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XD short travel lifter update

Old 11-19-2021, 02:25 PM
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Originally Posted by ThisIsLivin View Post
I saw a recent interview with Ed and he didn't recommend bushed lifters for street or marine. The bushings wear faster than needle bearings and require regular maintenance.
Originally Posted by ICDEDPPL View Post
Talked to Ron Eskendarien also said the same.
Good to know. Maybe that's why they never pushed bushings on me when I told them my application. They would mention the upgraded bushings and leave it at that when I told them 6000RPM marine engines.
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Old 11-19-2021, 04:41 PM
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Originally Posted by Rookie View Post
Good to know. Maybe that's why they never pushed bushings on me when I told them my application. They would mention the upgraded bushings and leave it at that when I told them 6000RPM marine engines.
Interesting, bushings are de rigueur in diesels and common rail pumps.
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Old 11-19-2021, 06:11 PM
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Don`t mind my face ... but the green is knock . Red rpm.
I can see exactly when it went south lol




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Old 11-22-2021, 09:09 AM
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That`s not the right Data log above... that`s just normal run (only pulls timing after 60% knock) and back to idle, at idle the knock sensor is hearing everything .

This is the actual data log from the meltdown:



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Old 11-22-2021, 08:44 PM
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thats like looking at an ekg at the morgue! so if your very smart computer detected detonation and retarded timing why the hole in the piston?
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Old 11-23-2021, 01:57 PM
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.....
Originally Posted by ICDEDPPL View Post
Talked to Ron Eskendarien also said the same.



I am using a knock sensor but since I`m not sure I have it set up quite correctly I only have it pull timing after 5500 rpm.
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Old 11-23-2021, 04:33 PM
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ICDEDPPL, So sorry to see your carnage here. That hurts to see.

Curious, what oil are you running in those monsters?

Not at all implying oil had anything to do with the failure, just curious.

I hope you have a trouble free 2022 season.
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Old 11-23-2021, 04:58 PM
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87Mirage: MR50 Driven oil.
Thank you thats what I`m hoping .
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Old 11-24-2021, 07:33 AM
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Originally Posted by boostbros View Post
thats like looking at an ekg at the morgue! so if your very smart computer detected detonation and retarded timing why the hole in the piston?
I donít think any timing was being pulled at 4,000-4,500. Not sure however.
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Old 12-06-2021, 08:48 AM
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I think a lot of the problems we are seeing in hydraulic lifters is due to valve train stability. I've seen a lot of dyno runs where you can see where the valve train becomes unstable and that is on a stationary engine. I believe that a lot of our problems are due to oil control and oil aeration. I have learned so much about how critical oil control is especially in the marine environment since I rebuilt my motor. If I have to pull the motor I will replace the pan with something way more expensive than what I have. I bounce around pretty good on Lake Huron and my oil is everywhere but the bottom of the pan. I use a Master Lube pre-oiler, that I also use as an accumulator when I'm in rough water. But I know that's not enough to maintain constant non-aerated oil to my lifters. Just my 2 cents.
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