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105865 Posts in 12354 Topics by 4762 Members
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16  Camaro Research Group Discussion / General Discussion / Re: beware of the look alike 68-Z28 fan on: January 09, 2013, 05:54:34 AM
The evidence that it is a welded and re-drilled fan is that the bolt holes are not in the correct radial position.
What appears to be the remanents original 3" holes on the painted side are in the correct radial position.

So, it is a rare fan in that it is a 4 rivet, though the ad could mislead if not carefully read.
The seller does not claim it to be an original 3.25" 4 rivet fan.
The seller does not claim it to be an extremely rare fan, only extremely rare fan blades [4 rivet]
The seller does mention that it has been machined, though does not specifically mention that this is because it has been welded and re-drilled.

So, probably still worth a good dollar being a 4 rivet, but would have been better to not have welded and redrilled it and to simply mention this as a possible mod in the ad.
There's probably a number of 3" 4 rivet hunters who are currently howling at what has been done here!
17  Camaro Research Group Discussion / Mild Modifications / Re: Reproduction AM/FM quality? on: January 03, 2013, 07:44:58 AM
Just picked up one of these repro radios http://www.radiosforoldcars.com/newradio0F.htm and have to say that the pointer drive is anything but quiet stepper motor precision, sounds more like a sewing machine!
Have made a youtube vid of it http://www.youtube.com/watch?v=Da6oYGFUyzs

When slowly rotating the tuner knob for manual tuning, the pointer moves up and down as well as in and out, in a circular motion as it traverses the dial i.e. it corkscrews it's way along the dial, which strongly suggests to me that the stepper lead screw is running out of center, causing the sewing machine noise.
Let me know what you think.
18  Camaro Research Group Discussion / Restoration / Re: How to repair plastic/vinyl air dam on: January 15, 2012, 02:33:26 PM
Hi Steve, good to see you here!  Smiley
Yes, I can also vouch for the Plastex stuff - brilliant, especially the moulding bar!! Used it to re-create a bunch of mounting tabs on a VL Calais.
19  Camaro Research Group Discussion / Restoration / Re: Media blasting gears on: January 15, 2012, 11:02:16 AM
Hi Mark, sorry for my sloooww response [nearly 12 months!!  Shocked]
Not sure what my nephew came up with in the end, I think he found one locally [Australia] of the right ratio and reverse width [saginaw]
It's for a 1st gen GM-H Monaro [Aussie 'Camaro'  Smiley]
I've been reading up on soda blasting and it seems a safe way to go if you want to blast trans parts.
20  Camaro Research Group Discussion / General Discussion / GM differentials, C clips and clutch v. cone lsd's on: December 16, 2011, 10:26:17 AM
Hi all,
When did GM drop the usage of 'C' clips in Camaro's? I've read in another forum that they were still in use in '72 Chevelles.
Apparently, most Buick, Olds and Pontiac diffs were not C clip design.
Any breakdown of the usage of C clips across GM differentials and GM vehicles appreciated.

Also, any info on the usage of clutch [Eaton design?] versus cone lsd across the range also appreciated.
21  Camaro Research Group Discussion / Originality / BR v. B-R ignition coil changeover date on: December 13, 2011, 08:09:08 AM
Hi all, after much sifting through various forums including this one, it's not exactly clear as to when the change from BR to B-R embossing of the coil occurred.
What's the best timline estimate to date for this change?
Unfortunately, mine has somehow ended up with a 429 B-R fitted to it, when it should most certainly be a 293 and probably BR, not B-R

The best estimate I have so far from all I've read on this change, is sometime during the 68 model.
In another thread on this forum, Marty has said that he has seen 68's with BR and 69's with B-R, though another forum has quoted 68's with B-R
All help appreciated.
TIA
22  Camaro Research Group Discussion / Research Topics & Reports / Re: Original 67-69 Camaro driveshafts - information requested about your car on: September 19, 2011, 11:53:12 AM
Ok, got my drive shaft out and can report some preliminaries.
Yokes are in-line.
Centers are 49.95"
Bolted straps on diff yoke.
Engine, trans and build as per my sig.

Hi Bryon, sorry for my absence. More info to report.
Have found the orange paint stripe on mine @ 12" approx from the transmission yoke center and what appears to be the green stripe a bit further down - more cleaning needed for that one.


23  Camaro Research Group Discussion / Restoration / Re: Media blasting gears on: July 16, 2011, 10:30:51 AM
Hi Bob,

Yes, I left the media question open as possible downsides may vary with media.
My main concern was with the disruption to the surface treatment of the teeth leading to premature wear and hence whining, or to even cause the teeth to whine more than they would otherwise.

Also, the possible embedding of particles of media in the surface of the gear leading to premature wear of not just the teeth, but the whole gearbox.
Heavy mineral media like garnet is terribly abrasive, even in it's finest powder form.

Certainly you would want to stay clear of bearing surfaces were needle rollers run.

The reason for asking this is because my nephew is building up a box which needs a cluster gear and also had concerns about the ebay offerings.

btw, Rob - not Ron  Smiley
24  Camaro Research Group Discussion / Originality / Re: Universal joint retention - metal clips and plastic injection on: July 15, 2011, 11:59:37 AM
Yeah they're a pretty tuff shaft! I've asked my motor to exercise some authority at times   Cool
25  Camaro Research Group Discussion / Restoration / Media blasting gears on: July 15, 2011, 10:14:43 AM
I note some cluster gears on ebay that have been fully blasted, teeth and all.
I'm not sure that this is a wise thing to do, for a few reasons.
Your thoughts appreciated.
26  Camaro Research Group Discussion / Originality / Re: Universal joint retention - metal clips and plastic injection on: July 15, 2011, 03:00:26 AM
Thanks Charley for another data point and the great pics of the color bands!!  Smiley
I also note the green on the trans yoke of which there is a hint of that on mine too.
So far we have:

68 models
12C - pins
02E - pins

69 models
05C - clips
27  Camaro Research Group Discussion / Originality / Re: Universal joint retention - metal clips and plastic injection on: July 14, 2011, 04:39:21 AM
Going by the P&A, all 67 Turbo 400's came with the Saginaw drive shaft (nylon injection), and all 69 Turbo 400's came with the Dana drive shaft (clips). Only the 68 Turbo 400 had two versions. Go figure!

Ed

Ok, so this suggests a change in design/supplier during the 68 model rather than two different suppliers.
I take it that all non-T400 67 - 69 shafts were dana's?
If that's the case, then it would also suggest that inititally, only saginaw were tooled up to make the longer yokes for the T400 and sometime during the 68 model, dana tooled up to make the yokes as well?
28  Camaro Research Group Discussion / Originality / Re: Universal joint retention - metal clips and plastic injection on: July 13, 2011, 11:57:03 AM
Do you happen to know what 'Big Iron' Bob's build date is?

Ed

Funny you should mention that, I just pm'ed him to drop by with that info  Smiley
29  Camaro Research Group Discussion / Originality / Re: Universal joint retention - metal clips and plastic injection on: July 13, 2011, 11:39:57 AM
My build is 12C.
30  Camaro Research Group Discussion / Originality / Re: Universal joint retention - metal clips and plastic injection on: July 13, 2011, 11:13:51 AM
Cheers John, that's one book I don't have as yet. Does it describe a method of pressing the old joint apart?

Ed, I take it from what you say that sometime during the production of the 68 model, there was a switch from injected saginaws to clipped dana's?
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