Harlandsharp roller rockers brocke at the bearing - LS1TECH



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Harlandsharp roller rockers brocke at the bearing

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Old 06-10-2012, 05:17 AM   #1
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Exclamation Harlandsharp roller rockers brocke at the bearing

Hi guys,

one of my 1.7 LS2 harlandsharp rockers brocke at the bearing and i can be happy that it didn`t broke complete.
I only mentioned because i found a needle from a needle bearing on my oil plug.
My mechanic made a mistake because he didn`t look when he installed the harder valves in my AFR 225 heads. The rocker arm hit the valve spring retainer for a while till the arms were cut a little bit at the side.
Also some cutters have little sratches but i controlled it and now the rolls hit exactely the valves. Maybe also this was from the first miles with the rockers before they were cut a the side. Now i run the engine about 5000 miles and saw that one roller rocker (next to last on the driver side) broke at the bearing.
How can this happen after this short live? Could this have been caused from cutting the rocker by the valve spring retainer?
It is very interesting, that this roller rocker is the only one that has no cut from the retainer (see the pict)!
Can i get roller rockers with a smaller front but massive ones for over 1000 rwhp?
Should i also use lash caps but i have only about 0,05906" clearance from the valve steam to the cutters!
Is it normal that the pushrods loose the color on some points (see pict)?
Here are all picts:
https://picasaweb.google.com/1175772...eat=directlink

Corvette C5; LS2 402 CI with Vortech V7
Where to order UPS express?
Thank you
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Old 06-10-2012, 08:32 AM   #2
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Some stock rockers with trunion upgrade would be plenty for you unless you are making big power. The stockers are pretty light also, and wont have the clearance issues.
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Old 06-10-2012, 10:17 AM   #3
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Link again:
https://picasaweb.google.com/1175772...eat=directlink

Now it works
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Old 06-10-2012, 10:21 AM   #4
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I have about 1000 rwhp, so i changed to others.
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Old 06-10-2012, 12:21 PM   #6
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That`s how all others look like:

https://picasaweb.google.com/lh/phot...eat=directlink
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Old 06-10-2012, 04:42 PM   #7
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That head where the rocker pedestal is looks all fucked up. Dont know if thats just the casting making it appear that way or not
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Old 06-10-2012, 05:33 PM   #8
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Obviously, you have the wrong valve keepers and probably retainer and springs. These keepers seem to be the type that are offset to allow the springs to sit higher thus gives you more clearance to prevent coil bind.
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240sx, bad, bearings, harland, keeper, ls2, orientation, rocker, rockers, roller, sharp, spring, valve

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