Engine Valvetrain help please!!

sams93gt

Active Member
Mar 14, 2018
148
27
38
34
So a fast run down, after over 2 and a half years I'm finally finishing my 93 gt 5.0, the motor was built by a friend of my dads in Maine, it's a 306 balanced and blue printed, b303 cam, gt40p heads with the trickflow upgraded springs with factory stamped rocker arms and hardware, trickflow r upper and lower, 30lb injectors, 75mm pro m match maf, 75mm tb, egr delete, frpp long tube headers, almost everything in and on the motor is brand new. After I dropped it in and got it fired up there was a loud ticking coming from #4 cylinder, the lifters were all brand new and soaked in oil for almost a year prior to build and I did prime the motor before start up. Alas I the exhaust valve lifter collapsed, me and a friend replaced that lifter and the tick went away for roughly a minute. I took the valve cover back off and pulled the spark plug, I got the cylinder #4 to tdc on compression stroke and I noticed the exhaust valve is open just a bit, I removed the rocker arms and noticed I can (with a little force) spin the exhaust valve spring, my question is, the springs have 200miles on them is it possible that the spring is weakened and can cause the loud ticking noise at idle and under power?. The car has roughly 49-51psi of oil pressure on start up and roughly 40psi when warmed up. The top of the new piston is burnt more than the other pistons. Please any help would be amazing, I just want to drive her lol. My name on Instagram is 5point_oh_yea if anyone wants to see the build. Thanks in advance. Heres a video of the ticking

 
  • Sponsors(?)


7991LXnSHO

Now I want a 10 year badge
Sep 1, 2010
2,759
472
124
Kearney, NE
Dude, I think we can help. You write longer sentences than me, and that’s an achievement. After I digest for intended paragraphs, I’ll see what the valve, spring, or other issue might be and maybe ask for other info.
 

sams93gt

Active Member
Mar 14, 2018
148
27
38
34
Dude, I think we can help. You write longer sentences than me, and that’s an achievement. After I digest for intended paragraphs, I’ll see what the valve, spring, or other issue might be and maybe ask for other info.
Lol thanks, punctuation and sentence structure isnt my strong suit
 

7991LXnSHO

Now I want a 10 year badge
Sep 1, 2010
2,759
472
124
Kearney, NE
So something is wrong with the valve train setup for that valve.
The unlikelihood of the spring being out of specs, or the wrong spring totally, must be checked. Height and compression force are the two big factors. I think this is where you need to start.
I do not think you had a collapsed lifter. Soaking that long is not needed, and can lead to them being over pumped when started, not collapsing. Getting the outside lubed up and a prime should be good for roller lifters. A loose valve will make plenty of noise.
Did you check pushrod lengths in the build?
The other options that relate to the weak valve action are probably a longer valve or a wrong retainer.
 
  • Like
Reactions: sams93gt

sams93gt

Active Member
Mar 14, 2018
148
27
38
34
So something is wrong with the valve train setup for that valve.
The unlikelihood of the spring being out of specs, or the wrong spring totally, must be checked. Height and compression force are the two big factors. I think this is where you need to start.
I do not think you had a collapsed lifter. Soaking that long is not needed, and can lead to them being over pumped when started, not collapsing. Getting the outside lubed up and a prime should be good for roller lifters. A loose valve will make plenty of noise.
Did you check pushrod lengths in the build?
The other options that relate to the weak valve action are probably a longer valve or a wrong retainer.
The motor was assembled by someone in Maine, he said the numbers were good, the factory pushrods are good for the b cam, the springs are new upgraded trickflow springs, is it possible maybe a valve seat or something came loose or is out of whack? Or maybe when they reassembled the heads they possibly switched the valve springs?
 

7991LXnSHO

Now I want a 10 year badge
Sep 1, 2010
2,759
472
124
Kearney, NE
The spring specs and installed spring height are where to check first. A lot of things are possible, but less likely.
A dropped exhaust seat is more likely to happen on an aluminum head, and Loud noises and destruction occur quickly. It is not a collapsed lifter like sound.
 

sams93gt

Active Member
Mar 14, 2018
148
27
38
34
The spring specs and installed spring height are where to check first. A lot of things are possible, but less likely.
A dropped exhaust seat is more likely to happen on an aluminum head, and Loud noises and destruction occur quickly. It is not a collapsed lifter like sound.
Ok cool, should I just look up installed spring height? If the height is off for just this cylinder what could that be, I appreciate the help.
 

7991LXnSHO

Now I want a 10 year badge
Sep 1, 2010
2,759
472
124
Kearney, NE


There is also comparing a good one to the questionable one to see if they put a weaker, shorter or just the wrong spring in.
 
