Bret, I understand what you are saying, but there is a possibillty that there are other issues with the rockers. Maybe there idea of pre-load isnt right? And I am trying to see if people had other issues besides what you have found. Thats all.

 

No there is no design or install issues here, the parts I have seen are not a problem of misuse they are a problem of part failure plain and simple. The lifter is designed for zero lash or very light preload, that's how you make a hyd roller lifter work at high RPM. All of these failures are on different motors with different parts surrounding them, good pushrods, bad pushrods, cheap springs, beehives with Ti retainers, NSA and SA rockers, lifter adjustment, the list of differences is endless but the same exact part fails period. Either the manufacturing or design of the retainer clips is bad and they break, especially in such short mileage. Believe me if anyone is going to look for a honest reasoning for these problems it's me. I sell a lot of Comp Cams parts and have stopped selling these parts until the problem is fixed to my satisfaction. I don't want to say you are getting it from the horses mouth, but you pretty much are, your not going to solve this and neither am I, that's why I'm not using them at this time.

Bret

P.S. I have the older orginal design Comp R's (link bar retrofit style) in a $20+K motor and they are great, if I was buying a new set today for it I would be running Morels.

 

Thanks. One company emailed back and said GM has a High Performance Hydraulic roller. They have a few different numbers. DO you know of them being High Perf? ANd doesnt Crane make theres?

 

There is only one or two companys out there that makes all of these things for GM, Crane, Comp etc... I just don't know who it is since I don't buy them in 1000 or larger lots.

GM might but IMHO you only have two choices. GM OEM lifters or Morel Aftermarket ones.

Bret

 

Regarding Comp's customer service. It sucks MAJOR ***. I've called 3 times per day for the past two weeks and left one message every day. Never can get through to anyone. Finally got a call back a couple days ago but I wasn't here. Called the guy back on his extension for the past two days and left messages and still not heard anything. I sent these lifters in to have them checked out and replaced. Starting to be more of a PITA than it's worth.

 

Same here, I kept trying to contact Comp and I even tried to go through Dave at Combination Motorsports (where I bought them) but now I can't get anything from either of them. I guess they stuck me with them.

 

Unfortuneately Comp is a busy place, I leave messages for my reps there and wait for them to get back to me. I would say to call where you got them from and work it from there, and if they don't get back to you and help you out that's scary.

Bret

 

I emailed comp a link to this post and here was the reply i got.

"Any of our "R" series lifters are race lifters. The preload must be
maintained, when the lifter pumps up with oil it acts like a solid.
The people on these message boards complain about only getting 1000 or 3000 miles, turning the motor 6500 + and finding clips in the oil pan and
probably never checked the preload in those 1000 or 3000 miles. How
many pass's down a quarter mile does that equal to?? (750 passes) Most
racers with solid rollers replace or have there lifters rebuilt around 50-100
pass's depending on the application. Let me remind you this is a race
lifter. They are very picky on the .002-.004 of preload if that is not
there the clips comes out. Using a dial indicter when setting this
small amount of preload is the most accurate way. This needs to check
depending on how hard the engine is ran and how often. We will replace the
lifters with new lifters but only after the customer is told this very same
thing. Someone hit it on the head about using an OEM style of lifters
and these should use if the person does not want check or readjust preload
on a regular time frame. If they need a set replaced have them call our
tech line (800-999-0853) and get a return # (RMA). This is limited for a
term of 1 year from the date of purchase. Feel free to post on the board
and have them call our tech dept. when needing help or have questions."

 

Good answer.

I would say that most people don't readjust the rockers after they start up the motor the first time. For me that's just a standard thing to do, I know it's not fun with the alternator in the way but if you don't readjust the rockers after the motor gets warm you can easily have problems. Still the old style didn't break if you didn't readjust them.

Bret

 

That is encouraging, but...where in the world was any of this stated with the product. If it is that sensitive, than it should have been indicated somewhere in the directions. Obviously it is lack of communications on their part if this many people have had problems. You definitely don't want to start blaming the customers for misuse when proper instructions were not given. We did not engineer the product.

 

I don't understand what would be the point of owning a Hydraulic lifter just to constantly have to adjust it. Isn't that why we all have Hydraulics instead of solids? I believe most everyone does adjust them while running. I know i do, and i usually adjust them a few days/a week later. I also agree with Don2. If they want people to run them a certain way they need to give instructions saying so. Whats also funny is that everyone that contacts them about these lifters gets the same response that its the first they've heard of the problem. I hate Comp!

 

I agree with rechecking the valve lash after the motor has been started up and ran. I dont believe that a hydraulic lifter should be checked as often as Comp says, even if its an "R" lifter, its hydraulic! Even then, a hydraulic lifter shouldnt fail like this, its simply a crappy clip holding the lifter together that will fail. And this bull about it being a "race" lifter? To me that would be a SOLID. Anyway, for whoever needs or wants a really nice hydraulic roller lifter, go with Morels, like I did. Anyone want to buy 15 Comp R lifters with 7K miles on them?



Nick

 

If anyone buys his 15 Comp R's i have 7 more that i'll sell you. You'll have a complete set and several extras for when you need them, and you will need them.

 

Guys,

I don't mean to recheck them. Install the parts, run the motor to get it hot. Tear it down and redo the rocker preload. That's it they should work like a champ after that.

I do agree that there are zero instructions and you have to know how to do it. With that being said they shouldn't fail if you put more preload on them.

Comp is not a bad company do deal with if you are a dealer and you understand the ins and outs of what is going on with all the parts. At the end consumer level it's not the best thing.

Bret

 

I finally got an address to send mine back. We'll see what they have to say. As for race only, that's BS. Nowhere on the package or instructions did mine say anything like that.