Good stuff on roller lifters....
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Good stuff on roller lifters....
Guess I'm on Isky's mailing list cause I got this the other day. Thought the info was good enough to pass along to you guys.
You can find this tech article here , along with a few other tech articles.
-Mindgame
Roller Lifters: Keep 'Em Rolling Longer
Most racers are aware of the advantages of Roller Lifters. For those who are not, a brief review is in order. Roller Cams & Lifters are employed today in all-out racing engines where valve lift/area requirements preclude the possibility of employing a flat tappet (solid lifter cam). Higher Lift requires higher valve spring loads (pressures) and flat tappet cams can only handle so much. Additionally, increased rates of lift (cam lobe velocity) above .007" per degree for example on an .842" diameter G.M. lifter, would cause the lobe to reach-out over the edge of the lifters' cam face. Consequently, with either too much spring or too high a lift rate, most racers know that extremely radical flat tappet cams will eventually self-destruct.
But, what about Roller Lifters? Are they as indestructible as many believe? How do we prolong the life of their roller bearings in today's modern race only engines? Roller lifters require special care and maintenance if they are to provide good service life. Here are the 4 most important factors you should consider to insure their success.
1. AVOID DRY "START UP": Roller Lifter Bearings are assembled with a "tacky" rust-preventing grease that is not intended for lubrication. Therefore, new lifters should have their roller bearings thoroughly washed in clean solvent or acetone to completely remove this assembly grease. After air drying, premium motor-oil (non-synthetic) such as Penzoil SAE 25W50 GTP Racing Oil (The best of the mineral based oils) or Amzoil "Red" Racing Oil (synthetic) should be used to pre-lube the bearings just before installation.
2. AVOID "OVERLOAD": Increased load always means reduced service life. Want 50% more thrust from a jet engine? Ask Rolls Royce or G.E. and they'll tell you to expect about ¼th the service life between overhauls. Similarly, employing drag race valve springs in the 900, 1000 to 1100 lb. Range will reduce the life of your roller bearings between rebuilds much the same as will employing high-impact roller cam profiles.
3. EMPLOY A REV KIT WHEN POSSIBLE: The primary advantage of Camfather Ed Isky's invention of the 1950's is that by pre-loading each Roller Lifter Bearing to its respective cam lobe, you eliminate needle roller bearing "skew". Skewing (the momentary mis-alignment of the bearings' needle rollers to their respective races) is provoked by the start-stop skidding action of the roller bearings each time the lash is taken-up. Eliminate it and you extend roller bearing life dramatically! Unfortunately, many engines such as the Big Block Chevy which could use one the most, don't lend themselves to such an installation because of the severe angularity of the pushrod coming out of the lifter.
4. EMPLOY LIFTERS WITH "PRESSURE-FED" OIL TO THE NEEDLE ROLLER BEARINGS: Hope is a good thing. But hoping oil will eventually find its way to your Roller Lifter bearings is not. Unfortunately, most roller lifters on the market do not pressure feed oil to the needle rollers, depending on the "splash & a little luck" system instead. In contrast, all Isky Roller Lifters feature pressure fed oil to their roller bearings. Isky's Top of the line "Red Zone" Series lifters feature an exclusive 3-Point "Multi-Port" oiling system to constantly bathe the needle rollers with cooling lubrication. Additionally, they feature our famous Marathon Roller bearing with the toughest shock absorbing heavy duty outer bearing race on the market for the highest possible load carrying capability and sustained Hi-Rpm Endurance. And, they're fully rebuildable, making them your best long-term value!
Most racers are aware of the advantages of Roller Lifters. For those who are not, a brief review is in order. Roller Cams & Lifters are employed today in all-out racing engines where valve lift/area requirements preclude the possibility of employing a flat tappet (solid lifter cam). Higher Lift requires higher valve spring loads (pressures) and flat tappet cams can only handle so much. Additionally, increased rates of lift (cam lobe velocity) above .007" per degree for example on an .842" diameter G.M. lifter, would cause the lobe to reach-out over the edge of the lifters' cam face. Consequently, with either too much spring or too high a lift rate, most racers know that extremely radical flat tappet cams will eventually self-destruct.
But, what about Roller Lifters? Are they as indestructible as many believe? How do we prolong the life of their roller bearings in today's modern race only engines? Roller lifters require special care and maintenance if they are to provide good service life. Here are the 4 most important factors you should consider to insure their success.
