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Messages - 70z28lt1

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1
Restoration / Re: Difficulty Disassembling Smog Pump
« on: November 05, 2018, 01:57:33 PM »
I have also found that mild heating helps the Evap-o-rust.  I have an old pressure cooker that I leave the vent open and turn on low.  Works good with the acetone-atf penetrating oil trick too, but I'm chicken and put the whole thing outside in case the internal thermostat goes bad and overheats and catches fire.

2
Restoration / Re: restoration of copo
« on: October 15, 2018, 03:18:56 PM »
Frank Arone
Arone's Auto Body

3
Decoding/Numbers / Re: Were mistamps quite common?
« on: October 02, 2018, 11:18:40 AM »
My understanding is the trans an engine were done at the same time using the same gang stamp.  Is this correct?  If so, I would think it very unlikely that someone would remove one of the characters and replace it with another, but I suppose not impossible.  Seems more likely a mis-match between the dash VIN and the engine-trans combo..

Never mind...Re read the OP and it is a mis-match between the dash VIN and trans VIN.  Original engine must be MIA.

4
Decoding/Numbers / Re: Caveat Emptor...another repro tag
« on: September 25, 2018, 04:12:40 PM »
Sounds like they may have got holding the bag on this one.  The estate executor may have been told it was completely original.
Still a nice looking car.

5
General Discussion / Re: The great 68 Camaro 10 bolt SS debate
« on: August 29, 2018, 06:37:10 PM »
Here's how you can convince him..get every line side worker. both living and dead, to swear an affidavit that they only installed 12 bolts in SS's and he would believe you.  Oh wait!  His 10 bolt SS's were probably assembled by the janitor during the lunch break.  Truth is, you can't convince these guys no matter what the evidence.

6
Decoding/Numbers / Re: Caveat Emptor...beware the carefully worded ad
« on: July 05, 2018, 03:39:33 PM »
The good thing is that anyone who even spends 30 seconds to Google the VIN will find this thread as second on the list.  As far as I'm concerned, anybody bidding on this car gets what they deserve.

7
Decoding/Numbers / Re: Distributor and Alternator Numbers
« on: July 02, 2018, 12:21:30 PM »
I'm no expert by any means, but the 6's look much different.  The "known correct" one that sides of the sixes are flat...no arc.  The one the OP was questioning the sides of the sixes have an arc.  This to me looks suspicious.  Slab side sixes are not usual for easily purchased stamps.

8
Originality / Re: Under-Dash Heater Box
« on: June 11, 2018, 05:47:15 PM »
See post #4
http://www.camaros.org/forum/index.php?topic=9798.0
Still available at some PPG jobbers

9
General Discussion / Re: Palmetto Entrprises
« on: June 06, 2018, 08:22:19 PM »
I know many industrial fasteners are black oxided, which is a multi-step process and as such more costly than manganese (dark) or zinc phosphating.  My understanding is that due to cost savings GM went with phosphating most fasteners-brackets.  There are some exceptions.

11
General Discussion / Re: Palmetto Entrprises
« on: May 22, 2018, 07:41:03 PM »
I think the flakes might be "SALTS" precipitation, Filter them out with a coffee filter- one possible "solution" (Pun intended!)
I need to purchase some Ph testing strips to keep tabs on my concentration levels and "sweeten" the solution periodically to maintain effectiveness.

JIM
Jackpot!  I think you are correct.

Good idea on the Ph.  I wonder what a good "range" would be?

12
General Discussion / Re: Palmetto Entrprises
« on: May 22, 2018, 04:40:45 PM »
I know he mentioned that using HARD water instead of distilled water can cause surface finish streaking, & maintaining your ph range is critical to the solutions effectiveness.

I've only been using distilled water.

13
General Discussion / Re: Tachometers
« on: May 22, 2018, 04:00:50 PM »
On a somewhat related topic, were there any internal changes to the 302 when they changed from the 6-8 to 6.5-8 tach?  I'm thinking screw in studs and guideplates?  Did the 302 ever have screw in studs and guideplates?  I seem to read differing statements on this.

14
General Discussion / Re: Palmetto Entrprises
« on: May 21, 2018, 02:17:59 PM »
My used solution get whites "flakes" that tend float around in it.  It still seems to work OK.  Any idea what these are? 

15
General Discussion / Re: Palmetto Entrprises
« on: May 21, 2018, 12:51:45 AM »
Hood hinges and latch catch are manganese phosphate. Bigger darker almost black crystals, must be oiled and is used for applications where parts rub one another.

The black Zinc on bolts is a passivation conversion from silver zinc using a chemical dip.
Same with Yellow, Clear, and Olive. ALL four are Passivation conversions of silver zinc which modify the surface of the ZINC coating into a harder surface more resistant to abrasion and corrosion.

FWIW I have been ZINC plating parts lately and as a sample I have had a fender shim laying in the driveway since January and it has yet to show a spec of rust yet.

First I've heard about the hinges and release mechanism being manganese phosphated.  When I stripped the paint from my originals, they were a lighter grey more like zinc phosphate.  When i zinc'd mine they came out a dead ringer for the original grey.

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