|
Re: Change valve seals w/out pulling heads?
[Re: dodgedartgt]
#1397810
03/05/13 06:41 PM
03/05/13 06:41 PM
|
Joined: Jan 2006
Posts: 704
USA
rftroy
super stock
|
super stock
Joined: Jan 2006
Posts: 704
USA
|
You need this.
KD part number 901. $6.80 on Amazon.
You also need an air compressor, and an air fitting for the KD tool.
Screw tool into spark plug tube and turn up air pressure. This holds valves in place when you remove the valve springs.
You will also need a valve spring compressor.
KD has a couple. Model # 2078 is on Amazon for $27.92.
Bob
AAR 4-speed 3.91, Tor-Red;
70 440 6 pack Roadrunner 4-speed 3.54, Plum Crazy;
68 Formula S conv 383 4-speed 3.23, Electric Blue;
69 Barracuda conv Slant 6 OD4 2.94, 71 B5 Blue;
78 Lil' Red Truck, Red;
70 Challenger S/E. 505 6 pack, Passon 5-speed, 3.55, B7 Blue
|
|
|
Re: Change valve seals w/out pulling heads?
[Re: rftroy]
#1397811
03/05/13 06:44 PM
03/05/13 06:44 PM
|
Joined: Jul 2011
Posts: 817
Eugene, Oregon
Secret Chimp
super stock
|
super stock
Joined: Jul 2011
Posts: 817
Eugene, Oregon
|
The air compressor trick is needlessly complex and risky - if any part of the chain fails, you've dropped a valve. The rope trick works just as well and is more reliable - feed some rope into the spark plug hole, turn the crank until it stops, etc. I did both sides of my engine this way with no trouble.
1967 Dodge Coronet Deluxe station wagon
1.03" T-bars, QA1 arms/rods, Cordoba/GM Metric/Volare brake & knuckle, XHDs, Hellwig rear sway, 318 Magnum w/ air gap, 727, 3.23s
|
|
|
Re: Change valve seals w/out pulling heads?
[Re: 70Cuda383]
#1397814
03/05/13 06:54 PM
03/05/13 06:54 PM
|
Joined: Aug 2010
Posts: 343
S.E.Mich
drew72
enthusiast
|
enthusiast
Joined: Aug 2010
Posts: 343
S.E.Mich
|
Quote:
Quote:
The air compressor trick is needlessly complex and risky - if any part of the chain fails, you've dropped a valve. The rope trick works just as well and is more reliable - feed some rope into the spark plug hole, turn the crank until it stops, etc. I did both sides of my engine this way with no trouble.
Valid point! I did some valve work on a motor once...I'd hate to think what would have happened if the hose on the air compressor blew apart when I had the springs off! 
Done it with the air compressor 100's of times. Never even heard of that process failing. If your equipment is in that bad a shape, maybe you shouldn't be working on cars.
|
|
|
Re: Change valve seals w/out pulling heads?
[Re: mickm]
#1397815
03/05/13 06:55 PM
03/05/13 06:55 PM
|
Joined: Aug 2010
Posts: 343
S.E.Mich
drew72
enthusiast
|
enthusiast
Joined: Aug 2010
Posts: 343
S.E.Mich
|
Quote:
if the engine is at TDC, how far can the valve drop in?
rope version is simpler, and if you don't have an air compressor, than it's a moot point, but dropping a valve inside the engine isn't an issue.
When you use air, the piston is forced to BDC.
|
|
|
Re: Change valve seals w/out pulling heads?
[Re: drew72]
#1397816
03/05/13 07:10 PM
03/05/13 07:10 PM
|
Joined: Jul 2006
Posts: 4,179
California
mickm
master
|
master
Joined: Jul 2006
Posts: 4,179
California
|
Quote:
Quote:
if the engine is at TDC, how far can the valve drop in?
rope version is simpler, and if you don't have an air compressor, than it's a moot point, but dropping a valve inside the engine isn't an issue.
When you use air, the piston is forced to BDC.
if you set it at exactly TDC, like doing a leakdown test, then you are fine. of course, you do have to be precise, just like doing a leakdown.
|
|
|
Re: Change valve seals w/out pulling heads?
[Re: mickm]
#1397817
03/06/13 07:48 AM
03/06/13 07:48 AM
|
Joined: Jan 2003
Posts: 21,074
Niles , Ohio
therocks
oh wait.but hey.lets see.oh yeah.
|
oh wait.but hey.lets see.oh yeah.
Joined: Jan 2003
Posts: 21,074
Niles , Ohio
|
Ive also done a bunch with air.I use a compression tester type hose for the air hook up.I have the KD tool and it works but if you have heavy springs its tough.Also at a PB booster can be hard to get to.My kid bought the tool that bolts to the head and levers the spring down.had the heads done on his 413 in about an hour with it.Mancini has them for about 60 bucks.I think someone had on for sale in the parts section also.Rocky
Chrysler Firepower
|
|
|
Re: Change valve seals w/out pulling heads?
