mvvette97

iTrader: (18)

An article was sayin that the Beehive spring was producing 40 more hp over the duals. I would have to say that article is nothing but a load of bull. What do you guys think of that?

RedRallyeZ

iTrader: (20)

yeah, because everyone knows that high spring pressure robs the engine b/c some of the horsepower goes toward compressing the springs

mvvette97

iTrader: (18)

yea people say that but 40hp sounds a little out of this world to me

Asmodeus

Actually, spring pressure doesn't really rob anything. For every valve that is being compressed, another one is decompressing. When the cam is applying force to one lifter, another lifter is returning force to the cam.

The reason they probably gained 40hp was because their dual springs were running into a harmonic that the beehives cancelled out.

SOMbitch

iTrader: (8)

^^^^^^^ Ditto the first part! Don't know about the harmonics though??

Tony Mamo @ AFR

iTrader: (13)

Sombitch....Nice avatar....LOL

But to get back on track, a lightweight small diameter dual can provide the same high RPM stability as a beehive and also allow you to sleep at night.

Talk to the owner of a beehive sprung motor after one of his springs break.....it aint pretty as the valve only has one way to go. The duals can break also but your safety net is the other spring still remaining.

Tony

Asmodeus

If a critical harmonic occurs with your valve springs, the valve motions will momentarily be out of control. And it will cost you horsepower.

Unaffliated Racing

iTrader: (15)

ok..some of this was taken out of the relm of the origional post. If the only variable was the spring... a beehive would kick a double's butt all day long. Not a 40hp difference but a difference indeed. Tony...forgive me but your comments were way off track for this post. Yes we all know what can happen if a spring breaks. Notice I didn't say beehive.. I said spring. Anyone having the thought.." i'll get a dual so i'll be protected if the outer breaks" should rethink things. Yes it is less likely to have major damage with a dual if that occurs but an inner will not ever give me peace of mind. There is probably no person that stands behind the beehive design more than me. Comp has done sooo much spintron work with these springs vs. the dual.... The beehive will win hands down everytime. Tony... nothing personal. You and I have had great dealings in the past.

99mongooSS

iTrader: (4)

load of bull. And Im with tony, I like my sleep

mvvette97

iTrader: (18)

yea me too, I had the 918 springs on mine for a little while and I had some break. I now put the duals on and so far so good and I feel better too

99mongooSS

iTrader: (4)

had a buddy of my break one and then we pulled his heads off and found a big eyebrow in the piston. To say the least his heads where facked!!! he bent a valve into the head.

Unaffliated Racing

iTrader: (15)

So... the point of your post was what?....nothing? I'm not trying to be rude but you asked a specific question and this post has just turned into another.." 918 springs suck thread"...It amazes me what kind of damage people can do when they don't know any better. Like I said nothing personal..just trying to give info on your orgional post and keep it on track.

Tony Mamo @ AFR

iTrader: (13)

I beg to differ only because I did extensive spring testing early in the LS program on a Superflo engine dyno....

Our 8019 dual made the same power till 6700 as a Comp 918 (the beehive gold standard at the time) and made slightly more power from there till 7000 where we terminated the test.

IMO, the right dual set-up can be as effective as a beehive design and while a dual spring doesnt guarantee against engine damage (you can still tag a valve with only one spring providing less pressure), you are far less likely to drop a valve which causes catastrophic engine damage....a bent valve is far less painful on the wallet.

Tony

PS....The worst performing spring of the test was the dual Comp design with the ovate wire. They work well with stock rockers but this test was conducted with Crane Gold rockers which made valve control a little more challenging due to the added rocker weight.

mvvette97

iTrader: (18)

I don't have to have a point, I started this thread so I'll say whatever. I don't know why you are getting so bent out of shape over this. You have had good luck with the beehive spring but alot of other people haven't like me. Use what you want and if this thread upsets you so much then don't reply to it.

99mongooSS

iTrader: (4)

ok well you dont gotta be the post police...take a chill pill

chrs1313

iTrader: (24)

i dunno i am making some good power with duals...

Yeahdoug

It's different for every engine. THere doesn't seem to be a whole lot of difference on LSX engines.

I've seen decent improvements on BBC's. Mostly because it gave them some more RPM. We also had a Super Stock that saw a big difference in his little 289 since he had another 800 RPM of valvetrain stability.. Ended up winning his class in the nationals tihs year..

SOMbitch

iTrader: (8)

HAHA. Yeah, it's a pretty plush rideLOL

JS

iTrader: (4)

What about up to 6500,I would think there would be no difference between a good set of duals and a beehive.....

edcmat-l1

iTrader: (10)

HAHA. I was thinkin the same thing......


I agree 100%. I've never liked the idea of singles. Dont recommend them. I dont install them.
I cant see how, if you have good valvetrain control, you could make that much more power
just with a single spring. Harmonics aside.