rocker arm nuts!
Thread Starter
Joined: Jul 1999
Posts: 1,992
Likes: 10
From: CT
Car: 1986 Camaro SC
Engine: 305 TPI Procharged D1SC
Transmission: Tremec TKO-600
Axle/Gears: Moser 12 Bolt 3.73 posi
rocker arm nuts!
everytime i adjust my valves on the pass side they keep ticking after it runs, i bought replacement nuts, but they keep loosing up, anyone have any ideas?
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86 Camaro with 88 305 LB9 using 86 carb setup, edelbrock performer manifold, 305 S/R Torquer Heads, Hedman Headers, Crane Compucam 2032 edelbrock cat-back, gutted cat, slp underdrive pulley, mallory ignition, 305 h.o dual snorkel air cleaner, hypertech thermomaster chip,160 degree thermostat, 5-speed, 3.23 posi
95 Beretta Z26, 3100 V6, 4 Speed auto, stock
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86 Camaro with 88 305 LB9 using 86 carb setup, edelbrock performer manifold, 305 S/R Torquer Heads, Hedman Headers, Crane Compucam 2032 edelbrock cat-back, gutted cat, slp underdrive pulley, mallory ignition, 305 h.o dual snorkel air cleaner, hypertech thermomaster chip,160 degree thermostat, 5-speed, 3.23 posi
95 Beretta Z26, 3100 V6, 4 Speed auto, stock
Supreme Member
Joined: Jul 1999
Posts: 18,457
Likes: 16
From: Loveland, OH, US
Car: 4
Engine: 6
Transmission: 5
Get some regular 3/8"-24 (fine) nuts, and use them as jam nuts on top of the lock nuts.
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"So many Mustangs, so little time..."
ICON Motorsports
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"So many Mustangs, so little time..."
ICON Motorsports
Thread Starter
Joined: Jul 1999
Posts: 1,992
Likes: 10
From: CT
Car: 1986 Camaro SC
Engine: 305 TPI Procharged D1SC
Transmission: Tremec TKO-600
Axle/Gears: Moser 12 Bolt 3.73 posi
no good, bad lifter?
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86 Camaro with 88 305 LB9 using 86 carb setup, edelbrock performer manifold, 305 S/R Torquer Heads, Hedman Headers, Crane Compucam 2032 edelbrock cat-back, gutted cat, slp underdrive pulley, mallory ignition, 305 h.o dual snorkel air cleaner, hypertech thermomaster chip,160 degree thermostat, 5-speed, 3.23 posi
95 Beretta Z26, 3100 V6, 4 Speed auto, stock
------------------
86 Camaro with 88 305 LB9 using 86 carb setup, edelbrock performer manifold, 305 S/R Torquer Heads, Hedman Headers, Crane Compucam 2032 edelbrock cat-back, gutted cat, slp underdrive pulley, mallory ignition, 305 h.o dual snorkel air cleaner, hypertech thermomaster chip,160 degree thermostat, 5-speed, 3.23 posi
95 Beretta Z26, 3100 V6, 4 Speed auto, stock
Stock nuts are not like what you can buy at the hardware store. The top treads of the nut are "pinched" a little and grab onto the threads real tight. Basically, if they're in good shape and so are the trads on the rocker stud, they should not be able to back off.
I have a zillion of them laying around. If you're in the philly area drop me a line.
I have a zillion of them laying around. If you're in the philly area drop me a line.
what about locktite? they made many different kinds and some are "serviceable"
meaning you can move nuts/bolts. but i would get a set of nuts from auto store like as mentioned above.
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87 z28 bowtie aluminum 420small block dry sump crower lt. wt. knife edged crank oliver lt wt rods brodix track 1's super ram intake slp 1 3/4 headers accel dfi art carr 700 r4 3.42 gears ssm sub frame/ladder bars.....other parts on the way ,soon to be finished!! couple more weeks!!!
http://people.ne.mediaone.net/gdm
meaning you can move nuts/bolts. but i would get a set of nuts from auto store like as mentioned above.
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87 z28 bowtie aluminum 420small block dry sump crower lt. wt. knife edged crank oliver lt wt rods brodix track 1's super ram intake slp 1 3/4 headers accel dfi art carr 700 r4 3.42 gears ssm sub frame/ladder bars.....other parts on the way ,soon to be finished!! couple more weeks!!!
http://people.ne.mediaone.net/gdm
Moderator


Joined: Jul 1999
Posts: 17,265
Likes: 168
From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Are you sure the new nuts are loosening up? Put a dial gauge on the pushrod and check the cam lift compared to another lobe. It's possible that a cam lobe is worn out or a lifter has collapsed. A proper rocker nut shouldn't back off unless it's worn out.
