best endurance lifters
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best endurance lifters

  1. #1
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    Default best endurance lifters

    I tried searching for an old thread that this was talked about but I cant seem to find it


    who is making the best endurance solid roller lifters for stock configuration big block chevy
    I think they are called morels but like I said I couldn't find the tread

    thanks

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    gn7
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    Quote Originally Posted by gn7 View Post
    morel with the solid bushing
    For an endurance lifter I'd stick with a Morel Ultra Pro needle bearing. The busing lifter has less life-cycle expectancy than the needle bearing and was designed more for extreme spring loads and aggressive lobes that "long life". The needle bearing is far more tolerant to dirty oil, hot/cold, start/stop...typical marine use where lobes and spring pressures really aren't an issue.
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    gn7
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    I can see that. I have always thought the needle bearings were more tolerant of cold/dry starts and less perfect oil



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    Default Luck..

    I've had good luck/results using the Crower pressure oiled needle bearing rollers... Good results meaning no failures at 225# and 245# on the seats....Oh, AND an Engle rev kit......
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    Default crower

    I lost a two year old morel bearing type and a friend of mine just lost one on its third summer. Both were .780 lift and run on the lake and river like they were family boats. 3000 to 3500 for five to ten miles over and over. Do y'all think any lifers are designed to last doing this? I'm going to a hyd roller.
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    Quote Originally Posted by vmaxed View Post
    I lost a two year old morel bearing type and a friend of mine just lost one on its third summer. Both were .780 lift and run on the lake and river like they were family boats. 3000 to 3500 for five to ten miles over and over. Do y'all think any lifers are designed to last doing this? I'm going to a hyd roller.
    Which Morel lifter? The nice thing about a hyd. roller is that it has a built in shock absorber.
    To answer your question...yes, the Ultra Pro is designed to do that but everything has a limit. Morel also makes a standard cut-away body solid roller lifter that I would not recommend for that app. Cruising a boat at 3500rpm for expended periods can be one of the hardest things you can do to an engine, especially with that much lift. At that rpm it's probably making near peak tq which is when cyl pressures are highest and the engine is actually working the hardest. You can have destructive harmonics at 3000rpm, where the same engine could last for years at 6000rpm. Compound this with less than ideal valve train geometry and parts and you can see where this is leading.
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    gn7
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    One thing I will add to what Steel posted. If the engine has been run that long, with those lifts, it better have damn good springs in it. When the springs start to go away, the lifters will be right behind them. Nothing will kill a roller faster than weak springs. Less than really good springs don't hold up as long as people think on a roller. When the lift gets over .750, finding a good endurance spring gets a little narrow, which means you have to keep a sharp eye on the spring pressure, or you are going to start destroying things, and never consider the springs as the problem.



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    Quote Originally Posted by gn7 View Post
    One thing I will add to what Steel posted. If the engine has been run that long, with those lifts, it better have damn good springs in it. When the springs start to go away, the lifters will be right behind them. Nothing will kill a roller faster than weak springs. Less than really good springs don't hold up as long as people think on a roller. When the lift gets over .750, finding a good endurance spring gets a little narrow, which means you have to keep a sharp eye on the spring pressure, or you are going to start destroying things, and never consider the springs as the problem.
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    Had 9 full seasons on my Crower Severe Duty with Hippo Oiler before they showed signs of beginning to go away... 260 on the seat & 700 open @ .765 lift... miles and miles of driving up and down river, and plenty of 7600-7700 nitrous blasts at the river and a couple seasons racing... yeah, they're good stuff and can take a beating for a long time.
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    Quote Originally Posted by vmaxed View Post
    I lost a two year old morel bearing type and a friend of mine just lost one on its third summer. Both were .780 lift and run on the lake and river like they were family boats. 3000 to 3500 for five to ten miles over and over. Do y'all think any lifers are designed to last doing this? I'm going to a hyd roller.
    Morel has 4 series of of solid roller lifters. I would be interested in knowing what part number or a picture of what is in the engines.
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    Some may preach that the bushing lifter is the set it and forget it of solid roller lifters, this isn't the case. Morel developed a bushing lifter back in the 80's for INDY racing. These lifters do have more load capacity and will take more spring pressure, ton's more springs pressure. They should be used in applications with aggressive lobe profiles where high spring loads are needed. They are still a maintenance item and are very finiky to dirty oil. If used these lifters must have clean oil constantly. Needles in this case are more forgiving.
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    Quote Originally Posted by gn7 View Post
    One thing I will add to what Steel posted. If the engine has been run that long, with those lifts, it better have damn good springs in it. When the springs start to go away, the lifters will be right behind them. Nothing will kill a roller faster than weak springs. Less than really good springs don't hold up as long as people think on a roller. When the lift gets over .750, finding a good endurance spring gets a little narrow, which means you have to keep a sharp eye on the spring pressure, or you are going to start destroying things, and never consider the springs as the problem.
    So since the overhead cam motors have so much less spring pressure this would never be a problem then...................sorry I couldnt resist.....

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    Doesn't Morel make the Crowers?
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