Only in drag racing can you spend $300+ on a part and have it fail in the exact environment it was designed to work in. I found 2 clips in my oil pan tonight.

Comp Rs are huge pieces of SH*T!

 

I've said it before, in this post, and ill say it again, if lashed correctly, these lifters will not come apart...i ran the newer style in my last 355, turning 7000rpms regularly, and after a few months of running on my new twin turbo 355, also seeing 7000rpms, they are still good. While lashed correctly they make noise, similar to a solid lifter motor, they dont seem to come apart...just my $.02

 

my problem was not lifters it was guideplates and an exhaust leak so My comp rs were still good

 

thankyouthankyouthankyouthankyouthankyouthankyouth ankyouthankyouthan
kyouthankyouthankyouthankyouthankyouthankyouthanky outhankyouthankyouthankyou

 

youre welcome...? have them in your motor and your worried eh? ...just keep them lashed as instructed, i know they are loud, but only at low rpms, then they work great up top

 

Mine were lashed correctly. The stock ones in either of my other motor setups never had a problem. My friends with Morels and stockers have never had this issue either.

If they were incorrectly lashed wouldn't it be plausible to assume that many would pop thier tops? Why did only 2 of my 16 fail? If they were incorrectly lashed, why wouldn't we see old style and stockers breaking thier snap rings?

They are garbage.

 

Not worried in the slightest. I've had them on the car for a year now (probably around 7K miles) and they've worked flawlessly. If you read the thread you'll see some of the arguments I've tried to explain.

 

no
Perhaps the rockers for those two were not adjusted correctly? Or perhaps those two had less tolerance for breakage than the others?
There is no reason whatsoever for the plunger to ever come in contact with the clip when the rockers are adjusted properly. And most if not all of these pictures you can see how the clips have been beaten to death.
Because most people who have stockers always adjust them at least 1/4 to 1/2 turn giving the plunger plenty of clearnence from the clip. This 1/8 to 1/16 turn crap is down right ludicrus for a hydrolic lifter. Especially if using aftermarket studs with a different thread count. If you just go by the default "1/8- 1/16 past lash" method instead of taking thread count into perspective you will see results as we've seen in the pictures supplied on this very thread.
meh... more people who use them have done so successfully than those who haven't.

 

I still say stay away from them My Morrel's made more power any ways

 

I had an interesting comp r failure in that it shows a single event and the resulting buckling of the retainer. The lifter did not fail on its own, it was due to a broken valve spring earlier this summer, which among other things bent a valve, and also caused the pushrod to jump out of the lifter socket and nick/flatten the inner perimeter of the retainer. See the pic below.

I should note that all my other lifters looked great, they've been in the car for about 1 1/2 and have maybe 2,000 miles on them.

I think that once the retainer is bent/buckled, and the lifter assembly is loose, there is more relevant movement between the cup, lifter body and retainer, which causes the retaing to fail due to fatigue...

So this is just one way that the Comp Rs can be compromised... I also believe after looking over the retainer design, that the retainer could fatigue and break just due to insufficient lash in combination with a number of cycles at higher rpms (would still need to prove this though)... The point is, the lifters probably wouldnt break if adjusted properly, (however it seems like the are much, much less forgiving than other brands and OEM) Not suggesting anyone use or not use the R's, just thought my failure was pretty cool since you can see a real cause and effect!

 

mine just came apart time for some morels

 

Just an FYI. I have had the newer style comp r lifters in my car for over 1 year. I am starting on a cam swap, and just pulled the intake last night only to find...... don don daaaa....




All the lifters are in purfect shape

 

Congratulations... you are one of the "lucky" ones...

 

Isn't it safe to assume that when the clips break and come loose they're going to get beat up by the pushrod.

 

I would say no. The only way that you will get the pushrod to hit the clip is if the lash is set WAY to loose, or your guide plates are mis aligned. I had this happen to my car. One of the guide plates was pushing the pushrod toward the center of the motor. I didnt notice it because side to side the rocker arm was good, but after very close inspection I found that the pushrod was jumping out of the lifter cup. With a little grinding everything lined up, and I have not had any problems with my lifters.

Here is a little tip that I figured out. If you start the motor with the valve covers off, watch all the lifters to see when they get oil. If you have one or two that struggle to get oil or do not get oil at all check the alignment of your guide plates. If the guide plates are off they will force the pushrod to loose its seal with the lifter. If this is happening it may be 1 week or 3 years but something will give.