[Re: drew72]
#1397820
03/06/13 10:12 AM
03/06/13 10:12 AM
|
Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383
Too Many Posts
|
Too Many Posts
Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
|
Quote:
Quote:
Quote:
The air compressor trick is needlessly complex and risky - if any part of the chain fails, you've dropped a valve. The rope trick works just as well and is more reliable - feed some rope into the spark plug hole, turn the crank until it stops, etc. I did both sides of my engine this way with no trouble.
Valid point! I did some valve work on a motor once...I'd hate to think what would have happened if the hose on the air compressor blew apart when I had the springs off!
Done it with the air compressor 100's of times. Never even heard of that process failing. If your equipment is in that bad a shape, maybe you shouldn't be working on cars.
It's not about the quality of my equipment. it's about me having the luck that I do, and Murphy always seeming to be on "the other guy's side"
I'm the guy who does something a hundred times and never has a problem. never even imagined a problem could happen...then some wise guy comes along and says "you shouldn't do that, you might ____________" I respond with "meh, I've done it a hundred times and never had a problem" and at that exact moment, what I was just warned about happening, happens.
**Photobucket sucks**
|
|
|
Re: Change valve seals w/out pulling heads?
[Re: 70Cuda383]
#1397821
03/06/13 10:25 AM
03/06/13 10:25 AM
|
Joined: Aug 2010
Posts: 343
S.E.Mich
drew72
enthusiast
|
enthusiast
Joined: Aug 2010
Posts: 343
S.E.Mich
|
Quote:
Quote:
Quote:
Quote:
The air compressor trick is needlessly complex and risky - if any part of the chain fails, you've dropped a valve. The rope trick works just as well and is more reliable - feed some rope into the spark plug hole, turn the crank until it stops, etc. I did both sides of my engine this way with no trouble.
Valid point! I did some valve work on a motor once...I'd hate to think what would have happened if the hose on the air compressor blew apart when I had the springs off!
Done it with the air compressor 100's of times. Never even heard of that process failing. If your equipment is in that bad a shape, maybe you shouldn't be working on cars.
It's not about the quality of my equipment. it's about me having the luck that I do, and Murphy always seeming to be on "the other guy's side"
I'm the guy who does something a hundred times and never has a problem. never even imagined a problem could happen...then some wise guy comes along and says "you shouldn't do that, you might ____________" I respond with "meh, I've done it a hundred times and never had a problem" and at that exact moment, what I was just warned about happening, happens.
Sorry, I wasn't implying anything about your equipment specifically. Just a general thought.
|
|
|
Re: Change valve seals w/out pulling heads?
[Re: 70Cuda383]
#1397822
03/06/13 10:38 AM
03/06/13 10:38 AM
|
Joined: May 2003
Posts: 15,487
Florida
scratchnfotraction
I Live Here
|
I Live Here
Joined: May 2003
Posts: 15,487
Florida
|
Quote:
Quote:
Quote:
Quote:
The air compressor trick is needlessly complex and risky - if any part of the chain fails, you've dropped a valve. The rope trick works just as well and is more reliable - feed some rope into the spark plug hole, turn the crank until it stops, etc. I did both sides of my engine this way with no trouble.
Valid point! I did some valve work on a motor once...I'd hate to think what would have happened if the hose on the air compressor blew apart when I had the springs off!
Done it with the air compressor 100's of times. Never even heard of that process failing. If your equipment is in that bad a shape, maybe you shouldn't be working on cars.
It's not about the quality of my equipment. it's about me having the luck that I do, and Murphy always seeming to be on "the other guy's side"
I'm the guy who does something a hundred times and never has a problem. never even imagined a problem could happen...then some wise guy comes along and says "you shouldn't do that, you might ____________" I respond with "meh, I've done it a hundred times and never had a problem" and at that exact moment, what I was just warned about happening, happens.
I have had the valve slip down enuff in the guide i could not get a hold of it to pull it back up.
and you got to remember to whack the retainer/spring to unlock it before your air trick. with the spring compressed,retainer stuck to valve tip,head on engine, air compressor holding valve up... thats before I droped the valve in the cyl.
after the retainer/spring was off. air holding the valve up, I lost it putting the plastic sleeve on the valve tip 
someone spoke and it sliped right down below the guide.
I am a shadtree parts changer so I will use the shadtree rope in the cyl trick every time. 
|
|
|
Re: Change valve seals w/out pulling heads?
[Re: dodgedartgt]
#1397825
03/06/13 03:35 PM
03/06/13 03:35 PM
|
Joined: Jan 2003
Posts: 21,074
Niles , Ohio
therocks
oh wait.but hey.lets see.oh yeah.
|
oh wait.but hey.lets see.oh yeah.
Joined: Jan 2003
Posts: 21,074
Niles , Ohio
|
Get a small telescoping magnet also.Helps to get the locks off and on.They can be slippery.Rocky
Chrysler Firepower
|
|
|
|
|
