Kudos to Comp regrading backing up the lifter problem
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From: Pettis Performance 565 with two stages of Nitrous Supply nitrous 1.082, 4.61 at 155, 7.17 at 192
Kudos to Comp regrading backing up the lifter problem
Comp has a agreed to replace the lifters with new standard roller style, pay for shipping, and make up for the differance in cost. I will continue to use their products.
They also confirmended the problems with the Endurex lifter.
They also confirmended the problems with the Endurex lifter.
Burning Brakes
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From: Middletown N.Y.
Re: Kudos to Comp regrading backing up the lifter problem (69 N.O.X. RATT)
Does this have anything to do with hydraulic roller lifters for small block chevy? I'v been waiting for months for a set!
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From: Pettis Performance 565 with two stages of Nitrous Supply nitrous 1.082, 4.61 at 155, 7.17 at 192
Re: Kudos to Comp regrading backing up the lifter problem (JUAN J SANCHEZ)
No, I far as I have ever heard there is no problem with the hydraulic rollers.
Melting Slicks
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Re: Kudos to Comp regrading backing up the lifter problem (JUAN J SANCHEZ)
Does this have anything to do with hydraulic roller lifters for small block chevy? I'v been waiting for months for a set!
It took me about 5 1/2 weeks to receive a set of retro roller rockers for my 383 buildup.
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Re: Kudos to Comp regrading backing up the lifter problem (85vet)
Great news on Comp's handling of the issue. I know when I talked to them a couple of years ago about them, I got a real bad feeling. Seemed more of a marketing ploy than a genuine innovation.
They said if I ran low lift, low spring pressure roller they would live forever. That's cool, but the whole point of a performance roller is to have faster valve action and the ability to achieve high lift without excessive wear. Kind of defeats the purpose. I wanted a "weenie" cam I'd put in a regular solid flat tappet and go forever! I could install a good long lasting flat tappet that would spank that little roller all over the place.
Hopefully, someday we will have a roller setup that canlive a long time in HD applications. I guess it's Shubecks otherwise. Anyone running them yet?
JIM
They said if I ran low lift, low spring pressure roller they would live forever. That's cool, but the whole point of a performance roller is to have faster valve action and the ability to achieve high lift without excessive wear. Kind of defeats the purpose. I wanted a "weenie" cam I'd put in a regular solid flat tappet and go forever! I could install a good long lasting flat tappet that would spank that little roller all over the place.
Hopefully, someday we will have a roller setup that canlive a long time in HD applications. I guess it's Shubecks otherwise. Anyone running them yet?
JIM
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Re: Kudos to Comp regrading backing up the lifter problem (427Hotrod)
Hey Jim, all the generous time and help you have given me I can't understand why you didn't tell me I was using a "weenie" can. How could you? Just kidding Jim. Been meaning to e-mail you with a couple more questions. Happy New Year and I hope all is well. Bill. :seeya
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Re: Kudos to Comp regrading backing up the lifter problem (69ttop502)
Oh yeah........I've been meaning to tell you.........
You're OK.......In fact perfect......for the type of cam you need, it would be useless to spend the money to run a smaller street roller. The performance you are seeking is available in a dead reliable flat tappet.
That's what I meant....Comp would have you install a cam mild enough to make their Endurex rollers live. Kind of seems backwards to me?
I know you were just picking on me....sometimes I speak in language that other folks might take negatively!
Good luck with your project!
JIM
You're OK.......In fact perfect......for the type of cam you need, it would be useless to spend the money to run a smaller street roller. The performance you are seeking is available in a dead reliable flat tappet.
That's what I meant....Comp would have you install a cam mild enough to make their Endurex rollers live. Kind of seems backwards to me?
I know you were just picking on me....sometimes I speak in language that other folks might take negatively!
Good luck with your project!
JIM
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From: Pettis Performance 565 with two stages of Nitrous Supply nitrous 1.082, 4.61 at 155, 7.17 at 192
Re: Kudos to Comp regrading backing up the lifter problem (427Hotrod)
Jim:
I agree there is no reason to run a solid roller on the street unless you are trying to squeeze the last little bit of your motor. Or if the motor is so big a solid flat tappet will not provide enough valve lift to compliment the big motor.
My last solid roller would get its butt kicked by an aggressive solid flat tappet. The one I have now is a pretty aggressive roller, hard to match with a streetable flat tappet.
I agree there is no reason to run a solid roller on the street unless you are trying to squeeze the last little bit of your motor. Or if the motor is so big a solid flat tappet will not provide enough valve lift to compliment the big motor.
My last solid roller would get its butt kicked by an aggressive solid flat tappet. The one I have now is a pretty aggressive roller, hard to match with a streetable flat tappet.
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Re: Kudos to Comp regrading backing up the lifter problem (69 N.O.X. RATT)
Jim and 69 N.O.X. I know this is little off the subject but I was wondering if either of are familiar with the Schubeck lifters and cams. They are the composites that don't need break in and you can run roller type profiles without the rollers. The reason I ask is I came across an article on them in a year old magazine and wondered what someone with alot of knowledge and experience thought of the idea, if its an up and coming idea or not. Would seem to be an advantage if you could get the samp ramp profiles without having to worry about the rollers. I would be interested to hear what you think of them. I have never heard of anyone actually running one though. Bill.
