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Author Topic: Power brake vac. hose/69Z  (Read 3381 times)
L78 steve
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« on: February 07, 2008, 09:55:34 AM »

Should the P/B vac. hose go through the spark plug wire tower or use the bracket that bolts to the rocker cover? The car is a 04C 69Z.Steve.
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69 Z/28 Dover White X33,ZL2,PS,M20,Std.int.04C
67 SS/RS Mt. Green 1W,2LGSR,3SL,4K,5BY,07C
JohnZ
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« Reply #1 on: February 07, 2008, 12:04:40 PM »

Should the P/B vac. hose go through the spark plug wire tower or use the bracket that bolts to the rocker cover? The car is a 04C 69Z.Steve.

It goes through the Z/28-only bracket, as shown in the assembly manual, Section J50, sheet A4, View "A"; see photo below.
« Last Edit: February 07, 2008, 12:07:45 PM by JohnZ » Logged

'69 Z/28
Fathom Green
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L78 steve
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« Reply #2 on: February 07, 2008, 12:56:35 PM »

Thank you,John.How correct is your picture?I noticed that the throttle return spring is hooked to the plug wire tower,My green spring is hooked to the coil bracket.The plug wire stand is to far away to hook to it.Which is correct?Steve.
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69 Z/28 Dover White X33,ZL2,PS,M20,Std.int.04C
67 SS/RS Mt. Green 1W,2LGSR,3SL,4K,5BY,07C
Gramps69Z
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69 X33 D80


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« Reply #3 on: February 07, 2008, 05:13:28 PM »

 There is a small ear with a hole for the return spring on the wire tower.
« Last Edit: February 07, 2008, 05:26:47 PM by WYKOFF69Z » Logged

Captain John Wykoff
Destin Fire     1  year  to go

I'm sick and tired of mismanagement and disappointment. 
I'm a COWBOYS fan.
L78 steve
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« Reply #4 on: February 07, 2008, 06:03:46 PM »

I see the tab on the wire tower.The green spring is to short to reach it.So I figure the spring has been shortened (But doesn't appear to be) or it doesn't go to the wire tower.The AIM isn't clear on the location.
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69 Z/28 Dover White X33,ZL2,PS,M20,Std.int.04C
67 SS/RS Mt. Green 1W,2LGSR,3SL,4K,5BY,07C
Gramps69Z
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« Reply #5 on: February 07, 2008, 06:40:41 PM »

On my Z, I cannot connect the spring to the coil bracket without it rubbing on the intake.  Look in the AIM, section Z28 A4.  The picture shows it clearly.  You might need to post a picture so we can see exactly what's you have.
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Captain John Wykoff
Destin Fire     1  year  to go

I'm sick and tired of mismanagement and disappointment. 
I'm a COWBOYS fan.
68Zproject
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« Reply #6 on: February 07, 2008, 08:22:53 PM »

John Z's Z (try to say that 3 times real fast) is all original, so it's correct.
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68Z28
L78 steve
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« Reply #7 on: February 08, 2008, 09:57:33 AM »

Thank you all for the replies , My spring must have been shortened .Steve.
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69 Z/28 Dover White X33,ZL2,PS,M20,Std.int.04C
67 SS/RS Mt. Green 1W,2LGSR,3SL,4K,5BY,07C
jdv69z
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69 RS Z/28 52E


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« Reply #8 on: February 08, 2008, 11:04:31 AM »

Is the bracket a Z/28 item only because of the Z aluminum intake manifold? Only reason I can think of to make it different from other small blocks with Power brakes.

Jimmy V.
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Jimmy V.
L78 steve
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« Reply #9 on: February 08, 2008, 12:20:51 PM »

I believe the Z/28 P/S hose bracket is there to keep the hose off the throttle linkage.Which brings up another question,What is the reason for the Z only drop throttle linkage?
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69 Z/28 Dover White X33,ZL2,PS,M20,Std.int.04C
67 SS/RS Mt. Green 1W,2LGSR,3SL,4K,5BY,07C
JohnZ
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« Reply #10 on: February 08, 2008, 02:18:16 PM »

I believe the Z/28 P/S hose bracket is there to keep the hose off the throttle linkage.Which brings up another question,What is the reason for the Z only drop throttle linkage?

The "drop" linkage with the 2-piece rod is also used on the L34/35 and L-78 (as well as the Z/28), most likely to clear the drop base of the air cleaner. The rear half of the rod (that attaches to the lever from the pedal pivot) is the same on all "drop" applications, but the forward rod that attaches to the carb lever is different (one for Z, one for L34/35, one for L-78).
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L78 steve
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« Reply #11 on: February 08, 2008, 02:57:37 PM »

The drop base theory makes the most sense but doesn't the L48 use the same base particularly with ZL2?
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69 Z/28 Dover White X33,ZL2,PS,M20,Std.int.04C
67 SS/RS Mt. Green 1W,2LGSR,3SL,4K,5BY,07C
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