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Ok so my car is 5 tenths slow (update ) #1252233 06/16/12 09:36 PM 06/16/12 09:36 PM
Joined: Nov 2003 Posts: 7,348 Mt.Vernon ,Ohio VernMotor OP master
VernMotor OP master Joined: Nov 2003 Posts: 7,348 Mt.Vernon ,Ohio	Sounds like someone put a two barrel carb and a set of mufflers on it. 3 carbs-2 MSD boxs-2 fuel pumps-3 sets of plugs-cap&rotor. all been change. check valve lash 5 times ! springs look ok not that old-Just took the front of the motor apart everything on the timing chain looks great. also change it from e-85 to gas no change. timing is rock solid. 18-34 . nothing in the oil filter. compression test good 100-170 . will not rev up..not crisp and clean. What else to check- ideas..split them out !

Re: Ok so my car is 5 tenths slow [Re: VernMotor] #1252234 06/16/12 09:49 PM 06/16/12 09:49 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Is the cable pulling the carb open and I would pull the spring and check the pressure... has the balancer moved

Re: Ok so my car is 5 tenths slow [Re: VernMotor] #1252235 06/16/12 10:07 PM 06/16/12 10:07 PM
Joined: Jul 2009 Posts: 237 Redding,CA USA 440charger500 enthusiast
440charger500 enthusiast Joined: Jul 2009 Posts: 237 Redding,CA USA	You might want to check your muffler bearing!

Re: Ok so my car is 5 tenths slow [Re: 440charger500] #1252236 06/16/12 10:10 PM 06/16/12 10:10 PM
Joined: Nov 2003 Posts: 7,348 Mt.Vernon ,Ohio VernMotor OP master
VernMotor OP master Joined: Nov 2003 Posts: 7,348 Mt.Vernon ,Ohio	carb coming all the open. ATI bal- still looks great has not moved

Re: Ok so my car is 5 tenths slow [Re: VernMotor] #1252237 06/16/12 10:25 PM 06/16/12 10:25 PM
Joined: Jan 2003 Posts: 4,421 in a chair mopartony master
mopartony master Joined: Jan 2003 Posts: 4,421 in a chair	fuel regulator? Are you running hoses and not tubing? could be colapsing the hose, no fuel then. But if you had E-85 in it. Rebuild the carb and clean it out. Mine would not idle, revved fine, idle = crap. rebuilt carb = charm. E-85 is kind of nasty stuff. you will see a gray/black/silver sediment in the bowls of the carb. If it doesn't work can get my back?

Re: Ok so my car is 5 tenths slow [Re: mopartony] #1252238 06/16/12 10:37 PM 06/16/12 10:37 PM
Joined: Nov 2003 Posts: 7,348 Mt.Vernon ,Ohio VernMotor OP master
VernMotor OP master Joined: Nov 2003 Posts: 7,348 Mt.Vernon ,Ohio	well I have 3 three pieces of 2" long rubber hose on the car all the rest is steel. I have taken them all off and looked at them. and flow tested both pumps 3/4 gal in 30 sec. checked the vent on the tank also.both carbs are clean. both been check 2 times now. siting at Idle with 7 psi of fuel pressure it just don't rev up quick and clean.

Re: Ok so my car is 5 tenths slow [Re: VernMotor] #1252239 06/16/12 11:19 PM 06/16/12 11:19 PM
Joined: Mar 2007 Posts: 3,300 Northern Indiana Dunnuck Racing master
Dunnuck Racing master Joined: Mar 2007 Posts: 3,300 Northern Indiana	KeithVern, I would check to make sure you have good 12+ volts to the MSD box and a good ground. Also check the resistance at the pick up coil and check the reluctor gap. Probably something simple,if it were valvesprings,I would think it would rev okay and pop and bang at high rpm. Keith www.dunnuckracing.com

Re: Ok so my car is 5 tenths slow [Re: Dunnuck Racing] #1252240 06/16/12 11:24 PM 06/16/12 11:24 PM
Joined: Nov 2003 Posts: 7,348 Mt.Vernon ,Ohio VernMotor OP master
VernMotor OP master Joined: Nov 2003 Posts: 7,348 Mt.Vernon ,Ohio	I have check the gap. do you know what the resistance should be. it is a old stock style. Yep that what I thought on the springs in fact I just told my wife this LOL.. she is reading !!

Re: Ok so my car is 5 tenths slow [Re: VernMotor] #1252241 06/16/12 11:27 PM 06/16/12 11:27 PM
Joined: Dec 2005 Posts: 1,495 Shelby mi. J JAKE68 pro stock
JAKE68 pro stock J Joined: Dec 2005 Posts: 1,495 Shelby mi.	You have a PM. Jake JAKES AUTOMOTIVE

Re: Ok so my car is 5 tenths slow [Re: VernMotor] #1252242 06/16/12 11:28 PM 06/16/12 11:28 PM
Joined: Mar 2006 Posts: 9,833 MI, usa dvw master
dvw master Joined: Mar 2006 Posts: 9,833 MI, usa	If it runs smooth with no miss,I'd be suspecting the converter. Doug

Re: Ok so my car is 5 tenths slow [Re: VernMotor] #1252243 06/16/12 11:29 PM 06/16/12 11:29 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	The one set of springs I had did pop or miss... it was just super lazy ... it was in valve float on the whole run.... it was just a suggestion... but you changed out most everything

