Beehive Springs info
Beehive Springs info BEEHIVE Springs
Why beehive valve springs? Beehive valve springs have been around since the days of the Wright Brothers Airplane; they have been used for over 100 years and are not new to the market. In fact Beehive valve springs are currently used in 90% of the OEM market to achieve the performance and desired valve control demanded by everyday driving conditions. PAC was first to release the new type of wire cross section known as Multi Arc or Ovate wire and has been successfully making millions of MA beehive springs per year.
Beehive valve springs have been known in the industry as having a lower mass at the retainer end thus allowing for better valve control. This is only partially the reason for the better valve control. Beehive valve springs are unique when it comes to coil spacing, rate control, and also using a PAC pioneered MA wire cross section (see below). Beehive valve springs are tailored for specific engines and specific camshafts using PAC RPD and are thoroughly tested using extremely sophisticated load check equipment.
With this technology PAC has been able to excel at providing the best valve train control with beehive valve springs to our customers and the worldwide market.
Fig. 1 Standard cylindrical round wire spring cross section. Red being the highest stress point facing towards the inside diameter of the spring.
Fig. 2 Wire cross section for Multi Arc and Ovate wire more commonly used for Beehive springs
Why beehive valve springs? Beehive valve springs have been around since the days of the Wright Brothers Airplane; they have been used for over 100 years and are not new to the market. In fact Beehive valve springs are currently used in 90% of the OEM market to achieve the performance and desired valve control demanded by everyday driving conditions. PAC was first to release the new type of wire cross section known as Multi Arc or Ovate wire and has been successfully making millions of MA beehive springs per year.
Beehive valve springs have been known in the industry as having a lower mass at the retainer end thus allowing for better valve control. This is only partially the reason for the better valve control. Beehive valve springs are unique when it comes to coil spacing, rate control, and also using a PAC pioneered MA wire cross section (see below). Beehive valve springs are tailored for specific engines and specific camshafts using PAC RPD and are thoroughly tested using extremely sophisticated load check equipment.
With this technology PAC has been able to excel at providing the best valve train control with beehive valve springs to our customers and the worldwide market.
Fig. 1 Standard cylindrical round wire spring cross section. Red being the highest stress point facing towards the inside diameter of the spring.
Fig. 2 Wire cross section for Multi Arc and Ovate wire more commonly used for Beehive springs
Last edited by 99blancoSS; Jun 1, 2008 at 10:38 AM.
That would all be in the reference charts. Rates, pressures, binding information, diameter, all that pertinent information is part of the spring selection.
All the information above is provided from PAC. Not a whole lot of people know who they are so they dont get to the website to read the info so I posted it. They make everything from the beehive to triple springs they've been doing this for a while.
The 1218 and 1518 are ls1 specific drop in springs but thats not say you cant use one of their doubles or triples if you match it up correctly. Size of the pocket opening and closing and binding info.... Most people just think that ahhh I'll throw a double on it and call it good. Its not the best way to do it always, so I'm trying to provide some options and alternatives.
Here's an examples for you. when I bought my TR224 I was told Cmp 918's and I didnt need to swap retainers. Ran that combo for a while never an issue made great power. (like 4 yrs ago now)
Then I step up to heads and double springs and the same cam and made ok power but was always disappointed with trap speed. ( who's to say this was spring related?) Just trying to be honest with my experiences.
Whydid I go to doubles? What was the reason? This was like 3 years ago and I thought bigger was better with valve springs, no matter what. IT isnt the case. The valetrain needs to be calculated carefully. Maybe the thought was I would never have to replace them? Dont know but IMO I gave up some power by over springing it..so to speak.. am I right or wrong, that can be argued and I'm not going to be part of it..LOL
I'm not an expert at all and certainly dont claim to be
I just report my results and when I can post accurate information obtained from the source.
All the information above is provided from PAC. Not a whole lot of people know who they are so they dont get to the website to read the info so I posted it. They make everything from the beehive to triple springs they've been doing this for a while.
The 1218 and 1518 are ls1 specific drop in springs but thats not say you cant use one of their doubles or triples if you match it up correctly. Size of the pocket opening and closing and binding info.... Most people just think that ahhh I'll throw a double on it and call it good. Its not the best way to do it always, so I'm trying to provide some options and alternatives.
Here's an examples for you. when I bought my TR224 I was told Cmp 918's and I didnt need to swap retainers. Ran that combo for a while never an issue made great power. (like 4 yrs ago now)
Then I step up to heads and double springs and the same cam and made ok power but was always disappointed with trap speed. ( who's to say this was spring related?) Just trying to be honest with my experiences.
Whydid I go to doubles? What was the reason? This was like 3 years ago and I thought bigger was better with valve springs, no matter what. IT isnt the case. The valetrain needs to be calculated carefully. Maybe the thought was I would never have to replace them? Dont know but IMO I gave up some power by over springing it..so to speak.. am I right or wrong, that can be argued and I'm not going to be part of it..LOL
I'm not an expert at all and certainly dont claim to be
I just report my results and when I can post accurate information obtained from the source. Last edited by 99blancoSS; Jun 1, 2008 at 12:10 PM.
