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03-03-2011, 10:29 PM
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Grease Monkey
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Join Date: Mar 03, 2011
Location: Newport Beach
Posts: 300
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What is this?
This has been sitting there, unplugged, infront of the carb, ever since I've had this jeep, and it has always passed the visual inspestion.
What is this?!?!
http://www.flickr.com/photos/60210579@N04/5495766671/
Last edited by Beach_Dude : 03-03-2011 at 10:31 PM.
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03-03-2011, 10:31 PM
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Join Date: Nov 22, 2000
Location: Richfield MN
Posts: 6,665
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 Is a little red X.
__________________
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Home of ADHD project list
1977 J-10 Honcho 360-T15-D20
1977 Cherokee WT 360-Th400-NP241 true-trac(s)
1979 Cherokee 4 Door 258-T-18-D20
1981 Cherokee Chief WT 360-727-NP208
1972 K20 Suburban 350 SM465 205
And the other stuff that gets driven
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03-03-2011, 10:32 PM
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Grease Monkey
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Join Date: Mar 03, 2011
Location: Newport Beach
Posts: 300
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I know, sorry. I was having a hard time putting the link in.
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03-03-2011, 10:37 PM
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FSJ Maniac
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Join Date: Jun 05, 2001
Location: Colorado, USA
Posts: 3,504
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Which engine is the pic from?
Best guess - anti-backfire valve not hooked up part of emissions nice green
Flux capacitor
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1981 Jeep J10 Laredo, 401-V8, 625 Carter Comp Series, Lunati Cam 262/268, Edelbrock Performer, MSD Ignition, Flow Cooler, Be Cool Aluminum Radiator, Doug Thorley, NV4500 5-Spd, NP-231D, 3.73 F/R Trac-Locs, Rustys 4" Lift, Vintage Red Metallic, Black Interior and 33X10.50X15 BFG, EXTREME MAKEOVER - IN PROCESS  Bling Bling Cha-Ching
Last edited by badaboom : 03-03-2011 at 10:41 PM.
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03-03-2011, 10:39 PM
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Grease Monkey
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Join Date: Mar 03, 2011
Location: Newport Beach
Posts: 300
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So, from EGR to this antibackfire, to EGR CTO, to EGR port on carb? Why are there three ports? the port in the front is just a pin hole, but air still comes through when blown.
77' 360 jeep cherokee
The green part comes off, then you can see that it looks like a thermostat/diaphram with a spring. The green part pulls right off.
Last edited by Beach_Dude : 03-03-2011 at 11:02 PM.
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03-04-2011, 05:13 AM
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Master Mechanic
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Join Date: Apr 24, 2010
Location: North Cincinnati
Posts: 1,001
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we call that an extra part around here.
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03-04-2011, 05:44 AM
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Roadside Mechanic
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Join Date: Dec 29, 2003
Location: Western MA
Posts: 9,726
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Some early models had a thermally-controlled vacuum valve that controlled how vacuum advance to the distributor is handled based on engine temp. If the bozos at inspection aren't worried about it and your ride is running in satisfactory fashion then you can place this unit on your desk next to the broken piston holding all your pens and letter openers.
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03-04-2011, 06:48 AM
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Join Date: Jul 30, 2003
Location: Normal, Oklahoma
Posts: 8,682
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I dunno. Mr. Locke is referring to the non-lnr valve. I have not seen on that looked like that.
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Mark B. Jones
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Originally Posted by GrandWag&Prix
Actually, now that I think about it, that could be either awesome or really terrible.
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'76 401 Wagoneer
'79 Chief "Junaluska"
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03-04-2011, 07:06 AM
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Gear Head
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Join Date: Jun 25, 2009
Location: Durham, CT
Posts: 518
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Looks kinda like a Sol Vac... but a little different... I agree with Mars
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1997 Jeep TJ AMC 150 2.5L, AX-5, NV-231 Status: ALIVE
1983 Jeep J-10 AMC 258 4.2L, Holley 2bbl, HEI, T-177, NP-208, 4" Rusty's Spring Lift, CherryBomb haha Status: ALIVE
1976 Jeep J-10 AMC 360 5.9L, TH400, Quadra-Trac Status: SOLD! to The Dude
Durham, CT
Quote:
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Originally Posted by Julep4000
Kudos, sir... I didn't plan on coffee coming out of my nose today.
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03-04-2011, 07:37 AM
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Grease Monkey
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Join Date: Jul 19, 2010
Location: Apple Valley Ca.
Posts: 457
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It's the thingy
That part looks like the valve that controlls the throttle opener, a diaphragm mounted in front of the throttle linkage. This was common on chevrolet engines in the early to mid 80s. It allows the throttle to close slowly at that last bit before idle. Mostly used on manual trans trucks.
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'63 wagoneer '87 360 running gear exept T case (207), warn hubs, 3.56 diffs and EFI My own creation, mostly ford CFI Temporary Holley 350 cfm 2 barrel and delco window dist.
'67 Scout 152cid w/EFI and turbo also My own a little help from Chrysler.I am a fabricator, I make stuff up!
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03-04-2011, 08:00 AM
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Member
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Join Date: Mar 15, 2009
Location: hesperia ca.
