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3 restos WIP = psycho
Join Date: Feb 2005
Location: North of Exit 17
Posts: 7,665
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Early forged rockers - any pointers for evaluating condition?
At $40/ea to chrome the faces of a forged rocker arm, I'd like to know which of my rockers don't need to be sent out for rechroming.
Can anyone enlighten me as to what details might suggest a forged rocker needs this work vs. one that doesn't? Thanks!
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- 1965 911 - 1969 911S - 1980 911SC Targa - 1979 930 |
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08-19-2009, 06:59 AM
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Join Date: Feb 2004
Location: California
Posts: 926
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You will need a "Coating Thickness Gauge" to measure the chrome thickness. I think the magnetic type are the cheapest.
Most likely the re-chromed ones will end up with a thicker more consistent face vs. the used oem ones.
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John Dougherty Dougherty Racing Cams |
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08-19-2009, 07:31 AM
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3 restos WIP = psycho
Join Date: Feb 2005
Location: North of Exit 17
Posts: 7,665
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Whoooooooooo BOY! They are EXPENSIVE! Even the magnetic pen type is $200! Ouch.
That's almost half the price of recoating them all! Well, now to decide whether to use my forged set or my cast set. The forged ones have a slightly better rocker ratio, so am apt to go that way, but I'll puzzle this out today and have to make a decision.
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- 1965 911 - 1969 911S - 1980 911SC Targa - 1979 930 |
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08-19-2009, 07:48 AM
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I would call around locally. Sometimes crankshaft grinders will have this tool. Or maybe a chrome plater, or powder coating place?
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John Dougherty Dougherty Racing Cams |
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08-19-2009, 07:55 AM
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3 restos WIP = psycho
Join Date: Feb 2005
Location: North of Exit 17
Posts: 7,665
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Will do!
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- 1965 911 - 1969 911S - 1980 911SC Targa - 1979 930 |
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08-19-2009, 08:01 AM
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Moderator
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Quote:
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08-19-2009, 10:39 AM
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3 restos WIP = psycho
Join Date: Feb 2005
Location: North of Exit 17
Posts: 7,665
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Quote:
 Will probably just do that, then.
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- 1965 911 - 1969 911S - 1980 911SC Targa - 1979 930 |
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08-19-2009, 11:14 AM
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Join Date: Oct 2008
Location: Nash County, NC.
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The forged rocker, if you jump time wastes the engine because they dont break.
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08-19-2009, 12:29 PM
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Join Date: Feb 2008
Location: Phoenix Arizona
Posts: 166
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Kenik: The early forged rockers are much lighter than the cast ones. ( 109 grams versus 135 grams for the cast ones) They will not break with higher spring pressures associated with running over 8000. if you are interested in selling the set please PM me.
aws |
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08-19-2009, 12:30 PM
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