For that reason Beehive springs work very well with cc OEM lifters.. If I have a trouble with my R lifters, I willchange my springs/lifters and will get a set of Beehive (26918) and OEM lifters (850-16)..
If you got a lot spring pressure you should get MOREL lifters..

 

Then I wonder if the R's are overkill now?

 

What is your springs?

-I will never choose R lifters if I have a problem with them.. So for less pressure springs OEM lifters (with rev kit), for more pressure springs MOREL lifters will be my choice.. (I think the only best choice)

 

I have Beehive 918's.

 

Oh great! So now go and get a set of compcams OEM lifters and AFR hydra rev kit..! Thats the best thing you can do !

 

I think AC Delco or Speed Pro are just fine for later, but for now I thnk I will keep the R's in there, as there are no issues right now. And, considering how many people have had success and no failures with these lifters, I am keeping them in till I see the need or hear it break internally.
You can never tell if a part is going to break ahead of time.

 

Being that these are a so called race only lifter i would think that they would be able to handle alot of spring pressure. At least more that stockers.

 

What are your R lifters' preload ??

 

I did them according to COMP Cams instructions. There very loose, and I think its barely a 1/16 of a turn past zero. Not sure of what it was.

 

yea compcam suggest 1/16 preload after zero lash..

 

Hey Steves396lt1, I will take some pics of the stockers, and the Comp R's and e-mail them to you sometime tonite. The Morels were $495 from Thunder Racing, they can be had a little cheaper elsewhere. A little pricey, but I want the best, and Im not going to gamble for a few hundred bucks on a 12K stroker. I wonder if Comp would be willing to just sell a set of clips for these lifters. They seem easy enough to replace, as the clip on the stockers or the Morels can be removed or replaced very easily. Also, I really would like to know whats the big difference between the R (875-16) versus the stockers or the stock replacements from Comp (850-16). All I can see is the damn clip, and not much else. Anyone out there know what the hell the big difference is about them mechanically? All people are being told is that they can take higher RPM's, and there is no mechanical reason given as to why they can. I kinda feel that, from what I see between the R's and 850-16's, there isnt much of one.



Nick

 

I am in the same boat. I am putting a CC306 in and I don't know what lifters to buy. I looked at Comp Cams web site and they say that 850-16 will work with 986-16 springs. It also says that 875-16 would be an upgrade, but the 850-16 will work. So its between the OEM comp cams or the cranes.

 

It pobably has something to do with the bleed rate and internal spring.

 

Hey Steve, since you mention it, what do you know about the internal spring inside of a hydraulic lifter? I hear that the spring is in there just to hold the plunger up against the retainer, until the lifter pumps up with oil. Not sure if that is true, but thats what a tech at Thunder Racing told me when I asked. I asked because I find that the spring inside of the Comp R and the OEM lifter are the same, as one does not appear to have a different/stiffer spring rate than the other. The Morel actually had a softer spring that the R and the OEM, noticably at that. I did toy with the idea of swapping the stiffer spring into the Morel, but the OEM and R spring is quite a bit shorter, and a swap wasnt possible using that spring. Just some more food for thought. Maybe we can get some of the other guys like Injuneer, SStrokerAce, and Mindgame to give us some input, as they always have great experience and knowledge to share.



Nick

 

I think the spring tension would be tighter with a lifter that goes higher rpms. So maybe it acts as a cushion more than a bleeder. Id it was soft, you would think it would allow the lifter to bleed down quicker, and cause more sloppiness in the valvetrain.
We need some expertise in this.
Because, we as a collective group need to find out why these lfiters have broke on some engines, and for the most part havent.