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107602 Posts in 12510 Topics by 4812 Members
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16  Camaro Research Group Discussion / Decoding/Numbers / Re: NOS rear quarter panel louver on: October 17, 2014, 02:38:35 PM
As long as they do not have any tinnerman nut witness marks, they are probably brand new.  The casting is pot metal and it can corrode over time where it is not plated.
17  Camaro Research Group Discussion / General Discussion / Re: 69 Z/28 X77 garage/barn find on: October 17, 2014, 02:35:41 PM
Liquid Laundry Soap straight from the bottle, let it soak in for a bit, then warm water and light scrub with plastic bristle brush.  Rinse well and air dry.  They will be clean and soft.

-Mark.
18  Camaro Research Group Discussion / Maintenance / Re: Hurst Shifter Adjusting Blocks/Rods on: September 30, 2014, 02:35:31 PM
Use an Oxy-Acetylene smoke wrench to the adjusting block.  Get it to dull red color then spray with PB Blaster.  Makes a lot of smoke and smell so do it outdoors.  That is how I get the threaded engine block plugs out.  It should work for the shift rods too.  WD-40 does not work as well for this in my experience.  The PB Blaster is best here.

-Mark.
19  Camaro Research Group Discussion / Originality / Re: Master cylinder cover on: September 28, 2014, 07:07:19 PM
My 10A of '68 1969 Z/28 master cylinder has a date code of 241.  I believe it is original to the car?

My original cover is the version 1 style (which I still have), but I currently have the version 2 style on the car - that I stole from my Jan of '69 Z/28.

Sounds like a similar data point. Date code is 2 days away from mine and we have the same production week.  

I have a good original steering box as well.  I bet those would be close too.

-Mark.
20  Camaro Research Group Discussion / Originality / Re: Master cylinder cover on: September 28, 2014, 09:48:27 AM
Date Code for above.  Should line up for a 10A of '68 for a '69 model year car.
21  Camaro Research Group Discussion / Originality / Re: Master cylinder cover on: September 24, 2014, 08:21:14 PM


I don't have many important pieces still left on my car that I could reasonably believe were original BUT I do believe that this master cylinder/cover/booster is original.  This is a valid datapoint for this '69 Z built first week of October '68.  So glad I have something to contribute.  Grin

-Mark.
22  Camaro Research Group Discussion / General Discussion / Re: Got Rust? on: September 22, 2014, 02:19:52 PM
This is the line that made me grin:

"It will require trailering home OR WE CAN MAKE IT SMALLER for shipping if desired"  :~D

With what?  a blow torch?!?!?!  -HA!

on second thought......From a business standpoint, Bob should really be giving that car away to the first trailer that shows up.  He can then sell back all the pieces he took off of it to the new owner.

-Mark.
23  Camaro Research Group Discussion / General Discussion / Re: 68 L-89 with Heavy Duty clutch on: September 10, 2014, 10:17:55 AM
Maybe it was originally from a Chevelle or Vette with the HD clutch?

-Mark.
24  Camaro Research Group Discussion / Maintenance / Re: Timing out of wack on: August 25, 2014, 05:24:04 PM
The keyway is located something like 9 degrees off the TDC mark on the balancer.  Balancer timing mark will line up with timing tab at #1 TDC AND at #6 TDC.

The crank can't be wrong.  if you are actually at #1 TDC FIRING position, the timimg mark will match up with the timing tab (at maybe 2:00).  Anything else (IE 7:00) is not possible. If the keyway is near 7:00..... the #1 piston is at the BOTTOM of the cylinder.

Distributor can't be installed right. You can't move the keyway that is cut on the crank, right?

Go back to post 2 - Pull the distributor out and put your finger over the spark plug hole while someone else bumps the engine.  When the air puffs out you line up the timing marks on the balancer and the timing tab then drop the distributor down in place with the rotor tip ending up roughly pointing at the battery. See the chilton manual for the cap wiring firing order and correct distributo tower to start the firing order.  Be sure to get that distributor all the way down where the oil pump shaft lines up and the distributor is all the way down on to the intake manifold. 

This has got to be the issue.

-Mark.
25  Camaro Research Group Discussion / Maintenance / Re: Timing out of wack on: August 25, 2014, 01:55:32 PM
It will not run 180 out.  The shear key might be missing but I suspect this is not the problem.

How did you verify the balancer?  How are you checking the timing?  Where does the rotor point when the engine is on #1 TDC Firing position?

Which tower are you using for #1 cylinder?  Firing order is probably fine if it ran well.

-Mark.
26  Camaro Research Group Discussion / Maintenance / Re: Timing out of wack on: August 25, 2014, 11:05:25 AM
My guess - Re-clock the distributor to where it should be and verify the wire positions on the cap.  Put your finger in the #1 spark plug hole and crank the engine to verify #1 TDC firing position - it will blow your finger out. This situation is probably not as messed up as you think it is. Some times people drop a distributor in after a cam swap in what they believe is the right #1 TDC Firing position but it is actually at #6 TDC.  Happens ALL the time.

-Mark.
27  Camaro Research Group Discussion / Restoration / Re: Motor mounts on: August 25, 2014, 10:58:23 AM
The locking mounts are fine but keep in mind that the different engines used different mounts and stands.  In case you didn't know - All small blocks do not use the same mounts.  I know that sounds crazy because it really is. Smiley

-Mark.

28  Camaro Research Group Discussion / General Discussion / Re: Harmonic Balancer for 302, need the circumference? on: August 19, 2014, 09:39:00 AM
Wrap a measuring tape around the balancer.  Divide by 4.  Much more accurate and practical.  String is great too.

Make marks for every 90 and another mark for 36 advanced for setting the timing while you are at it.

BTW - "360 = Circumference" so measure around the damper then divide measurement by 10 to get the measurement for 36 point from the TDC mark. Smiley

-Mark.
29  Camaro Research Group Discussion / Maintenance / Re: where can I buy a manuel steering gear box rebuild kit on: August 18, 2014, 11:28:40 AM
Anybody have suggestions on rebuilder for a Saginaw power steer gearbox

http://lee-powersteering.com/

Paul

Tom Lee did mine and it came out real nice. The overhaul kit is not enough parts by itself to finish the job in my experience.  You usually end up needing other parts and those have to be tracked down.  Then there is the lash setting procedure to do as well....  I decided to send it to Tom.  He advised me to make it higher effort than it was originally and I really wish I had taken him up on the offer.  The factory boost is too much.  Can't really change it easily after the fact.  Same ratio but better road feel.  I am picky about originallity but this is one place it makes sense to go away from the factory spec in my opinion.  His too. Smiley

He did stamp his number on the top cover so you might want to talk to him about that if you are particular.

-Mark.
30  Camaro Research Group Discussion / General Discussion / Re: 69 Z/28 X77 garage/barn find on: August 13, 2014, 10:30:32 AM
Coil Spring with the original "YF" tag barely hanging on.   Both Springs tags were unreadable from the years of weathering.   The Brake backing plates lost their stickers as well with both leaving prints of where they once were.  Sad   The Brake Distribution switch and it's bracket.

You might try carefully soaking that spring tag in water.  I found an original tag on mine that was impossible to read unless it is wet.  Then you can see the codes.  Just something to try.

-Mark.
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