1. AVOID DRY "START UP": Roller Lifter Bearings are assembled with a "tacky" rust-preventing grease that is not intended for lubrication. Therefore, new lifters should have their roller bearings thoroughly washed in clean solvent or acetone to completely remove this assembly grease. After air drying, premium motor-oil (non-synthetic) such as Penzoil SAE 25W50 GTP Racing Oil (The best of the mineral based oils) or Amzoil "Red" Racing Oil (synthetic) should be used to pre-lube the bearings just before installation.
2. AVOID "OVERLOAD": Increased load always means reduced service life. Want 50% more thrust from a jet engine? Ask Rolls Royce or G.E. and they'll tell you to expect about ¼th the service life between overhauls. Similarly, employing drag race valve springs in the 900, 1000 to 1100 lb. Range will reduce the life of your roller bearings between rebuilds much the same as will employing high-impact roller cam profiles.
3. EMPLOY A REV KIT WHEN POSSIBLE: The primary advantage of Camfather Ed Isky's invention of the 1950's is that by pre-loading each Roller Lifter Bearing to its respective cam lobe, you eliminate needle roller bearing "skew". Skewing (the momentary mis-alignment of the bearings' needle rollers to their respective races) is provoked by the start-stop skidding action of the roller bearings each time the lash is taken-up. Eliminate it and you extend roller bearing life dramatically! Unfortunately, many engines such as the Big Block Chevy which could use one the most, don't lend themselves to such an installation because of the severe angularity of the pushrod coming out of the lifter.
4. EMPLOY LIFTERS WITH "PRESSURE-FED" OIL TO THE NEEDLE ROLLER BEARINGS: Hope is a good thing. But hoping oil will eventually find its way to your Roller Lifter bearings is not. Unfortunately, most roller lifters on the market do not pressure feed oil to the needle rollers, depending on the "splash & a little luck" system instead. In contrast, all Isky Roller Lifters feature pressure fed oil to their roller bearings. Isky's Top of the line "Red Zone" Series lifters feature an exclusive 3-Point "Multi-Port" oiling system to constantly bathe the needle rollers with cooling lubrication. Additionally, they feature our famous Marathon Roller bearing with the toughest shock absorbing heavy duty outer bearing race on the market for the highest possible load carrying capability and sustained Hi-Rpm Endurance. And, they're fully rebuildable, making them your best long-term value!
-Mindgame
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Re: Good stuff on roller lifters....
I had not thought about that potential benifit of a rev kit, I had thought that with the lower spring pressures needed with beehives we were going to see the beginiing of the end for rev kits but this tells me they still offer some usefullness, probably limitecd in a street vehicle but interesting anyway.
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Re: Good stuff on roller lifters....
Yes, this is definitely biased towards the mechanical lifter but I have to wonder how many people don't at least know about the 1st part of step #1.... cleaning out the packing grease. 
The rev-kit is a good thing for even more reasons than listed here. I've known about the bearing loading for a long time but one thing I've experienced personally is how they will keep a lifter in the bore when something lets go. Keeps oil pressure up and reduces the chance of more damage from broken lifter shrapnel.
-Mindgame
The rev-kit is a good thing for even more reasons than listed here. I've known about the bearing loading for a long time but one thing I've experienced personally is how they will keep a lifter in the bore when something lets go. Keeps oil pressure up and reduces the chance of more damage from broken lifter shrapnel.
-Mindgame
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Re: Good stuff on roller lifters....
Hey Ryan,
I don't know that any one rev-kit is better than another but I've always used Isky. Not for any particular reason... just like Isky's stuff in general. They don't make anything for stock lifters though... AFR is the only one I know of. Nice piece but pricey. Not cast like some of the other brands so I guess you have to pay for that nice machine work.
Anyhow, I would steer anyone to AFR or Isky if they're in need of a good rev-kit.
-Mindgame
I don't know that any one rev-kit is better than another but I've always used Isky. Not for any particular reason... just like Isky's stuff in general. They don't make anything for stock lifters though... AFR is the only one I know of. Nice piece but pricey. Not cast like some of the other brands so I guess you have to pay for that nice machine work.
Anyhow, I would steer anyone to AFR or Isky if they're in need of a good rev-kit.
-Mindgame
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Re: Good stuff on roller lifters....
And part 2 discusses not to overload the lifters with 2 much spring pressure. HHMMM, so put the correct and not more for overkill. Springs do lose a little tension over time, but not 30 pounds within a few drag runs, lets say.
Last edited by vette40th; Apr 25, 2005 at 07:28 PM.
