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Comp Hyd Roller Fail #2791950
07/02/20 03:40 PM
07/02/20 03:40 PM
Joined: Jan 2003
Posts: 1,798
Mopar Country, Mi
ccdave Offline OP
The Ultimate
ccdave  Offline OP
The Ultimate

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Posts: 1,798
Mopar Country, Mi
No more Comp hydraulic roller lifter for any builds!!! These rollers had less than 3k on a very mild cam.
They cost more but I’m going with Johnson lifters moving forward!

1EE706F7-0F74-49BC-83F0-5C2F01663F9D.jpegA96660FA-9ECB-4D8B-A9C8-4A5B3FE73D75.jpeg
Re: Comp Hyd Roller Fail [Re: ccdave] #2791964
07/02/20 04:47 PM
07/02/20 04:47 PM
Joined: Jan 2003
Posts: 13,117
So. Burlington, Vt.
F
fast68plymouth Offline
I Live Here
fast68plymouth  Offline
I Live Here
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Joined: Jan 2003
Posts: 13,117
So. Burlington, Vt.
What were the lobe numbers on the cam?


68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
Re: Comp Hyd Roller Fail [Re: fast68plymouth] #2791979
07/02/20 06:00 PM
07/02/20 06:00 PM
Joined: Jan 2003
Posts: 1,798
Mopar Country, Mi
ccdave Offline OP
The Ultimate
ccdave  Offline OP
The Ultimate

Joined: Jan 2003
Posts: 1,798
Mopar Country, Mi
530 lift 230 @.050.

Very mild 440 with lightly ported EStreet heads with beehive springs.
We have had a bit of a bad luck streak with Comp products as of late. Same customer split a Comp rocker on a somewhat mild BBC build as well.

The Johnson lifters are build right here in Michigan and our superior to most others.

Re: Comp Hyd Roller Fail [Re: ccdave] #2792012
07/02/20 07:54 PM
07/02/20 07:54 PM
Joined: Nov 2009
Posts: 2,847
St. Paul , Mn.
tubtar Offline
master
tubtar  Offline
master

Joined: Nov 2009
Posts: 2,847
St. Paul , Mn.
That top roller doesn't look like it did too much rolling !
Ouch !!

Re: Comp Hyd Roller Fail [Re: tubtar] #2792014
07/02/20 07:58 PM
07/02/20 07:58 PM
Joined: Jun 2004
Posts: 600
B
birdtracker Offline
mopar
birdtracker  Offline
mopar
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Joined: Jun 2004
Posts: 600
Originally Posted by tubtar
That top roller doesn't look like it did too much rolling !
Ouch !!


By the looks of it, it never rolled. All 3,000 miles. Birdtracker

Re: Comp Hyd Roller Fail [Re: birdtracker] #2792096
07/02/20 10:47 PM
07/02/20 10:47 PM
Joined: Jan 2003
Posts: 1,798
Mopar Country, Mi
ccdave Offline OP
The Ultimate
ccdave  Offline OP
The Ultimate

Joined: Jan 2003
Posts: 1,798
Mopar Country, Mi
Originally Posted by birdtracker
Originally Posted by tubtar
That top roller doesn't look like it did too much rolling !
Ouch !!


By the looks of it, it never rolled. All 3,000 miles. Birdtracker



I built the engine 6 years ago. My customer said " it just started making a loud ticking noise " . That was last week. The engine ran great on the dyno and made just a tad over 500 horsepower. Bottom line, the tie bar rivets fatigued over time and BOOM!!! The tie bar currently resides on the bottom of the oil pan. The Johnson lifters do cost more however when this sh!t happens its worth paying more...

Re: Comp Hyd Roller Fail [Re: ccdave] #2792225
07/03/20 09:39 AM
07/03/20 09:39 AM
Joined: Oct 2007
Posts: 3,532
New York
polyspheric Offline
master
polyspheric  Offline
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Joined: Oct 2007
Posts: 3,532
New York
The tie bar slot length is always greater than the inter-tappet distance to allow for the tappets being on opposite ends of the lift scale.
Any chance the button was bottomed out in the slot?


