135 replies to this topic

[toryman76]

Ok guys i know I've asked a few questions about this setup before but I'm still struggling to understand how its going to work. i have the cable clutch mechanism in the car all ready to go. heres a few things i need clarifying:

1. Where does the cable pivot from? with the HZ style it has a bracket up under the dash behind the pedal in which the cable is located to.

2. Do i put the hole where the original Torana v8 cable would go?

3. What dimensions do i need to put the hook on top of the pedal? I have read some where on here that it needs to be 25mm above where it is on the HZ pedal to get the right travel.

If anyone has done this before or has any pictures it would be greatly appreciated. I'm sure this will help out others who wish to do the same too


Cheers

toryman76

[TerrA LX]

And if u dont lengthen the pedal will u be snapping cables?

[toryman76]

1. Use a 6 cylinder or STARFIRE 4cyl to aussie 4 speed clutch pedal with the "hook" on the top of the pedal.


2. Use a UC 6 cylinder clutch cable.

Thanks heaps for the info Craig. Just a few more things:

1. Does someone have a picture of one of these so i can replicate the 'hook'? i have a LX 6cyl 3 speed pedal and a LX 4cyl Opel pedal.

2. Can i use the HZ cable that came with my setup? or will it be too short/long?

[rodomo]

I have a UC 6cly pedal here somewhere if you want to copy it.
I just have to find it

[yel327]

HZ clutch pedal is no good to you either unless it's a late HZ V8 pedal ie with full cable clutch. In HX/HZ with the half rat-trap the extra leverage for the extra clutch travel was done in the rat-trap, not in the pedal. With late HZ and WB the V8 pedal has the hook further away from the centre (basically as described for the modified UC pedal), plus it pivots in a different hole than the 6cyl pedal that is closer to the floor. This is why you often see HQ-HZ's where people have put a 6cyl WB pedal into it, the pedal sits closer to the flat part of the floor as these models don't have the second pivot hole. If Holden had built a V8 UC they would have had to have done the same thing ie provide a lower pivot point and shorter pedal for the V8 (assuming it would have had a full cable clutch like the V and W series cars).

[toryman76]

i have the half rat trap pedal from a HJ (or HX not sure) and the full cable pedal from a late HZ here. by further away from the centre do you mean upwards or further towards the firewall?

[toryman76]

how do i know when i have fully disengaged the clutch itself?

Heres what I've been mucking around with today:






How'd i do? Clutch pedal is to the floor in the pictures, and at rest it sits flush with the brake pedal.

[yel327]

i have the half rat trap pedal from a HJ (or HX not sure) and the full cable pedal from a late HZ here. by further away from the centre do you mean upwards or further towards the firewall?

Half rat trap is HX and first half of HZ.

With the full cable HZ/WB the 6cyl pedal pivots in a hole above (vertically) the V8 pedal. The V8 pedal pivots in the same hole as only hole on previous models. As the 6cyl pedal pivot is up higher the bottom arm is longer and the hook arm is shorter (conversely the V8 bottom arm is shorter and the hook arm is longer). None of this really helps you with a Torana but it does demonstate what you need to achieve in the Torana. You can't move the pivot point, so you have to notch the metal above like you have done to clear the longer hook arm, and hence make the hole in the firewall higher than you would have to for a 6cyl (or what is in a UC).

[rodomo]

Sorry for the late pics, I see you have it just about worked out but these measurements might still help?

[toryman76]

thanks heaps for that. it will definately help. im still not convinced that what i have roughly knocked up is going to be adequate. should the clutch fork be able to go all the way to the bellhousing? also is the clutch plate and pressure plate different from the push type to the pull type?

thanks again,

toryman76

[rodomo]

The fork should not bottom out in the slot in the bellhousing before the clutch has released.
You might be able to adjust the pivot height inside the bell housing but I'm not 100% sure.
From memory, the only difference in red clutch kits is the thrust bearing which varies with the collar depth.

[rodomo]

Yes.
Standard UC pedal.

[rodomo]

You might be able to adjust the pivot height inside the bell housing but I'm not 100% sure.

The bell housing I have IS adjustable. V8 Commodore.

[toryman76]

pretty sure mines from a HZ and before i put it in i cant say i noticed any sort of adjustment inside of it, not that i was looking for something like that though. wasn't aware that some had adjustment inside.

with the clutch pedal to the floor as it is i can wiggle the clutch plate...

cheers

[toryman76]

heres the first one i made, looking pretty messy:


and heres the result. hopefully this won't need any more adjusting and i can fully weld it on. but i will hold off on that until i get a new clutch:



This has been done using the late HZ cable with the 'screw' done on the bellhousing. I hope this can be of use for others wishing to do something similar


Big thanks to everyone on here who has helped me out.


Cheers!

[rodomo]

By the photo's your probably 25mm further forward with the hook than you need to be.

Well done on your mod & glad you've posted some pics for others to see.

I agree, compared to the earlier UC pic, it looks too close to the firewall.

I also agree with the pics and having a go yourself

[yel327]

I agree with the above. You've copied off an early HZ pedal which is the type that is half rat-trap, and pedal is the same for 6cyl and V8. See if you can get a WB V8 full cable pedal and copy where the hook is on it. Or just get a UC one and move the pedal further out.