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87 IROC-Z SuperPro ET Bracket Race Car
461 naturally aspirated Big Block
Best ET on a time slip: 11.242 altitude corrected to 10.89
Best MPH on a time slip: 121.52 altitude corrected to 125.89
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------------------
Follow my racing progress on Stephen's racing page
and check out the race car
87 IROC-Z SuperPro ET Bracket Race Car
461 naturally aspirated Big Block
Best ET on a time slip: 11.242 altitude corrected to 10.89
Best MPH on a time slip: 121.52 altitude corrected to 125.89
Altitude corrected rear wheel HP: 497.9
Best 60 foot: 1.546
Racing at 3500 feet elevation but most race days it's over 5000 feet density altitude!
Member of the Calgary Drag Racing Association
87 IROC bracket car, 91 454SS daily driver, 95 Homebuilt Harley
Thread Starter
Joined: Jul 1999
Posts: 1,992
Likes: 10
From: CT
Car: 1986 Camaro SC
Engine: 305 TPI Procharged D1SC
Transmission: Tremec TKO-600
Axle/Gears: Moser 12 Bolt 3.73 posi
no i got rocker arm nuts that are pinched from napa, i put them on adjusted after a while they ticked again so i put 2 on same thing, the cam is brand new. but i reused the stock roller lifters only 2 rockers are ticking on the pass side
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86 Camaro with 88 305 LB9 using 86 carb setup, edelbrock performer manifold, 305 S/R Torquer Heads, Hedman Headers, Crane Compucam 2032 edelbrock cat-back, gutted cat, slp underdrive pulley, mallory ignition, 305 h.o dual snorkel air cleaner, hypertech thermomaster chip,160 degree thermostat, 5-speed, 3.23 posi
95 Beretta Z26, 3100 V6, 4 Speed auto, stock
------------------
86 Camaro with 88 305 LB9 using 86 carb setup, edelbrock performer manifold, 305 S/R Torquer Heads, Hedman Headers, Crane Compucam 2032 edelbrock cat-back, gutted cat, slp underdrive pulley, mallory ignition, 305 h.o dual snorkel air cleaner, hypertech thermomaster chip,160 degree thermostat, 5-speed, 3.23 posi
95 Beretta Z26, 3100 V6, 4 Speed auto, stock
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Joel has a good point.
Roller cam lobes don't go flat, so that's out.
Possibly lifters going bad on you. Made worse if you installed tighter valve springs recently.
One last thing (this drove me nuts for a long time with one of my engines). Badly worn out valve guides. If they get real loosey goosey you'll get a tap that jsut won't go away. Worse when the engine's warm but pretty much always there. How to test for: Adjust the rocker with the engine running. Tighten the nut down 1/4 turn real quick. Tapping will go away for a second or two and then return.
Roller cam lobes don't go flat, so that's out.
Possibly lifters going bad on you. Made worse if you installed tighter valve springs recently.
One last thing (this drove me nuts for a long time with one of my engines). Badly worn out valve guides. If they get real loosey goosey you'll get a tap that jsut won't go away. Worse when the engine's warm but pretty much always there. How to test for: Adjust the rocker with the engine running. Tighten the nut down 1/4 turn real quick. Tapping will go away for a second or two and then return.
Thread Starter
Joined: Jul 1999
Posts: 1,992
Likes: 10
From: CT
Car: 1986 Camaro SC
Engine: 305 TPI Procharged D1SC
Transmission: Tremec TKO-600
Axle/Gears: Moser 12 Bolt 3.73 posi
tighter springs eh? well when i installed the cam i also slapped on a new set of world products s/r torquer 305 heads, so it's probably the lifters, thanks guys
------------------
86 Camaro with 88 305 LB9 using 86 carb setup, edelbrock performer manifold, 305 S/R Torquer Heads, Hedman Headers, Crane Compucam 2032 edelbrock cat-back, gutted cat, slp underdrive pulley, mallory ignition, 305 h.o dual snorkel air cleaner, hypertech thermomaster chip,160 degree thermostat, 5-speed, 3.23 posi
95 Beretta Z26, 3100 V6, 4 Speed auto, stock
------------------
86 Camaro with 88 305 LB9 using 86 carb setup, edelbrock performer manifold, 305 S/R Torquer Heads, Hedman Headers, Crane Compucam 2032 edelbrock cat-back, gutted cat, slp underdrive pulley, mallory ignition, 305 h.o dual snorkel air cleaner, hypertech thermomaster chip,160 degree thermostat, 5-speed, 3.23 posi
95 Beretta Z26, 3100 V6, 4 Speed auto, stock
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