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105673 Posts in 12339 Topics by 4754 Members
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31  Camaro Research Group Discussion / Maintenance / Re: Acid Rain Spots on: December 11, 2013, 06:57:18 AM
If metal oxides are involved - acid wash might help.  Try HCl or even HF on a very small area first.  Be very careful not to breath the fumes and, of course, protect skin.  Don't get acid on any metal parts.  We wet sanded right through the paint when trying to remove metal oxide spots (problem is that metal oxides are harder then the old paint).  Tried acid & it dissolved them.  Might not work on your problem, but worth a try - be careful though!
32  Camaro Research Group Discussion / Decoding/Numbers / Re: 69 Camaro 396 Exhaust manifolds on: November 12, 2013, 11:31:04 AM
May be interesting to note that BB exhaust manifolds were cast 4 to a mold (2 RH and 2 LH) on lines 5 and 6.  Big block cases were cast one in a mold on line 1.  There wasn't a lot of room for rough casting inventory at the motor plant, so casting over-runs had to be stored at the foundry.  Parts that wound up in foundry inventory were stored "first in - last out", so castings that went into inventory tended to stay there for quite a while.  Most of the inventory area at the foundry was located outside and was such a mess (particularly in the winter in western New York) that scheduling would often cast new parts rather then try to find the previously cast parts located in inventory.  Soooo - if you find a nice set of exhaust manifolds that are within 6 months before the engine build date - no one should cry foul!
33  Camaro Research Group Discussion / Restoration / Re: welding on cast iron on: November 04, 2013, 04:13:55 PM
" they're there to provide exit holes for the internal refractory sand cores after the cope and drag were split and dumped on the shake-out table" -

 the freeze plug holes certainly helped with sand and steel shot extraction, but the water jacket core extended out of those holes and printed into the drag mold to hold the jacket cores in proper orientation during molding & pouring.  The jacket cores were each held "up" by those "freeze plug" drag prints and "down" by 3 steel chaplets that pressed against the cope in the oil galley. Fore and aft jacket position was maintained by the water jackets printing into the housing cores.  That's why "freeze plugs" are also required at rear housing.  during solidification, water jacket cores became pretty unstable - so they had to be held in place securely.
34  Camaro Research Group Discussion / Restoration / Re: welding on cast iron on: November 03, 2013, 08:05:52 AM
ZLP955 - that's the way it was done at the Tonawanda foundry - not exhaust manifolds, but heads & blocks in non-stress areas.  Weld repairman would line up about 20 castings needing welding - heat the area to be welded - stick weld the repair area - immediately cover the repair with asbestos blanket - uncover it the next day - grind the repair flush.  Most commonly done on intake manifold rest area on blocks and on valve cover rail on heads.
35  Camaro Research Group Discussion / General Discussion / Re: Production Schedule around Holidays on: October 30, 2013, 06:12:59 AM
Unfortunately, it took witnessing some awful accidents to imprint the importance of safety indelibly in my mind.  Even after leaving GM - our plants in PA often worked 1,000,000 man hours without a lost time accident - and those are foundry man hours.
36  Camaro Research Group Discussion / General Discussion / Re: Production Schedule around Holidays on: October 27, 2013, 07:03:19 PM
I agree Kurt - the time between Christmas and New Years was always a big maintenance period.  However, if Christmas fell on a Monday, it would not have been unusual to run production lines on the Saturday prior to Christmas (at least at Tonawanda).  It just depended on demand.  I could get sufficient manpower to run lines on December 23rd - it wasn't like asking people to work Christmas Eve.  My comments were just to clarify that there was no contractual prohibition from working on holidays.
37  Camaro Research Group Discussion / General Discussion / Re: Production Schedule around Holidays on: October 27, 2013, 07:33:52 AM
Just for clarity - lots of employees worked on paid holidays including some production activities.  Contractually, assembly plants could have scheduled production activities on any of those days - wether or not anyone would show up for work might be another matter!  Working through holidays was very lucrative though - hioliday pay plus 1 1/2 to 2 times base rate.  I worked through those holidays - paid a lot of bills with the extra $$. 
38  Camaro Research Group Discussion / General Discussion / Re: Hershey Bound on: October 14, 2013, 06:56:49 PM
Thanks Kurt!  My car was in 36B.  Sorry, but I didn't take pictures.  My daughter and grand daughter were with me - it was a great day.
39  Camaro Research Group Discussion / General Discussion / Re: Hershey Bound on: October 14, 2013, 05:59:09 AM
OOPS!!!  sorry that they posted upside down - but you get the idea!
40  Camaro Research Group Discussion / General Discussion / Re: Hershey Bound on: October 14, 2013, 05:57:51 AM
Saturday was great!  Got first senior in class 36G.  Enjoyed visiting with several of you.  I wasn't at the show at all on Friday.  Had "flood watch" at my daughter & son-in-law's home in Lancaster!  They have a little farm with a stream running through it.  The second picture shows a footbridge over the stream - the water is normally 6 feet under the bottom of the bridge.

  

41  Camaro Research Group Discussion / General Discussion / Re: Hershey Bound on: October 08, 2013, 04:37:14 AM
I'll probably drive the '69 Pace car back & forth from Lancaster each day - park it in G55.  Gotta love AACA & Fall Hershey!
42  Camaro Research Group Discussion / General Discussion / Re: Hershey Bound on: October 05, 2013, 05:56:18 AM
I'll be there - G54-G56 in car corral.  Hope this weather holds!
43  Camaro Research Group Discussion / Originality / Re: Original 1969 standard grille on: September 24, 2013, 05:26:02 PM
There are two rows of ejector pins missing on the repro grilles.  I guess that I'm making it too complicated though.  Here are the same areas on repro versus original - differences are easy to spot:

44  Camaro Research Group Discussion / Research Topics & Reports / Re: 69 owners with "Pebble-grained" steering wheels (not shrouds) please check in on: September 24, 2013, 08:11:23 AM
05E, X-11, 649657, 723 interior with console, pebble grain.
45  Camaro Research Group Discussion / Originality / Re: Original 1969 standard grille on: September 23, 2013, 03:01:34 PM
I'm not sure about RS grilles.  Repro standard grilles do have ejector pins, but a lot fewer & different locations.  Repro pins are also well adjusted - really flush with the mold cavity - harder to spot. 
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