Boffin Emeritus
Re: Comp Hyd Roller Fail [Re: polyspheric] #2792264
07/03/20 10:55 AM
07/03/20 10:55 AM
Joined: Jan 2003
Posts: 1,798
Mopar Country, Mi
ccdave Offline OP
The Ultimate
ccdave  Offline OP
The Ultimate

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Posts: 1,798
Mopar Country, Mi
No

Re: Comp Hyd Roller Fail [Re: ccdave] #2792311
07/03/20 12:22 PM
07/03/20 12:22 PM
Joined: Jan 2003
Posts: 13,117
So. Burlington, Vt.
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fast68plymouth Offline
I Live Here
fast68plymouth  Offline
I Live Here
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Joined: Jan 2003
Posts: 13,117
So. Burlington, Vt.


68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
Re: Comp Hyd Roller Fail [Re: ccdave] #2792852
07/05/20 07:48 AM
07/05/20 07:48 AM
Joined: Sep 2004
Posts: 2,071
oberlin, Ohio
Rapid340 Offline
top fuel
Rapid340  Offline
top fuel

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Posts: 2,071
oberlin, Ohio
You may want to double check and verify spring pressures are HIGH enough. If pressures are low that can do far more damage than running more than you need.


1971 Factory Appearing Duster 340 11.000 @ 122 mph
Re: Comp Hyd Roller Fail [Re: tubtar] #2792857
07/05/20 08:29 AM
07/05/20 08:29 AM
Joined: Jan 2004
Posts: 1,346
N.Y.
sixpacksteve Offline
pro stock
sixpacksteve  Offline
pro stock

Joined: Jan 2004
Posts: 1,346
N.Y.
my buddy just lost a 318, mild build with just hydraulic lifters, 30 miles after break in.
2 lifters went soft, wiped cam and then crank


Hell Hath No Fury Like Mine
Re: Comp Hyd Roller Fail [Re: Rapid340] #2802331
07/28/20 10:53 PM
07/28/20 10:53 PM
Joined: Jan 2003
Posts: 1,798
Mopar Country, Mi
ccdave Offline OP
The Ultimate
ccdave  Offline OP
The Ultimate

Joined: Jan 2003
Posts: 1,798
Mopar Country, Mi
Originally Posted by Rapid340
You may want to double check and verify spring pressures are HIGH enough. If pressures are low that can do far more damage than running more than you need.


Because when a customer hands you a check for 12K to build his engine you don't check spring pressure???? Thanks for the response but...... everything and then some was checked on this engine. Keep in mind this 440 had been running fine since 2014. A single tie bar out of 8 failed 3 months ago. We sent the bad roller pair to Comp, they said sorry and fixed the galled two lobes on the cam for free and assured us that they have corrected what may have been a quality issues with that production run on their roller lifters. All is good however, I now use Johnson lifters on all of my builds. They truly are the best hydraulic roller lifter money can buy. Check them out!!!

Re: Comp Hyd Roller Fail [Re: ccdave] #2802355
07/29/20 01:01 AM
07/29/20 01:01 AM
Joined: Jul 2015
Posts: 104
Southern Missouri
Wailin D Offline
member
Wailin D  Offline
member

Joined: Jul 2015
Posts: 104
Southern Missouri
These are the Johnson lifters not the Johnson Hylift, correct?

Re: Comp Hyd Roller Fail [Re: Wailin D] #2802438
07/29/20 10:50 AM
07/29/20 10:50 AM
Joined: Jan 2005
Posts: 2,713
Michigan
MarkZ Offline
Worthy
MarkZ  Offline
Worthy

Joined: Jan 2005
Posts: 2,713
Michigan
All these threads on Comp hyd roller failures has me a little unsettled. I just had a 512 built in 2017 using a Comp kit with a few thousand street miles on it.

Did you notice the lifters being quieter after swapping to the Johnson lifters?


1987 Fifth Avenue - 512/518/D60




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