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Re: Good stuff on roller lifters....
vette40th,
You're the argumentative type... you a litigator or you just argue for fun? You're gonna like it around here I'm sure.
Yeah part 2 does say that. First trick is..... you have to know enough to know what "too much" is.
Oh.. they can lose 30 lbs in a few runs real easy. Seen em do just that on my drag cars, most of which were running better than 250 lbs seat. You haven't seen that and it's ok... comes with experience. You'll get there.
-Mindgame
You're the argumentative type... you a litigator or you just argue for fun? You're gonna like it around here I'm sure.
Yeah part 2 does say that. First trick is..... you have to know enough to know what "too much" is.
Oh.. they can lose 30 lbs in a few runs real easy. Seen em do just that on my drag cars, most of which were running better than 250 lbs seat. You haven't seen that and it's ok... comes with experience. You'll get there.
-Mindgame
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Re: Good stuff on roller lifters....
Mindgame, yes you can lose pressure on a few runs, esepecially if you over rev the crap out of it. 250# spring pressures are not for the faint of heart. and most people on this board dont even come close to running anything needing that.
Experience, well, 20 years of racing must be some kind of experince.
PS, I am in the Navy and have to deal with Officers in Driving a submarine safely, based on my experience in sound, etc. So yes, Iw ill argue the **** out of something if I feel the BS flag is up. And sometimes it is on this forum.
Big Cams, Big Injectors, Big Springs, when there not necessary for most of the apps here.
Experience, well, 20 years of racing must be some kind of experince.
PS, I am in the Navy and have to deal with Officers in Driving a submarine safely, based on my experience in sound, etc. So yes, Iw ill argue the **** out of something if I feel the BS flag is up. And sometimes it is on this forum.
Big Cams, Big Injectors, Big Springs, when there not necessary for most of the apps here.
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Re: Good stuff on roller lifters....
Originally Posted by vette40th
Mindgame, yes you can lose pressure on a few runs, esepecially if you over rev the crap out of it. 250# spring pressures are not for the faint of heart. and most people on this board dont even come close to running anything needing that.
Experience, well, 20 years of racing must be some kind of experince.
PS, I am in the Navy and have to deal with Officers in Driving a submarine safely, based on my experience in sound, etc. So yes, Iw ill argue the **** out of something if I feel the BS flag is up. And sometimes it is on this forum.
Big Cams, Big Injectors, Big Springs, when there not necessary for most of the apps here.
Experience, well, 20 years of racing must be some kind of experince.
PS, I am in the Navy and have to deal with Officers in Driving a submarine safely, based on my experience in sound, etc. So yes, Iw ill argue the **** out of something if I feel the BS flag is up. And sometimes it is on this forum.
Big Cams, Big Injectors, Big Springs, when there not necessary for most of the apps here.
My old man was an Air Force man of 32 years and I remember fondly his thoughts on many things. I was taught from an early age that there were two ways about doing anything.... the wrong way and the military way. Thank goodness I left for school and finally learned to think for myself.
I'll caution you to be careful with that BS flag. You'll find that some of us can back up our theories with plenty of experience. If you want to make an arguement against something then just make your case but also be prepared to prove it out. I don't run from debates because I think more good can come from them than bad, but I don't like the chicken little mentality some people have when dealing with things outside their comfort zone.
Things are changing and so are the ways people think about HP engines. If you're here to learn then you just might do that. If you've already made up your mind on everything.... well it's gonna be unpleasant. You read the article so I guess your one of those who wants to learn. So you have to ask yourself... "Who am I gonna learn from?". A little humility goes a long ways.
I like this board because there are alot of new ideas that come across. It's a real treat to have guys like Bret (SStrokerAce) who spends a lot of time talking to some of the best builders around about valvesprings, cams, new technologies, etc., pass that stuff on. You'll also find that people's opinions on valvespring pressures and valvetrain components in general has changed a great deal in the past five years.
"Don't knock it til ya try it" is a good phrase. I have no problems with people who've actually tried something to see if it will work for them. I DO have a problem with people who haven't but will sit back and tell everyone else they're wrong. Best to just post your experiences and let everyone else post there's because you won't find much love when you start questioning a persons own experiences. At least that's been my experience in the past 18 years managing people.
Good luck.
-Mindgame
Last edited by Mindgame; Apr 25, 2005 at 09:54 PM.
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Re: Good stuff on roller lifters....
Originally Posted by Mindgame
These weren't on over-reved runs but that's a story for another day.
My old man was an Air Force man of 32 years and I remember fondly his thoughts on many things. I was taught from an early age that there were two ways about doing anything.... the wrong way and the military way. Thank goodness I left for school and finally learned to think for myself.
