Broken valve springs... Youch!!!

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Apr 29, 2015 | 08:07 PM

kunta0908

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From: Houston Texas

Broken valve springs... Youch!!!

2006 C6... MS4 cam. PAC .650's... Texas Speed setup, installed by a reputable shop here in Houston. 5000 miles on the setup. Never overreved the motor since I took possession a month ago...

Ouch.

Fingers crossed no bent valves. Replacing springs on Saturday, leakdown test following install.

Apr 29, 2015 | 08:59 PM

erick_e

Melting Slicks

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From: KY/TN

St. Jude Donor '13-'14-'15-'16

Wow. That's the first time I've seen PAC springs go bad, although I remember hearing about a bad batch several years ago.

Hopefully there is no serious damage.

Were they 12 or 15 series?

Apr 29, 2015 | 09:03 PM

JWell

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Joined: Oct 2010

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From: Houston TX

wow, that's scary

Apr 29, 2015 | 09:50 PM

Suds

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Joined: Jan 2014

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From: Lone Star State

Wow, now i see the top spring perch broke, that spring went solid for enough force to break that, damn. Unlees the failed spring made the spring taller and the impacted the top spring perch.

It looks like you have more than one failed spring.

Apr 29, 2015 | 10:03 PM

kunta0908

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From: Houston Texas

I counted 3... Leakdown will tell me if I bent a valve or not

Apr 29, 2015 | 11:01 PM

kunta0908

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Shop friend just informed me that the guy who previously did the work in fact installed tooley .650's. Apparently quite inferior to PACs

Apr 29, 2015 | 11:02 PM

kunta0908

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From: Houston Texas

*tooley 650's

Apr 29, 2015 | 11:03 PM

Arctic Vette

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Ouch

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Apr 29, 2015 | 11:27 PM

kunta0908

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From: Houston Texas

Is there any recourse through tooley? Or am I ****ed with this setup, even after only 5k miles

Apr 29, 2015 | 11:29 PM

#10

JP426

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From: Walla Walla WA

The seals and retainers are also damaged in those pictures. I think there is more to the story than bad valve springs. Brian Tooley springs have a good reputation from what I have heard.

Apr 29, 2015 | 11:37 PM

#11

kunta0908

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From: Houston Texas

A car that never hit 7k rpm. Tell me how these tooleys hit a 6900 wall and blow apart? It's not in question, its a definite fact

Apr 29, 2015 | 11:39 PM

#12

Jtaugner

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Quote:

Originally Posted by JP426

The seals and retainers are also damaged in those pictures. I think there is more to the story than bad valve springs. Brian Tooley springs have a good reputation from what I have heard.

x2

I'm running BTR's full setup in my heads. Every shop I've ever spoken to recommends them.

Magic Stick 4 is a very big cam.

Last edited by Jtaugner; Apr 29, 2015 at 11:46 PM.

Apr 29, 2015 | 11:40 PM

#13

JP426

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From: Walla Walla WA

I think they went into coil bind due to improper installation, just my opinion.

Apr 29, 2015 | 11:45 PM

#14

kunta0908

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From: Houston Texas

I'm open to suggestions. I have another set of .650's from tooley. And then I can go ahead and get the PAC .675's and swap out later. Just want to get the car running. Amd/ot check for a bent valve

Apr 29, 2015 | 11:46 PM

#15

chadyellowz

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From: Fl

Quote:

Originally Posted by JP426

The seals and retainers are also damaged in those pictures. I think there is more to the story than bad valve springs. Brian Tooley springs have a good reputation from what I have heard.

indeed valve seals first pic you can see the upper ring,

Last edited by chadyellowz; Apr 29, 2015 at 11:49 PM.

Apr 29, 2015 | 11:50 PM

#16

Jtaugner

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Quote:

Originally Posted by kunta0908

I'm open to suggestions. I have another set of .650's from tooley. And then I can go ahead and get the PAC .675's and swap out later. Just want to get the car running. Amd/ot check for a bent valve

The MS4 is .649".. I'd be putting in .675" than upgrading to .700" as a safety precaution. I'd never run a .650".