Hi all,
I recently posted re inspecting solid roller lifters. Following the advice offered I am leaning towards replacing my lifters as I am uncertain of their age or history , and of my ability to assess them properly.
So after searching and reading here as much as I could I have narrowed down my choice to comp cams 96829-16 . Some of my engine info.
Bracket motor turns 6800
Springs are 250 on the seat . Spring rate listed as 545. ( I hear the term over the nose often, is the spec spring rate the same or is it something measure after install ?)
Lifter bores are unbushed
Do not need pr oiling (lifter spec says they are , but read a post by Andy F , said he bought a set and they were not)
Anybody using these for awhile ? They are in my budget and says they are rebuildable. Seem like a decent deal.
Thanks in advance, G

All I wish to add is that pressurized oil to the needles is a very good thing.

Comp has done away with the lifter rebuild program.

Spring “rate” refers to the change in load over distance....... usually lbs/in.

So, 545 would mean a change of 545lbs in one inch.
If you know the load with the valve closed, and the net max lift at the valve, you can calculate the theoretical open load.

Example, 220 closed and .685 lift.
545 x.685 = 373.3, add in the 220 = 593.3 open load.

I have been very happy with Isky Red Zones over the years. They cost a bit more but IMO it is worth it in the end. I have never had a failure with them, even in my Camaro street car Having said that I have used the Comp solid body lifters in mild applications with decent success.

I talked to Chris Mayes @ the PRI. He told me they are going to continue the rebuild program for .904 dia. lifters. You might want to look into that.

What block are you using? If it is a stock unbushed block I wouldn't recommend them due to oil control. One problem I did have with them in a stock 400 block was the #2 and #4 cylinders on my engine poured oil out at max lift. Couple that with the fact that you are pressure feeding the rollers and IMO you need to have a bushed block to limit oil loss at the lifters. I got by with it last year but am having the block bushed right now.

I am just wondering how many runs a yr you make and what oil you will be using?

I had that conversation yesterday.
They will continue with the Mopar lifters until the current supply of parts(axles, bearings, wheels) are depleted.

Well, that's not exactly good news...part of my service strategy just went out the window.

Interesting, I was concerned I might have that issue so I primed the engine with the valley open. I have those lifters in my 440 with .650 lift and didn't have that issue.So those results vary. My oil pressure is pretty stable in the car, only drove around town a handful of times though.

Sucks comp won't rebuild lifters in the future. I hope the lifters are tough, they look nice and I like the oil to the needles.

Off the top of my head I can think of two customers running the Sportsman lifters in stock 440 blocks with no problems, in motors that see regular street duty.

Dwayne, That’s soon to be 3 customers in about another month or so. Steve’s 505. Only dyno time up to this time now.

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Interesting, I was concerned I might have that issue so I primed the engine with the valley open. I have those lifters in my 440 with .650 lift and didn't have that issue.So those results vary. My oil pressure is pretty stable in the car, only drove around town a handful of times though.

Sucks comp won't rebuild lifters in the future. I hope the lifters are tough, they look nice and I like the oil to the needles. [/quote]

.730 lift is what I have. They also dump a ton of oil out the feed holes to the rollers and that might be OK for some situations but not good in others.

Thank you for the explanation and the formula. Greatly appreciated

Al thanks for the advice and I do agree but it’s just not in my budget this year .
I’m hoping it’s a solid plan to go with the comps and see if I can get them rebuilt every few years. I only put about 75 passes on it each season ,
G

I will give them a call thanks for the heads up.

I've been running the 829's in my 499 for the last 12 years. I've had a set rebuilt and replaced that set with new over that time period. No problems or failures in that time. My car runs low 10's and never sees 7000 rpm. Mild cam only .620 lift. fwiw

75 or so at most . Track is too far and life has other demands .
20/50 in the summer , 10/40 in cooler months.
Hot idle is about 40sh through the traps 60ish .

My lifter bores are unbushed, I run brad penn 20/50. Probably 150 passes a year and very little street miles lately. fwiw