I'll caution you to be careful with that BS flag. You'll find that some of us can back up our theories with plenty of experience. If you want to make an arguement against something then just make your case but also be prepared to prove it out. I don't run from debates because I think more good can come from them than bad, but I don't like the chicken little mentality some people have when dealing with things outside their comfort zone.
Things are changing and so are the ways people think about HP engines. If you're here to learn then you just might do that. If you've already made up your mind on everything.... well it's gonna be unpleasant. You read the article so I guess your one of those who wants to learn. So you have to ask yourself... "Who am I gonna learn from?". A little humility goes a long ways.
I like this board because there are alot of new ideas that come across. It's a real treat to have guys like Bret (SStrokerAce) who spends a lot of time talking to some of the best builders around about valvesprings, cams, new technologies, etc., pass that stuff on. You'll also find that people's opinions on valvespring pressures and valvetrain components in general has changed a great deal in the past five years.
"Don't knock it til ya try it" is a good phrase. I have no problems with people who've actually tried something to see if it will work for them. I DO have a problem with people who haven't but will sit back and tell everyone else they're wrong. Best to just post your experiences and let everyone else post there's because you won't find much love when you start questioning a persons own experiences. At least that's been my experience in the past 18 years managing people.
Good luck.
-Mindgame
My old man was an Air Force man of 32 years and I remember fondly his thoughts on many things. I was taught from an early age that there were two ways about doing anything.... the wrong way and the military way. Thank goodness I left for school and finally learned to think for myself.
I'll caution you to be careful with that BS flag. You'll find that some of us can back up our theories with plenty of experience. If you want to make an arguement against something then just make your case but also be prepared to prove it out. I don't run from debates because I think more good can come from them than bad, but I don't like the chicken little mentality some people have when dealing with things outside their comfort zone.
Things are changing and so are the ways people think about HP engines. If you're here to learn then you just might do that. If you've already made up your mind on everything.... well it's gonna be unpleasant. You read the article so I guess your one of those who wants to learn. So you have to ask yourself... "Who am I gonna learn from?". A little humility goes a long ways.
I like this board because there are alot of new ideas that come across. It's a real treat to have guys like Bret (SStrokerAce) who spends a lot of time talking to some of the best builders around about valvesprings, cams, new technologies, etc., pass that stuff on. You'll also find that people's opinions on valvespring pressures and valvetrain components in general has changed a great deal in the past five years.
"Don't knock it til ya try it" is a good phrase. I have no problems with people who've actually tried something to see if it will work for them. I DO have a problem with people who haven't but will sit back and tell everyone else they're wrong. Best to just post your experiences and let everyone else post there's because you won't find much love when you start questioning a persons own experiences. At least that's been my experience in the past 18 years managing people.
Good luck.
-Mindgame
But, freedom of speech is your right, and you are speaking what you think is right and of course it is your opinion.
You havent proven anything with any of your statements, now have you.
Has anyone on this forum seen you do soemthing and watch the progress? I doubt it.
Unless your Car, or mine , has been in a magazine, book or a referenced article, then none of us can prove anything, only say what we have read or seen from experience.
I am constantly in magazines, books, etc reading on things to update myself. On a submarine, I have lots of time to study things.
Well, enough of this, read your post and see how you would take it if someone put it towards you. You slammed/flamed me, and your maturity level shows.
Good luck on hiding behind the keyboardm aybe you could email or write some magazine and let them do an article on your experience and level of knowledge.
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Joined: Dec 1998
Posts: 1,301
From: DFdubya, Tx.
Re: Good stuff on roller lifters....
Well.. My car's been featured in a magazine ... And I'd certainly trust anything Mindgame has to say or comment on 
. He's been around the block enough, and has helped out enough CZ28.commers w/ his advice to be one of the most trusted and knowledgeable persons we have posting here 
.
JMO...
PS - I have and use an AFR rev kit
... And I'd certainly trust anything Mindgame has to say or comment on . He's been around the block enough, and has helped out enough CZ28.commers w/ his advice to be one of the most trusted and knowledgeable persons we have posting here .JMO...
PS - I have and use an AFR rev kit
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Re: Good stuff on roller lifters....
Good article MG it's being linked to another thread as we speak. Also big THANKS for the compliment..... having a addictive personality is a good thing when it comes to engines for me... might not be so good with the rest of my vices.
Vette,
If you take that as bad from MG, your badly mistaken.
