CaptUSA

iTrader: (5)

I've talked to a LOT of people about this including Comp and TR. I'm running .597" on 918 springs, and was wondering how many of you out there are doing the same / similar thing? TR told me to check 'em every 30k miles, but was wondering what you guys were doing? Thanks.

SeeYaSucker

Probably not many people at all are doing that, thats not so smart, because the max lift is only .600" . There are a lot better spring choices out there for .597" Lift.

But thats jsut my opinion, I am by no means an expert.

gomer

iTrader: (13)

I ran a 231/237 .598/.595 for a while on 918's.. changed over to duals for piece of mind and sold the 918's to a local guy with a TR230.. he's still running the hell out of it over a year later without a problem.

PREDATOR-Z

PP"Gold" duals or similar. Why stretch another weak link.

cyphur

iTrader: (10)

Probably not too many people in their right mind. Thats like asking to drop a valve. Or better yet...tryin to be like harlan...runnin the stock crank at his mad crazy hp levels.

MyLS1Hauls

iTrader: (2)

I'm not sure why so many people think that 918s are just a ticking time bomb. Do a search on here and try to find a post where a 918 blue stripe failed. You wont find anything. .600" lift is still .115" away from coil bind. Good springs can be run as close as .060" from coil bind. They were designed for .625" lift originally, then comp mysteriously lowered that to .600" when their $500 921 duals came out??HMM... Beehive springs are progressive rate too, duals are not. I've been running 918s and so have several other buddies and they have all been trouble free. You'll be fine running them, but I would definitely recommend checking the spring pressures at 25k. I like my lightweight 918s, over heavy *** duals that need more spring pressure just to control their own weight, putting more strain on the valvetrain.

LSs1Power

iTrader: (5)

Im running the 918's with the FM7 cam which has a lift of .587 .593. I have been driving the car for a whole year now and running the car hard at the road course tracks with no problems. I'm going to go with the 6.0 heads and 921's when i install my SC just for safety.

GTS346

iTrader: (1)

Actually do a search on failed 918's and you will be surprised, been a few buddy.

2000Blackout

iTrader: (1)

How many of those have been the bluestriped 918's?

CaptUSA

iTrader: (5)

Hmmmm indeed. That is very intersting, I'd never heard that before. That's great! It makes sense too. Companies do it all the time. In fact, GM did a similar thing w/ the F-body if I'm not mistaken. To help boost sales of the Vette flagship platform.

Unaffliated Racing

iTrader: (15)

There have been...NO blue stripe failures. Also it was only one batch of the Non-stripes that had that issue. Those springs can safely handle a .650"..leaving you .060" before coil bind. A beehive style spring works even better the closer you run it to coil bind

cyphur

iTrader: (10)

check out this thread :

https://ls1tech.com/forums/showthrea...lue+stripe+918

and then check out vince's post, which is #20(end of page 1) and on....

https://ls1tech.com/forums/showthrea...en+blue+stripe

and this one:
https://ls1tech.com/forums/generation-iii-internal-engine/114237-link-pic-what-blue-striped-918-s-did-my-motor.html

all talking about blue stripe failure(the last two strictly concerning vince's).

the blue stripe 918's are great springs. very dependable. countless people have ran countless cams w/o ANY problems. don't get me wrong...i'm not trying to knock the springs here. just pointing out that yes...the springs have failed before.

MyLS1Hauls

iTrader: (2)

OK, well theres two documented failures of 918s, which i honestly missed (not usually around here in the fall/winter). I dont know the installed height of those springs or what they went though, so who knows what the cause was. Two instances are not nearly enough to get your panties in a bunch over. You know how many thousands are out there working perfectly? Manleys have failed, 987 and 978s, 941s, 295D, Patriot, REVs 1116, and the Crane duals have all failed...From what I've seen 918s have the best success rate, single or dual. Sure when/if they do fail it will probably be pretty catastrophic, but **** happens when you're pushing the limits. I'd still like to hear from someone who popped a dual spring at 6k...I'll bet it wont be good.

m1key99WS6

iTrader: (1)

I've got over 55,000 miles on my 918's with .589 lift cam, no valve float, still dyno's the same amount @ the tires as when I first put them on spinning the motor to 6700 RPM all the time. I'm am in no way recommending you do this, however I have not had a SINGLE issue with them.

cyphur

iTrader: (10)

true, 918's have had a great run, they're great springs. i am just not going to take the risk and run my 231/237 on them, on the off chance that i'm the third person that does snap one and i drop a valve. at least with PP gold duals i'll have something there still holding it up somewhat....to limp to the side of the road or next parking lot.

F1_SS

I have 918's on my cam, F1 (.591/.569), the owner before me had like 10k miles on them and me wanting to penny pince i installed them on my car, now the springs have a total of 18k miles and no problems what so ever. I have not dyno'd to see if im losing power because of them but the car feels just as powerful as normal.

SouthFL.02.SS

I ran the same cam (TSP 231/237) with 918's and stock retainers for 9k miles before swapping heads. No problems. This cam does have less aggressive lobes than XE-R, so that helped out also.

CaptUSA

iTrader: (5)

Still pretty amazing in my book. I feel no hesitation at all w/ putting these things in now. Thanks guys.

GTS346

iTrader: (1)

And where's all these threads on Manley springs failing?

Sure the 918's are great and used in a stack of cars, but by the sounds of your posts it makes you out to be a spokesman for COMP. You don't work in the advertising department do you?

Joking buddy, gotta have a laugh here and there.

necrocannibal

iTrader: (5)

I have a 408 with 236/242 .598/.610 114+4 cam and the blue strip springs and have had no issues with anything. Even spinning the engine to almost 7000 there were no issues.