Vacuum Advance Port
#1510197
09/30/13 08:34 PM
09/30/13 08:34 PM
|
Joined: Aug 2008
Posts: 941
Texas, USA
ChrgrCuda
OP
super stock
|
OP
super stock
Joined: Aug 2008
Posts: 941
Texas, USA
|
Hey Guys
I just got my ThermoQuad back from Scott Smith at Harms Auto and I'm very pleased. However I'm trying to figure out the correct port to plug in to the carb from the vacuum advance. I've played around with mixed results, just thought I'd ask the experts around here for some advice.
Thanks,
Darren
68 Cuda Notchback [Email]10.86@120[/Email]
69 Charger R/T 440/505
2009 Challenger SRT8
|
|
|
Re: Vacuum Advance Port
[Re: ChrgrCuda]
#1510198
09/30/13 09:06 PM
09/30/13 09:06 PM
|
Joined: Aug 2003
Posts: 12,291
Kent, Wa
340SHORTY
Truck Nut
|
Truck Nut
Joined: Aug 2003
Posts: 12,291
Kent, Wa
|
The port that doesnt have vac at idle...
I am truckless..
|
|
|
Re: Vacuum Advance Port
[Re: 340SHORTY]
#1510199
09/30/13 09:17 PM
09/30/13 09:17 PM
|
Joined: Aug 2008
Posts: 941
Texas, USA
ChrgrCuda
OP
super stock
|
OP
super stock
Joined: Aug 2008
Posts: 941
Texas, USA
|
That's what I have it hooked to. Looks like I'm in the right direction. Thanks!
68 Cuda Notchback [Email]10.86@120[/Email]
69 Charger R/T 440/505
2009 Challenger SRT8
|
|
|
Re: Vacuum Advance Port
[Re: ChrgrCuda]
#1510202
09/30/13 10:20 PM
09/30/13 10:20 PM
|
Joined: Jan 2003
Posts: 12,043
State of Confusion
hp383
Just a normal tag again
|
Just a normal tag again
Joined: Jan 2003
Posts: 12,043
State of Confusion
|
Some of them are. I think it requires a special tool? I personally have never messed with one.
Join the Penguin Liberation Front!!
Stop the Hippo Occupation!
|
|
|
Re: Vacuum Advance Port
[Re: hp383]
#1510203
09/30/13 11:30 PM
09/30/13 11:30 PM
|
Joined: Aug 2003
Posts: 12,291
Kent, Wa
340SHORTY
Truck Nut
|
Truck Nut
Joined: Aug 2003
Posts: 12,291
Kent, Wa
|
The little screw in the vac pot adjusts WHEN the advance comes in,,, not the amount of advance. The advance is controled by the weights and the little springs...
I am truckless..
|
|
|
Re: Vacuum Advance Port
[Re: 340SHORTY]
#1510204
10/01/13 12:08 AM
10/01/13 12:08 AM
|
Joined: Aug 2008
Posts: 941
Texas, USA
ChrgrCuda
OP
super stock
|
OP
super stock
Joined: Aug 2008
Posts: 941
Texas, USA
|
Got it, thanks Shorty. Which way controls how fat it comes in, clockwise or counter?
68 Cuda Notchback [Email]10.86@120[/Email]
69 Charger R/T 440/505
2009 Challenger SRT8
|
|
|
Re: Vacuum Advance Port
[Re: ChrgrCuda]
#1510205
10/01/13 11:48 AM
10/01/13 11:48 AM
|
Joined: Jan 2003
Posts: 5,791
Hamilton, Ontario Canada
Magnum
master
|
master
Joined: Jan 2003
Posts: 5,791
Hamilton, Ontario Canada
|
Manifold vacuum is only out voted here on Moparts. It is not the incorrect port.
It has some advantages, just like ported.
This is one method to have big numbers at idle AND light throttle cruise, which equals better mileage. That's how many computerized cars run.
69 Super Bee, 93 Mustang LX, 04 Allure Super
|
|
|
Re: Vacuum Advance Port
[Re: hp383]
#1510209
10/02/13 01:04 AM
10/02/13 01:04 AM
|
Joined: Jan 2003
Posts: 5,791
Hamilton, Ontario Canada
Magnum
master
|
master
Joined: Jan 2003
Posts: 5,791
Hamilton, Ontario Canada
|
Quote:
Quote:
um, what? 
Whew... I thought maybe I was the only one lost on that. 
A mild engine like to idle at more than 10 deg. 10 is the number most of us are stuck with due to starter kick back. Manifold vacuum advance is one way to achieve higher advance numbers during idle.
I hate to mention it here on "the old car forums" but idling at 10 degrees is not seen on fuel injected cars. Switching from ported to manifold vacuum advance is another way to achieve timing maps similar to todays cars.
Timing while cranking will be the same, total will be the same, partial throttle will be the same, just more timing during idle.
69 Super Bee, 93 Mustang LX, 04 Allure Super
|
|
|
|
|
