"beehive" big block update
Thread Starter
Le Mans Master
Joined: Nov 2008
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From: columbus oh
"beehive" big block update
after installing the comp cam beehive set up on my 454 ho crate, i had a lot of lifter clatter when the mill warmed up and the oil came up to temperature...it seems the springs were to strong for the factory hydraulic roller lifters....the installed heights were right on at 1.880 and the lash was set 3 different times.....after calling comp cams and speaking with matt (tech) we determined a lifter change was in order....pulled the intake yesterday and installed new lifters from comp and it seems everything is ok now....mill is smooth and quiet now and looking forward to a test drive when the weather permits, rocker geometry is perfect and will post a pic later.....apparently some lifters are not up to these springs and actually their rate is not that much stronger than the stock dual springs that came from the factory....
Team Owner
Joined: Apr 1999
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From: Reno Nevada
2024 C3 of the Year Finalist- Modified
What part number of BeeHive spring was exceeding what part number of H-roller lifter?
The reason I ask is because PaulDana was thinking about installing the BeeHive springs
The reason I ask is because PaulDana was thinking about installing the BeeHive springs
Last edited by gkull; Dec 10, 2009 at 05:16 PM.
Race Director
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From: Millington Illinois
St. Jude Donor '08-'09
That is right. I hope he does not run into the same issue. One thing that might affect this that I didn't think of was that the lifter sees a higher spring rate than measured due to the stability of the beehive over the dual springs even though the rate and pressures are similar. Comp did recommend the spring that Pauldana ended up purchasing for his application. I wonder if increasing the installed height of the beehive to reduce seat and open pressures would have solved your problem without new lifters. This is one reason I ended up going with a rev kit instead of increasing spring pressure at the lifter internals.
Team Owner
Joined: Apr 1999
Posts: 21,953
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From: Reno Nevada
2024 C3 of the Year Finalist- Modified
63 Mako.....Inquiring minds would like to know. I personally have never built an h-roller motor. Friends have.
This Avitar picture was sad day. Just a few months ago my favorite BBC Cam Am car nearly burned to the ground.
This Avitar picture was sad day. Just a few months ago my favorite BBC Cam Am car nearly burned to the ground.
Last edited by gkull; Dec 10, 2009 at 05:16 PM.
Thread Starter
Le Mans Master
Joined: Nov 2008
Posts: 5,691
Likes: 12
From: columbus oh
Race Director
Joined: May 2005
Posts: 10,674
Likes: 122
From: Millington Illinois
St. Jude Donor '08-'09
Le Mans Master
Joined: May 2006
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From: League City Tx
Interesting stuff....
I have to adjust the valves on my 496 this weekend. The motor is new and rockers clack like crazy when cold. After about 20 mins of running they will quiet down some but still not enough for me. The builder assembled it with only 1/8 turn of preload so we are thinking another 1/8 turn may be enough, hopefully. Mine is also a hyd roller with Isky(Morel) lifters.
I have to adjust the valves on my 496 this weekend. The motor is new and rockers clack like crazy when cold. After about 20 mins of running they will quiet down some but still not enough for me. The builder assembled it with only 1/8 turn of preload so we are thinking another 1/8 turn may be enough, hopefully. Mine is also a hyd roller with Isky(Morel) lifters.
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From: Who says "Nothing is impossible" ? I've been doing nothing for years.
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Team Owner
Joined: Apr 1999
Posts: 21,953
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From: Reno Nevada
2024 C3 of the Year Finalist- Modified
You actually mean both of them!
It is actually maintained by a fellow shop. But we are often pitted together as we travel around the US doing the Historic races. So I've got to work on it several times in the last 4 years. The owner is like the hard luck guy. The guy that made these cars is still over by infineon raceway where this burnt.
I try to take my camera to pits when I can. We had three cars in this race
Here is the shadow fire
http://jalopnik.com/5369477/shadow-c...yline=true&s=i
It is actually maintained by a fellow shop. But we are often pitted together as we travel around the US doing the Historic races. So I've got to work on it several times in the last 4 years. The owner is like the hard luck guy. The guy that made these cars is still over by infineon raceway where this burnt.
I try to take my camera to pits when I can. We had three cars in this race
Here is the shadow fire
http://jalopnik.com/5369477/shadow-c...yline=true&s=i
Last edited by gkull; Dec 10, 2009 at 05:40 PM.
Race Director
Joined: Apr 2000
Posts: 17,672
Likes: 199
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
You actually mean both of them!
It is actually maintained by a fellow shop. But we are often pitted together as we travel around the US doing the Historic races. So I've got to work on it several times in the last 4 years. The owner is like the hard luck guy. The guy that made these cars is still over by infineon raceway where this burnt.
I try to take my camera to pits when I can. We had three cars in this race
It is actually maintained by a fellow shop. But we are often pitted together as we travel around the US doing the Historic races. So I've got to work on it several times in the last 4 years. The owner is like the hard luck guy. The guy that made these cars is still over by infineon raceway where this burnt.
I try to take my camera to pits when I can. We had three cars in this race
Hows the OP doing with his new springs ?
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,444
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
You can't make a clone car and just show up. You have to submit paperwork and be excepted months ahead of time to even enter a race.
As to the poster..........I would wonder what was wrong with original GM H-roller lifters that in their design have a spring pressure limitation.
I would have gone to a thicker oil weight to keep the lifters pumped up when hot.
I have taken apart H-flat lifters to clean them in the past. You have a small spring and a plunger. oil pressure pumps them up and makes "ZERO" lash
