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107501 Posts in 12505 Topics by 4810 Members
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541  Camaro Research Group Discussion / Restoration / Re: Radiator tag restoration on: February 10, 2013, 06:58:07 PM
Steve - what did you use for the sacrificial rod?
I tried rebar but got inconsistent results reviving an oil pan but would like to try again since I have a ton of washing soda left over LOL

I used a flat (thick) uncoated steel washer, suspended about 2 inches from the tag. I also used steel wire rather than copper (to make sure no contamination to the tag from free copper dissolved from the anode). Since the iron oxide replacement is more or less line-of-sight, for a large item you can rig several electrodes around the part (rebar is good; steel and usually uncoated, easy to rig). Your imagination can have a lot of leeway - just make sure you suspend the parts in the solution, submerge and try not to let them touch the bottom or the sides of the container (should be plastic, or nonconductive). And always make sure the negative cable is connected to the part you want to derust, otherwise it will eat it alive like it does the sacrificial steel part.

If you bought a big box of Arm and Hammer like I did, you probably have enough to do a couple of subframes and an engine block or 2. Just be careful when you mix water and electricity - use common sense. BTW - raising the pH to the alkaline level is the main thing - the residue is no more harmful than leftover washing machine rinse water. Don't do this indoors, as the electrolysis produces both hydrogen gas and pure oxygen, which can be explosive if not ventilated well. Great thing - it's just plain cool to watch the rust disappear from the part (and watch the sacrificial part dissolve). See the next response to Mike's statement as well -
542  Camaro Research Group Discussion / General Discussion / Re: Old pictures of the 1969 Z/28 I owned in the late '70's on: February 09, 2013, 12:17:21 PM
1975 - car owned for two years at this point. It will get back to this one day, soon. This was my back-and-forth to school (187 miles one way to college) - 4:10's and 75 miles an hour, an exhaust pitch you never forget. I loved the Goodyears then, probably couldn't drive on them now (brought the Pacer home on bias ply Generals, all over the road for 113 miles, all over the interstate). Gotta love the X77's.
543  Camaro Research Group Discussion / Restoration / Re: What arer the correct colors for these? on: February 06, 2013, 10:44:05 PM
I matched the color/gloss from an NOS cowl cleaner that I own when doing an L48 auto (ThermAC) cowl cleaner a few months ago - the best match I found was Dupli-Color acrylic enamel DA1603 semi-gloss black - to me, a dead-on match when it dried (very glossy when wet). I compared the 2 side by side, and could not see a difference in gloss or texture. Watch the temperature when you spray, too cold and you'll orange peel a little (but then again, factory paint was light years from perfect !). 

Jerry has good suggestions in the '69 Definitive book's part finish section if you want a better guide. If you don't like spray bombing parts, a good auto paint mixer can get you there from Jerry's gloss percentages/recommendations. Just my opinions -

Regards,
Steve
544  Camaro Research Group Discussion / Originality / Re: 69 smallblock (302) Oil dip sticks on: February 06, 2013, 09:16:41 PM
Member            Production           Dipstick
                     Plant       Week        Type
69Z28-RS        NOR        09C            flat
JOHNZ            NOR        02D            flat
BULLITT65      NOR        08C            flat
RSZMJT          NOR        06A            flat
jdv69z            NOR        10(68)        flat
68CamaroZ28  NOR        11(68)        Green tip
X77-69Z28      NOR        05A            flat
z28z11           NOR         01C            flat
545  Camaro Research Group Discussion / General Discussion / Re: Possible fake 69z28 on e-bay on: February 01, 2013, 12:01:35 PM
Does it matter that the original post was made over 6 months ago?  I mean what is the point to revive it now?

Probably 'cause it's back on eBay as auction #281051607454. Must have been a prototype '69 produced in March '68 - that's the only explanation I could draw from an 03D month car with a 519374 VIN ending. Some people go beyond outrageous to gall and back when they advertise these cars. Gotta love pop rivets, especially big ones with paint. Really wish it had air and an automatic, so it would be more original.

Regards,
Steve
546  Camaro Research Group Discussion / Restoration / Radiator tag restoration on: January 27, 2013, 08:22:14 PM
After a couple of comments on the Originality section about recoring radiators, I decided to dig up the radiator tag for my Z11 L48 auto w/ A/C (UR code) and try to salvage it. Radiator tags are so extremely thin material, (you've probably noticed) that I was afarid to bead blast it without shredding it to pieces or blowing holes in it, plus removing too much material (see before pics). As I have not been able to find a repop UR tag yet, I tried something that really does work - electrolytic rust removal. A couple of hours in a plastic bucket hooked up to a battery charger can work miracles (as far as I'm concerned). Just thought I might share a few pics of before and after treatment - I have not bead blasted the tag, and may not, as a light coat of primer should finish this up before paint. Dirt cheap, and works surprisingly well, especially for tightwads like me with less-than-no-budget to work from. No holes, stamped number is plainly visible, traces of original paint remained in the crevices behind the rust.

