FML Possible broken PRC valve spring - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Bildo · 07-24-2015, 06:57 AM

So back in February I had a brand new set of PRC 255 heads with the .675 valve springs put on the car. I hadn't driven my camaro in about 2 weeks so I started it up yesterday hearing what I thought was an exhaust rattle, I jacked up my car as high as I could to get under it (not very high) and I could not tell where the origin of the noise was coming from. I ended up taking it to a shop down the street where they let me use their lift. Followed the noise up the drivers side exhaust, couldn't hear much from the top side but I am suspecting its one of the springs on the dual setup. Not even 4 thousand miles on a not so cheap set of heads...... Pulled the valve cover on the drivers side to inspect but its pretty hard to see the inner springs when they are installed. Will be pulling the valve springs on that side this weekend to see if I can find the culprit..... just really disappointing. Very possible end to my summer season as all my car funds are tied up in my ERL short block. I do have another set of the .675 EHT springs installed on my factory heads but if this one failed with 4k miles on it I will not be putting any more of their springs on my cars..... on a good note at least all the valves are still in their retainers and not dropped into the cylinder.

MightymouseSS · 07-24-2015, 08:43 AM

I broke a BTR .660 not to long ago. It never made any weird noises or gave me idling issues only reason i found out was cuz i removed the valve covers to inspect the valve seals cuz my car was consuming oil. I broke the outter spring so it was visible right away. Otherwise your gonna have to remove the springs to see the inner spring. Good luck man since i cammed my car is been nothing but issues.

Unreal · 07-24-2015, 08:48 AM

Call TSP, they will probably warranty them out no issue. Shouldn't be a big deal.

Synner · 07-24-2015, 10:17 AM

What cam are you running that you think you need .675 springs?

AITI · 07-24-2015, 10:55 AM

If a dual spring (sounds like what you have) then odds are you did not sustain damage. Make sure with new springs you ALWAYS heat cycle them before running higher RPM's. 2 cycles of getting to operating temp and letting cool down completely should prevent most springs from breaking.

Bildo · 07-24-2015, 12:11 PM

The .675s came with the heads, running a TSP 231/236..... and is what I upgraded to as well on my factory heads when I installed the cam

Lonnie@Texas-Speed · 07-24-2015, 01:15 PM

Our spring kits come with a 1 year part replacement warranty. If it is a broken spring give us a call. AITI is on point about the heat cycling.

AITI · 07-24-2015, 03:11 PM

TSP always gives good customer service. Had no doubt they would cover it.

Bildo · 07-24-2015, 03:31 PM

Quote:

Originally Posted by Lonnie@Texas-Speed

Our spring kits come with a 1 year part replacement warranty. If it is a broken spring give us a call. AITI is on point about the heat cycling.

Thanks good to know. I will be pulling it apart on Sunday.

christianchevell · 07-24-2015, 05:17 PM

Be sure and let us know.... I had a spring break prc .675 but was no doubt most likely from a over rev many months before, and it started with a very slight tick like exhaust the when the second one went......... well that ate my wallet. Had the 235/239 tsp cam. It happened to make it have idle problems and it was oh crap within ten miles... Tink....

sbc88 · 08-01-2015, 11:17 PM

I also had a set about a year old only 3k miles on them and I started consuming oil so I called them and they sent me new valve seals. When I removed the valve covers I had a outer spring broke on cyl 7 and cyl 2 but I had no running issue except the oil consumption that would clear up after running for 10 mins.they sent me all new springs and I would have to say they were great about taking care of the issue,I was just glad I had the inner springs lol

christianchevell · 08-02-2015, 08:21 AM

wow.......... so a few thousand miles and....... no wonder Dominick there at TSP said they break a lot more than the only two sets of .650 springs he has seen over the years and he sells them 20 times more.......... Makes you wonder...... especially when you just replaced a motor destroyed by a .675 springs break and TSP would not even offer a discount for crap...... Wonder where those .675 springs are made......

