Lrs lifters
#1
01-05-2018, 10:33 AM
Lrs lifters
has anyone found a solution for the insane lifter noise on the lrs? I replaced mine with the ones in the 117 kit from screamin eagle and within a few thousand miles they go back to being noisy at all times.
Im a mechanic so I understand hydraulic lifters bleed down and this is just the way it is, but they're so noisy that I'm starting to actually worry about them. I've never heard any twin can get this bad.
If if anyone has run aftermarket lifters and had good results long term, feel free to make suggestions.
Im a mechanic so I understand hydraulic lifters bleed down and this is just the way it is, but they're so noisy that I'm starting to actually worry about them. I've never heard any twin can get this bad.
If if anyone has run aftermarket lifters and had good results long term, feel free to make suggestions.
#2
01-05-2018, 11:07 AM
Outstanding HDF Member
I have no direct knowledge of the late-generation Twin Cams, but is it possible that it's a function of the OEM non-adjustable pushrods? I've always had a hard time believing that with all of the minuscule variances possible between cams, cam bearings, cam support plate, lifters, head gaskets, heads, rocker arms and valves, a fixed-length pushrod can always be exactly right. From your description, it kinda sounds like a touch more preload on the pushrods is needed. I wonder whether you could eliminate the issue with a set of adjustable pushrods, rather than different lifters?
#4
01-05-2018, 12:25 PM
I have no direct knowledge of the late-generation Twin Cams, but is it possible that it's a function of the OEM non-adjustable pushrods? I've always had a hard time believing that with all of the minuscule variances possible between cams, cam bearings, cam support plate, lifters, head gaskets, heads, rocker arms and valves, a fixed-length pushrod can always be exactly right. From your description, it kinda sounds like a touch more preload on the pushrods is needed. I wonder whether you could eliminate the issue with a set of adjustable pushrods, rather than different lifters?
I agree 100% but they started off quiet then slowly progressed as they wore, now they're so loud and "clacky" that I'm not comfortable riding it. I don't want to go with adjustable pushrods if I don't have to. My in law had em and had one come loose when he was In sturgis...big pain in the ***.
#5
01-05-2018, 12:57 PM
Are you sure the noise is from the lifters & not the top end?
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For ROCKOUT information & purchasing please click HERE For all Twin Cams and Evo Big Twins & Sportsters
__________________
NO, they DON'T all do that!
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#6
01-05-2018, 05:03 PM
Are you sure the noise is from the lifters & not the top end?
Thousands and thousands of happy customers worldwide have found a solution
__________________________________________________ ____
For ROCKOUT information & purchasing please click HERE For all Twin Cams and Evo Big Twins & Sportsters
Thousands and thousands of happy customers worldwide have found a solution
__________________________________________________ ____
For ROCKOUT information & purchasing please click HERE For all Twin Cams and Evo Big Twins & Sportsters
Honestly, no. I can be sure the lifters ARE noisy, but haven't checked to see if the problem has traveled up stream yet. I'll get a stethoscope on it next chance I get but I still need to get a line on which lifters/pushrods people have had better results with since I know those have to be replaced.
#7
01-05-2018, 07:56 PM
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American Iron Magazine recently did an article on AXTELL oil pressure relief valves for the TC 88's. They noticed a remarkable difference in maintaining oil pressure. Might want to google AXTELL to look at these things. The cam plate has to come out for this flawed design from HD. Good luck.
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#8
01-06-2018, 10:44 PM
Are you sure the noise is from the lifters & not the top end?
Thousands and thousands of happy customers worldwide have found a solution
__________________________________________________ ____
For ROCKOUT information & purchasing please click HERE For all Twin Cams and Evo Big Twins & Sportsters
Thousands and thousands of happy customers worldwide have found a solution
__________________________________________________ ____
For ROCKOUT information & purchasing please click HERE For all Twin Cams and Evo Big Twins & Sportsters
I've put your rockouts in and it's still the lifters.
What you product did do however is stop the 2-3k rpm clatter of the rocker arms.
My issue, and what others have had is actual lifter failure from a combo of crap lifters, "perfect fit" pushrods and excessive valve spring pressure.
I've killed 2 sets of lifters in 7,000km's. (that's sub 5k miles)
Not acceptable in anyones language.
As it's still in warranty I'll keep sending it back to the dealer to fix but the day it comes out of that warranty in go the S&S premiums and adjustable rods.
The following users liked this post:
ROCKOUT Rocker Products (01-06-2018)
#10
01-07-2018, 04:45 AM
I've put your rockouts in and it's still the lifters.
What you product did do however is stop the 2-3k rpm clatter of the rocker arms.
My issue, and what others have had is actual lifter failure from a combo of crap lifters, "perfect fit" pushrods and excessive valve spring pressure.
I've killed 2 sets of lifters in 7,000km's. (that's sub 5k miles)
Not acceptable in anyones language.
As it's still in warranty I'll keep sending it back to the dealer to fix but the day it comes out of that warranty in go the S&S premiums and adjustable rods.
What you product did do however is stop the 2-3k rpm clatter of the rocker arms.
My issue, and what others have had is actual lifter failure from a combo of crap lifters, "perfect fit" pushrods and excessive valve spring pressure.
I've killed 2 sets of lifters in 7,000km's. (that's sub 5k miles)
Not acceptable in anyones language.
As it's still in warranty I'll keep sending it back to the dealer to fix but the day it comes out of that warranty in go the S&S premiums and adjustable rods.