Noise after cam install (video)
04-10-2011, 05:09 PM
#1
Teching In
Thread Starter
iTrader: (2)
Join Date: Mar 2010
Location: Bel Air, MD
Posts: 27
Likes: 0
Received 0 Likes
on
0 Posts
Noise after cam install (video) Just finished up installed 226/234 on a 113 from EPS. Trick flow pushrods and dual springs. Thought Id post before i look into it. When I first started the car i had just a faint ticking sound, and once it was fully warmed up and after a drive around block (staying under 2k.) now it sounds like a Very loud sewing maching... Used loctitie on the rockers and rechecked the torque after a few revolutions. any ideas?
http://www.youtube.com/watch?v=WUNgoNBNNUk
http://www.youtube.com/watch?v=WUNgoNBNNUk
04-10-2011, 05:22 PM
#2
10 Second Club
iTrader: (19)
Join Date: Sep 2010
Location: Carbondale, PA
Posts: 250
Likes: 0
Received 0 Likes
on
0 Posts
Sounds like theres a rocker issue there. I know roller rockers add some sewig machine like sounds to an engine, but I can hear that noise over everything else.
04-10-2011, 06:06 PM
#5
Sounds like an old hydraulic cammed car with loose rockers. I'd say you need longer pushrods. Or at least measure what you have and get a length checker to see what you need. Sounds like all of them are loose. That means no preload on the lifters. Should be corrected soon.
04-10-2011, 06:19 PM
#6
Teching In
Thread Starter
iTrader: (2)
Join Date: Mar 2010
Location: Bel Air, MD
Posts: 27
Likes: 0
Received 0 Likes
on
0 Posts
Just did cam springs and retainers. I looked at the pushrods before installing but after reading some posts I forget what size. I guess ill pull the covers off at work tomo night if there's not too much work coming thru. Oil pressure is fine and it only did it after it fully warmed up. I've had a light ticking sound before the swap but it seemed like normal ls tick
Trending Topics
04-11-2011, 05:03 PM
#11
Often, the oil pump o-ring gets pinched or cut when reinstalling the pickup tube and your oil pressure will be lower than it should resulting in louder clatter as the oil gets warm and oil pressure drops further. See it all the time.
__________________
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
04-11-2011, 05:26 PM
#12
i put in a new oring yesterday, same issue, it was the green oring and very tight to fit.
04-12-2011, 06:39 AM
#15
just took a straight edge to my valves and notices the intakes are longer than the exhaust valve, darn thing never had noise before so i dont see how the valve length cause it all the sudden. any ideas.
