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So I was doing some looking around on here last night and could not find a good answer to this question so I'll ask it. Are the Comp 918 valve springs good springs for a DD or should I look for something else? I read they had a bad batch a while back that was prone to breakage, but I also saw several people who never experienced a single problem. If they fixed the problem it sounds like the spring I'll need, if not it's back to the search.
Are you looking at them as a replacement for the stock springs and keeping the stock cam or as an upgrade along with a bigger cam?
Im looking at upgrading to a slightly larger cam along with them.
How big of a cam?
yes, specs needed. did u mean slightly larger than stock?Quote:
Originally Posted by bangbangskeetskeet
not terribly big, TR220/220 .551/.551, sorry I should have included all this in the original post
918s will be fine mine were used when i put em in and theyre still going 4 years later.
got them in mine, and i have more lift that the cam you just listed
No, I have a pic of one broke on one of my heads that Allen pulled off,
What setup are you running and how long did you have that set in there?Quote:
Originally Posted by Jamest
4 years and a baby turbo cam,
Dang...but how hard did you run it for those four years?
You are going to get good and bad reviews no matter what springs you go with. With the setup you are going with seems like you could go with almost any spring and be fine. Horror stories exist for every product. I personally like the extra insurance of dual springs if its rated to the right lift don't worry too much.
Quote:
Originally Posted by kerrige
couldnt agree more, id be the first to tell ya i wouldnt use comps crap for anything, ok maybe there cam grinds cause thats the only thing ive seen worth something from them..
id look into some behive springs, and dual springs for added insurance.
I really like my Patriot Extremes so far.....and I run mine hard. All the time.
Hmmm ...aren't 918 beehive springs ...Quote:
Originally Posted by skeet
http://www.houseofboost.com/store/im.../26918_600.jpg
To the OP: The 918's are a good all around spring. Since you are saying a ~.550" lift cam, the 918s will work just peachie as they are good to .600". Remember something about springs ... you will lose power if run too high of spring pressure. It isn't a bunch of power, but the losses are of the parasitic type. Double springs are good insurance if you're cam needs it, but probably overkill for the cam you are looking at. Remember also, you'll need new seats, retainers, keys, and seals when you put the new springs in. Seals may not be needed, but are relatively cheap and this is the best time to replace them.
I think those are the springs that came in my cam kit from Thunder Racing. I used the exact same cam, 918 springs with stock retainers, keepers and seats. I didn't run them for a very long time with that cam but I certainly did run them hard and didn't have any problems. I still run them but I'm on my stock cam right now.
How long did it take them to ship you your kit when you ordered it? I'm still waiting on mine to get shipped 2 weeks later...Quote:
Originally Posted by Axekick
That was a while back so its hard for me to remember, but I think I remember it taking a while. I'll see if I can dig up any old emails as a clue. I wouldn't worry, though. I got all my stuff just as ordered. Trust me, I hate waiting for my new toys too.
cant go wrong with the patriot dual golds. very proven. 918s are good. but they have failed in the past. just not worth the risk to me. just my .02
I hear ya, but I ended up going with a slightly smaller cam than I had originally posted. I think I should be fairly safe with them, as I don't romp on the truck until it is fully up to temp, and they're rated far above what I will run for a while.Quote:
Originally Posted by TurboMic
Yup, they have had issues in the past. That was a while back (years ago). There was a bad batch of them. If the OP is buying (or has bought) new from a reputable reseller, there should be no issue. I don't blame you for your opinion, though.Quote:
Originally Posted by TurboMic