mdacton

Call and bitch em out.


Glad I will never use a set of behives.....sound like POS IMO, I know the theory behind it but I have no faith in them

truedualws6

I have a Crane mic and the beehive retainer sits on the first lip too. Mine
is exactly .150" down on the lip so I just add it back to the reading. This
way of measuring height is the best if you do it correctly. You need to seat
the keepers and retainer each time. Per Ai instructions I just snug the mic
in with the retainer and keepers in place then give the tip of the valve a good
rap with the resin end of a big screwdriver. One or two times doing this will
seat the keepers and give you the best reading. I found this rapping method
gave me more consistent readings that were .02 to .06 taller than without.

I ended up with installed heights from 1.815" to 1.824", not as close as I had
hoped for, but close enough for my baby cam set up.

truedualws6

I ran the beehives for about 5k miles, most of them pretty hard as my car
is more for playing on the weekend and when I take it out I usually flog it
pretty good. They worked fine, but I'm with you in that I just don't trust a
single spring. I've since switched to dual springs and even though my spring,
retainer setup is much heavier that the beehive setup, I feel better knowing
there are dual springs in there. We will see at the dyno if the valve train is
doing a good job or not as this is the only mechanical change made. Everything
else is VE stuff.

cehan

I wonder how Lloyd checks them?

96flame

Its my understanding that all spring mics of this design work that way. You have to do a bit of math.

Javier97Z28

Then what's the advantage of selling these "beehive" micrometers? They're more expensive and of no benefit to beehive owners.

I could have just borrowed a regular one.

Javier97Z28

I spoke to comp's tech line.

They said to just subtract .140 from the reading. He apologized and literally told me "sorry, it's kinda a gay thing that you have to do that..."

I mentioned to him that 795 retainers don't fit, and he sounded suprised. Unfortunately I was in a hurry b/c I had a work call coming in I had to take and couldn't discuss further.

So basically the 4930 tool is useless, don't buy it.

LT4POWR

The Engineer

I always use my dial-calipers to re-measure what the valve spring micrometer indicates. I know my dial-calipers are correct.

My PAC-1518s are installed at about 1.780".

WD

Javier97Z28

I'm almost done.. I'm installing my 1518's at 1.75"

cehan

So how did you end making the valve spring micrometer work, by subtracting the 0.140" as Comp suggested?

Javier97Z28

Yep, subtracted the .140 and bored out the tool so the retainers would even fit

I doublechecked readings w/ a digital caliper for the first couple springs to make sure.

The Engineer

Do you have an idea what your closed seat pressure is now with the 1.750" installed height? I know 1.800" is 130# closed seat pressure. It seems like a lot of people now-days don't prefer the beehives for HRs in the range you and I have.

WD

Javier97Z28

I'm not sure... I can probably check with PAC to see if they have any documentation on the numbers.

truedualws6

It's 146# @ 1.75"