Bodywerks · 08-02-2015, 09:12 AM

You yourself admitted that you over revved your engine! And if the springs were over a year old, well there you go.
Not everyone can use the .650 springs. I know I can't. I asked Pat G if I should consider the btr660's and he told me to go with the .675's.

Fast6.3 · 08-02-2015, 09:45 AM

you could always go with PAC springs Manley Crower Lunati they are all quality springs

07-24-2015, 06:57 AM	#1
Bildo Drives: 2012 2SS/RS LS3 Join Date: Dec 2011 Location: Omaha, Nebraska Posts: 1,677	FML Possible broken PRC valve spring So back in February I had a brand new set of PRC 255 heads with the .675 valve springs put on the car. I hadn't driven my camaro in about 2 weeks so I started it up yesterday hearing what I thought was an exhaust rattle, I jacked up my car as high as I could to get under it (not very high) and I could not tell where the origin of the noise was coming from. I ended up taking it to a shop down the street where they let me use their lift. Followed the noise up the drivers side exhaust, couldn't hear much from the top side but I am suspecting its one of the springs on the dual setup. Not even 4 thousand miles on a not so cheap set of heads...... Pulled the valve cover on the drivers side to inspect but its pretty hard to see the inner springs when they are installed. Will be pulling the valve springs on that side this weekend to see if I can find the culprit..... just really disappointing. Very possible end to my summer season as all my car funds are tied up in my ERL short block. I do have another set of the .675 EHT springs installed on my factory heads but if this one failed with 4k miles on it I will not be putting any more of their springs on my cars..... on a good note at least all the valves are still in their retainers and not dropped into the cylinder.

07-24-2015, 08:43 AM	#2
MightymouseSS Drives: 2011 LS3 Join Date: Jan 2012 Location: el paso tx Posts: 547	I broke a BTR .660 not to long ago. It never made any weird noises or gave me idling issues only reason i found out was cuz i removed the valve covers to inspect the valve seals cuz my car was consuming oil. I broke the outter spring so it was visible right away. Otherwise your gonna have to remove the springs to see the inner spring. Good luck man since i cammed my car is been nothing but issues. __________________ Vararam Stainless Works Headers Vmax TB SLP loudmouth 2 Nightfury Cam Mike Norris CC Tuned by Southwest Speed

07-24-2015, 08:48 AM	#3
Unreal Drives: 2006 Z06 Join Date: Oct 2010 Location: Gilbert, AZ Posts: 5,712	Call TSP, they will probably warranty them out no issue. Shouldn't be a big deal. __________________ Nick Corvette Z06 -1200ish rwhp

07-24-2015, 05:17 PM	#10
christianchevell old school chevy rodder Drives: 2013 2SS/RS Manual,DM exhaust,CRT Join Date: Jul 2012 Location: Oregon Posts: 5,587 View My Garage	Be sure and let us know.... I had a spring break prc .675 but was no doubt most likely from a over rev many months before, and it started with a very slight tick like exhaust the when the second one went......... well that ate my wallet. Had the 235/239 tsp cam. It happened to make it have idle problems and it was oh crap within ten miles... Tink.... __________________ 2021 Wild Cherry ZL1 A10, Sunroof, Data, Carbon, Nav, RotoFab Dry CAI, Elite x2, Borla ATK, Driveshaft shop

08-01-2015, 11:17 PM	#11
sbc88 Drives: 2011 camaro 2ss convertible Join Date: Jan 2014 Location: crystal lake-huntley Posts: 51	I also had a set about a year old only 3k miles on them and I started consuming oil so I called them and they sent me new valve seals. When I removed the valve covers I had a outer spring broke on cyl 7 and cyl 2 but I had no running issue except the oil consumption that would clear up after running for 10 mins.they sent me all new springs and I would have to say they were great about taking care of the issue,I was just glad I had the inner springs lol __________________ Tuned by:Ryan / gpi ,intake mod by Ryan / gpi ,slp udp Vararam cai,vmax ptb,h/c ,kooks 2"headers /hf cats,kooks 3" exh,Dss d/s ,Gforce 1000hp axles,d/s loop,true trac, 3.91 gears,toe rods,trailing rods,end links,sway bars,full bmr bushings,circle d 6c converter,line lock,race star rims,mt Pbr tires , New best 10.89 best 60 1.43 125.31

