I like the larger oil hole in the 2148. That has to be of some help.

 

If I had not had seat pressure over 130 lbs or not reving past 6500 as Dave Ewert recommended, I would have used the LS7 lifter and not the 2148 SE as the LS7 allows a bit more Lattitude setting up with preload, but I would make sure they were real LS7 lifter or be sure of equivalent.
My previous cam was .551 lift and designed to work with blue LS6 springs which are only 90 lbs (stock is about 70 lbs) on seat.

If I used the 2148 SE on those springs it would be like using shock absorber for a truck on a mini.

I only wanted to run dual springs to lessen the chance of dropping a valve in a new engine, not for performance primarily.

 

A follow up as my 6.2 in the Vette is finally running.

I went through the preload measurements. They say .020-.040”. I came up with .050” with my pushrods. I have YT rockers and was running 7.450”.
So I called it good. Off by .010” didn’t seem to be an issue.

Fired it up last week, valve train sounded horrible! Put my hand on the valve covers, they were wiggling. Oops.

Rockers were hitting the coil mount bosses in the LS3 covers.

A little dremel action, and it’s happy. Valve train has never been this quiet.

Should also add, I replaced the springs with PAC 1207x which are 430lbs over the nose. A bit stronger than the AFR PAC springs that were dead.

 

So you went with the hylift 2148SE , which Yella terra are you running with this ?

 

The latest version of the 6645

 

Hello,
I have waited until I put Synthetic back in for a review!
After my OVH with a new Cam Motion cam and the High lift A-2148SE lifters, I was disappointed with the valve train noise. Using conventional Havoline 10-30 oil for break in, and even tried some Running's brand Harvest 5-30 and the for the last 500 miles back to the Havoline 10-30. I had collapsed lifters sound on the first cold start up of each day. I checked the pre-load twice--- which was about .040"--was aiming for .030". When warmed up the valve train was silent. Until a few days ago when a light tick remained when warm. The break in period was 1000 miles. I was about to pull the valve covers off and check for loose rockers. The oil was still clean with no gasoline in it.
So thanks to Darth_V8r----------
I have always ran Moble 1, but I gave Castol edge titanium 5-40 a try. Startup is now quiet, also when the engine is warmed up! Even the exhaust - header noise is good.
With a .040" over bore, flat top pistons, decked block and milled heads I have about 10.7 CR. [Did some relief chamber work on the intake side] It sounds like a little diesel in a good way.
So if things change I will again have a update.

 

There are quite a number of things that can cause abnormal valve train noise.
​​​​​​Mine ​​ticks and is quite noticeable when cold and barely noticeable when warm with my 2148 se lifters.
I have gentle ramp closing speed on exhaust which helps.

 

Now::::
After a few good cold starts, now a quite noticeable tick when cold then it gets quiet when warmed up, again! Not as bad as with conventional oil but still annoying.
45-50 lbs of oil pressure at idle, that has been the case since new.

 

You could post a video.
Mine rattle for just a couple of seconds at cold start. 10W-30 Redline oil.

 

That's what I was thinking too, a video would be a good idea.
​​​​​​One of my 2148 SE lifters was harder to push the plunger in by hand than all the others but I still used it.

 

I'm up to about 3000 miles on new engine with these lifters and have no problems.

 

http://www.facebook.com/mark.hoechst/videos/1819972251510815/Hello,

Back to the topic of the Hylift Johnson lifters-----------and the long-awaited video.

Here are some specs on my engine overhaul to get rid of the old cold start piston slap.

I ended up with quiet pistons but collapsed lifter noise with each cold start ups and a slight lifter tick

when warm. Put in GM SBC Direct Shot High Performance Roller Lifters Chevy Hylift Johnson 2148SE.

The lifter bores are good.



Build specs:

Manton custom push rods with .035”-.040” lifter preload, checked 3 times after overhaul.

Cam Motion, with soft closing ramps, Intake lift .571” Exhaust .562”

Stock rockers with about 30000 miles on them

Pac 1215 springs with a max .600” lift, Installed height 1.760” pressure 113, Posted Coil bind height

1.140”, actual stick it in a vice closed height much more------ around 1.200” [edit more like 1.040"]

Intake lift .571” -1.140” coil bind leaves .048” clearance, pressure about 294

Exhaust lift .562” -1.140” coil bind leaves .058”clearance, pressure about 294

I know that the installed height is .040” less than stock increasing the pressure slightly, but it less than

most springs put in. The posted coil bind of 1.140” is way less than actual measured coil bind.



Question? With a max .600” lift and the installed height of 1.760” [ not the 1.800” height, -1.140” coil

bind] intake lift of .572” with rocker ratio of 1.7, does that give me about +.008” left to the max .600”

lift? Could that be the problem?



Break in oil, less on warm days but with the noisy cold start lifter noise.

Used regular Havoline 10-30 for break in oil. Tried a farm fleet 5W-30 oil to quiet lifters. Tried Havoline

with a can of STP for a few hundred miles. After break put in Castrol Edge Titanium 5W-40. Lifters were

quiet on the first start after the oil change, but then the noise came back.



I called the seller of the lifters, he thought dirty lifters and he mentioned the spring Coil Bind.

