robertbartsch

Drive to the nearest bridge. Stop your car, get out. Toss both sets of 918s into the drink. Get back in the car.

Drive off and never look back!

The Alchemist

iTrader: (19)

Hmmm, I'm running 918's with the blue stripe from when they had the first round of problems and the blue stripe ones were the 'new' version. I'm guessing they are circa 2003'ish. I know I still have the box somewhere... but for the cost of a new set of springs, and the hassle to remove them, who knows. Knock on wood, they've been good and I've only put about 8-10k miles on them in the past 4 years.

JS

iTrader: (4)

Bri those are fine,It was around 2006 when they had issues...

Yeahdoug

No need to knock on wood. Like JS said, Yours are fine.

3rdgentug

iTrader: (23)

the new 918's were a different part number they are now calling the 918's
they are supposidly good to .650 lift

just so ya know

JS

iTrader: (4)

There rated at .625 not .650
I have the new specs on the new 918's sitting here at my desk.

The Alchemist

iTrader: (19)

Kindof what I figured... but it never hurts to ask.

Tainted

iTrader: (9)

hmmm I'm gonna have to give chris a call for sure then. I think these could be a batch of the problem springs from earlier.

Are all springs hes replacing ones with the blue stripes only?

Websy21

iTrader: (34)

I'd stay away after researching them, I too was going to use them but now I know why they are so much cheaper. You get what you pay for as always. Do it right the first time and go dual or go home!

truckmann

iTrader: (8)

There is nothing wrong with a single spring. Manufacturing flaws happen it's just part of life.

Websy21

iTrader: (34)

I agree but have heard enough bad things about the 918's so would stay clear of them if you ask me.

The Alchemist

iTrader: (19)

The question I would ask is are people trying to push the limits of springs and are they setting them up with the correct amount of seat pressure. You can't blame the spring if people are running a cam with .595 lift when the spring is advertised as good to .600 lift. That's too close for my personal safety limit. But if they truely are failures due to manufacturing issues, well, what can you do.

Personally, I like the fact that they are a beehive spring and help reduce the mass over the valve, which is a good thing.

JS

iTrader: (4)

Bri is correct,a single beehive is 6 grams lighter than a dual and thats using a steel retainer.If u go tothe TI retainer it evens gets lighter and this is a good thing for the valvetrain...

Beehives have a better control too...
U need to do some reading...

Its a myth about dual springs being safer...
Again u need to do some reading..

Go over to ED's messege board and check out some posts regarding dual vs single.

Duals have there place but for most guys running under .600 I believe they are
a waste and depending on the application Comp/PAC/PSI all have a single beehives rated from .580 to .650 too...

JMHO.....

TwistedSS

iTrader: (3)

So are the new 918's available for sale?

BigKap94z

iTrader: (47)

I don't know the story with the revised Comp springs, but you can always order from PAC.

The Alchemist

iTrader: (19)

I went the extra mile and bought the titanium retainers. I'd love to get a set of lighter valves, but that would mean a new valve job on the heads as well.

3rdgentug

iTrader: (23)

yep your corect .625 not .650 lift, my mistake

yes the new 918's are on sale now too
its the only 918 spring you can buy from COMP now
if you buy them from another company you might get the older ones but its all comp now sells for the 918's

Yeahdoug

A Comp 918 or PAC-1218 with a steel retainer is 21g lighter than a 1.300" OD dual with Ti retainers.

BigKap94z

iTrader: (47)

You wouldn't get any old crapper ones from PAC, since it the ones from Comp got from associate or wherever those mexican made POS are from. I'll stick with PAC from now on. The quality 918's that comp had previously were made by PAC as well FYI. For anyone wondering the PAC equivalent to 918's are PN 1218, and the upgraded springs that have similar specs to the 1218's but are good to .650" lift are PN 1518. I run the 1518's now, and have about 5k hard miles on them with over .600" lift with an aggressive custom cam profile.

black_z

iTrader: (4)

Will they take back broken ones that destroyed your engine after 3,000 miles?