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01-12-2010, 04:17 PM
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#26
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Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,938
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Quote:
Originally Posted by WildBillyT
Although he could have figured it out with a flashlight and not by pulling the rocker.
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I don't know about that Bill, they did not look like they had the tabs. I was looking at em pretty hard with a shop lite on em... was not 100% on it, so I pulled one off, easy enough for some peace of mind. 
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Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
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Last edited by LTb1ow; 01-12-2010 at 04:17 PM.
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01-12-2010, 04:28 PM
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#27
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Join Date: Dec 2004
Location: manchester, NJ
Posts: 1,775
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what do those tabs ride on to keep it centered though??
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97 Firebird Formula - 383LT1
15 Subaru WRX - 2.0L-turbo
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01-12-2010, 04:29 PM
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#28
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Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,938
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The valve stem....
Guess you didn't build your engine? 
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Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
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01-12-2010, 05:17 PM
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#29
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Sliderule / Moderator
Join Date: Oct 2004
Location: Catawissa PA
Posts: 2,294
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Quote:
Originally Posted by LTs1ow
The valve stem....
Guess you didn't build your engine? |
Well if you installed those rockers AND NOW question if they are SA or NSA, guess you SHOULDN'T build engines! LOL!
Transmaro93, SA rockers straddle the top of the valve stem to hold them in place so they don't twist off the side of the valve. Because of this design they are typically heavier then a NSA rocker, are more effected by valve train deflection and also based on the type of spring/retainer you can have interference problems. A NSA rocker arm is kept in place by using a guide plate. The plate holds the pushrod in place so it cannot move side~to~side which in turn keeps the rocker arm aligned. Because the guideplate is metal on metal (guideplate against pushrod), it requires a higher grade metal and stronger pushrod as a stock soft metal PR can wear or bend.
Or you really want to build your LT1 heads:
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93Z M6 Black: The 385 Lives! Supercharged, 3-core front mount intercooler, GTP heads, 3:73's, Street twin clutch, Jethot Longtubes, Mufflex 4" catback/spintech, S+W cage, Spohn Suspenion, Yada Yada Yada
1) Build it
2) Race it
3) Break it
4) Repeat!!!
Last edited by Pampered-Z; 01-12-2010 at 05:24 PM.
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01-12-2010, 05:36 PM
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#30
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Join Date: Dec 2004
Location: manchester, NJ
Posts: 1,775
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ohhh... i just tooka second look i didnt see the ears on the bottom of the arm itself there... thanks for the explanation... i knew how they worked but all the other SA rockers i have seen have had the guide built into the wheel part.... that pic looks pretty crazy though... must be bullet proof
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97 Firebird Formula - 383LT1
15 Subaru WRX - 2.0L-turbo
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01-12-2010, 05:47 PM
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#31
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Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,938
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Heh, I was told they were SA and I just threw em on. They worked, so I never questioned it. Ah well.
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Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
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01-12-2010, 07:45 PM
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#32
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,368
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 shaft mounts yes! fails yes yes!!
don't they make plastic guide plates as well?
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01-12-2010, 07:50 PM
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#33
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Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,938
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Quote:
Originally Posted by sweetbmxrider
shaft mounts yes! fails yes yes!!
don't they make plastic guide plates as well? |
Ugh, those are just plates to stiffen up your rocker studs.
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Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
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01-12-2010, 08:05 PM
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#34
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,368
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aw ghey
betta!
Last edited by sweetbmxrider; 01-12-2010 at 08:07 PM.
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01-13-2010, 05:23 PM
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#35
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Join Date: Jun 2007
Location: Arm pit of the world... NJ
Posts: 2,677
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Quote:
Originally Posted by LTs1ow
Ugh, those are just plates to stiffen up your rocker studs.
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It's called a rocker girdle.
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John
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01-13-2010, 07:31 PM
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#36
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Ayatollah of Rock N Rolla / Admin
Join Date: Mar 2006
Location: Parts Unknown
Posts: 12,573
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Quote:
Originally Posted by Featherburner
It's called a rocker girdle.
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Yeah, or a rocker stud girdle.
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