StevieZ

iTrader: (3)

Got a flashing SES (I was taking it very easy) Limped home and A-tapped the car. #5 cylinder was misfiring like crazy at anything above idle. At idle it was on par with the rest of the cylinders. Pulled the plug (see picture) I don't have a leak down tester but I did test the compression and it was down to 178-180psi from 200 psi. The car is making a funny tick that is not like a lifter and pretty well runs on 7 cylinders at anthing above idle. I'm going to pull the cover and look at the spring now but does this sound like a broken spring? What are the chances that the valve bent if I was keeping the car below 2K rpms for about 10 miles? PS: no smoking at the pipes.

StevieZ

iTrader: (3)

It's a freaking broken spring! This sucks!!! Only 1225 miles on them!!

gomer

iTrader: (13)

damn. That does suck. What kind of springs are they? Was it an intake or an exhaust?

StevieZ

iTrader: (3)

They're the same as yours Gomer!! Scarey huh? Comp 978 doubles. I'm going to pull the rocker and try and see if the valve is bent.

gomer

iTrader: (13)

Man... I feel for you. I just took my 5.3 heads off to install a set of the PP LS6 style and a TSP 231/237 cam and I went with 918's on them instead of the 978's.. I'm not a big fan of the heavy dual springs. Hope your valve isn't bent.

StevieZ

iTrader: (3)

#5 exhaust. If the valve is bent, it is not badly bent. It turns and moves up and down easily although I suspect it has to be bent a bit. I can't be sure either way until I pull the head. I'll probably finish out the season babying the car and then I'll pull them. It's a good thing I was driving like a grandfather when it happened! I am not a fan of Comp springs!

Scalpel

iTrader: (4)

What's the reason for the use of 978s instead of the 987s again?

v8maro

iTrader: (4)

Wow, sounds like the EXACT problem that I had with my car 2 weeks ago!!!!
and the EXACT SAME SPRINGS (comp 978's from PP), AFTER 3K MILES!!!! mine broke in 3 pieces...

Read these:
https://ls1tech.com/threads/showflat...art=1&vc=1

https://ls1tech.com/threads/showflat...art=1&vc=1

https://ls1tech.com/threads/showflat...rue#Post738797

I'm starting to wounder if there are some QC issues going on here....


Also, what heads were u using, were the rockers hitting the retainers??? If not, then i am starting to beleive that the extra stress from the rockers hitting the ret wrong was not the problem to begin with. I do not want to be doing spring changes every 3k miles or less....

-Steve

StevieZ

iTrader: (3)

My heads are the same as yours. I didn't have issues with the retainers hitting since I'm using the Yella Terra rockers. Did you pull your heads? Did you bend the valve?

v8maro

iTrader: (4)

If these springs are **** and die after 1k->3k miles, I am going to be XXX FUMING. If I have to pay 1 more cent for this XXXX.....ARGH!H!H!H!HH!H!HH!
*&*&amp*Q$&*&^#Q$#$Q*#Q$_%#Q&$#_ ($^Q

No, did not pull heads... did a leakdown and it came up perfect
no, valves were not bent.

-Steve

Ramair346

Sounds like deja vu of 918's.

TVWilkes

StevieZ,
You package is on the way.

Because of the problems with the large springs,I am no longer going to offer them.I am now using the NEW CRANE DUALS.

StevieZ

iTrader: (3)

Thanks Terry . Please don't forget to email me the tracking #. Guys I should mention that Terry is overnighting me a few spares and also promised to set me up with a better set of springs gratis when he gets them. Thanks Terry!

Ramair346

I haven't purchased anything from Patriot, but just seeing how well they seem to take care of their customers when there is a component failure (which is beyond their control), has impressed the hell outta me.
I know what a pain in the *** v8maro can be to deal with and Terry made him happy.
Patriot Performance

Scalpel

iTrader: (4)

Why not use the CC 987s? Those are great springs. No problems there.

WicketMike

iTrader: (13)

the new LS6 heads will come with the NEW CRANE DUALS?


thanks

gomer

iTrader: (13)

I was talking to Terry earlier today and he told me he was expecting the first shipment of 500 crane duals in very soon, I'm pretty sure that will be the standard spring on both the LS6 style and the 5.3's after the trouble with the comps.. if I had to guess..

robertbartsch

Comp springs have proven themselves to be un-reliable,,,,they have NO quality control in place.....

Do not buy these; they are junk!

Fireball

iTrader: (21)

so robert...what is your spring of choice...

I've personally broken Crane...

I've seen numerous REV failures...

niphilli

Add Isky springs to the list of failures above (Joe posted a while back about this).