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Harland Sharp rocker install ?

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Old Jan 27, 2012 | 11:19 PM
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Default Harland Sharp rocker install ?

Ok I changed my stock rockers out for some harland sharps because they say with AFRs the guides are bronze and will wear out with stockers

it seems to have more valve train noise is this just the way they are? I checked my preload and its about the same as the stock ones

thanks for any info! I did a search and found nothing on the characteristic of the rockers
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Old Jan 28, 2012 | 01:07 PM
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Yes, they will have more noise then the stock rockers, it's because they are aluminum and by it's nature aluminum has 0 sound dampening properties.
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Old Jan 28, 2012 | 05:17 PM
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Originally Posted by a/c man
Ok I changed my stock rockers out for some harland sharps because they say with AFRs the guides are bronze and will wear out with stockers

it seems to have more valve train noise is this just the way they are? I checked my preload and its about the same as the stock ones

thanks for any info! I did a search and found nothing on the characteristic of the rockers
Who is they and how does the HS rocker arm reduce side loading on the valve stems? The only valve train component you replaced was the rocker arms and you have increased valve train noise?
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Old Jan 28, 2012 | 05:23 PM
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Originally Posted by ipuig
Who is they and how does the HS rocker arm reduce side loading on the valve stems? The only valve train component you replaced was the rocker arms and you have increased valve train noise?
yes just rockers
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Old Jan 29, 2012 | 01:34 PM
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Originally Posted by ipuig
Who is they and how does the HS rocker arm reduce side loading on the valve stems? The only valve train component you replaced was the rocker arms and you have increased valve train noise?
"They" would be any head mfg. that uses bronze wall guides. The sliding effect of the stock rocker will side load the guides causing excessive wear.
AFAIK, All of them recommend using full roller rockers to eliminate the problem.
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Old Jan 30, 2012 | 05:30 AM
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Before installation, did you set the geometry (wipe) of the rockers or just bolt them in? If the geometry is off, the result could be more side loading which then defeats the intent of using them.
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