First look....new LSX lifters
First look....new LSX lifters For some people, sanity comes in a bottle or a pill. For me, sanity comes in the form of $560.00 US Mail deliveries! 
As some of you might know, I've been fighting the dreaded "sewing machine from hell" noise on my daily driver. It had a couple lifters rattling from day one.....now....3k miles later... they scream in near-unison. Oil pressure is fine. I've tried EVERYTHING to make it right...triple-checked spring pressures, 4 different viscosity oils, 2 different preloads...no dice. It just keeps friggin' rattling!
So today, a little light at the end of the tunnel;
Pictures don't really do them justice....even though it's "just" a lifter set. They really appear to be a nice product. I realize that they're not anything as fancy as a link-bar setup (they offer those too), but I guess I'm just excited to share what I believe to be the solution to my daily frustration and high blood pressure.
At the manufacturer's request, I'm currently unable to mention them by name. That should change shortly. I can tell you, however, that these carry a LIFETIME warranty...and are made right here in the USA.
Also, customer service with these folks was the best...and I mean THE BEST! Great folks to talk to, and VERY helpful. If the product is as good as everything else they've done for me so far, then they've just gained one very happy loyal customer.
I'll be documenting the "before and after" removal/replacement of the Z06 cam and faulty LS7 lifters once EPS ships my new cam and springs in the next few weeks......stay tuned!
As some of you might know, I've been fighting the dreaded "sewing machine from hell" noise on my daily driver. It had a couple lifters rattling from day one.....now....3k miles later... they scream in near-unison. Oil pressure is fine. I've tried EVERYTHING to make it right...triple-checked spring pressures, 4 different viscosity oils, 2 different preloads...no dice. It just keeps friggin' rattling!
So today, a little light at the end of the tunnel;
Pictures don't really do them justice....even though it's "just" a lifter set. They really appear to be a nice product. I realize that they're not anything as fancy as a link-bar setup (they offer those too), but I guess I'm just excited to share what I believe to be the solution to my daily frustration and high blood pressure.
At the manufacturer's request, I'm currently unable to mention them by name. That should change shortly. I can tell you, however, that these carry a LIFETIME warranty...and are made right here in the USA.
Also, customer service with these folks was the best...and I mean THE BEST! Great folks to talk to, and VERY helpful. If the product is as good as everything else they've done for me so far, then they've just gained one very happy loyal customer. I'll be documenting the "before and after" removal/replacement of the Z06 cam and faulty LS7 lifters once EPS ships my new cam and springs in the next few weeks......stay tuned!
Last edited by 1slow01Z71; Mar 4, 2012 at 07:41 PM. Reason: fixed pictures
To clarify, you've been fighting LS7 lifter noise with just a Z06 cam? That's interesting because it seems that most people that have problems with LS7 lifter noise are running larger cams with more aggressive ramp rates/profiles. This is the first I've really read of problems with such a small cam with LS7 lifters.
I ran the dreaded Comp R lifters with a TREX V2 heads/cam setup, and it was much quieter than stock...virtually no valvetrain noise at all. Its all about getting the preload right. I had PRC dual platinums (.670" lift), the preload was at .020" which was within Comps specs for those lifters.
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On The Tree
Joined: Dec 2004
Posts: 124
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From: Northville, Michigan
For some people, sanity comes in a bottle or a pill. For me, sanity comes in the form of $560.00 US Mail deliveries!
Pictures don't really do them justice....even though it's "just" a lifter set. They really appear to be a nice product. I realize that they're not anything as fancy as a link-bar setup (they offer those too), but I guess I'm just excited to share what I believe to be the solution to my daily frustration and high blood pressure.
Pictures don't really do them justice....even though it's "just" a lifter set. They really appear to be a nice product. I realize that they're not anything as fancy as a link-bar setup (they offer those too), but I guess I'm just excited to share what I believe to be the solution to my daily frustration and high blood pressure.
Did you consider the COMP short-travel, link bar lifters - 15956-16 for ~ $555 from Summit Racing?
These would allow you to get rid of the plastic lifter trays that are not benefical for oil drain back.
-
Last edited by Pumba; Mar 4, 2012 at 12:14 PM.
And for those that think my problems are related to installation....think again. The current set was installed @.080 (gm spec)...then changed to .050 to try to allow a little more "cushion". The problem remains, and is getting worse daily.
Last edited by salemetro; Mar 4, 2012 at 12:41 PM.
To clarify, you've been fighting LS7 lifter noise with just a Z06 cam? That's interesting because it seems that most people that have problems with LS7 lifter noise are running larger cams with more aggressive ramp rates/profiles. This is the first I've really read of problems with such a small cam with LS7 lifters.
I ran the dreaded Comp R lifters with a TREX V2 heads/cam setup, and it was much quieter than stock...virtually no valvetrain noise at all. Its all about getting the preload right. I had PRC dual platinums (.670" lift), the preload was at .020" which was within Comps specs for those lifters.
COMP Cams® Pro Magnum Hydraulic Roller Lifters™ are specifically designed to perform at higher engine speeds. When engines are equipped with a hydraulic camshaft, high rpm is limited by the improper position of the internal piston as the lifter inevitably "pumps up". This improper location results in open valves and therefore leads to lost power or sometimes even engine failure. NOTE: These lifters require an adjustable valve train (check here for adjustable valve train components), and must be pre-loaded to .002" to .004" for proper operation!
Counter productive to the function of the hydraulic lifter....unless you want, in effect, a solid lifter.
From the manufacturer of the new lifters....just in case people are curious;
Set preload in the .036-.056 range. These have less travel than LS7's, but still have a pretty open window for preload.
From the manufacturer of the new lifters....just in case people are curious;
Set preload in the .036-.056 range. These have less travel than LS7's, but still have a pretty open window for preload.
