Gabbiani

iTrader: (20)

You would think there are enough examples out there that people would stop cheaping out over $100-150.

Cruising home in the V. Cruise set and about 2000rpms. Hadn't beat on it at all that day. Check engine light starts flashing like crazy. Car starts to shimmy. Look down and still have oil pressure. Car dies. Coast off to the side of the road. Grabbed my laptop and had a missfire code.Try to restart and it fires but sounds like crap. Tow it home and knew the problem before I ever popped the hood.

I may have lucked out. The spring broke in one spot and all of it stayed on the valve. The valve is still straight. Took the spring off, ran the piston to tdc, and I can spin the valve on the piston without any rough spots. Hopefully no other damage. I'll check compression once I have a spring back on it.

Texas speed got springs out the door last minute for me last night. Hope to see them today. They said the pac518 was plenty but I'm going dual spring just to be sure. Room to grow too if I go with a bigger cam later.

I have a set of 918s on my lt1 motor that hasn't been started yet. They will be coming off most likely too.

Cam is a 228/234 .59x/.59x if anyone is curious. Not very big.

3rdCoastPowerSports

iTrader: (5)

were they the old 918's or the blue striped ones?

Gabbiani

iTrader: (20)

They were purchased late last year. I remember paint. Maybe blue. I was kind of furious last night. I've got the spring on the bench at home. I'll check this weekend.

CranMaro99

iTrader: (10)

Yeah, this is why I didn't go with those springs last year when I did the cam swap. I don't care if they're the new design or not, those springs have been tainted and so has their name, unfortunately.

PREDATOR-Z

How did you install them? Did you check height?

Gabbiani

iTrader: (20)

Height was spot on. Had plenty of room to coil bind.

disc0monkey

iTrader: (10)

i think these beehives are super tempermental. if they pop out halfway out of a crappy valvespring compressor or you scratch them in the process you have a very good chance they will break.

funny most people that now run duals have broken springs before... just my .02

3rdCoastPowerSports

iTrader: (5)

i have broken a dual spring before, FWIW

poltergeist 02

iTrader: (65)

there are many stories of broken duals as well. what type of lobe are you running?

brokenfly

I've broken the blue striped 918's, they sent new ones,traded them for arp headbolts,bought some 1518's,snapped those, called pac, gave them the batch number, yep, you guessed it, recalled batch...
Received the replacement springs, all good for the last 20000 miles...

Whiteaw57

iTrader: (2)

I wouldn't go to vegas if I were you

PREDATOR-Z

IME over 90% of the breakages happen because of poor install/and or maintenance. I've used various singles on various lobes and yet to break one. Proper install protocol is imperative for long service.

badazz81z28

iTrader: (6)

I agree, Also sometimes stuff breaks no matter what. I wouldnt trash a spring type or a company for one failure.

1lejohn

iTrader: (9)

I've used GM , Manley and PAC's never had any problems. Comps seem to be hit or miss

NVR_SPDS

iTrader: (39)

Ive had 2 918 failures, on different cars/different engines, but strangly enough, same valve on both. Both lost the number 8 intake valve. Neither were installed by me. One, I take the blame for. I knew they had some miles on em, but threw a 224R at em anyway. The second set (4 months later) failed, and I checked the spring pressures on the other good springs, and they were within 5#s of what they should have been.