If you read what he wrote from the 3rd paragraph on... that is AWESOME advice.... Take it or don't, my advice would be to take it or learn that all the hard way. Hell we both like a good arguement every once in a while, makes us actually care enough to prove our points and post lots of good information. Sometimes I know I'm a little to busy to do so.
Anyways IMHO:
I'm also the product of a Air Force Father and have spent my entire education being taught HOW to think, not WHAT to think. When you also get to work close to your father you still get the it's my way or the wrong way view. Most times his way is the right way, that's MOST times but not all of them. He still teaches the how to think method. The military promotes some of that both ways from what I have seen. My "brother" is a grunt in the Core and his views on what they do to you there give me some insight into that realm. I've seen enough to know I would have a hard time being ordered by someone else.
The best thing to do with MG is to run his name thru a search in LT1 and Advanced Tech..... He has done some things that LOTS of us have never seen. BTW I am friends with a lot of the better magazine writers out there, and MG could do a hell of a AWESOME job writing TECHNICAL magazine articles... I just have a feeling his daily grind pays him well enough not to worry about the extra cash. I still don't want to know what a 504 Cube SBC motor costs to run at 10,000rpm.... He's the man to ask if you want to know stuff like that.
Bret
Vette,
If you take that as bad from MG, your badly mistaken.
If you read what he wrote from the 3rd paragraph on... that is AWESOME advice.... Take it or don't, my advice would be to take it or learn that all the hard way. Hell we both like a good arguement every once in a while, makes us actually care enough to prove our points and post lots of good information. Sometimes I know I'm a little to busy to do so.
Anyways IMHO:
I'm also the product of a Air Force Father and have spent my entire education being taught HOW to think, not WHAT to think. When you also get to work close to your father you still get the it's my way or the wrong way view. Most times his way is the right way, that's MOST times but not all of them. He still teaches the how to think method. The military promotes some of that both ways from what I have seen. My "brother" is a grunt in the Core and his views on what they do to you there give me some insight into that realm. I've seen enough to know I would have a hard time being ordered by someone else.
The best thing to do with MG is to run his name thru a search in LT1 and Advanced Tech..... He has done some things that LOTS of us have never seen. BTW I am friends with a lot of the better magazine writers out there, and MG could do a hell of a AWESOME job writing TECHNICAL magazine articles... I just have a feeling his daily grind pays him well enough not to worry about the extra cash. I still don't want to know what a 504 Cube SBC motor costs to run at 10,000rpm.... He's the man to ask if you want to know stuff like that.
Bret
Last edited by SStrokerAce; Apr 25, 2005 at 11:02 PM.
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Re: Good stuff on roller lifters....
It's nice to read articulate posts (specifically those from MG and Bret in this thread). I suggest people read and think about what was said/posted before responding. Often, I find that viewpoints that are superfically contradictory are both correct when you fully explore the context. An example would be "how much spring pressure is too much". Unless you very specifically spell out the context, including details of the setup and the way it will be used as well as the users willingness/ability to spend money and or time inspecting, repairing, or fixing things you can get very different answers, both of which are "correct" for the different circumstances.
Bret and MG have alluded to things changing. One of the changes is how much money people have and are willing to spend on a hobby. A lot of us "old guys" remember back in the day when "hotrodding" wasn't ordering a bunch of new, expensive parts or even searching out a few bargains on eBay. It was combing through junkards finding stuff that was suitable for modification. Trying to go fast on a severly curtailed budget. You all know what a 383 was once, right? It was what you built from your motor by finding a junkyard 400 crank and truning the journals so you could use it in your block. Building one did not involve posting "who makes the best 383 stroker kit" on the board or asking "do I need billet 4-bolt caps" for my buildup.
Even though my financial istuation is a bit better than when I was making minimum wage, I still have that past and that is probably one reason I tend to be "conservative", trying for example to steer peiople away from 8,000rpm street motors. Racing tech has come to the street because people spend a lot more on their cars. But you still need to keep in mind that even with advances in materials, manufacturing, and design TINSTAAFL.
Be careful whose advice you accept, reject, argue with until you fully understand where they are coming from. Listen to people's experiences, not just what someone who is lacking in same read on the 'net. Try to understand where they are coming from so that you can put the statements in context.
And I still don't get the idea of 18 degree heads on the street!*
*But for some, that might be perfect, which is exactly my point.
