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105577 Posts in 12329 Topics by 4753 Members
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1  Camaro Research Group Discussion / General Discussion / Re: 69 rosewood Steering Wheel on: January 03, 2014, 10:41:14 AM
Looks right, but with modified mounting surfaces.  Huh
2  Camaro Research Group Discussion / Maintenance / Re: 69Z hard start, backfires on acceleration, stalls when breaking, related issues? on: November 24, 2013, 11:47:59 AM
You posted as I was typing. .060 is a large gap ,more than we run on the race car.

After a short drive, the backfiring seems to be resolved. This is after replacing the previous plugs with new autolites that were all gapped at 35. Crossing my fingers.

Thanks again to everybody who helped. CRG is definitely my favorite online resource.   Grin
3  Camaro Research Group Discussion / Maintenance / Re: 69Z hard start, backfires on acceleration, stalls when breaking, related issues? on: November 24, 2013, 09:26:05 AM
I replaced the plugs, and checked the gaps on the originals. The old plugs were not gapped to 35 as prescribed. Looks much larger (60?) However, my original points dizzy is out of the car waiting on a rebuild. I have a Pertronix Ignitor III
 distributor setup in it now, and a Pertronix flamethrower coil. This basically means much more spark, so I am not sure the larger gap made a difference.

After gapping and installing the new plugs, 2-pumps and she starts right up. It was 40 degrees out this morning, and no problem at all with starting. I'll take her for a short spin today before I proceed further. Then I hope to tackle the carb & vacuum leak checks.

How does one check/adjust the choke? I understand the need for the gap check on the choke plate when closed. It is about 9/32". Are there other adjustments to check? This is the original style choke, not electric.

Shane

4  Camaro Research Group Discussion / Maintenance / Re: Firestone vs. Goodyear Poly-glas tires on: November 23, 2013, 01:48:34 PM
Had the Sport Car 200s on mine, and wow, what a terrible ride. Pulled me all over the road. Ruts=bad news.

I know you are shooting for originality, but I put T/As on her, and it felt like I had replace the entire suspension. Night and day.

Shane
5  Camaro Research Group Discussion / Maintenance / Re: 69Z hard start, backfires on acceleration, stalls when breaking, related issues? on: November 23, 2013, 01:45:44 PM
Here are my plugs.

http://s829.photobucket.com/user/vetteran81/slideshow/1969%20Camaro%20Z28/Plugs

Obvious tuning issue. #5 worried me a little.
6  Camaro Research Group Discussion / Maintenance / Re: 69Z hard start, backfires on acceleration, stalls when breaking, related issues? on: November 22, 2013, 07:07:47 PM
Thanks for all the great advice! As for the choke, I am pretty much an idiot. I may have just been a little too aggressive when trying to start up on a cold morning and flooded it. The weather has only been cold a few mornings so far, and I think I just pumped it too hard. The weather has warmed back up and I have to wait until another cold morning comes around to verify things.

Now that the weekend is here I hope to have time to go through a basic tune up, and if I can find a decent  reference for this old 4053 I will try and ensure that it is set correctly.
7  Camaro Research Group Discussion / Maintenance / 69Z hard start, backfires on acceleration, stalls when breaking, related issues? on: November 20, 2013, 06:11:29 PM
After a recent rebuild, I find myself chasing down gremlins here and there. One thing is bothering me, and since I am not much of a mechanic at all, I am hoping someone can spot the problem.

1. The weather has gotten cool, and I have an issue with difficult starts. Once started, she idles well while I am waiting for it to warm up.
2. Once running, if I accelerate more than a tiny bit, I have backfiring and sputtering. If I accelerate very slowly, it's fine. This goes away if I drive it for a long while, and lessons as the day warms up, but never goes away completely.
3. One longer cruises, sometimes when I roll into a turn while breaking, it will stall. Sometimes it will stall when coming to a stop even on a straight away.

Frustrating!  Cry

'69 Z/28
DZ302, recent rebuild.
Holly Carb (4053)
New break booster/Master Cylinder
Orig. M21 tranny
Pretty much all stock otherwise

8  Camaro Research Group Discussion / Originality / Re: 69Z Brake Booster input shaft length??? on: November 08, 2013, 10:08:36 PM
Well, I went ahead and cut it down. Everything works well now. Still wondering about the different rod length.  Huh
9  Camaro Research Group Discussion / Originality / 69Z Brake Booster input shaft length??? on: November 08, 2013, 07:03:32 PM
I purchased a reproduction booster for my 69Z, and the input shaft (to the brake pedal) seems to be too long. I have yet to get it adjusted and not cause the brakes to drag. The rod makes contact with the pedal itself, preventing further shortening. I checked the rod length with my old booster, and the new one looks about 1" longer.

Any reasons why this would be so? There were different valve rod/input shaft lengths? Should I just cut the rod down? It's close.

Shane
10  Camaro Research Group Discussion / Originality / Re: 69Z Brake Booster Oddity on: November 04, 2013, 02:17:11 PM
Can you show a closeup of the front to see the triangles? That will be easy to see if it's a reproduction nor not.

Hey Mike, take a look at the 3rd photo in the original post. You may have to scroll to the right.

Shane
11  Camaro Research Group Discussion / Originality / Re: 69Z Brake Booster Oddity on: November 04, 2013, 12:03:53 PM
As I understand it, some boosters on '69 cars were made in late 68. In 1968, 251 would have been around September 8th. So before I write this booster off as a reproduction, I want to make sure. Since mine is an 04C car, is it unlikely that a September 68 booster would be original?
12  Camaro Research Group Discussion / Originality / Re: 69Z Brake Booster Oddity on: October 31, 2013, 08:37:54 AM
There was a detailed conversation about boosters recently here: http://www.camaros.org/forum/index.php?topic=10134.0

Thanks Mike. I had read through that one. While my question wasn't answered there, I probably should have just revived the thread anyway, instead of starting a new one. If a mod would like to merge it, no worries here.

13  Camaro Research Group Discussion / Originality / 69Z Brake Booster Oddity on: October 30, 2013, 05:53:09 PM
I removed my nasty old painted brake booster today, and was thinking of having it rebuilt. However, I am not sure it is correct. The top tab has the number 9204 on one side, and 251 on the other. This seems to conflict with information I found here. For one, my 69Z is an 04C car. So the julian looks way off, unless it is a 68 date. Also, the DELCO MORAINE stamp is at the about the 2 or 3 O'clock position and larger letters.

Any ideas on what is going on here? Wrong booster?

-Shane
14  Camaro Research Group Discussion / Mild Modifications / Re: Reproduction AM/FM quality? on: October 21, 2013, 07:42:34 PM
... and have to say that the pointer drive is anything but quiet stepper motor precision, sounds more like a sewing machine!


Jeeziminy!

Is that normal for these radios? Did you contact the seller?

I've been considering one of these for a long time, but the uber high pricing has kept me at bay. Seems that for that price, it would support bluetooth streaming or have a usb port hidden somewhere in the back or via a extender wire.

15  Camaro Research Group Discussion / Mild Modifications / Re: Cross Ram Z in action - sorta - check er out on: October 15, 2013, 12:19:06 PM
Sweet. That's not the $25k NOS crossram setup from HeartbleatCity was it? lol
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