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02-21-2019, 02:52 PM
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#1
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Name: TheHammer
Title: broke
Status: Not Here
Join Date: May 2012
Location: juneau wi
Member`s Gallery
Posts: 738
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4v Harland sharps rockers??
Looking for individuals who have experience with these on a Cr. A customer of mine has a want for a set. I’ve heard rumors of them failing. So any input would be great.
Thanks: Matt
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02-21-2019, 05:40 PM
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#2
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Name: Poulina
Title: Too Much Time
Status: Not Here
Join Date: Dec 2015
Location: Norcal
Member`s Gallery
Posts: 795
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manton
__________________
2008 QCLB 6.8 48re Suncoast PCS, DDP supermentals, forcedinductions 467/87, Hamilton 188/220, Carrillos, studded mains w/stock girdle
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02-21-2019, 06:19 PM
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#3
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Name: PRINCETON_JAKE
Title: Too Much Time
Status: Not Here
Join Date: Jan 2010
Location: Princeton Minnesota
Member`s Gallery
Posts: 1,125
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I know a guy that has(had) them with nothing but problems. I believe the needle bearings kept failing. Id stick with stock, im pretty sure most of the big cummins trucks at UCC ran stock rockers
__________________
silver 2006 ram 2500 4x4, crew cab short box, 48RE auto with "stuff" done, 5.9 with more "stuff" done
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02-21-2019, 08:25 PM
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#4
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Name: TheHammer
Title: broke
Status: Not Here
Join Date: May 2012
Location: juneau wi
Member`s Gallery
Posts: 738
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Quote:
Originally Posted by Poulina
manton
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I would love to sell and install him a set. But he won’t open up to that idea.
The one set of harlands* I’ve seen failed due to an oiling issue, whether it be a design flaw or the individuals oil choice or maintenance procedures.
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02-21-2019, 08:56 PM
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#5
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Name: locomotive
Title: Night Train
Status: Not Here
Join Date: Jul 2010
Location: hinckley il
Member`s Gallery
Posts: 9
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probably installer or operator error if you are having issues
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02-21-2019, 10:17 PM
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#6
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Name: TheHammer
Title: broke
Status: Not Here
Join Date: May 2012
Location: juneau wi
Member`s Gallery
Posts: 738
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Quote:
Originally Posted by locomotive
probably installer or operator error if you are having issues
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So you’ve had good luck with them? What application are/did you use them in?
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02-22-2019, 08:57 AM
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#7
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Name: takedown95
Title: Too Much Time
Status: Not Here
Join Date: Aug 2011
Member`s Gallery
Posts: 2,841
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Multiple failures on them. It's not an oiling problem or install problem. Stick with stock rockers. Several 1500+ hp, 5000rpm pull trucks run stock cummins rockers
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02-24-2019, 04:12 PM
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#8
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Name: Got Smoke?
Title: Too Much Time
Status: Not Here
Join Date: Oct 2006
Location: Gallatin,TN
Member`s Gallery
Posts: 4,728
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Quote:
Originally Posted by TheHammer
Looking for individuals who have experience with these on a Cr. A customer of mine has a want for a set. I’ve heard rumors of them failing. So any input would be great.
Thanks: Matt
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Send your customer this link....
Harland Sharp: High-Quality Roller Rocker Arms - Pure Diesel Power
__________________
Mark
2007 2500 Mega 68RFE FirePunk EFI/CSP5 & TCM tuning, Edge CTS II.
1997 2500 Jokerfab cyl head, PDR street cam, FDS benched pump, DFI 5x18's, HX35 63/67, FirePunk 47RE & anteater.
2003 Jetta TDI 5spd "DZL WGN" lot's of mods
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02-24-2019, 05:58 PM
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#9
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Name: TheHammer
Title: broke
Status: Not Here
Join Date: May 2012
Location: juneau wi
Member`s Gallery
Posts: 738
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He had been sent that minutes before I made this post. Was hoping Garrett was going to chime in with why he has that.
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02-24-2019, 07:03 PM
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#10
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Name: Mark Nixon
Title: No Savior among the flesh
Status: Not Here
Join Date: Feb 2009
Location: Brownville, Nebraska
Member`s Gallery
Posts: 8,676
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Personally, I've always marveled at the idea of why a 24 valve DOESN'T have more rocker failures than they do.
A roller tip probably isn't much, if any, better than the ball/socket tip design they already run, Lord knows they still wear the valve guides out with either design.
The saving grace is that the 24 valve uses so much less (stock) spring pressure on the valves than most engines out there, which probably keeps the rocker failures way down, but I still see a lot of galled fulcrum and shafts from stone stockers.
I throw a LOT of damaged (usually galled) stock rocker arms away.
Oh, for the record, I'd NEVER run a needled/caged bearing on the fulcrum of ANY rocker, it's just begging for trouble.
Bronze works just fine, IMO.
Mark.
__________________
If you or I did business like the PEOPLE in government do business, we'd be put in jail. Government is coercive.
Anarchy: The state of existence where there are no masters & no slaves. Therefore, Anarchy means the ABSENCE OF SLAVERY, or, in other words, FREEDOM.
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02-25-2019, 04:53 AM
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#11
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Name: matty169
Title: Too Much Time
Status: Not Here
Join Date: May 2009
Location: Green Bay, Wi
Member`s Gallery
Posts: 1,542
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Huh......
Quote:
Originally Posted by Mark Nixon
Oh, for the record, I'd NEVER run a needled/caged bearing on the fulcrum of ANY rocker, it's just begging for trouble.
Bronze works just fine, IMO.
Mark.
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You only work on tractors?
Granted, we dont use harland sharp, but we use tons on needle bearings on rockers for many years. Never had a single one fail. Nitro motor has about 800psi on the seat with a 1 inch lobe......no failures of needle fulcrum rockers.
__________________
2002 Dodge 2500 2WD Quad cab, Silver Bullet 64, Helix2 cam, springs, studs, water/meth, blah,blah,blah
TRANSMISSION BY FIREPUNK CONVERTER BY DPC
Edge drag comp
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02-25-2019, 09:17 AM
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#12
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Name: Mark Nixon
Title: No Savior among the flesh
Status: Not Here
Join Date: Feb 2009
Location: Brownville, Nebraska
Member`s Gallery
Posts: 8,676
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Yeah, I spoke out of turn, not considering ALL things that can run roller fulcrum rockers.
I would still avoid them where possible, though.
Mark.
__________________
If you or I did business like the PEOPLE in government do business, we'd be put in jail. Government is coercive.
Anarchy: The state of existence where there are no masters & no slaves. Therefore, Anarchy means the ABSENCE OF SLAVERY, or, in other words, FREEDOM.
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