Could it be a bad spring?

Thad · 03-09-2002, 10:52 PM

I did some checks today along with replacing two roller rockers because they looked very beat up. But one had a strange wear pattern around the pushrod seat like the pushrod had been tapping around the seat. Is this sign of a bad spring?

Thad · 03-11-2002, 07:25 AM

any ideas? the rockers weren't out of adjustment. i can't think of what would cause this? bad lobe on the cam?

drudis · 03-11-2002, 10:13 AM

Need more to go on...

Why were you replacing the rockers?
Too much play (valvelash) originally?
Is the cam lobe wasted?...

Thad · 03-11-2002, 02:40 PM

I replaced them because they had big chunks taken out like they were put through grinding wheel torture or something. they might have been ok dimensionally but didn't want to take the chance.
See what's been happening is that i've been getting this loud tapping noise on the drivers side of the engine and can't figure out what it is. i've replaced the lifters and adjusted the rockers several times to try and eliminate it but nothing has worked. during the lifter replacement i noticed the damage on the two rockers. i just replaced the rockers this past weekend and noticed more damage on one of the rockers i replaced which is the wear around the pushrod seat. i adjusted the rockers 1/2 turn passed 0 lash. there's no wear on the pushrods and they're straight. rocker studs are nice and solid, none have backed out. pushrod guide plates are good, no un-allowable play. i took the car to a persons this morning and he suggested a bad valve guide, maybe a lazy or cracked spring and could also be a valve seat that has popped off and tapping around. I just don't know!! i'm thinking of just bitting the bullet and having the heads completely reworked.
Oh and i've also replaced both header gaskets.

i think i'm losing my mind!!

Thad · 03-11-2002, 02:44 PM

Forgot the cam question. i looked down the lifter holes with a flash light and turned the engine.Didn't see any wear on the lobes.

joe4speed · 03-12-2002, 10:31 AM

Thad · 03-12-2002, 11:46 PM

What does ttt mean?

Hozer 88GTConv · 03-12-2002, 11:59 PM

Don't your heads require TF pushrods? They are a very special length.

Thad · 03-13-2002, 12:22 AM

I've got the TF 6.700 hardened pushrods. The specs sheet on the twisted wedge heads from trick flow says you can be within.150 of the recommended 6.750, so i should be safe with what i've got. i'm seriously thinking of a head rebuild and some new springs.

joe4speed · 03-13-2002, 02:45 AM

Quote:

Originally posted by Thad
What does ttt mean?

ttt = to the top

Just so it moves to the top of the page so people don't forget about the thread. I wish I could help ya, dude, I know nothing about your heads! Good luck, and keep us posted!

Thad · 03-13-2002, 07:41 AM

Thanks Joe. I need some luck right now! It's sounding really bad.
Don't be a stranger and stop by this weekend. Jus giving you s**t!
Thanks for the replies people, i'm sure i'll be posting about this topic some more. You all are probably sick of hearing about this, sorry.
thad

03-09-2002, 10:52 PM	#1
Thad Registered Member Join Date: Oct 1999 Location: Stuart, FL US Posts: 192	Could it be a bad spring? I did some checks today along with replacing two roller rockers because they looked very beat up. But one had a strange wear pattern around the pushrod seat like the pushrod had been tapping around the seat. Is this sign of a bad spring? __________________ 90 LX 5.0 ,bored 302, MSD 6AL, Twisted Wedge TrickFlo HDs, World class T5, BBK fender cold air induct., 70mm TB,Edelbrock performer Intake, aluminum Drve shaft, 3.55 Gears, Long Tube Headers to Flowmasters.

03-11-2002, 07:25 AM	#2
Thad Registered Member Join Date: Oct 1999 Location: Stuart, FL US Posts: 192	any ideas? the rockers weren't out of adjustment. i can't think of what would cause this? bad lobe on the cam? __________________ 90 LX 5.0 ,bored 302, MSD 6AL, Twisted Wedge TrickFlo HDs, World class T5, BBK fender cold air induct., 70mm TB,Edelbrock performer Intake, aluminum Drve shaft, 3.55 Gears, Long Tube Headers to Flowmasters.