Last edited:
  • Like
Reactions: sams93gt

sams93gt

Active Member
Mar 14, 2018
148
27
38
34


There is also comparing a good one to the questionable one to see if they put a weaker, shorter or just wrong spring in.
I'm not gonna sit here and lie to you, after reading through those 2 articles, if the valves/springs are the issue with my valve train, I'll prob end up bringing it to a friend's shop, that's a bit out of my wheel house, lol. I appreciate the help, I really do. I wish this didnt even happen, the motor has like 3miles on it after the build. Theres a few things I cant or wont attempt to do.
 

sams93gt

Active Member
Mar 14, 2018
148
27
38
34
So I got it back, turns out when I swapped out the lifter I thought was bad was not, I swapped the exhaust valve lifter , the intake lifter was bad. Now shes all done. Thanks for all the help guys

 

sams93gt

Active Member
Mar 14, 2018
148
27
38
34
now i wanna find an aftermarket steering wheel cheap any leads would be appreciated !
 
Thread starter Similar threads Forum Replies Date
J Engine Need Help With Valve Train Fox 5.0 Mustang Tech 3
tmac3439 Help! Gt40p Valvetrain Chatter Fox 5.0 Mustang Tech 9
G Post-cam job Valvetrain noise....help SN95 4.6L Mustang Tech 16
redstang50 need help with valvetrain Fox 5.0 Mustang Tech 1
9 Help! Valvetrain issues... Fox 5.0 Mustang Tech 2
stevesLX valvetrain noise/ need help Fox 5.0 Mustang Tech 1
9 windsor jr or sr head users, need help with valvetrain 1994 - 1995 Specific Tech 0
MustangGlx valvetrain help! Classic Mustang Specific Tech 2
N Valvetrain Problems, Need Major Help! Fox 5.0 Mustang Tech 1
T 302 stepchild needing some valvetrain guidance 1974 - 1978 Mustang II Talk & Tech 2
ZephyrEFI Engine Setting Up Your Valvetrain GT40P 302 Fox 5.0 Mustang Tech 2
MoDriver SOLD 1964 Ford 260 C4OE Head, Mustang, Comet, Mercury Engine and Power Adder 1
MoDriver SOLD 5.0/302 Roller Lifter Valvetrain/Cam Components Engine and Power Adder Parts 0
PakstinN Bent 302 Cam?? Fox 5.0 Mustang Tech 2
skiwesser11 Noisy Valvetrain Concerns Fox 5.0 Mustang Tech 11
fiveohlover Valvetrain Geometry Facts Or A Bunch Of Bull Crap? Fox 5.0 Mustang Tech 7
GrandeStang73 Noisy valvetrain... Classic Mustang Specific Tech 34
Cobra4B Lifter, piston slap, bottom end, general aggressive valvetrain, other? Fox 5.0 Mustang Tech 3
O Valvetrain Problems Fox 5.0 Mustang Tech 20
R 5.0L Valvetrain Questions Fox 5.0 Mustang Tech 8
8 valvetrain ?'s Fox 5.0 Mustang Tech 4
RIO5.0 Valvetrain/pushrod set-up 1994 - 1995 Specific Tech 5
bgdowski 1.7 RR on stock valvetrain?! Fox 5.0 Mustang Tech 2
Decurion GT40 valvetrain question Classic Mustang Specific Tech 13
X Noisy Valvetrain after H/C/I install and I thought I did everything right 1994 - 1995 Specific Tech 31
D Where to buy valvetrain hardware? Fox 5.0 Mustang Tech 2
flyby84 Valvetrain question?? Fox 5.0 Mustang Tech 0
Winfaulker Valvetrain or something else... this new car hates me Fox 5.0 Mustang Tech 2
R Valvetrain adjustment ?????'s Fox 5.0 Mustang Tech 3
mustang50v8 valvetrain noise? SN95 4.6L Mustang Tech 1
KrazZ27 valvetrain problems 1994 - 1995 Specific Tech 1
dbfarr 96 explorer engine cam and valvetrain suggestions Fox 5.0 Mustang Tech 7
M 65 289 A-code (Cam and Valvetrain) Questions Classic Mustang Specific Tech 20
d98gt Pi Cam Install Problems--Valvetrain Clatter SN95 4.6L Mustang Tech 18
Saphirestang89 Valvetrain question. Fox 5.0 Mustang Tech 6
SadbutTrue Need advice for properly setting up valvetrain Classic Mustang Specific Tech 7
Foxfan88 normal/common to readjust valvetrain after running the engine Fox 5.0 Mustang Tech 1
BK_CAULEY valvetrain loose? what could it be... Fox 5.0 Mustang Tech 38
jeffnoel Valvetrain noise or detonation? Fox 5.0 Mustang Tech 4
F Valvetrain noise Fox 5.0 Mustang Tech 1
HiFlow5 0 Valvetrain/rocker ticking. Fox 5.0 Mustang Tech 2
F Valvetrain How To 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 1
stevesLX valvetrain troubles Fox 5.0 Mustang Tech 5
cliff88145 TW heads and valvetrain Fox 5.0 Mustang Tech 6
stevesLX lifters valvetrain Fox 5.0 Mustang Tech 10
90_Red_LX Setting up valvetrain questions Fox 5.0 Mustang Tech 3
J valvetrain-E7's Fox 5.0 Mustang Tech 2
Z Solid lifter valvetrain question? Fox 5.0 Mustang Tech 0
M Questions on camshafts and valvetrain Fox 5.0 Mustang Tech 4
Red88 RICK Valvetrain Fox 5.0 Mustang Tech 4
Similar threads