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Author
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Topic: "Dry" Rocker on #3 Cylinder
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Boss Hoss
Gearhead Posts: 223
From: Georgia
Registered: Mar 2001
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posted 12-22-2001 06:44 PM
   
OK, I have finally gotten my 289 V8's valves adjusted pretty well, thanks to all the great advice from Moneymaker, Steve, and others here at Mustangs and More!  I cut a slot in an old valve cover to watch my rockers (and to adjust them further, if needed). Ya know that little stream of oil that squirts from the little hole at the top of each rocker and splashes down onto the rocker's adjusting nut? On my #3 cylinder's intake valve, I noticed that the rocker does not have that little stream of oil. It's bone dry. I took a toothpick and tried to see if there was anything blocking the hole, but there doesn't seem to be anything there. What's wrong? Is this a bad thing?  ------------------
*andy* ([email protected]) also known as...***Boss Hoss*** *1965 Mustang 289 coupe*
*1996 Mustang GT coupe*
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n2oMike
Gearhead Posts: 2305
From: Spencer, WV
Registered: Jan 2001
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posted 12-22-2001 06:58 PM
Oil gets to the rockers through the hollow pushrods. See if Your #3 pushrod is clogged... which is very common. If it's clear, you'll be able to see through it (when holding it up to the light).Good Luck! ------------------
Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.geocities.com/carbedstangs/cmml_mburch.html
http://www.fortunecity.com/silverstone/healey/367 [This message has been edited by n2oMike (edited 12-22-2001).]
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PetesPonies
Journeyman Posts: 8
From: Pasadena, MD
Registered: Dec 2001
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posted 12-23-2001 11:51 PM
and yes it is a bad thing, find the problem.------------------
Pete's Ponies
Mustang RUSToration & Performance
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Moneymaker
Administrator Posts: 25052
From: Lyons, IL, USA
Registered: May 99
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posted 09-16-2002 06:56 PM
If there are no mechanical problems, then the rocker adjustment is a bit to tight. ------------------
Alex Denysenko
Co-Administrator and Moderator/ non 65-66 Mustang owner sensitivity co-ordinator NHRA/IHRA/SRA/MCA member
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Part time secret agent license #0089
Professional Manwhore
The Barry of BarrysGrrl Quote: "I never met a magazine mechanic I liked."
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69 Sportsroof
Gearhead Posts: 1823
From: Valley, Alabama, USA
Registered: Mar 2002
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posted 09-16-2002 07:06 PM
quote:
Originally posted by 66MustangGTCoupe289:
my pushrod is not rotating one of my rocker arms. whats wrong/how dow i fix?
That sounds like a cam lobe has been rounded off. You fix that by replacing the cam and lifters.
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Moneymaker
Administrator Posts: 25052
From: Lyons, IL, USA
Registered: May 99
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posted 09-16-2002 09:45 PM
Yes. ------------------
Alex Denysenko
Co-Administrator and Moderator/ non 65-66 Mustang owner sensitivity co-ordinator NHRA/IHRA/SRA/MCA member
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Part time secret agent license #0089
Professional Manwhore
The Barry of BarrysGrrl Quote: "I never met a magazine mechanic I liked."
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Hell_Fish
Gearhead Posts: 860
From: Austin, TX.
Registered: May 2002
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posted 09-17-2002 02:22 PM
Andy,
Check the push rod. I found a handful in my 302 to be blocked up. I also, found some lifters to be blocked as well. I used a piece of thin wire and a small drill bit the clean out the push rods. I used the drill bit the clear the clogs at the ends where the clogs were the thickest. Then I use the wire and pushed it all the way through. After I was done, I sprayed brake clean in it. A few time I thought the rod was cleared until I sprayed the Brake clean. It would start to go through then clog again. On my lifters, I just replaced the ones that looked clogged.------------------
Dustin C
[IMG]http://pages.moparpages.com/duster/sigs/hell_fish.gif[/IMG]
56 F-100
Mech. for wifes 69 Mustang coupe
65 Plymouth Barracuda
70 Dodge Swinger
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mustangzrule
Journeyman Posts: 87
From: Orion, MI
Registered: Sep 2002
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posted 09-18-2002 08:36 AM
Lifters can get gummed up so bad that they stay in the compressed position. This would effectively not allow the oil to be pumped up through the pushrod. I have seen this many times on older sludgy engines.
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mustangzrule
Journeyman Posts: 87
From: Orion, MI
Registered: Sep 2002
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posted 09-20-2002 10:32 AM
Thanks for the welcome - hard to miss that.The lifters can be cleaned out with mineral spirits, diesel fuel, lacquer thinner. To do it, you put the lifter in a vise with cloth around the machined surfaces. Then use a small screwdriver to pry out the retaining clip in the top - easier to do if you press in on the top of the lifter. All parts come out with a little work and can be de-gummed. I did this on my old '68 302 and it ran fine for a whole summer. When I changed to the 351 and new cam, I went with new lifters.
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ice'68
Gearhead Posts: 127
From: Fresno, CA
Registered: Apr 2002
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posted 09-20-2002 10:55 PM
Hey, MustangzRule...how was the swap from the 302 to the 351? I'm planning on doing it myself. Just wanted to know what kind of difference you noticed and if you could really feel it.
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mustangzrule
Journeyman Posts: 87
From: Orion, MI
Registered: Sep 2002
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posted 09-25-2002 11:07 AM
Ice...
Hardly any comparison. I built a 408 stroker with all the goodies and the car, how do I say this? freakin' scares me. For details, we could start a new forum thread and archive the details for all to see. It really makes the blue oval people drool and the chebby lovers scowl.Only got beat once and the guy had a 383, 6 speed, posi 355, and 11 psi boost.
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