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From: Pettis Performance 565 with two stages of Nitrous Supply nitrous 1.082, 4.61 at 155, 7.17 at 192
Re: Kudos to Comp regrading backing up the lifter problem (69ttop502)
I have not heard enough about them to have much of an opinion. Nobody I know uses them. They sound like a promising idea
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Re: Kudos to Comp regrading backing up the lifter problem (69 N.O.X. RATT)
I don't know of anyone personally that runs them yet either. I think they hold real promise, but there are some issues. I'm eagerly waiting for the composite market to really take off and become affordable in the racing business. Can you imagine the killer lightweight stuff you could get?
Of course price is one issue...the first price I heard was in the $900 range for the lifters plus the cam has to be coated with a special process to run them too they said. I'm really not sure if you can have any cam coated or if you have to use a Shubeck proprietary deal. If so, I would guess choices might still be narrow.
IF they really hold up, the savings would pay for itself over the long run.
I guess I need to do some more homework!!!
JIM
Of course price is one issue...the first price I heard was in the $900 range for the lifters plus the cam has to be coated with a special process to run them too they said. I'm really not sure if you can have any cam coated or if you have to use a Shubeck proprietary deal. If so, I would guess choices might still be narrow.
IF they really hold up, the savings would pay for itself over the long run.
I guess I need to do some more homework!!!
JIM
Drifting
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From: Wylie TX
Re: Kudos to Comp regrading backing up the lifter problem (69 N.O.X. RATT)
Comp has a agreed to replace the lifters with new standard roller style, pay for shipping, and make up for the differance in cost. I will continue to use their products.
They also confirmended the problems with the Endurex lifter.
They also confirmended the problems with the Endurex lifter.
I have one of their street roller cams (236/242 @.050) with the Endure-X lifters (888-16). This is in my good weather daily driven '69 and I've put 15k miles on this combo with no problems. I may pull my intake this weekend just to take a look.
As far as no reason to run a street roller, what is the disadvantage of solid street roller over a hyd roller (other than setting the lash)? The solids have slightly more agressive lobes than their hyd rollers while still allowing relatively light spring pressures.
I also don't understand how the hyd roller lifter can last forever while the solid ones can't.
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From: Pettis Performance 565 with two stages of Nitrous Supply nitrous 1.082, 4.61 at 155, 7.17 at 192
Re: Kudos to Comp regrading backing up the lifter problem (BeaterShark)
Beatershark: You bring up some good points regarding selling a product that is having problems. Their argument would be we have guys like beatershark that have gone 15,000 miles on theses lifters, there is nothing wrong with them, get lost.
As far as no problems, are you running a small or big block, I am curiuos becasue I have not heard any problems with small blocks.
Hydraulics last longer because they are not subjected to the ramp opening rates of a solid roller and more importantly the hydraulics get oil down to the critical parts to lubricate them, the thing that killers solid rollers is lack of oil to the whell bearing and out wheel assembly.
The drawback to run a solid roller on the street is when one lets go, sometimes it will cause several thousand $ before you shut the mototr down. They do not allow for light spring pressures, they demand high spring pressures, this of couse is dependant on the lift, ramp rates, durations, rpm, etc. But as a rule the higher lift, rpm, etc, you must run high spring pressures. In most motors a hydraulic roller will make within a few % of the solid roller.
As far as no problems, are you running a small or big block, I am curiuos becasue I have not heard any problems with small blocks.
Hydraulics last longer because they are not subjected to the ramp opening rates of a solid roller and more importantly the hydraulics get oil down to the critical parts to lubricate them, the thing that killers solid rollers is lack of oil to the whell bearing and out wheel assembly.
The drawback to run a solid roller on the street is when one lets go, sometimes it will cause several thousand $ before you shut the mototr down. They do not allow for light spring pressures, they demand high spring pressures, this of couse is dependant on the lift, ramp rates, durations, rpm, etc. But as a rule the higher lift, rpm, etc, you must run high spring pressures. In most motors a hydraulic roller will make within a few % of the solid roller.
Drifting
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From: Wylie TX
Re: Kudos to Comp regrading backing up the lifter problem (69 N.O.X. RATT)
Beatershark: You bring up some good points regarding selling a product that is having problems. Their argument would be we have guys like beatershark that have gone 15,000 miles on theses lifters, there is nothing wrong with them, get lost.
As far as no problems, are you running a small or big block, I am curiuos becasue I have not heard any problems with small blocks.
Hydraulics last longer because they are not subjected to the ramp opening rates of a solid roller and more importantly the hydraulics get oil down to the critical parts to lubricate them, the thing that killers solid rollers is lack of oil to the whell bearing and out wheel assembly.
The drawback to run a solid roller on the street is when one lets go, sometimes it will cause several thousand $ before you shut the mototr down.
They do not allow for light spring pressures, they demand high spring pressures, this of couse is dependant on the lift, ramp rates, durations, rpm, etc. But as a rule the higher lift, rpm, etc, you must run high spring pressures. In most motors a hydraulic roller will make within a few % of the solid roller.
[Modified by BeaterShark, 5:10 PM 1/13/2003]
