Yet another lifter question...

[Chett]

Mr Jay I was reading the other thread about the LS-series lifter problems and it sounds similar to mine. The problem child is a friends Buick GN. It has a Comp single pattern cam with 212 @ .050 and 512 lift also has Comp 853-12 hyd rollers. The oiling system is stock other than some minor be-burring. The problem is very noisy lifters. This is our second set thanks to a warranty job. I set the lifters to .025 preload with a dial caliper on a magnetic stand. Haven't cranked-em down yet, to see if it helps. Do you think the Morrel lifters would help my situation? Any kind thoughts would be much appreciated.

[Jay Allen]

Mr Jay I was reading the other thread about the LS-series lifter problems and it sounds similar to mine. The problem child is a friends Buick GN. It has a Comp single pattern cam with 212 @ .050 and 512 lift also has Comp 853-12 hyd rollers. The oiling system is stock other than some minor be-burring. The problem is very noisy lifters. This is our second set thanks to a warranty job. I set the lifters to .025 preload with a dial caliper on a magnetic stand. Haven't cranked-em down yet, to see if it helps. Do you think the Morrel lifters would help my situation? Any kind thoughts would be much appreciated.
Those V-6 Buicks are horrible when it comes to oiling. I have had no luck getting hyd lifters to keep quiet in those things. Ever think about taking them apart and shimming the lifter?

[Chett]

Didn't think of that, never had hyd. lifter problems before. I'll give it a shot, how much would you shim them? .060 or is that too much? Thanks for the reply aswell

[Jay Allen]

Didn't think of that, never had hyd. lifter problems before. I'll give it a shot, how much would you shim them? .060 or is that too much? Thanks for the reply aswell
On the hyd roller stuff, I shim the lifter so it has .025" of movement. From no load until full compression. Then I preload the lifter about .010". Figure .006" for heat (like lash if you will) and you are at .016" (+/-) leaving only .009" (again +/-) for hyd action. That may do the trick.

Now if it eats itself alive (because of the oiling issues) I really don't want ya pissed off at me.......

[Chett]

Thanks Jay, I'll give it a try and we won't worry too much if it blows up I want him to buck up for a nice short block any-way. Besides it would be one hell of a road trip, and I'd forgive ya before I got half way anyhow!

[julven]

Jay, what do you use to shim the lifters? Do you have a dummies guide to doing this? My 98 model OE Hyd roller sbc has a light tap and I have thought about stretching the spring to see if that would help out but I am sure that is not the best way. The no load you talk about is that resting against the snap ring? I have it down right now so we were going to try something. Thanks Jason

I was going to quote this part but I don't see where I can so this is from above.

On the hyd roller stuff, I shim the lifter so it has .025" of movement. From no load until full compression. Then I preload the lifter about .010". Figure .006" for heat (like lash if you will) and you are at .016" (+/-) leaving only .009" (again +/-) for hyd action. That may do the trick.

Now if it eats itself alive (because of the oiling issues) I really don't want ya pissed off at me.......

[Jay Allen]

Now if it eats itself alive (because of the oiling issues) I really don't want ya pissed off at me.......
If it eats itself, you are on your own.......

The .010" is where I'd set it HOT. Thus cold will be about (+/-) .004" preload. Start with .050" of travel and see where it goes.

As far as what shims do I use. I go to a hardware with calipers in hand. Use a washer. Find one that is close to the desired thickness. Then turn the O.D. down to fit.

Good Luck.......

[julven]

Thanks Jay!