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Author
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Topic: 66Mustang Piston Slap?
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Keota66Stang
Journeyman Posts: 7
From: Fort Collins, CO
Registered: Oct 2006
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posted 10-29-2006 07:40 PM
 
Hello, I am very new to your boards and some what new to old fords. I just bought a 1966 Mustang with a 351 Cleveland. The guy installed roller rockers and said he adjusted them, but they still sound noisy. Also I can��t tell if the passenger side bank has a bad piston or if it is just and exhaust leak. Is it normal for old fords to drip water in the exhaust? Sorry to be such a newb here. I would greatly appreciate any and all help. Thanks Here is what is in the car.
comp cam/ .570 lift .292 duration
sainless steel valves 2.19intake 1.77 exaust
cc and flow tested kline guides and plates
harland & sharp roller rockers
melling high volume oil pump
dual remote oil filters
holly street dominator intake ports matched and flow tested
800 CFM holley double pumper
carter super fuel pump
mallory uniltie distributor
t5 borg/warner 5speed transmission
motorsport short throw shifter
motorsport heavy duty clutch
motorsport flywheel and bell housing
1" sway bar
disc brakes front and rear
9" rear end w/ 4.10 gearslimited slip
lakewood chrome traction bars
trunk mounted battery
tach w/ shift light and rev limiter
new tires front 193/70 R14
rear 245/60 R15
[This message has been edited by Keota66Stang (edited 10-29-2006).]
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bob6364
Gearhead Posts: 447
From: griswold,ct usa MCA#59447
Registered: Dec 2004
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posted 10-29-2006 08:13 PM
Gee...sounds like a pretty nice engine if it was put together properly,snug up all your header bolts first maybe the slap/leak with go awayMy old Fords spit lots of water on my garage floor no biggy ,water is actually a byproduct of combustion,now if you said you had a plume of water vapor and air bubbles in your radiator I would say we have a problem. Lets see some pics  ------------------
Bob
02 Saleen #408
92 Black Vert GT
69 R Code Mach 1
71 coupe 302 99 F-250 Super Duty
2002 Exploder :)
http://community.webshots.com/album/214154666mXNhcr
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Keota66Stang
Journeyman Posts: 7
From: Fort Collins, CO
Registered: Oct 2006
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posted 10-29-2006 10:42 PM
Is it common for these rocker to sound noisy as well?
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Aussie XAXB
Gearhead Posts: 131
From: North Olmsted, Ohio
Registered: Jan 2006
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posted 11-05-2006 12:22 AM
Aftermarket roller rockers will have a sound. If you hear a ticking though the valve lash could be out of adjustment if it is a mechanical lifter cam. If it has hydraulic lifters you don't need to adjust them, and if you have a tick with the hydraulic lifters it could be a lifter that is sticking (gummed up), lifter preload is wrong, or from some other source.The sound that the rockers make that is normal is just the actuating sound. It doesn't sound as hard as a valve tick. I have shaft mount Harland Sharp roller rockers on my wife's 331 stroker I built for her and they have this sound which is normal, at least for Harland Sharp. Personally I hate to rely on someone else's work so you may want to pull the valve covers and check valve lash or lifter preload. Steve ------------------
My Mad Max Interceptor Project http://xaxbinterceptor.tripod.com Wife's 1966 Mustang Site http://purplestang66.tripod.com My Custom Part Site http://www.artisticmachine.com [This message has been edited by Aussie XAXB (edited 11-07-2006).]
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66 Racer
Journeyman Posts: 85
From: West Covina, California
Registered: Aug 2001
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posted 11-08-2006 12:11 AM
Well stock 351C dont have adjustable rockers, they torque down. If the wrong pushrod length was used and they are too short they can make noise, but SLIGHT noise may be normal.You would need to check the wear pattern on the valve tips, the roller on the rocker should be centered on the valve. Water out of the exhaust is normal when the engine is cold but when its warm (normal temp) you shouldnt get any water. Unless maybe if its cold/humid then you still may. ------------------
Under Construction 66 Coupe - - -
306, 10.2:1, 66 289 heads 1.84/1.50, mild port work, comp cams 270H cam, Performer manifold, Holley 700cfm double pumper, tri-y headers, 2.5 dual exaust w/flows, centerforce dual friction, 8" 2.79 gears, w/mini spool 1/8th mile - 8.6 @ 83mph
351w Stroker in the works
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Moneymaker
Administrator Posts: 29200
From: Lyons, IL, USA
Registered: May 99
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posted 11-08-2006 12:34 AM
He has adjustable roller rockers, not stock ones.------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/SRA member and licensed Superstock driver
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,'04 &'05
First NHRA & IHRA 289 automatic Superstock Mustang in the TENS 06-99
First SS/MA in the TENS 04-03
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
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66 Racer
Journeyman Posts: 85
From: West Covina, California
Registered: Aug 2001
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posted 11-08-2006 01:06 AM
Is it possible though that they are non adjustable pedistal mount? My buddy has pedistal mount scorpion roller rockers on his 4 barrel heads. Although someone who built a 351c should know the diff. so maybe they are adjustable stud mount rockers. I just have heard of some people making this mistake before. ------------------
Under Construction 66 Coupe - - -
306, 10.2:1, 66 289 heads 1.84/1.50, mild port work, comp cams 270H cam, Performer manifold, Holley 700cfm double pumper, tri-y headers, 2.5 dual exaust w/flows, centerforce dual friction, 8" 2.79 gears, w/mini spool 1/8th mile - 8.6 @ 83mph
351w Stroker in the works
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