I talking about"? I think the part about " It's the one on the far left with the hose still on it" should have cleared it up nicely.

Re: What's the name/purpous of this valve? [Re: bigblock340power] #1193032 03/09/12 04:56 AM 03/09/12 04:56 AM
Joined: Sep 2003 Posts: 815 PNW D Danan super stock
Danan super stock D Joined: Sep 2003 Posts: 815 PNW	Hey Mike, If you move to WA I'll give you an Edelbrock RPM and a holley 4bbl all ready to go! Oh, and a completely rebuilt 9 1/4" rear with aftermarket shafts, new gears/bearings. But you have to MOVE, not visit. Heck; I'll give you the entire 360 engine, recently rebuilt and complete. Did I forget to mention that we have no smog laws and that because WA is in the United States of America, the 2nd Amendment pertains so you can actually own firearms??

Re: What's the name/purpous of this valve? [Re: charles6970] #1193033 03/09/12 05:17 AM 03/09/12 05:17 AM
Joined: Jan 2003 Posts: 27,421 Balt. Md 3 383man Too Many Posts
383man Too Many Posts 3 Joined: Jan 2003 Posts: 27,421 Balt. Md	Quote: i see two vaccum valves, which one are you talking about?? Yes I see 2 vacum valves also. The one at the back of the carb is the choke pull-off and the one close to the front looks like an AC idle up valve. Ron Last edited by 383man; 03/09/12 05:17 AM.

Re: What's the name/purpous of this valve? [Re: 383man] #1193034 03/09/12 07:30 AM 03/09/12 07:30 AM
Joined: Mar 2010 Posts: 1,880 Out in Left Field, NY B bobs66440 top fuel
bobs66440 top fuel B Joined: Mar 2010 Posts: 1,880 Out in Left Field, NY	Quote: Quote: i see two vaccum valves, which one are you talking about?? Yes I see 2 vacum valves also. The one at the back of the carb is the choke pull-off and the one close to the front looks like an AC idle up valve. Ron Man! What a contraption Can you imagine engineering that from scratch?

Re: What's the name/purpous of this valve? [Re: Danan] #1193035 03/09/12 10:45 AM 03/09/12 10:45 AM
Joined: Aug 2004 Posts: 8,087 Elk Grove, Calif. B bigblock340power OP master
bigblock340power OP master B Joined: Aug 2004 Posts: 8,087 Elk Grove, Calif.	Quote: Hey Mike, If you move to WA I'll give you an Edelbrock RPM and a holley 4bbl all ready to go! Oh, and a completely rebuilt 9 1/4" rear with aftermarket shafts, new gears/bearings. But you have to MOVE, not visit. Heck; I'll give you the entire 360 engine, recently rebuilt and complete. Did I forget to mention that we have no smog laws and that because WA is in the United States of America, the 2nd Amendment pertains so you can actually own firearms?? Damn Danan, you make it tempting. All I'd have to do is retire early (live on a diminished income), sell everything at a loss ('cause the economy sucks right now), move away from every bit of family we have, and move everything 12 hours 41 mins/750.2 mi to the north. I think I'll wait it out. By the way, how you doing? No hear from for quite a while (WTF). Everyones been asking (I have nothing to give them)!

Re: What's the name/purpous of this valve? [Re: bigblock340power] #1193036 03/10/12 03:55 AM 03/10/12 03:55 AM
Joined: Sep 2003 Posts: 815 PNW D Danan super stock
Danan super stock D Joined: Sep 2003 Posts: 815 PNW	Mike, EVERYONE lives on a diminished income in WA; you'll fit right in. Did I forget to mention that the 360 has an actual 9:1 compression ratio so it'll actually get out of it's own way? Things are going well overall. Good days and bad days, as you would expect. Doing a lot of good things and there isn't another place I'd rather be right now. I'm happier doing what I do over here than anything I could do back in the States; especially during an election year. Send my best to the family and all our buds. Also, I'll be seeing you guys in the not-so-distant future. By the way, how many guys show up to coffee these days??

Re: What's the name/purpous of this valve? [Re: Danan] #1193037 03/10/12 11:25 AM 03/10/12 11:25 AM
Joined: Aug 2004 Posts: 8,087 Elk Grove, Calif. B bigblock340power OP master
bigblock340power OP master B Joined: Aug 2004 Posts: 8,087 Elk Grove, Calif.	By the way, how many guys show up to coffee these days?? Well, I guess since this is our only venue for talking now a days. I'd say about six or so off and on. All are doing fine. I haven't heard a word fron your Mrs. in quite a while. All OK?

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