572 Vacum Pump - Moparts Forums

Register Log In Moparts Forums Unlawfl's Race & Engine Tech 572 Vacum Pump

Print Thread

Page 3 of 3

1

2

3

Re: 572 Vacum Pump [Re: Raffaplymouth60] #2630082 03/07/19 06:42 PM 03/07/19 06:42 PM
Joined: Mar 2014 Posts: 195 Italy R Raffaplymouth60 OP member
Raffaplymouth60 OP member R Joined: Mar 2014 Posts: 195 Italy	Guys ... anyone speak for the pulley drive diameter ??? too big ... too vacuum ?? 1970 Cuda 496 street driven 9.22@150 1971 Demon 572 7.82@176 1957 Desoto Adventurer Convertible 345 Hemi 1958 Plymouth Fury Christine 2008 Dodge Ram 1500 Hemi 1970 Dodge ChallengerRT 6pack 4 speed 1 of 135 1968 Dodge Charger RT 4 speed

Re: 572 Vacum Pump [Re: Raffaplymouth60] #2630101 03/07/19 07:31 PM 03/07/19 07:31 PM
Joined: Feb 2008 Posts: 452 Monrovia, So-Cal, USA racerhog mopar
racerhog mopar Joined: Feb 2008 Posts: 452 Monrovia, So-Cal, USA	My 2 Cents.... Dont spin the pump over 6000 RPM'S.. My 2 cents on the Vacuum 12-14" I prefer the 4 Vane Pump. But as long as the one you using will pull whatever vacuum setting you feel you need and it's working and your not having to rebuild the pump all the time. Run it... But like I said. Thats just my point of view. Last edited by racerhog; 03/07/19 07:36 PM. Bob(Cowboy)Hogan Monrovia So-Cal

Re: 572 Vacum Pump [Re: Raffaplymouth60] #2630341 03/08/19 12:19 PM 03/08/19 12:19 PM
Joined: Jan 2003 Posts: 19,363 Las Vegas Al_Alguire I Live Here
Al_Alguire I Live Here Joined: Jan 2003 Posts: 19,363 Las Vegas	Originally Posted by Raffaplymouth60 Guys ... anyone speak for the pulley drive diameter ??? too big ... too vacuum ?? 66% of engine speed seems to be a happy place for the typical Bracket guy. If you have a higher RPM deal, then 50% of engine speed. "I am not ashamed to confess I am ignorant of what I do not know." "It's never wrong to do the right thing"

Re: 572 Vacum Pump [Re: racerhog] #2630471 03/08/19 05:34 PM 03/08/19 05:34 PM
Joined: Mar 2014 Posts: 195 Italy R Raffaplymouth60 OP member
Raffaplymouth60 OP member R Joined: Mar 2014 Posts: 195 Italy	Originally Posted by racerhog My 2 Cents.... Dont spin the pump over 6000 RPM'S.. My 2 cents on the Vacuum 12-14" I prefer the 4 Vane Pump. But as long as the one you using will pull whatever vacuum setting you feel you need and it's working and your not having to rebuild the pump all the time. Run it... But like I said. Thats just my point of view. my pump run at over 7500 because have same pulley on the crank same diameter on the pump .... 1970 Cuda 496 street driven 9.22@150 1971 Demon 572 7.82@176 1957 Desoto Adventurer Convertible 345 Hemi 1958 Plymouth Fury Christine 2008 Dodge Ram 1500 Hemi 1970 Dodge ChallengerRT 6pack 4 speed 1 of 135 1968 Dodge Charger RT 4 speed

Re: 572 Vacum Pump [Re: Raffaplymouth60] #2630494 03/08/19 06:33 PM 03/08/19 06:33 PM
Joined: Aug 2003 Posts: 43,144 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,144 Bend,OR USA	Originally Posted by Raffaplymouth60 Originally Posted by racerhog My 2 Cents.... Dont spin the pump over 6000 RPM'S.. My 2 cents on the Vacuum 12-14" I prefer the 4 Vane Pump. But as long as the one you using will pull whatever vacuum setting you feel you need and it's working and your not having to rebuild the pump all the time. Run it... But like I said. Thats just my point of view. my pump run at over 7500 because have same pulley on the crank same diameter on the pump .... You need to correct that as soon as possible. Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: 572 Vacum Pump [Re: Cab_Burge] #2630759 03/09/19 01:49 PM 03/09/19 01:49 PM
Joined: Feb 2003 Posts: 991 Addison,IL OUTLAWSSAA super stock
OUTLAWSSAA super stock Joined: Feb 2003 Posts: 991 Addison,IL	Its supposed to be 2 to 1,with the 2(bigger pulley) on the pump.

