BROKEN Blue stripe 918
BROKEN Blue stripe 918 Pulled the heads yesterday to send them out for porting. Installed the 918s less than 3 months ago whle I was putting in CC Pro Mag 1.85 roller rocker and CC Hi Tech Pushrods. Decided to remove the rockers, springs and valves since I'm having larger REV SS valves installed during the CNC. When I was packaging up the springs for shipment I pulled the retainer off of the spring and the first coil of the spring stuck to the retainer. I don't even have 1K miles on these springs yet and very little high RPM revving. I'm puzzled because we have been led to believe the Blue Stripe 918s had supposedly solved the breakage problem. I was lucky because it broke at the first coil wrap instead of the middle which would probably allowed the valve to drop. Anyone else have any broken Blue Stripe 918s? If you thinking about installing 918s in the near future be aware that the Blue Stripes can break. I hope this was just an isolated incident. If I break another one I probably won't be so lucky. I'm glad I decided I to have my heads done. I was driving around in a ticking time bomb and didn't even know it.
Re: BROKEN Blue stripe 918 ****! I just installed these on my patriot LS6 style heads. I read around on the net for a solid month looking for a blue stripe failure.. and you end up having one three days after I install my heads. Damn, I'll think about this every time I hammer on my car now. Hopefully this is an isolated incident.
Btw. what cam were you running with the 1.85 rockers?
Btw. what cam were you running with the 1.85 rockers?
On The Tree
Joined: Oct 2002
Posts: 147
Likes: 0
From: Long Island, N.Y.
Re: BROKEN Blue stripe 918
Btw. what cam were you running with the 1.85 rockers?
Re: BROKEN Blue stripe 918 Makes me kinda uneasy also. Just finished heat cycling mine and they have less than 200 miles on them with my new TR224. Hopefully they will hold up!
Re: BROKEN Blue stripe 918 eallenbogs,
Weren't you using the comp 206/212 .565/.572? If that lift was with the 1.7 rockers.. going to a 1.85 changed it to .613/.622!! If that's the case.. I can't belive you only broke one of them.. let me know on the cam, I'm very interested in this.
Thanks
Scott
Weren't you using the comp 206/212 .565/.572? If that lift was with the 1.7 rockers.. going to a 1.85 changed it to .613/.622!! If that's the case.. I can't belive you only broke one of them.. let me know on the cam, I'm very interested in this.
Thanks
Scott
Re: BROKEN Blue stripe 918 Yeah, I don't think with the cam's lift and the 1.85 rockers that these were the appropriate spring for your uses, hence it broke.
I would have no problems running a 918 spring on any car I drove as long as it suited the application.
I would have no problems running a 918 spring on any car I drove as long as it suited the application.
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TECH Addict
Joined: Dec 2001
Posts: 2,298
Likes: 2
From: new england
Re: BROKEN Blue stripe 918
Yeah, I don't think with the cam's lift and the 1.85 rockers that these were the appropriate spring for your uses, hence it broke.
I would have no problems running a 918 spring on any car I drove as long as it suited the application.
I would have no problems running a 918 spring on any car I drove as long as it suited the application.
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Brett Foote
TECH Enthusiast
Joined: Feb 2003
Posts: 596
Likes: 1
From: Austin, TX
Re: BROKEN Blue stripe 918 lets not all get too excited. Just because one person posts about there blue stripe valve springs breaking, doesn't mean everyone's will now. I agree, 1.85 rockers are a little much with almost any decent size aftermarket cam. Also, depending what cam you have, and what lobes its ground on, if you have real steep ramp rates, its not recomended to go 1.85 rockers
Re: BROKEN Blue stripe 918 My lift is 515/522 so the effective lift is 563/570. Comp said I could safely go as high as 585 by either buying a cam custom ground for the 1.85 lifters or by using one with less lift ground for stock 1.7 lifters.
TECH Enthusiast
Joined: Feb 2002
Posts: 636
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From: HTownRacing.com, TX
Re: BROKEN Blue stripe 918 Depends on the lobe design, if you received XER lobes, I'm not suprised and would not have recommended this particular cam/ rocker combination no matter wether I worked for Comp or any reputable speed shop. Changing out rockers is the number one reason why a spring will break because there is always the thought overlooked or simply flaw in the thought process. Just when it seems close it was downhill from the start. I've safely been running .591 lift on stock heads for ~9000 miles now utilizing the blue stripe 918s. Not to say I am right and you are wrong but just to again be wary or what will and will not work for your application or anyone's reading this.
Re: BROKEN Blue stripe 918
My lift is 515/522 so the effective lift is 563/570. Comp said I could safely go as high as 585 by either buying a cam custom ground for the 1.85 lifters or by using one with less lift ground for stock 1.7 lifters.
Re: BROKEN Blue stripe 918
You should avoid Comp springs; no quality control - period!
Re: BROKEN Blue stripe 918 Son of a motherless goat. I thought these beehive springs were good for up to .600" lift? Man, I sure hope for CC and the people who have these springs on their car that this isn't an indication of another "bad batch" of springs.
Edit: Eboggs, could this have anything to do with the boost you're running or does it not play a factor in this situation?
Edit: Eboggs, could this have anything to do with the boost you're running or does it not play a factor in this situation?