Regards,
Steve
547  Camaro Research Group Discussion / Originality / Re: 1969 spare wheel on: January 26, 2013, 08:29:18 PM
Don't forget the other option - SS five spoke wheels, 14 X 7 AO code K-H's, available up until late '68 if I remember correctly, I've always called them SS-1's. Some people like 'em, some don't, but I'm happy to have all 5 of mine on the L78 X66 12A barn car.

Another senior moment - I scrambled over the pile in the garage looking for date codes on my N66 SS rally wheels, only to discover that they are not AO code '70 Chevelle wheels (I was apparently remembering the '70 LS5 I sold last year), but are YA code Camaro wheels like they are supposed to be. That's what I get for owning a Chevelle ( at least I sold it to afford my '68 Z). I have to assume they are not Kelseys ? No "K" code, all are marked M19, dates range from 4/23 - 5/28. Car is a 12A '68 X66. My bad - leaped before I looked.

Regards,
Steve 
548  Camaro Research Group Discussion / Originality / Re: 69 Z28 Radiator Re-coring ? on: January 25, 2013, 10:29:25 PM
Gary,

Wish mine was more of a survivor than it is.

The radiator shop in Nashville that did my friend's Z is Tanks and Tabs, 801 Fesslers Lane, Nashville, 800-874-2559. I went on the website for them, you can select the core # for the '69 Z, but it won't give you anything but the number. I'll check them out next week when I'm in town (realize it's too late to help with yours !), but with eventually 4 to do, I'd like to get a handle on a good source.

My '69 Z radiator has never been touched, tag is intact, '68 Z's radiator appears original, a little bumped and bruised, but original tag is there and intact, Z11's tag is being restored, X66's is missing. Have to go the repop route on it -

Regards,
Steve
549  Camaro Research Group Discussion / Originality / Re: 69 Z28 Radiator Re-coring ? on: January 25, 2013, 12:43:22 AM
Gary,

Will do. I'll try to get it tomorrow, BTW, look at the link Ed sent me for a good look at the tags and the tabs that hold them on - good pictures (great info !).

Regards,
Steve
550  Camaro Research Group Discussion / Originality / Re: 69 Z28 Radiator Re-coring ? on: January 25, 2013, 12:34:29 AM
Quote
Speaking of tags, do we have a listing anywhere in the site info of a breakdown of radiator tag info ?

HERE you go Steve.

Ed


Ed - just saved me a lot of heartburn. I have looked for this info for years, never realized it was right under my fingers. Another instance of why this site is soooo appreciated - and you guys that labor so diligently on it. Incidently, I bought the right GM UR tag (by accident) years ago - this just documented why I bought it !

Thanks and regards,
Steve
551  Camaro Research Group Discussion / Originality / Re: 69 Z28 Radiator Re-coring ? on: January 25, 2013, 12:20:44 AM
Gary,

Tags are easily removed, with a little care. They grip around the edge of the tank, and have a couple of "spurs" that lock them on. If you're careful, they'll usually come right off without damage. Be careful of weakened (rusted) metal - it's pretty thin steel.

I have not had any of my radiators rebuilt as yet, but a fellow Z owner near me had his rebuilt by a shop in Nashville. Swears it's dead nuts, and knowing this owner very well, I'd take his word for it. His Z has been in his family since the early 70's, and he is very particular about it. I suppose it's too late to get the source for you, but according to him, the 3 row core, exact duplicate, is available. I intend on getting mine done at the same source he used (whenI can afford it).

Regards,
Steve
552  Camaro Research Group Discussion / Originality / Re: 1969 spare wheel on: January 24, 2013, 06:21:18 PM
Don't forget the other option - SS five spoke wheels, 14 X 7 AO code K-H's, available up until late '68 if I remember correctly, I've always called them SS-1's. Some people like 'em, some don't, but I'm happy to have all 5 of mine on the L78 X66 12A barn car.

Regards,
Steve
553  Camaro Research Group Discussion / Originality / Re: 69 Z28 Radiator Re-coring ? on: January 24, 2013, 06:06:04 PM
Speaking of tags, do we have a listing anywhere in the site info of a breakdown of radiator tag info ? Specifically Z11 L48 auto A/C cars - both of my Z's have their original tags, but the Z11 is missing in action (probably from the apparent rework before I bought the car, hence my reference above to "remove it before you send it" post).

Regards,
Steve
554  Camaro Research Group Discussion / Originality / Re: 69 Z28 Radiator Re-coring ? on: January 24, 2013, 05:38:28 PM
Make sure they Save the TAG!

Better yet, remove the tag before you send it out !
555  Camaro Research Group Discussion / Decoding/Numbers / Re: Cylinder head question on: January 19, 2013, 01:16:30 PM
Alan Colvin's Chevrolet by the Numbers supports it. I have seen both on L48 69's.

Regards,
Steve
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