07-24-2015, 10:17 AM	#4
Synner Drives: cars Join Date: May 2011 Location: Oversneeze Posts: 4,544	What cam are you running that you think you need .675 springs?

07-24-2015, 10:55 AM	#5
AITI Account Suspended Drives: 2015 LFX Auto Join Date: Apr 2015 Location: US of A Posts: 280	If a dual spring (sounds like what you have) then odds are you did not sustain damage. Make sure with new springs you ALWAYS heat cycle them before running higher RPM's. 2 cycles of getting to operating temp and letting cool down completely should prevent most springs from breaking.

07-24-2015, 12:11 PM	#6
Bildo Drives: 2012 2SS/RS LS3 Join Date: Dec 2011 Location: Omaha, Nebraska Posts: 1,677	The .675s came with the heads, running a TSP 231/236..... and is what I upgraded to as well on my factory heads when I installed the cam

07-24-2015, 01:15 PM	#7
Lonnie@Texas-Speed Drives: 2010 Camaro - BIW Join Date: Mar 2010 Location: TEXAS! Posts: 198	Our spring kits come with a 1 year part replacement warranty. If it is a broken spring give us a call. AITI is on point about the heat cycling.

07-24-2015, 03:11 PM	#8
AITI Account Suspended Drives: 2015 LFX Auto Join Date: Apr 2015 Location: US of A Posts: 280	TSP always gives good customer service. Had no doubt they would cover it.

08-02-2015, 08:21 AM	#12
christianchevell old school chevy rodder Drives: 2013 2SS/RS Manual,DM exhaust,CRT Join Date: Jul 2012 Location: Oregon Posts: 5,587 View My Garage	wow.......... so a few thousand miles and....... no wonder Dominick there at TSP said they break a lot more than the only two sets of .650 springs he has seen over the years and he sells them 20 times more.......... Makes you wonder...... especially when you just replaced a motor destroyed by a .675 springs break and TSP would not even offer a discount for crap...... Wonder where those .675 springs are made...... __________________ 2021 Wild Cherry ZL1 A10, Sunroof, Data, Carbon, Nav, RotoFab Dry CAI, Elite x2, Borla ATK, Driveshaft shop

08-02-2015, 09:12 AM	#13
Bodywerks Drives: 2015 2SS/RS/1LE Join Date: Feb 2015 Location: Tucson Posts: 866	You yourself admitted that you over revved your engine! And if the springs were over a year old, well there you go. Not everyone can use the .650 springs. I know I can't. I asked Pat G if I should consider the btr660's and he told me to go with the .675's. __________________ 2015 SS/RS/1LE HSA delete, VMAX throttle body, CAI inc. Intake, PRC255 heads, BTR 660 springs, BTR cryo-treated rockers, PAT G 232/240 .654/.626 110+2, johnson 2110's, Manton 502 pushrods, C5R, Melling high volume/high pressure, Powerbond 25% underdrive pulley, Proform covers, Kooks stepped headers, catless mids, Doug Thorley exhaust. 512rwhp, 446rwtq on a mustang dyno, tuned by Cunningham motorsports.

08-02-2015, 09:45 AM	#14
Fast6.3 Drives: 2016 2SS coupe 2015 3LT Stingray Join Date: Aug 2012 Location: El paso texas Posts: 880 View My Garage	you could always go with PAC springs Manley Crower Lunati they are all quality springs __________________ Ported intake manifold and throttle body kooks 2" headers no cats