valve spring removal with head on - Moparts Forums

Register Log In Moparts Forums Moparts Question and Answer valve spring removal with head on

Print Thread

valve spring removal with head on #1547877 12/15/13 05:27 PM 12/15/13 05:27 PM
Joined: Apr 2007 Posts: 220 Wichita,ks. jst19600 OP enthusiast
jst19600 OP enthusiast Joined: Apr 2007 Posts: 220 Wichita,ks.	Im trying to remove the valve springs with heads on engine.I purchased a valve spring removal tool that bolts to the rocker shaft stands.Ive hooked up my air compressor to the spark plug hole and have aired it up to 120 psi but the valve still goes down and it wont break free from the retainer.Need suggestions on what i should try,do not want to pull heads off.

Re: valve spring removal with head on [Re: jst19600] #1547878 12/15/13 05:34 PM 12/15/13 05:34 PM
Joined: Nov 2013 Posts: 595 Nashville, Tennessee Tempest mopar
Tempest mopar Joined: Nov 2013 Posts: 595 Nashville, Tennessee	Tap retainer w/ rubber mallet and try again. Also, I prefer the rope method and TDC but that's just me. If you lose air pressure for any reason, you are pulling the head.

Re: valve spring removal with head on [Re: Tempest] #1547879 12/15/13 05:37 PM 12/15/13 05:37 PM
Joined: Jan 2003 Posts: 25,877 Rio Linda, CA John_Kunkel Too Many Posts
John_Kunkel Too Many Posts Joined: Jan 2003 Posts: 25,877 Rio Linda, CA	I like to use a shot-filled hammer on a deep-well socket placed on the retainer instead of hitting the retainer directly. The INTERNET, the MISinformation superhighway

Re: valve spring removal with head on [Re: John_Kunkel] #1547880 12/15/13 05:42 PM 12/15/13 05:42 PM
Joined: Apr 2007 Posts: 220 Wichita,ks. jst19600 OP enthusiast
jst19600 OP enthusiast Joined: Apr 2007 Posts: 220 Wichita,ks.	Do i have enough air pressure?Whats the minimum i can safely have without dropping the valve?I do have the cylinder at TDC.

Re: valve spring removal with head on [Re: jst19600] #1547881 12/15/13 05:49 PM 12/15/13 05:49 PM
Joined: Jan 2003 Posts: 32,947 Grand Prairie,Texas stumpy I Win
stumpy I Win Joined: Jan 2003 Posts: 32,947 Grand Prairie,Texas	Plenty enough pressure. The piston won't be at TDC it will be all the way down. The air pressure pushes it down when it pressurizes the cylinder. Tapping the retainer lightly will release any varnish holding it in place.

Re: valve spring removal with head on [Re: stumpy] #1547882 12/15/13 07:19 PM 12/15/13 07:19 PM
Joined: Jan 2003 Posts: 25,200 Upper Midwest M MoparforLife Too Many Posts
MoparforLife Too Many Posts M Joined: Jan 2003 Posts: 25,200 Upper Midwest	Quote: Plenty enough pressure. The piston won't be at TDC it will be all the way down. The air pressure pushes it down when it pressurizes the cylinder. Tapping the retainer lightly will release any varnish holding it in place. The pressure doesn't necessarily push the piston down. If you leave a spark plug or so in the heads it will hold.

Re: valve spring removal with head on [Re: stumpy] #1547883 12/15/13 07:26 PM 12/15/13 07:26 PM
Joined: Aug 2003 Posts: 8,716 Baltimore/Denver 64Post master
64Post master Joined: Aug 2003 Posts: 8,716 Baltimore/Denver	I don�t use rope or air. I bring #1 to TDC and use the 180� method, which brings 2 pistons to TDC simultaneously. I�ll smack the retainers with a socket, then do 4 valves at a time. Turn the crank 180� and repeat on the next pair of cylinders.

Re: valve spring removal with head on [Re: 64Post] #1547884 12/15/13 07:55 PM 12/15/13 07:55 PM
Joined: Apr 2010 Posts: 4,154 bethlehem pa M mikemee1331 master
mikemee1331 master M Joined: Apr 2010 Posts: 4,154 bethlehem pa	Quote: I don�t use rope or air. I bring #1 to TDC and use the 180� method, which brings 2 pistons to TDC simultaneously. I�ll smack the retainers with a socket, then do 4 valves at a time. Turn the crank 180� and repeat on the next pair of cylinders. never changed a spring myself but this method seems to be the easiest? what are the 'pitfalls' to this method?

