[jonmachota78]

After 200mi I had a comp hydraulic roller lifter go bad. Comp sends me a new one and all is well for about 100mi and another one started hammering. So how many comp hyd rollers have gone bad on you?

[David Jones]

I installed mine in 2005. Lets say 2000 miles a year, so a conservative 14,000 plus miles. MANY of them pretty hard.

Last time I saw them was the day I put them in.

[jonmachota78]

I purchased mine October 2012.. can there be a bad batch?

[David Jones]

Hope not, I have an as yet unfired 455 that I just put some in.

[66bonne]

I've also had mine since 2005. THOUSANDS of street miles and track passes and still going strong. I've had these lifters in three different mottors.

Jim

[rad400]

Jon contact Sd Performance as they use alot of Comp cams maybe they can shed some light or talk to comp tech line.

[jonmachota78]

Comp is going to replace the entire set of lifters. Hopefully the new set works better.

[ta man]

I have a few years on mine.

[David Jones]

Originally Posted by jonmachota78

Comp is going to replace the entire set of lifters. Hopefully the new set works better.

That's outstanding. A pain in the butt for you though.....

[tripwr1964]

yeah got mine last fall too. just fired mine up couple days ago, for first time, about 10-15mins and still have 1 lifter that wont pump up. need to run it some more this weekend and see what happens. it's been cold here and i am running brad pen 30wt break-in oil... so hope it comes out of it! let you know tomorrow.

[old66tiger]

I run solids but I heard that with the hydraulic lifters you have to soak them in some sort of solvent first to get the preservative crap out of them before running them. Did you do that?

[David Jones]

Originally Posted by old66tiger

I run solids but I heard that with the hydraulic lifters you have to soak them in some sort of solvent first to get the preservative crap out of them before running them. Did you do that?

Mine spent the night in mineral spirits.

[GOAT WHORE]

6000 miles last year and good so far.

[tripwr1964]

Originally Posted by old66tiger

I run solids but I heard that with the hydraulic lifters you have to soak them in some sort of solvent first to get the preservative crap out of them before running them. Did you do that?

i did not.
the combo of break-in oil, cold weather, and the "preservative crap" probably isn't working in my favor.
SD recommends sea foam.
figure i'll try to warm it all up good one more time and see what happens.

[mrennie]

What is "sea foam"?

[tripwr1964]

Originally Posted by mrennie

What is "sea foam"?

from their web site:
Safely helps quiet noisy lifters, helps remove fuel deposits and oil residue, helps smooth rough idle. For Carburetors or Fuel Injected Gasoline Engines – Autos – Trucks – Tractors – Motorcycles – Marine – Small Engines – Industrial Engines Great for Diesel Engines Too!

assume it will aid in getting that "preservative" and excessive assembly lube out.

don't mean to distract from the thread. i am having a new engine issue w/ a lifter not pumping up. not calling this a failure.
just worried when i read all this fun stuff!

[chitownTA]

I also had forgotten to soak the lifters so I ended up with a couple that wouldn't pump. Pulled them out and sprayed some brake clean through and all better.

Only problem with my cam is me. I forgot to torque the retainer bolt down right causing issues.

Your valve springs too heavy?

[jonmachota78]

Originally Posted by old66tiger

I run solids but I heard that with the hydraulic lifters you have to soak them in some sort of solvent first to get the preservative crap out of them before running them. Did you do that?

I did soak mine in mineral spirits before I soaked them in oil. The Comp tech said that sometimes soaking them in mineral spirits is not enough.

Originally Posted by tripwr1964

SD recommends sea foam.

I tried the seafoam in the oil thing when the first one went bad but that did not work.

I also pulled the bad one out and ran 3/4 can of carb cleaner through it, reinstalled and then upon startup it pumped up nice for about 30 seconds then started hammering again...

My spring pressure is about 145lbs on the seat and 380lbs over the nose. Should be well within reason.

This is what the Comp tech said, and I think it depends on who talk to. The most common reason for this happening is when the lifters sit on the shelf for an extended period of time. the protective coating in the inside of the lifter hardens and causes binding issues with the internals. He asked if still have the box and what was the date on it. I wasn't home to look at the time but my lifter box is dated 9/18/12 (doesn't sound old to me but what do I know). When I asked him about soaking them in mineral spirits he said that is a good thing to do but sometimes is not enough. He also said that when one lifter does this, for whatever reason, they should all be replaced because when one goes bad the chances for another to go bad is higher and you should start with a clean slate. He also eluded to the fact that this could be caused by the lifter getting contaminated (dirty engine) but you could tell he was choosing words carefully as not to make an accusation. Also when a lifter does this, and the plunger bottoms out that it can damage the internals.

I think Comp has an excellent warranty department and I feel like they are taking care of me. In no way am I trying to slam them with this post, that is not my intent. I do however wish they had replace the whole set when the first lifter went bad so I would have to go through tearing the motor apart again. But that's where is depends on which tech you get. So if you get a bad one that gets replaced under warranty you may want to ask about replacing the set.

[tripwr1964]

i ran 9oz of seafoam and that eliminated the hammering in that stubborn lifter after about 15-20mins. next need to chg the oil and take it out and put some miles on it. see what happens.

[jonmachota78]

I thought I would provide an update. Comp provided me with a whole new set of lifters under warranty . I installed them with 1/2 turn preload and now after about 600 mi everything if great. Valvetrain is very quiet, more so than my old hyd flat cams. I couldn't be happier with it now. Took some doing to get here, I just hope it stays this a way!! Jon