So, I pulled the heads and checked the lifters, they were all clean with no debris. I noticed that the

fatter push rods were slightly rubbing on the bottom of the heads. The heads where milled .030”

and I decked the block, so the pistons came up .005” above the deck. So, I drilled and grinded the intake

push rod holes for clearance.



On a cold start up:

The tick various being on the left or right side, sometimes both. When it is bad it sounds like a fresh

rebuild with no oil in the lifters and quiets down after the temperature gets to 195 degrees, [with a

small tick or two]. When the oil gets hot the tick-ticks increase somewhat.



Always had good oil pressure from new. The gauge reads the same after the overhaul. 84000 miles

when rebuilt. Ran Mobli-1 10-30 oil until the overhaul and the engine was clean with no sludge.



The 1st video is a cold start up, the noise is best heard under the motor by the header pipes.

The 2nd video is after warming up to 195 degrees.

So, thanks for reading this page. Any suggestions?

Just click on the links, they should work!






https://www.dropbox.com/s/zsq6m66ks0...start.MOV?dl=0

https://www.dropbox.com/s/f8gxwyg50mw53ww/warm.MOV?dl=0

 

Since I'm also using those springs I plugged your numbers into my spreadsheet (there's also a calculator on the PAC website). You're .048 from coil bind at .572 lift. At .580 lift you'd still be .040 from coil bind. I'm no expert but I think that's pushing it. I'm currently running .040 from coil bind, with a very noisy valvetrain. I'm going to different springs, but I think in my case it's the lifters that's causing the noise - mine is pretty quiet when cold, then gets noisy when warmed up. I had replaced the stock LS1 lifters with Delphi "gen V" lifters from BTR, and will probably be replacing those after only 2K miles on a newly built engine.

 

I must have had coil bind with my previous BTR stage 3 truck cam in my LS1. The cam had .553 lift and was designed to use the LS6 springs. I emailed the vender and they assured me I would not need to check clearances as it was designed as a straight swap in place of my stock cam with the new LS6 springs. The engine was in good condition stock with 100,00 miles approx.

Regardless I checked the coil bind with the new BTR cam and I had a little under 0.040 clearance. I ran the cam for about a year with no problem and then removed it for a rebuild and found two damaged lifters here is one in photo. There is also another story on the net like this but worse of an Isky cam designed to run the LS6 springs with a little over .562 lift, in that particular case it ruined the valve train/engine.

I cant remember exactly what spring clearance I had with my BTR cam but it was just under the acceptable limit, around 0.040 I recall.

I know your running better springs than the LS6 springs.

 

How did you check the valve height? Was it accurate?

 

Hello TimLS1,
I found some spec for the LS6 springs, 90/280 pounds pressure, Coil Bind at 1.16, Max lift of .570"
I ran for about 50,000 miles LS6 springs on my old Comp cam, with the heavy 1.75 ratio roller rockers which gave me max lift of .574" and .5775"!
I remember that the installed height was more than 1.800" but did not write it down. But I did not have have problem. Bee hive springs like to run closer to coil bind. Years ago it was said they were good for .600" lift, but I can not find where that was said.
What do you have your rev limit set at? I was running only 6000 rpms. If you were running a higher limit I could see damage from that with the LS6 spring but I am no expert.

On my current noisy cold start up problem, I think I do not have enough preload. The store i bought them said they should have .040" preload and I am at .035" to .040".
I used a Comp adjustable push rod and added .035". Because another poster said he was told .030" preload. Another one said he was running .050' and they were quiet.
I have checked with a dial indicator on the push rod end of the rocker to check the preload.

I have an extra set of rocker pivot supports so I plan to mill them down .015" before I buy another set of pushrods. That should give me a bit more preload and screw up my geometry! For a little while anyway.
If any one has any insight what milling the rocker supports .015" would do, let me know.
I think that lifters cause the most grief in LS engines.

 

Rev limit was at 6300, but I only reved it to 6000 a few times.
I'm glad someone has run them at higher lift safely. 0.600 is too much for them.

 

I think .600" is too high for them also. My new cam is a small duration that peaks at 6300, so on my new tune I have it set at 6200.
Going for low grunt and is working well. Hope you get your valve train quieted down.

 

I went with the Johnson 2110 Slow leakdown lifters in my new build. Bad luck with Comp and the LS7 lifters I had are what let go, making me rebuild the motor. I looked into The Hylift lifters and almost pulled the trigger but the more I read up, the more I knew they would not work in my build. They seem to be about the same as the LS7 lifters in performance for the most part. I was going higher lift and have preaty heavy springs. These are not up to the task.

Do yourself a favor and get the 2110s if you are spinning over 6000 and have more than 570 lift. about double the price but seeing as i have had 2 motors go because of lifters... it makes sense. it is pretty much the weak link in these motors

 

Hello, thanks for your comments,
After talking to the seller of the Hylifts and reading "patss/00" post , I took out the .060" locators and the .015' shim to give me a installed height of 1.795" using the Top Hat OE type seals. OE height is 1.800". Ended up with about .078" distance to spec. coil bind which is 1.140". I corrected the the max coil bind height [bench vice tightening] to 1.040" in the early post.
Start up noise is the same but maybe a little better sound when at operating temps. Just a little tick now and then. Which is livable.
The rev limit is set at 6200 rpms, low duration cam runs out at 6300. Good torque at highway cruising speeds.