After 5 days of letting the car sit in the garage, I got all the parts and tools I needed to fix the spring.
It was a little bit of a pain, and took nearly an hour just to change the one spring and put it all back together. The locks were stuck in the retainer, so every time I used the spring compressor tool the valve and everything would go down. At first I thought the air compressor wasn't strong enough. I grabbed the rubber mallet and hit it a couple times and it finally loosened. The spring was in three pieces when I took it out.
Slapped the new spring on, put it all back together, and checked the pressure, and it was good. Put the plug in let the car warm up, and shut her down. Cleaned up, started the car back up, and went for a ride.
Everything seems to be fine, and thankfully I didn't bend the valve.

Hopefully I won't have to do this again, but if I have to I can.

Thanks jmX for answering questions, Mike Norris (Norris Motorsports) for answering questions, and LGM for sending me a replacement spring so fast.

Ben

 

Nice fix! What was the brand name and number of the spring that broke, and under what circumstances?

 

Rev 7716 Dual springs, the shiny ones. No circumstances really, my car was in the garage for 3 days during "Isabel" and when I finally got home Friday night, I took the car for a ride, got gas, was heading home saw an 03 Cobra and an SS and revved at them to about 5000rpm. After that the car wouldn't go above 3000 rpm w/o breaking up.

It was the 2nd to last spring on the drivers side.

 

Ben, look like you got G5X-2 cam package.
How many miles have you had it?
I also got the same package and I actuall don't wanna hear broken valve springs on G5X-2 cam package :cry
Thanks in advance
:cheers:



[Modified by mike76002, 1:40 PM 9/25/2003]

 

I only had about 3000 miles on the car since the install.

 

:mad :cheers: :smash:

 

What the heck? :mad
Are you really driving hard on that car?

 

Rev springs are a joke guys............much better choices out there. Louis's old Z28 with the G5X is in a local shop here in Lubbock with a broken Rev.

 

I get on it every now and then, but I have never taken it to the track and 75% of those 3000 miles were highway.

 

Glad you got all fixed up Ben.

I helped install a G5X2 here in town and within 1000 miles that car broke a valve spring too. I guess the rev's have bad Q/C.

 

What alternative springs are available that are better/more reliable? I've got the G5X2 and don't want to be breaking springs! :lol:

 

I want to know this as well... :yesnod:

VR :cheers:

 

My last break was second to last on passenger side, same situation as you no apparent damage--comp 918 pos, using crane's new dual springs that come with their own seating cup so hopefully won't have to worry about that in future.

 

Now we need LG steps in to suggest better springs for their cam.

 

Hi GUys,

This seems to be a bad batch of springs that got into the system. We went for a very long time without any spring issues. I have 11000 miles on my rev springs. It seems that if you make it past 3000 miles, you will make it forever.

The reason that we like the rev springs (for now) is the fact that it is a true dual spring where the inner spring will hold the valve up and not damage it.

Remember the Comp 918 springs that had a problem. They had a bad batch, but when a single spring breaks, the valve hits the piston.

At any rate, we are exploring other options at this time. We can use an Isky spring which is a very good spring but it is a single spring with only a dampener. We are also waiting for Comp to release their new double spring set for the LS1 which will allow up to .650 lift and requires no machine work.

The down side to the comp spring is cost. They list for $795 per set with retainers, spring seats and seals. I have some on order, so as soon as they release them, then we will start using them.

Sven, you have Ferrera springs in your head, which required machining to fit. You should be ok.

Any of our in house heads get machined to accept Comp 977 springs so they are also no problem.

For any of our Cam package customers that do not want to use the rev valve springs, just give me a call, and I will swap you for a set of Isky springs and retainers at no charge. The isky springs cost $100 more than the revs but I will do an even swap. And if you want the new Comp springs, I will give any of you FULL credit for your old Rev springs toward the price of the Comp springs.

Until then, the Rev springs seem to be a hit or miss deal only recently. they are either good or bad. You may just get one spring that messes up, then go 11,000 miles like mine.

If you have one of our early complete head packages there is only a 50/50 chance that you have rev springs.

Again, for comfort sake, we will swap your Rev springs for Isky's at no charge if you want to, or wait for the new Comp dual springs, and I will give you full credit for your Revs.

We don't make the springs, but we want our customers to know the choices and offer them the option to switch. We have sold 140 sets of Rev springs, with only a few problems recently so it was probably just QC problem with them. I think the first rule is "if it isn't broke, don't fix it" but if you do have an issue, then we should act accordingly.

Hope this helps, and please let me know personally at Lou@LGMotorsports.com if you have any questions or concerns and we will work them out.

Thanks
Lou G
Thanks
Lou Gigliotti


[Modified by LG Motorsports, 10:20 AM 9/26/2003]

 

Thanks for chimming in Lou :thumbs:

I recall you saying that out of over 1600 springs installed with the G5X2, only 8-9 springs have failed.

 

I just got the Manley single springs from MTI for my Stealth cam. Was wondering what the
durability of the Manley's is like? The cam is a .580 lift so it is a bit up there lift wise. Duration
is shorter though at 220 so it doesn't spank the valves open as fast as the G5X2 does but hopefully
my springs will last.

 

Way to step in and take care of things Lou. :cheers:
I have the REV 7716's that came with my G5X2 package and they are fine after about 1000 miles.

Brief History after a complete H/C Installation:
Immediately after installation they were heat cycled 4 times.
The next evening I went for a long 120 miles cruise at varying speeds to break everything in.
On day 3, I pulled 9 runs on the dyno to 6500+ without a hitch.
No broken springs for me...

I'm not sure about anyone else, but I always let my car warm up before driving it, (oil temp 145*+). It might be a bit ****, but having all of the internals warm before hitting the road makes me feel better.


[Modified by MTWallet, 8:20 AM 9/27/2003]

 

I think they are awesome.....for all those that have had broken springs....what is the coil bind of the spring, what height did you have it set at, and was the lift that you were running at least .070 away from coil bind? If you don't know what any of these questions mean or their answers then I know why those springs broke.

 

You will be fine with your sprngs if they are installed at the corrcet heights.

I don't know your springs or the lift of your cam but if you are at 1.150 at coil bind and your cam is .605 lift: with a .070 safety margin before coil bind, you need 1.150+.070+.605=1.825 installed height. It is not an issue of just buying springs and putting them in. You can adjust height in different ways. You can use diff valves, different keepers:+.050, or use retainers that have different offsets. You will break any spring with that lift if the heights are wrong.

Comp cams and REVs are excellent if installed correctly.