Re: Ok so my car is 5 tenths slow [Re: VernMotor] #1252244 06/16/12 11:31 PM 06/16/12 11:31 PM
Joined: Mar 2007 Posts: 3,300 Northern Indiana Dunnuck Racing master
Dunnuck Racing master Joined: Mar 2007 Posts: 3,300 Northern Indiana	ll the pickups I tested that were Mopar units or aftermarket replacements measured between 150-400 ohms. MSD units are around 750 so unless something else is bad,it should still run with that much. Maybe a bad spot on one of the wires going to or from the box? Keith www.dunnuckracing.com

Re: Ok so my car is 5 tenths slow [Re: Dunnuck Racing] #1252245 06/16/12 11:55 PM 06/16/12 11:55 PM
Joined: Nov 2003 Posts: 7,348 Mt.Vernon ,Ohio VernMotor OP master
VernMotor OP master Joined: Nov 2003 Posts: 7,348 Mt.Vernon ,Ohio	Maybe a bad spot on one of the wires going to or from the box. You mean power or ground to the MSD.? I will load test them tomorrow.

Re: Ok so my car is 5 tenths slow [Re: VernMotor] #1252246 06/17/12 12:03 AM 06/17/12 12:03 AM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: Maybe a bad spot on one of the wires going to or from the box. You mean power or ground to the MSD.? I will load test them tomorrow. You should be able to stick a pin in the hot lead (big red wire)and see if you have 12+ volts... do it close to the box with the engine running EDIT I was just thinking Jamie... the big red and the black ground come on the box so that would be a waste to test it there(at the box) so test it where you hook the red lead up at Last edited by MR_P_BODY; 06/17/12 12:34 AM.

Re: Ok so my car is 5 tenths slow [Re: MR_P_BODY] #1252247 06/17/12 12:15 AM 06/17/12 12:15 AM
Joined: Aug 2009 Posts: 2,042 Mooresburg, Tn ' '72CudaRacer top fuel
'72CudaRacer top fuel ' Joined: Aug 2009 Posts: 2,042 Mooresburg, Tn	Converter? Where is it slow? 60'? ET? MPH? Did it go away all at once or just gradually slow down? When mine looses .5 sec all at once, it's usually carrying a cylinder? Another question, if it lost it all at once, what changed? Possibly has a lobe down on the camshaft? Brian Dunnigan

Re: Ok so my car is 5 tenths slow [Re: '72CudaRacer] #1252248 06/17/12 02:12 AM 06/17/12 02:12 AM
Joined: Dec 2005 Posts: 3,589 Topeka Kansas K ksj master
ksj master K Joined: Dec 2005 Posts: 3,589 Topeka Kansas	You drove rather than Jenni? Yea I know f u.

Re: Ok so my car is 5 tenths slow [Re: ksj] #1252249 06/17/12 03:20 AM 06/17/12 03:20 AM
Joined: Aug 2003 Posts: 3,245 Between a rock & a hard place C cudadoug master
cudadoug master C Joined: Aug 2003 Posts: 3,245 Between a rock & a hard place	Had the exact same thing once. Changed EVERYTHING. Had the motor half tore apart twice. No help... Turned out the COIL was going away. Well changed ALMOST everything. New coil and bada bom, bada bing! All of my lost ET and MPH back.

Re: Ok so my car is 5 tenths slow [Re: cudadoug] #1252250 06/17/12 03:35 AM 06/17/12 03:35 AM
Joined: Jun 2003 Posts: 9,225 Charleston S sixpackgut Drag Week Mod Champion
sixpackgut Drag Week Mod Champion S Joined: Jun 2003 Posts: 9,225 Charleston	had similar problem. it was a wire comming out of my bulkhead connector. i did everything you did at least twice Gen 3 power 6.22@110, 9.85@135 Follow @g3hemiswap on instagram performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs

Re: Ok so my car is 5 tenths slow [Re: VernMotor] #1252251 06/17/12 04:51 AM 06/17/12 04:51 AM
Joined: Dec 2006 Posts: 3,667 Arizona C Chris'sBarracuda master
Chris'sBarracuda master C Joined: Dec 2006 Posts: 3,667 Arizona	Quote: Sounds like someone put a two barrel carb and a set of mufflers on it. 3 carbs-2 MSD boxs-2 fuel pumps-3 sets of plugs-cap&rotor. all been change. check valve lash 5 times ! springs look ok not that old-Just took the front of the motor apart everything on the timing chain looks great. also change it from e-85 to gas no change. timing is rock solid. 18-34 . nothing in the oil filter. compression test good 100-170 . will not rev up..not crisp and clean. What else to check- ideas..split them out ! What? 100psi is barely enough to fire a cylinder.. Chris..

Re: Ok so my car is 5 tenths slow [Re: Chris'sBarracuda] #1252252 06/17/12 10:14 AM 06/17/12 10:14 AM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: Quote: Sounds like someone put a two barrel carb and a set of mufflers on it. 3 carbs-2 MSD boxs-2 fuel pumps-3 sets of plugs-cap&rotor. all been change. check valve lash 5 times ! springs look ok not that old-Just took the front of the motor apart everything on the timing chain looks great. also change it from e-85 to gas no change. timing is rock solid. 18-34 . nothing in the oil filter. compression test good 100-170 . will not rev up..not crisp and clean. What else to check- ideas..split them out ! What? 100psi is barely enough to fire a cylinder.. Chris.. I sure didnt see that 100... in my mind it was 160-170 but your right... 100 will barely light the cyl

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