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52abel Offline
#1 Posted : Wednesday, 28 July 2010 2:20:34 AM(UTC)
52abel

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Hi
I need some advise in relation to HZ clutch pedal set up. I am converting my HZ and i am installing an M21 4 speed. I have a hz V8 clutch cable and the support bracket that sits in behind the firewall. The clutch set up is a full cable. My problem is that the pedal sits up so high its not funny. When i push gently on the pedal it moves back to a position near the brake pedal. What i need to know is:
1. Is there a right way to install the clutch cable support bracket as on side has a single bolt hole and the other side has two. I have installed the bracket with the single hole upper most and bolted to the brake pedal bolt
2. I have been told that there is an adjustabel can that can be fitted or was fited to some holden models to allow for pedal adjustment.
thanks
Mike81973 Offline
#2 Posted : Wednesday, 28 July 2010 3:24:36 AM(UTC)
Mike81973

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Hi,
there is a trap in that a pedal from the rat trap ( half cable half linkage ) does not suit the full cable set up, it does not have enough travel.

In regards to the pedal height, they usually have a height stop from memory.

Mike

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HK1837 Offline
#3 Posted : Wednesday, 28 July 2010 4:38:00 PM(UTC)
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Early HZ had a half cable half rat-trap and only had 1 x pivot point.

Late HZ had a full cable and 2 x pivot points, and different pedals for V8 and 6cyl.

It sounds like you have the right bracket (with 2 x pivot holes), but do you have the right car with 2 x pivot points to suit? V8 uses bottom pivot hole (same spot as HQ-early HZ). 6cyl uses top hole. You can't use a 6cyl late pedal with a V8 either. If you go over to oldholden.com, one of the members here has posted up pictures of all pedals.

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If we all had the same (good) taste, who would buy all the Fords?
hq ss Offline
#4 Posted : Wednesday, 28 July 2010 6:40:30 PM(UTC)
hq ss

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If it is me your talking about at oldholden HK1837 the pictures are here
http://gallery.oldholden.com/HQ_SS/Tech/Pedals/
and there are pictures here
http://gallery.oldholden.com/HQ_SS/Tech/Gearboxs/
of the rest of the clutch mechanisms.
Cheers Paul.
52abel Offline
#5 Posted : Thursday, 29 July 2010 4:37:33 AM(UTC)
52abel

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Hi
Just to give you some more information:

The model of the the HZ is HZ8W P 68
It is plated HZ 12-77 so i believe that this makes it a late model
and also has AHZ07142A

The car originally had a 253 with a trimatic box.
As I am putting in a 304 I have a V8 HZ clutch cable and I got my clutch and brake pedal from Holden Mania who advised my on the type of set up i needed

There is a hook on the top of the clutch pedal. My pedal is the smae as the one in the picture from old holden. I have looked at the drawings and they don't seem to help me...

I need to reduce the free travel of the clutch pedal whick will bring the height it down to the same height as the brake pedal...or have i missed something

cheers

andy
quote:
Originally posted by HK1837
Early HZ had a half cable half rat-trap and only had 1 x pivot point.

Late HZ had a full cable and 2 x pivot points, and different pedals for V8 and 6cyl.

It sounds like you have the right bracket (with 2 x pivot holes), but do you have the right car with 2 x pivot points to suit? V8 uses bottom pivot hole (same spot as HQ-early HZ). 6cyl uses top hole. You can't use a 6cyl late pedal with a V8 either. If you go over to oldholden.com, one of the members here has posted up pictures of all pedals.

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If we all had the same (good) taste, who would buy all the Fords?
mmazz30 Offline
#6 Posted : Thursday, 29 July 2010 7:08:24 AM(UTC)
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I remember on my HJ there was a round rubber stopper that the clutch pedal rests on.It was round with an offset hole with a bolt through it.
You undo the bolt and rotate the stopper to adjust pedal height at rest.
Mr.Jones Offline
#7 Posted : Thursday, 29 July 2010 8:00:25 AM(UTC)
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Here's a pic of the eccentric adjustment bolt,
12/77 is early for an HZ
edit pic won't work here's the link http://gallery.oldholden.../HQ+LS/DSCF0001.JPG.html
Leroy

"Planet earth is the asylum to which the rest of the universe sends it's lunatics"
Voltaire

Edited by user Thursday, 29 July 2010 8:03:12 AM(UTC)  | Reason: Not specified

"Planet earth is the asylum to which the rest of the universe sends it's lunatics"
Voltaire
HK1837 Offline
#8 Posted : Thursday, 29 July 2010 4:52:37 PM(UTC)
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Yes it was Paul's pictures at oldholden I was referring to, just couldn't remember who it was. As Leroy sayys, 11/77 is early HZ, so you have to use a late V8 HZ or any WB V8 clutch pedal for the full cable setup. It uses the bottom pivot hole on the bracket. The right hole should be in the HZ firewall for your cable. You might have to play with the clutch fork pivot ball height too to get it all to work. Make sure you have the right clutch bearing, talk to Greg at Classicozwreck about which is the right one.

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If we all had the same (good) taste, who would buy all the Fords?
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If we all had the same (good) taste, who would buy all the Fords?
HK1837 Offline
#9 Posted : Thursday, 29 July 2010 4:53:33 PM(UTC)
HK1837

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Yes it was Paul's pictures at oldholden I was referring to, just couldn't remember who it was. As Leroy says, 11/77 is early HZ, so you have to use a late V8 HZ or any WB V8 clutch pedal for the full cable setup. It uses the bottom pivot hole on the bracket. The right hole should be in the HZ firewall for your cable. You might have to play with the clutch fork pivot ball height too to get it all to work. Make sure you have the right clutch bearing, talk to Greg at Classicozwreck about which is the right one.

_______________________________________________________
If we all had the same (good) taste, who would buy all the Fords?
_______________________________________________________
If we all had the same (good) taste, who would buy all the Fords?
Pistonbroke Offline
#10 Posted : Monday, 2 August 2010 4:58:59 AM(UTC)
Pistonbroke

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Hi 52abel
I just replaced clutch in my HZ.
The clutch setup was a bit of a headfck but can tell you a bit.
Firstly it runs zero clearance between throw out bearing and pressure plate fingers.
You have to set the throw out bearing travel using the pivot ball.
The only way I could do it was to remove the bellhousing from the gearbox and then fit it to the engine.
With the Fork fitted and bearing and carrier in place adjust the travel to 48mm from aft of bellhousing to tip of fork. This is the total free travel of the fork, which will be taken up when you fit the clutch cable.
The return spring on the clutch pedal should pull the pedal to the floor when cable is disconnected.
Fit the cable into top of pedal and then other end into its place.
You adjust the outer cable nut at the gearbox end to adjust pedal height and total pedal travel.. Be careful if your pedal is too high, it may over cause damage to the pressure plate diaphragm when you depress the clutch.

Hope this helps
davequey74 Offline
#11 Posted : Monday, 2 August 2010 5:41:25 AM(UTC)
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quote:
Originally posted by Mr.Jones
Here's a pic of the eccentric adjustment bolt,
12/77 is early for an HZ
edit pic won't work here's the link http://gallery.oldholden.../HQ+LS/DSCF0001.JPG.html
Leroy

"Planet earth is the asylum to which the rest of the universe sends it's lunatics"
Voltaire


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