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VL Power Steering Rack


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#1 hanra

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Posted 29 March 2021 - 11:12 AM

Got a mate who is building a twin turbo 427 XB Falcon Sedan and he has what he believed was a VL steering rack. However he has found that the pinion is only splined half way around the shaft??? 

 

He has to try and mate that rack to the standard colum shift XB Falcon colum. 

 

Is anyone familiar with this rack? Is it normal? From what I can tell its a VL Power Steering Rack????  

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#2 hanra

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Posted 29 March 2021 - 11:27 AM

I did find these images from the VL workshop manual .

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#3 hanra

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Posted 29 March 2021 - 11:54 AM

Found this image of a VN Rack. Very similar.....

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#4 UCgazman

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Posted 29 March 2021 - 12:43 PM

VN & VL racks are the same aside from length...


Edited by UCgazman, 29 March 2021 - 12:44 PM.


#5 hanra

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Posted 29 March 2021 - 12:47 PM

Ahhh righteo. Good to know. 



#6 UCgazman

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Posted 29 March 2021 - 12:49 PM

Actually I just remembered the mounting tabs are further apart on VN onwards too. Where it attaches to the column is definitely the same though.



#7 hanra

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Posted 29 March 2021 - 03:17 PM

If anyone had that clamp that goes onto the pinion that would be handy!! I might have to join a commodore forum...... gahhhhhh.... Ill end up pulling the LSD out and putting a single spinner in... 



#8 Dr Terry

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Posted 29 March 2021 - 05:30 PM

VN & VL racks are the same aside from length...

Not true.

 

They are essentially the same racks, with only one small difference. Same length, same mounts, same connections to pump. In fact the last 6 months of VL production used VN-style racks. VN front track is the same as VB-VL.

 

The only real difference is the location of the left/right pipes at the valve. They moved them to clear the right hand VN V6 exhaust pipe.

 

VP is the same rack again, with a different input shaft, which was square.

 

hanra, there should be enough VNs in wrecking yards for you to obtain a clamp.

 

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#9 UCgazman

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Posted 29 March 2021 - 06:50 PM

You're right Dr Terry -

I had to check some old pics as I was sure I was right, turns out it was a VK I was thinking of - I had to cut off and move the k-frame brackets further out to fit a VN rack in it, as the mounts were different.

 

I'm was sure the front track was wider too, maybe thinking of VR? or I'm getting old - VN is definitely wider in the rear...



#10 Dr Terry

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Posted 30 March 2021 - 07:04 AM

You're right Dr Terry -

I had to check some old pics as I was sure I was right, turns out it was a VK I was thinking of - I had to cut off and move the k-frame brackets further out to fit a VN rack in it, as the mounts were different.

 

I'm was sure the front track was wider too, maybe thinking of VR? or I'm getting old - VN is definitely wider in the rear...

Correct, the VB-VK was a TRW unit which had different mounts to the VL.

 

VL-VN-VP racks are the same length, but the VR-VS are longer due to the widened track on those models.

 

VN-VP have a wider rear track. Interestingly VR-VS have a wider rear track than VN-VP, but for sedan only. VR-VS wagons & utes still have the VN-VP rear track.

 

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#11 bat 53

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Posted 30 March 2021 - 11:25 AM

vl has plastic hose connecting front to back vn on have metal 

also vn-vs racks are same lenght steering arms are longer on vr vs also bigger dia 

vn-vs is double D connection

vl rack head is differant angle


Edited by bat 53, 30 March 2021 - 11:26 AM.


#12 bat 53

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Posted 30 March 2021 - 11:40 AM

sorry vp to vs are double D



#13 Dr Terry

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Posted 30 March 2021 - 03:19 PM

vl has plastic hose connecting front to back vn on have metal 

also vn-vs racks are same lenght steering arms are longer on vr vs also bigger dia 

vn-vs is double D connection

vl rack head is differant angle

 

The plastic cross-over tube became steel 6 months before the end of VL production.

 

The VR-VS main shaft is also slightly longer (2 or 3mm from memory). 

 

What do you mean by "double D" ?

 

The only "angle" that changed on the VL head was the position of the left/right tubes.

 

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#14 bat 53

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Posted 30 March 2021 - 07:47 PM

the square on the head is knowen as a a double D

the head angle is about 1-2 degree differant 

i found on my conversions that useing a vl rack gave me a bit more clerance for the exhaust 

about 1-2 mm



#15 claysummers

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Posted 30 March 2021 - 08:09 PM

Shaft profile has two opposing flats, like a D with two uprights.


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#16 Dr Terry

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Posted 31 March 2021 - 07:01 AM

I've never looked at the square shaft being a "double D", now I understand.

 

I disagree about any difference in the head angle, the pinion & main shaft are the same parts with the same part numbers, how can the angle change ?

 

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#17 yel327

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Posted 31 March 2021 - 07:14 AM

Different double D to what I pictured!

#18 claysummers

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Posted 31 March 2021 - 07:32 AM

Theory vs practice. Funny old world.

early Holden nut

#19 hanra

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Posted 22 April 2021 - 03:03 PM

Mate found something on r at to fit straight up. Problem solved hopefully.

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