Re: valve spring removal with head on [Re: mikemee1331] #1547885 12/15/13 08:05 PM 12/15/13 08:05 PM
Joined: Jan 2003 Posts: 21,076 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: 21,076 Niles , Ohio	If the pistons are down it the hole and not a zero deck the valve will drop.I almost always use air even when I did them at the shop.Ive used the rope a few times.Last time we did them on the kids 413 it took about an hour to do all 8 cylinders.Rocky Chrysler Firepower

Re: valve spring removal with head on [Re: therocks] #1547886 12/15/13 08:16 PM 12/15/13 08:16 PM
Joined: Apr 2010 Posts: 4,154 bethlehem pa M mikemee1331 master
mikemee1331 master M Joined: Apr 2010 Posts: 4,154 bethlehem pa	Quote: If the pistons are down it the hole and not a zero deck the valve will drop.I almost always use air even when I did them at the shop.Ive used the rope a few times.Last time we did them on the kids 413 it took about an hour to do all 8 cylinders.Rocky that makes sense but who wouldn't check to make sure the piston was at TDC. it just seems so simple? perhaps i've missed something here...

Re: valve spring removal with head on [Re: mikemee1331] #1547887 12/15/13 08:28 PM 12/15/13 08:28 PM
Joined: Jan 2003 Posts: 32,947 Grand Prairie,Texas stumpy I Win
stumpy I Win Joined: Jan 2003 Posts: 32,947 Grand Prairie,Texas	Down in the hole means the piston isn't at the top edge of cylinder which all not all pistons are at TDC. A zero deck piston is at the top of the cylinder at TDC but most stock pistons are not zero deck. They are below the top by a good bit in some low compression motors.

Re: valve spring removal with head on [Re: stumpy] #1547888 12/15/13 08:31 PM 12/15/13 08:31 PM
Joined: Apr 2010 Posts: 4,154 bethlehem pa M mikemee1331 master
mikemee1331 master M Joined: Apr 2010 Posts: 4,154 bethlehem pa	Quote: Down in the hole means the piston isn't at the top edge of cylinder which all not all pistons are at TDC. A zero deck piston is at the top of the cylinder at TDC but most stock pistons are not zero deck. They are below the top by a good bit in some low compression motors. thank you Stumpy! now it clicks!

Re: valve spring removal with head on [Re: mikemee1331] #1547889 12/15/13 08:37 PM 12/15/13 08:37 PM
Joined: Aug 2003 Posts: 8,716 Baltimore/Denver 64Post master
64Post master Joined: Aug 2003 Posts: 8,716 Baltimore/Denver	Quote: Quote: If the pistons are down it the hole and not a zero deck the valve will drop.I almost always use air even when I did them at the shop.Ive used the rope a few times.Last time we did them on the kids 413 it took about an hour to do all 8 cylinders.Rocky that makes sense but who wouldn't check to make sure the piston was at TDC. it just seems so simple? perhaps i�ve missed something here... Valve drop: Due to various piston top designs, it�s wise to do the first valve and note the valve drop. If the valve drops so much that you need a second person to hold the valve up with a pencil magnet while you compress the spring and install the locks then maybe you might want to use hose to hold the valve up.

Re: valve spring removal with head on [Re: 64Post] #1547890 12/15/13 09:14 PM 12/15/13 09:14 PM
Joined: Apr 2007 Posts: 220 Wichita,ks. jst19600 OP enthusiast
jst19600 OP enthusiast Joined: Apr 2007 Posts: 220 Wichita,ks.	Thanks for the help,got them all changed.I brought each cylinder up to its TDC and used a breakover bar on my rachet to stop the crank bolt from turning.

Re: valve spring removal with head on [Re: jst19600] #1547891 12/15/13 09:52 PM 12/15/13 09:52 PM
Joined: Aug 2003 Posts: 43,228 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,228 Bend,OR USA	Quote: Thanks for the help,got them all changed.I brought each cylinder up to its TDC and used a breakover bar on my rachet to stop the crank bolt from turning. You did it the smart way with the pistons at TDC, once the rocker arms and shaft assemblys are removed it doesn't matter if the cam or distributors match the piston location, as long as the piston is at TDC when you work on that set of valves the valve can not drop all the way into the cylinders when Murpphy strikes John Kunkels method works well on seperating the keepers from the retainers Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: valve spring removal with head on [Re: Cab_Burge] #1547892 12/15/13 10:24 PM 12/15/13 10:24 PM
Joined: Apr 2007 Posts: 220 Wichita,ks. jst19600 OP enthusiast
jst19600 OP enthusiast Joined: Apr 2007 Posts: 220 Wichita,ks.	Yes,whapped them a few times with a socket and mallet and they came free.Now these new valves springs better better correct my performance issue i had this year.

Re: valve spring removal with head on [Re: jst19600] #1547893 12/16/13 12:39 AM 12/16/13 12:39 AM
Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska	You already took care of it but as said I just put a socket on the retainer & give the socket a good rap with a medium hammer so the retainer/locks/valve ain't frozen to each other then compress the retainer/spring like you were originally doing. If they're still stuck put the socket up there again & hit it harder. A pencil or telescoping magnet works good for retrieving the keepers live every 24 hour block of time like it's your last day on earth

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

Hop To

Powered by UBB.threads™ PHP Forum Software 7.7.1