03-11-2002, 10:13 AM	#3
drudis Moderator Join Date: Dec 1999 Location: Livonia, MI, USA Posts: 1,194	Need more to go on... Why were you replacing the rockers? Too much play (valvelash) originally? Is the cam lobe wasted?... __________________ Darius Rudis, Moderator Corner Carvers Delight 1989 Mustang LX - Open Track Car http://www.dariusrudis.com

03-11-2002, 02:40 PM	#4
Thad Registered Member Join Date: Oct 1999 Location: Stuart, FL US Posts: 192	I replaced them because they had big chunks taken out like they were put through grinding wheel torture or something. they might have been ok dimensionally but didn't want to take the chance. See what's been happening is that i've been getting this loud tapping noise on the drivers side of the engine and can't figure out what it is. i've replaced the lifters and adjusted the rockers several times to try and eliminate it but nothing has worked. during the lifter replacement i noticed the damage on the two rockers. i just replaced the rockers this past weekend and noticed more damage on one of the rockers i replaced which is the wear around the pushrod seat. i adjusted the rockers 1/2 turn passed 0 lash. there's no wear on the pushrods and they're straight. rocker studs are nice and solid, none have backed out. pushrod guide plates are good, no un-allowable play. i took the car to a persons this morning and he suggested a bad valve guide, maybe a lazy or cracked spring and could also be a valve seat that has popped off and tapping around. I just don't know!! i'm thinking of just bitting the bullet and having the heads completely reworked. Oh and i've also replaced both header gaskets. i think i'm losing my mind!! __________________ 90 LX 5.0 ,bored 302, MSD 6AL, Twisted Wedge TrickFlo HDs, World class T5, BBK fender cold air induct., 70mm TB,Edelbrock performer Intake, aluminum Drve shaft, 3.55 Gears, Long Tube Headers to Flowmasters.

03-11-2002, 02:44 PM	#5
Thad Registered Member Join Date: Oct 1999 Location: Stuart, FL US Posts: 192	Forgot the cam question. i looked down the lifter holes with a flash light and turned the engine.Didn't see any wear on the lobes. __________________ 90 LX 5.0 ,bored 302, MSD 6AL, Twisted Wedge TrickFlo HDs, World class T5, BBK fender cold air induct., 70mm TB,Edelbrock performer Intake, aluminum Drve shaft, 3.55 Gears, Long Tube Headers to Flowmasters.

03-12-2002, 10:31 AM	#6
joe4speed He said Member...heh, heh Join Date: Sep 1999 Location: Jupiter, Florida U.S.A. Posts: 3,718	ttt __________________ *Joe!* 1988 GT, 13.58@101mph Check out my listing! Click here! Or my website:www.joe4speed.com

03-12-2002, 11:46 PM	#7
Thad Registered Member Join Date: Oct 1999 Location: Stuart, FL US Posts: 192	What does ttt mean? __________________ 90 LX 5.0 ,bored 302, MSD 6AL, Twisted Wedge TrickFlo HDs, World class T5, BBK fender cold air induct., 70mm TB,Edelbrock performer Intake, aluminum Drve shaft, 3.55 Gears, Long Tube Headers to Flowmasters.

03-12-2002, 11:59 PM	#8
Hozer 88GTConv Registered Member Join Date: Feb 2002 Location: Jacksonville, FL Posts: 706	do you have TF pushrods? Don't your heads require TF pushrods? They are a very special length. __________________ 1988 GT Convertible 331 10:1 TW heads, GT-40 intake, MSD, TRW flattops, B Cam w/ 1.7's, MAC exhaust, 24's, 70 TB, 76 MAF, 3.73's, Pro 5.0, Koni's, Anderson PMS, Wideband 02, yatta, yatta... One week with new motor, two speeding tickets...joy

03-13-2002, 12:22 AM	#9
Thad Registered Member Join Date: Oct 1999 Location: Stuart, FL US Posts: 192	I've got the TF 6.700 hardened pushrods. The specs sheet on the twisted wedge heads from trick flow says you can be within.150 of the recommended 6.750, so i should be safe with what i've got. i'm seriously thinking of a head rebuild and some new springs. __________________ 90 LX 5.0 ,bored 302, MSD 6AL, Twisted Wedge TrickFlo HDs, World class T5, BBK fender cold air induct., 70mm TB,Edelbrock performer Intake, aluminum Drve shaft, 3.55 Gears, Long Tube Headers to Flowmasters.

03-13-2002, 07:41 AM	#11
Thad Registered Member Join Date: Oct 1999 Location: Stuart, FL US Posts: 192	Thanks Joe. I need some luck right now! It's sounding really bad. Don't be a stranger and stop by this weekend. Jus giving you s**t! Thanks for the replies people, i'm sure i'll be posting about this topic some more. You all are probably sick of hearing about this, sorry. thad __________________ 90 LX 5.0 ,bored 302, MSD 6AL, Twisted Wedge TrickFlo HDs, World class T5, BBK fender cold air induct., 70mm TB,Edelbrock performer Intake, aluminum Drve shaft, 3.55 Gears, Long Tube Headers to Flowmasters.

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