Re: 572 Vacum Pump [Re: OUTLAWSSAA] #2638192 03/28/19 05:52 PM 03/28/19 05:52 PM
Joined: Mar 2014 Posts: 195 Italy R Raffaplymouth60 OP member
Raffaplymouth60 OP member R Joined: Mar 2014 Posts: 195 Italy	New Drive Pulley installed ! solved ! now correct vacuum ! 1970 Cuda 496 street driven 9.22@150 1971 Demon 572 7.82@176 1957 Desoto Adventurer Convertible 345 Hemi 1958 Plymouth Fury Christine 2008 Dodge Ram 1500 Hemi 1970 Dodge ChallengerRT 6pack 4 speed 1 of 135 1968 Dodge Charger RT 4 speed

Re: 572 Vacum Pump [Re: Raffaplymouth60] #2638194 03/28/19 05:54 PM 03/28/19 05:54 PM
Joined: Mar 2014 Posts: 195 Italy R Raffaplymouth60 OP member
Raffaplymouth60 OP member R Joined: Mar 2014 Posts: 195 Italy	1970 Cuda 496 street driven 9.22@150 1971 Demon 572 7.82@176 1957 Desoto Adventurer Convertible 345 Hemi 1958 Plymouth Fury Christine 2008 Dodge Ram 1500 Hemi 1970 Dodge ChallengerRT 6pack 4 speed 1 of 135 1968 Dodge Charger RT 4 speed

Re: 572 Vacum Pump [Re: Raffaplymouth60] #2638195 03/28/19 05:58 PM 03/28/19 05:58 PM
Joined: Mar 2014 Posts: 195 Italy R Raffaplymouth60 OP member
Raffaplymouth60 OP member R Joined: Mar 2014 Posts: 195 Italy	1970 Cuda 496 street driven 9.22@150 1971 Demon 572 7.82@176 1957 Desoto Adventurer Convertible 345 Hemi 1958 Plymouth Fury Christine 2008 Dodge Ram 1500 Hemi 1970 Dodge ChallengerRT 6pack 4 speed 1 of 135 1968 Dodge Charger RT 4 speed

Re: 572 Vacum Pump [Re: Raffaplymouth60] #2638196 03/28/19 05:59 PM 03/28/19 05:59 PM
Joined: Mar 2014 Posts: 195 Italy R Raffaplymouth60 OP member
Raffaplymouth60 OP member R Joined: Mar 2014 Posts: 195 Italy	Last edited by Raffaplymouth60; 03/28/19 06:02 PM. 1970 Cuda 496 street driven 9.22@150 1971 Demon 572 7.82@176 1957 Desoto Adventurer Convertible 345 Hemi 1958 Plymouth Fury Christine 2008 Dodge Ram 1500 Hemi 1970 Dodge ChallengerRT 6pack 4 speed 1 of 135 1968 Dodge Charger RT 4 speed

Re: 572 Vacum Pump [Re: Raffaplymouth60] #2638227 03/28/19 07:34 PM 03/28/19 07:34 PM
Joined: Feb 2017 Posts: 566 Texas R RustyM mopar
RustyM mopar R Joined: Feb 2017 Posts: 566 Texas	Glad you got it sorted, you have beautiful cars.

Re: 572 Vacum Pump [Re: Raffaplymouth60] #2638242 03/28/19 08:22 PM 03/28/19 08:22 PM
Joined: Oct 2007 Posts: 4,206 New York polyspheric master
polyspheric master Joined: Oct 2007 Posts: 4,206 New York	Engine displacement is a big part of the problem. You have higher ring leakage, more thermal expansion of gasses under the piston, and much higher pressure cycling due to engine rotation than a 400" engine. Bringing the case pressure down needs a big pump, more speed, or some combination of both. For those with a clean sheet of paper: more pan volume is always better. Boffin Emeritus

Page 3 of 3

1

2

3

Moderated by Al_Alguire, Hotwheelsjr, moparts, not_a_charger, RangerDan440, tboomer

Hop To

Powered by UBB.threads™ PHP Forum Software 7.7.1