Lpop gears and fluidamprs: answers

faster6.0 · Jan 7, 2012

Discuss.

Extended Power · Jan 8, 2012

They are way heavier then the stock dampner, but this is what was explained to me:

With a balanced rotating assembly, you still have the vibration of the crank trying to be push, and pulled in several directions at once when the engine is running...the dampnr will help dampen the vibration caused by combustion forces.

Made sense to me, because when you balance a rotating assembly...it is using JUST the weight of the rods, pistons, bearings, oil, etc...it does not account for the blunt force of an explosion on the end of the pistons.

We'll see.

faster6.0 · Jan 8, 2012

I agree with the theory and it being a valuable tool in general, it seems that some have claimed it to not be compatible with 6.0s and that it would cause Lpop gears to go out. Any validity to these claims? Maybe Craig and Shawn will chime in.

Redneck6.0L · Jan 8, 2012

Broke several gears, covers and then took it off and NEVER broke any after that. Tylers truck was the same, elite diesel experianced the same thing, same results no matter who you ask that is running over 500hp and upto 4000rpm(most race files from any tuner all run 4k) will never use again, there have been enough broken parts because of them

windrunner408 · Jan 8, 2012

Wow good to know. I would have bought one of these if I hadnt had to do other more important things first. Glad to hear I didnt waste my money and time with it. What about the ATI balancer?? Has anyone had any luck with those? I know they are sort of the same thing so I could understand if folks said screw it. Just curious I guess.

Extended Power · Jan 8, 2012

Maybe that is the missing piece of the puzzle...the lpop gears...they are not on the crank when it is balanced either...and having it swingin around at 35-4000 rpm prolly has alot to do with the gears exploding inside the housings.

Redneck6.0L · Jan 8, 2012

Never tryed the ati but I will, cause to run in the 9s you have to have a certified balancer

Craig@MFI · Jan 8, 2012

Had one on one truck never had a issue with it than had one on my buddy's and he blew 6 lpop before we took it off and has Been good since
I don't see anything wrong with the one from the factory unless needed for racing than ati would be choice

wetnsloppy4x · Jan 8, 2012

Fluidampers have been suspect in crank failures for the last couple decades. Having evidence on yet another application is not a shocker. Too many broken crank snouts out there in non-supercharged applications for there not to be fire behind the smoke.

lubeowner · Jan 8, 2012

Redneck6.0L said:
Never tryed the ati but I will, cause to run in the 9s you have to have a certified balancer

Did the ati ever get released? I had the prototype on my truck like 3 or 4 years ago. It lived threw several pulls and 4500 rpms several times.

strokin6L · Jan 8, 2012

Have one on my truck. It's been on for over 5 years with no issues. Some passes down the track and at least 8 sled pulls. Even some nice burn outs with zero issues. I've seen my tach hit nearly 4500rpms in this vid...she's still holdin.
http://www.youtube.com/watch?v=SI8zdko6C5Q

strokin6L · Jan 8, 2012

lubeowner said:
Did the ati ever get released? I had the prototype on my truck like 3 or 4 years ago. It lived threw several pulls and 4500 rpms several times.

I emailed them this past suimmer and was told that they do have one for the 6L.

MorganY · Jan 8, 2012

I was wondering about this too. I hear on PSN a bunch about LPOP causing the front covers to crack

IdahoF350 · Jan 8, 2012

After all the broken blocks and cranks we had from Fluidampers on 5.0Ls back in the '90s, I will NEVER run their junk on any engine I have anything to do with, especially an engine I own. I've even seen one rip the front main web out of a Bowtie block with a Crower rotating assembly. We did determine one major factor was temperature, and failures were more common with a cold damper. Told them that at PRI a few years back in front of a crowd, they denied their hunk of scrap has ever been responsible for a failure.

I've had good experience with ATI units, FWIW.

Extended Power · Jan 9, 2012

How many have had problems with them while running Elite's billet LPOP gear set?

Tadd??? Any input on this?

What about just lowering the operating rpm down to 3600-3800?
Without knowing where the most power and torque is made, (Dyno results for your engine) maybe reving past 4000 is unnecassary.

Redneck6.0L · Jan 9, 2012

If you've ever dyno'd your truck you'd know 6L with stock cams make peak hp at 4000rpm and torque holds steady from 3-4k.

And for the record I broke two gears while accelerating. And the rpms were only at 3k when they broke.

Ivan I nominate you to put a fluid dampner on and try it. You seem to like to rebuild stuff lots

strokin6L · Jan 9, 2012

cousin has an '03 6L and broke his LPOP gears a few years back which cracked the front cover. Oh and his truck had the stock damener on it. The truck is a 6speed and it broke at under 4000rpms....he said it happened around 3800rpms.

Extended Power · Jan 9, 2012

Redneck6.0L said:
If you've ever dyno'd your truck you'd know 6L with stock cams make peak hp at 4000rpm and torque holds steady from 3-4k.

And for the record I broke two gears while accelerating. And the rpms were only at 3k when they broke.

Ivan I nominate you to put a fluid dampner on and try it. You seem to like to rebuild stuff lots

I just so happen to have one sitting on the bench...this is why I am asking if Tadd had any input, as I'm sure he has ran his LPOP gears with a Fluidampr.

And just because I rebuild my chit alot, doesn't mean it's always broke. Just means I try alot of different combinations.

strokin6L · Jan 9, 2012

Ivan, i've already heard and seen pics of elite's broken LPOP gears from a hand full of guys running the stock damener...not the fluidampr.

Extended Power · Jan 9, 2012

strokin6L said:
Ivan, i've already heard and seen pics of elite's broken LPOP gears from a hand full of guys running the stock damener...not the fluidampr.

Wow, that's weird....

I have never had an issue with my LPOP gears...stock or other wise. In fact, when I switched to the bigger water pump front cover, my original front cover's LPOP housing was "Perfect". You could still see the milling swirl marks.....looked like a "Spyrogragh" design.

You would think that by now, someone would have solved this mystery...

Course...they just keep changing the engine design again, and again....