how long do comp 918 blue stripe springs last...im considering purchasing some springs w/ 15k miles on them....whats the chances of one of them disasterpieceing my engine...cam specs used w/ the springs will be 228/228 .588.588 114

 

I've asked this question quite a bit, both from this site, and from TR. It's the lift that's hard on springs, and the cam you're going with is pretty easy (not REALLY easy, but pretty) in that catagory. The cam I was asking for was a 215/220 .600/.525 115lsa. I got the 918 springs, after everybody told me that they would be just fine. The guys at TR actually told me that they should last me well over 30,000 miles. I'd think you'll be okay. What cam did they come off of though, that may be something you'ld want to look into.

 

oh ya i forgot to mention it was used w/ a hotcam

 

LOL You're fine. They say nothing is easier on spring life than a hotcam. Have fun w/ your new camd toy.

 

I was going to ask a similar question today...

My cam swap was planned for this weekend... but some parts got held up in the mail so I won't be able to do the actual swapping of the cam.

I still have a lot of time set aside this weekend. Any reason why I can't install my 918's this weekend... run them with the stock cam all week... and then drop the cam (.553" lift) in next weekend? I'd actually rather break up my total install time.

It doesn't sound like there is, seeing as these springs in this post ran off a Hotcam (~.525" lift) for a while, and now they're running with .588" lift.

EDIT: Also, I don't really mind "doing things twice" as in, tearing into the valvecovers and removing the rockers. It's easy enough on my truck.

 

Marc, I don't know for sure, but applying some logic, it seems the problem is running a bigger cam with stock springs. I wouldn't be concerned about installing the new springs while running your current cam. JMHO.

 

Yeah that's what I figured, Predator...

I know some people recommend heat cycling and break-ins for new valvesprings, so I'm not sure how picky these springs will be with the amount of lift differences.

Maybe they'll actually last longer because they're getting a nice easy low-lift break-in?

 

I've used my 918s on two different cams and they're still going strong. TR220 and then my XE-R 228. I've yet to hear of a blue stripe 918 breaking...some say theirs have fatigued fairly early, but who knows what they went through and how they were setup. I personally would never buy used springs considering they are only $160, but you should be fine.

 

That could be true. I'd just give 'em the normal break-in procedure as if you had already installed the new cam. Then, after I installed the new cam, I would go through the break-in procedure over again. Seems pretty safe and fool-proof to me.

 

Cool, thanks for the reassurance.

 

thanks for the info fellas

 

hey bowtie4life...how do you like that cam? how well does it run?

 

the 228 is for a buddy of mine that im gonna be throwing it all in once we get all the materials...i have a baby cam 220/220 .588.588 115 and it makes good enough power for stock sounding idle

i hear the 228 is a good cam to go with, the last guy i talked to said he made 390 in his manual car with stock heads and longtubes

 

Of course if he was using 1.85 rockers the hotcam would be at .571 lift on the 918's. And if he was using stock retainers and really reved it hard I'm sure he could float em. Just remember if one breaks you might be replacing a head.

Personal opinion! >> Don't waste your time and hard earned money on used springs! Get new ones and break them in right.

 

I like and run the CC918 Blue Stripes, but I wouldn't buy used springs with 15k miles on them. To much at risk. They do fatigue. Will replace mine every 2 years.