Another comp lifter failure

[jusglazin]

500 miles on rebuilt 360 with Comp hydraulic roller cam and lifters. Heard a tapping sound so I pulled the valve covers and found number 6 intake was loose. Adjusted it almost all way down to get rid of the clearance. I thought maybe it had wiped a lobe. Pulled it apart and found the lifter plunger has stuck a few thounsandts in the hole and won't come back up. I read all the post on the problems folks were having with Comp cams lifters but it was too late I had already buttoned it up. I'm filing a claim with them but I doubt I'll have any luck. Question now is if I should replace them all or take a chance the rest will live.

 

[lewtot184]

i think hydraulic roller tappets can be a can of worms on an aggressive lobe. some people do alright but there seems to be those who always have issues. if it's possible i'd convert to solids.

 

[benno440]

change over to lunati lifters or whatever, i have lost 8 comp cams lifters all up now and engine has only done 3000 miles, swapped to lunati and not a problem

 

[SUPERSTOCKRACER]

I've used Comp hydraulic lifters for years without any issues. I even went the Comp solid roller lifter route too and never had a problem.
Replace it and keep running them. Even the best companies have issues.
I broke 2 Jesel rockers @200.00 each rocker. Replaced them and no issues in 3 years.

 

[bigmanjbmopar]

Is it me or does your lifters look like they are installed backwards? aren't the link bars supposed to be on the valley side not the head side?

Old pic of my comp solid rollers -

 

[bobtile]

I have lunati hydraulic rollers and have had no problems. I think you might be right bigman. They look backwards.

 

[jusglazin]

Is it me or does your lifters look like they are installed backwards? aren't the link bars supposed to be on the valley side not the head side?

Old pic of my comp solid rollers -

Not on a small block with the comp lifters. Believe me, I researched that many times before I installed them. I guess I'll try installing just a pair and see what happens.

 

[bigmanjbmopar]

http://www.summitracing.com/parts/cca-8920-16

 

[jusglazin]

http://www.summitracing.com/parts/cca-8920-16

Those are what's installed and the instructions below say to install the way they are. They are opposite of a big block.

2. Setup: With your cam installed, simply place the prepped lifters into the lifter bores. If you are using hydraulic rollers with a link bar, pay close attention to which direction the link bar faces. The link bars on retro-fit lifters should face towards the valley of the block (except 8920-16, link bars must face the cylinder side of the block instead of the valley). If the link bar has an arrow on it, make sure the arrow is pointing upwards (↑). If your engine block was originally equipped with hydraulic rollers make sure the lifter roller wheel is positioned to roll along the camshaft lobe. Failure to do so will result in camshaft damage and improper oiling. Now that the lifters are in place, you can begin to install the pushrods and rocker arms.
COMP Cams® 3406 Democrat Rd. Memphis, TN 38118 Phone: 901.795.2400

 

[bobtile]

So, do we know if those are 8920-16 lifters?

 

[jusglazin]

So, do we know if those are 8920-16 lifters?

Yes, I go them directly fom competition along with the 268 roller camshaft and matching lifters. It threw me for loop two as I have installed several in big blocks and it just didn't look right. I read their document and even called them about it. Problem I had with it was it required clearancing the block. Their explanation was something about the weird pushrod angles on smallblocks.

- - - Updated - - -

Yes, I go them directly fom competition along with the 268 roller camshaft and matching lifters. It threw me for loop two as I have installed several in big blocks and it just didn't look right. I read their document and even called them about it. Problem I had with it was it required clearancing the block. Their explanation was something about the weird pushrod angles on smallblocks.

http://www.compcams.com/Instructions/Files/COMP4-140.pdf

 

[lewtot184]

small block tappet and push rod angle is very different from a big block.