That would be my theory as well.
“Video” Another Possible Hydraulic Roller Lifter Failure?
- Thread starter 70ChargerRT
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70ChargerRT
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Either way everyone just thinks it was a parts failure?
King Kong
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Did the engine ever see near 6000rpm?
Morel/ trickflow are extremely specific about preload instructions which I mentioned, but no information surfaced. So was it a installation failure first? Don't know
PRHeads
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I had an opportunity a couple years ago to try the Comp Evolution lifters in a 505 stroker.
I’ve never been happy with the lack of rpm and noisy operation from the Morels, so these interested me.
I somewhat stacked the deck for success by using a cam with rpm friendly lobes, but still went with 1.6 rockers.
I regret not attempting a pull to 6500, but the combo peaked a few hundred lower than that, and it just didn’t get done.
But there was no evidence of any problems thru 6300, and they were much quieter than the Morels I’d heard.
I’ve never been happy with the lack of rpm and noisy operation from the Morels, so these interested me.
I somewhat stacked the deck for success by using a cam with rpm friendly lobes, but still went with 1.6 rockers.
I regret not attempting a pull to 6500, but the combo peaked a few hundred lower than that, and it just didn’t get done.
But there was no evidence of any problems thru 6300, and they were much quieter than the Morels I’d heard.
70ChargerRT
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Those over Johnsons?
70ChargerRT
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Maybe a few times with a miss gear.
PRHeads
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Since you’re coming off a failure, I’d aim for the “best” I could get.
The high output marine stuff done here get the Johnsons.
Those are way harder on parts than the typical street/strip combo.
Johnson’s and a smoother cam profile should be a reliable package.
PRHeads
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I watched the dyno video linked on the previous page.
I got a little chuckle out of him talking about having an engine on the dyno with Morel lifters have the plungers get stuck at the bottom……on the first pull.
When that happened to me, it changed my view on what I feel is usually going on when the power noses over at higher rpm with Hyd lifters.
I got a little chuckle out of him talking about having an engine on the dyno with Morel lifters have the plungers get stuck at the bottom……on the first pull.
When that happened to me, it changed my view on what I feel is usually going on when the power noses over at higher rpm with Hyd lifters.
70ChargerRT
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The way he made it sounds the Johnsons HR,s don’t do it any of that
PRHeads
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I can’t think of any local builds that would have tested the high rpm capabilities of the Johnsons.
The marine stuff is usually rpm limited to about 6k or less.
But they will often see that rpm for extended periods.
My feeling is, for most s/s type builds, if a retrofit hr combo will get you to an honest usable 6200, that’s plenty for most applications.
The marine stuff is usually rpm limited to about 6k or less.
But they will often see that rpm for extended periods.
My feeling is, for most s/s type builds, if a retrofit hr combo will get you to an honest usable 6200, that’s plenty for most applications.
70ChargerRT
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Im going to pull my motor maybe tomorrow or the next day. Evaluate everything and go from there. If I can save this engine and decide to go back through it id like to get ahold of you on setting me up with a cam.
70ChargerRT
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Something must have been flexing or happened when it broke. Definitely a raised place here.
That's strange, not where the end of the cam is
70ChargerRT
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It was nothing. Was left from the factory weld. I should’ve caught that when I painted it don’t remember, lol
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