Rich
Bret and MG have alluded to things changing. One of the changes is how much money people have and are willing to spend on a hobby. A lot of us "old guys" remember back in the day when "hotrodding" wasn't ordering a bunch of new, expensive parts or even searching out a few bargains on eBay. It was combing through junkards finding stuff that was suitable for modification. Trying to go fast on a severly curtailed budget. You all know what a 383 was once, right? It was what you built from your motor by finding a junkyard 400 crank and truning the journals so you could use it in your block. Building one did not involve posting "who makes the best 383 stroker kit" on the board or asking "do I need billet 4-bolt caps" for my buildup.
Even though my financial istuation is a bit better than when I was making minimum wage, I still have that past and that is probably one reason I tend to be "conservative", trying for example to steer peiople away from 8,000rpm street motors. Racing tech has come to the street because people spend a lot more on their cars. But you still need to keep in mind that even with advances in materials, manufacturing, and design TINSTAAFL.
Be careful whose advice you accept, reject, argue with until you fully understand where they are coming from. Listen to people's experiences, not just what someone who is lacking in same read on the 'net. Try to understand where they are coming from so that you can put the statements in context.
And I still don't get the idea of 18 degree heads on the street!*
*But for some, that might be perfect, which is exactly my point.
Rich
Last edited by rskrause; Apr 26, 2005 at 05:49 AM.
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Re: Good stuff on roller lifters....
Sorry you took that the wrong way vette.
And yes, I do know the caliber of military people out there.... I work with military personnel every day. I'd go on to say that most of them have excellent work ethics but then I'd be venturing too far from the topic...
As far as my personal contributions to this board.... well I don't know what to say there. I've made enemies and friends but I just hope that some useful information has come across in all of it. I hold no grudges and if others do than that's their own business.
More to the subject... one of the worst mistakes I've seen people make, is in giving advice without really looking to see what the advice-seeker is really after. Does he want to build the typical LT1 or is he after something a little extra? Are you just going to tell him, "Don't do that, it's dangerous" or are you going to tell him how to get it done the right way?
Yeah, you have to gage the person asking the question and determine whether or not they have the experience/money/*****<~(also important) to get it done. Can't just give blanket advice on everything.
And vette, where didn't I at least make an attempt to put things into perspective? If you'll go back to the valve spring thread, you are free to make a case against running what I've suggested with a cam of that kind of acceleration. But please try to do it with facts.
As for magazines.... have no aspirations for any of that or basking in the glory of my "accomplishments". Just happy to have made the right career choices that allow me to play with the things I really like to their fullest. I'll certainly make no apologies there.
-Mindgame
And yes, I do know the caliber of military people out there.... I work with military personnel every day. I'd go on to say that most of them have excellent work ethics but then I'd be venturing too far from the topic...
As far as my personal contributions to this board.... well I don't know what to say there. I've made enemies and friends but I just hope that some useful information has come across in all of it. I hold no grudges and if others do than that's their own business.
More to the subject... one of the worst mistakes I've seen people make, is in giving advice without really looking to see what the advice-seeker is really after. Does he want to build the typical LT1 or is he after something a little extra? Are you just going to tell him, "Don't do that, it's dangerous" or are you going to tell him how to get it done the right way?
Yeah, you have to gage the person asking the question and determine whether or not they have the experience/money/*****<~(also important) to get it done. Can't just give blanket advice on everything.
And vette, where didn't I at least make an attempt to put things into perspective? If you'll go back to the valve spring thread, you are free to make a case against running what I've suggested with a cam of that kind of acceleration. But please try to do it with facts.
As for magazines.... have no aspirations for any of that or basking in the glory of my "accomplishments". Just happy to have made the right career choices that allow me to play with the things I really like to their fullest. I'll certainly make no apologies there.
-Mindgame
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From: Hopkinsville KY
Re: Good stuff on roller lifters....
I was in the Army so I see it from both sides. I am a firm believer that anybody that stays in for longer than 10 yrs gets brainwashed. I made it to the point in my military career to be one of the ones giving the orders. While there needs to be people to stay in for a full career, most get out with the mentality that everybody they meet should bow to their accomplishments. You find out quick that people don't listen to what you have to say anymore because you are back to their level (the bottom). There are a lot of great leaders out there and there are the ones that want it their way or no way. You also have to think about it this way, when you are in combat, you have to be able to trust the person telling you what to do no questions asked. Without going into great detail, I was in several situations when I was in Iraq that my troops had to do what i told them without a debate. This could mean life or death. You just have to trust the experience of the man above you. I know I have gone way off the subject but this relates to the engine building world. There is always somebody out there that knows more than you. Sometimes you have to learn from and trust the experts.