Posts: 71
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might want to get that hooked up, around newport, a backfire will start a beach riot. (aka 4th of july)
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1st year willys pre release model, 4bt cummins turbo diesel, sm465/203/205 o.r.d. gear doubler, 3 sticks, gear vendors o.d. d-60 rear powerlock, d-44 front powerlock, 2 tanks/39 galls, 20 mpg, ac, cruise, tilt, axle under sp/9" lift, 400k miles, restored in 1985, custom leer shell modified from 7' ranger, fold down bed, hickey sidewinder winch/12k
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03-04-2011, 08:28 AM
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Join Date: Jul 30, 2003
Location: Normal, Oklahoma
Posts: 8,682
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Quote:
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Originally Posted by smogdredd
That part looks like the valve that controlls the throttle opener, a diaphragm mounted in front of the throttle linkage. This was common on chevrolet engines in the early to mid 80s. It allows the throttle to close slowly at that last bit before idle. Mostly used on manual trans trucks.
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That part (throttle opener) would be called a dashpot. I don't know why. It is neither part of the dash or full of, um, leafy green stuff. I suppose it is pot shaped to some degree.
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Mark B. Jones
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Originally Posted by GrandWag&Prix
Actually, now that I think about it, that could be either awesome or really terrible.
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'76 401 Wagoneer
'79 Chief "Junaluska"
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03-04-2011, 09:16 AM
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Grease Monkey
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Join Date: Jul 23, 2010
Location: clinton NC
Posts: 312
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i think smog and burner have a handle on it
i've never seena dashpot that looked like that, and ive only sold 1 in my history of bein a counter man..i remember the one i sold cause i had to ask our resident genius( uncle buddy) wth a dashpot was because i couldn't find one...without lookin in a catalog he went and pulled one off the hygrade shelf...looked like it had been sittin there for years...best i remember of his explanation..its part of the carb system and are rarely used nowadays..i wanna say that they're the predecessor of the modern idle air control valve.
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Big Mike
 83 wag limited-360-  89 G.wag -360- "10-4 rubber duck"
"In GOD we trust..all others pay cash"
-mat. 21:42-
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03-04-2011, 10:14 AM
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Grease Monkey
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Join Date: Mar 03, 2011
Location: Newport Beach
Posts: 300
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It can't be affiliated with the throttle because the carb has an electrical solenoid.
Obviously I'm going to remove it. Also, I'm having a hell of a time with all the different vacuum diagrams that exist.
I can't find the TCS switch on my block or any additional wires leading to the tranny for the TCS vacuum. It's a 3spd auto tanny on a 360 block. Currently my vaccum for spark goes:
1) EGR
2) EGR CTO
3) EGR Carb Port (I think it's the EGR port)
Also, do both front vacuum ports on the MC 4350 have the same vacuum properties?
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03-04-2011, 11:31 AM
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Join Date: Jul 30, 2003
Location: Normal, Oklahoma
Posts: 8,682
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Looks like the answer to what is this thing is in your other thread on vacuum diagrams.
I don't know what a TCS is. The Turbo 400 has a vacuum modulator and the kickdown is controlled by an electric switch on the throttle, right above the pedal.
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Mark B. Jones
Quote:
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Originally Posted by GrandWag&Prix
Actually, now that I think about it, that could be either awesome or really terrible.
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'76 401 Wagoneer
'79 Chief "Junaluska"
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03-04-2011, 11:34 AM
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Grease Monkey
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Join Date: Jul 23, 2010
Location: clinton NC
Posts: 312
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Quote:
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Originally Posted by 710 Burner
Looks like the answer to what is this thing is in your other thread on vacuum diagrams.
I don't know what a TCS is. The Turbo 400 has a vacuum modulator and the kickdown is controlled by an electric switch on the throttle, right above the pedal.
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i was thinking the same thingafter lookin at the pic----decel valve...runs off manifold vacuum and connects with the throttle modulating diaphragm on the carb...
.tsm states this " during high speed deceleration, when the manifold vauum reaches approximately 21 to 22 inches, the deceleration valve triggers a vacuum signal to the throttle modulating diaphragm and causes the plunger to move out and open throttle slightly. the increased throttle opening allows more air to enter the combustion chambers and lean out the overrich mixture, therebyreducing the emission of hydrocarbons"
__________________
Big Mike
83 wag limited-360-
89 G.wag -360-
"10-4 rubber duck"
"In GOD we trust..all others pay cash"
-mat. 21:42-
Last edited by Michael_King024 : 03-04-2011 at 11:41 AM.
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03-05-2011, 09:10 AM
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Gear Head
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Join Date: Jan 19, 2011
Location: Winder, Georgia
Posts: 598
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It could be the "Turbo Incabulator". http://www.youtube.com/watch?v=rLDgQg6bq7o
Most likely not, but don't you feel better after watching that?
"Side fumbling" is never good.
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You can teach what you know but you can only reproduce what you are.
It makes sense if you don't think about it.
Brad B.
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03-05-2011, 10:19 PM
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Member
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Join Date: Oct 05, 2009
Location: Michigan
Posts: 158
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Quote:
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Originally Posted by Beach_Dude
.... Also, I'm having a hell of a time with all the different vacuum diagrams that exist.
I can't find the TCS switch on my block or any additional wires leading to the tranny for the TCS vacuum. It's a 3spd auto tanny on a 360 block. Currently my vaccum for spark goes:
1) EGR
2) EGR CTO
3) EGR Carb Port (I think it's the EGR port)
Also, do both front vacuum ports on the MC 4350 have the same vacuum properties?
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I just went through the same frustration with the vacuum diagrams. We have come to the conclusion that Jeep did a crappy job of documenting all the various configurations: I6, V8, Cali emissions, Fed emissions, etc..
I have a 78 with the MC4350 and I might be able to help. Not sure what you're asking about the front ports having the same vacuum properties, though. |
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